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ED/STV/2001/PI/10
Fabrication and Welding Engineering
National Technical Certificate (NTC) and Advanced National Technical Certificate (ANTC)
Curriculum and Course Specifications
NATIONAL BOARD FOR TECHNICAL EDUCATION
Federal Republic of Nigeria
UNESCO – Nigeria Project
2001
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Fabrication and Welding Engineering - National
Technical Certificate (NTC) and Advanced National
Technical Certificate (ANTC)
Curriculum and Module Specifications
OFFICE: PLOT B, BIDA ROAD, P.M.B. 2239, KADUNA
NATIONAL TECHNICAL CERTIFICATE AND ADVANCED NATIONAL TECHNICAL
CERTIFICATE PROGRAMMES
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Table of Contents
General Information .............................................................................................................3
Curriculum Table (NTC).......................................................................................................7
Curriculum Table (ANTC) ....................................................................................................8
National Technical Certificate ..............................................................................................9
General Metalwork I .........................................................................................................9
General Metalwork II ......................................................................................................27
Sheet metal Work...........................................................................................................33
Gas Welding and cutting ................................................................................................42
Metal Arc Welding ..........................................................................................................51
Structural Steel Work .....................................................................................................62
Advanced National Technical Certificate ...........................................................................72
Welding ..........................................................................................................................72
Structural Mechanics and Specification..........................................................................87
Structural Steel Work .....................................................................................................91
Sheet metal work ...........................................................................................................95
List of tools and equipment for welding and fabrication engineering................................100
Guideline for textbooks development...............................................................................103
Recommended books for fabrication and welding engineering craft practice ..................105
List of Participants ...........................................................................................................106
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General Information
AIM
To give training and impart the necessary skills leading to the production of craftsmen, technicians and other
skilled personnel who will be enterprising and self-reliant.
ENTRY QUALIFICATIONS
Craft Programme
Candidates must not be less than 14 years of age and should have successfully completed three years of
Junior Secondary education or its equivalent. Special consideration may be given to sponsored candidates
with lower academic qualifications who hold trade test certificates and are capable of benefiting from the
programme.
Advanced Craft Programme
Candidates should possess the National Technical Certificate or its equivalent and should have had a
minimum of two years post qualification cognate industrial experience.
The Curriculum
The Curriculum of each programme is broadly divided into three components:
a. General Education, which accounts for 30% of the total hours required for the programme.
b. Trade Theory, Trade Practice and Related Studies which account for 65% and
c. Supervised Industrial Training/Work Experience, which accounts for about 5% of the total
hours required for the programme. This component of the course which may be taken in
industry or in college production unit is compulsory for the full-time students.
Included in the curriculum is the teacher's activity and learning resources required for the guidance of the
teacher.
Unit Course/Modules
A Course/Module is defined as a body of knowledge and skills capable of being utilized on its own or as a
foundation or pre-requisite knowledge for more advanced work in the same or other fields of study. Each
trade when successfully completed can be used for employment purposes.
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Behavioural Objectives
These are educational objectives, which identify precisely the type of behaviour a student should exhibit at
the end of a course/module or programme. Two types of behavioural objectives have been used as the
curriculum. They are:
a. General Objectives
b. Specific learning outcomes
General objectives are concise but general statements of the behaviour of the students on completion of a
unit of week such as understanding the principles and application in:
a. Orthographic projection in engineering/technical drawing;
b. Loci in Mathematics
c. Basic concepts of politics and government in Political Science
d. Demand and supply in Economics
Specific learning outcomes are concise statements of the specific behaviour expressed in units of discrete
practical tasks and related knowledge the students should demonstrate as a result of the educational
process to ascertain that the general objectives of course/programme have been achieved. They are more
discrete and quantitative expressions of the scope of the tasks contained in a teaching unit.
General Education In Technical Colleges
The General Education component of the curriculum aims at providing the trainee with complete secondary
education in critical subjects like English Language, Economics, Physics, Chemistry, Biology,
Entrepreneurial Studies and Mathematics to enhance the understanding of machines, tools and materials of
their trades and their application and as a foundation for post-secondary technical education for the above
average trainee. Hence, it is hoped that trainees who successfully complete their trade and general
education may be able to compete with their secondary school counterparts for direct entry into the
polytechnics or colleges of education (technical) for ND or NCE courses respectively. The Social Studies
component is designed to broaden the trainee's social skills and his understanding or his environment.
For the purpose of certification, only the first three courses in mathematics will be required. The remaining
modules are optional and are designed for the above average students.
National Certification
The NTC and ANTC programmes are run by Technical Colleges accredited by NBTE.
NABTEB conducts the final National examination and awards certificates.
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Trainees who successfully complete all the courses/modules specified in the curriculum table and passed
the national examinations in the trade will be awarded one of the following certificates:
S/NO LEVEL CERTIFICATE
Technical Programme
1. Craft Level National Technical Certificate
2. Advanced Craft Level Advanced National Technical Certificate
Guidance Notes For Teachers Teaching The Curriculum
The number of hours stated in the curriculum table may be increased or decreased to suit individual
institutions' timetable provided the entire course content is properly covered and the goals and objectives of
each module are achieved at the end of the term.
The maximum duration of any module in the new scheme is 300 hours. This means that for a term of 15
weeks, the course should be offered for 20 hours a week. This can be scheduled in sessions of 4 hours in a
day leaving the remaining hours for general education. However, (properly organized and if there are
adequate resources), most of these courses can be offered in two sessions a day, one in the morning and
the other one in the afternoon. In so doing, some of these programmes may be completed in lesser number
of years than at present.
The sessions of 4 hours include the trade theory and practice. It is left to the teacher to decide when the
class should e held in the workshop or in a lecture room.
Integrated Approach In The Teacher Of Trade
Theory, Trade Science And Trade Calculation
The traditional approach of teaching trade science and trade calculation as separate and distinct subjects in
technical college programmes is not relevant to the new programme as it will amount to a duplication of the
teaching of mathematics and physical science subjects in the course. The basic concepts and principles in
mathematics and physical science are the same as in the trade calculation and trade science. In the new
scheme therefore, qualified persons in these fields will teach mathematics and physical science and the
instructors will apply the principles and concepts in solving trade science and calculation problems in the
trade theory classes. To this end, efforts have been made to ensure that mathematics and science modules
required to be able to solve technical problems were taken as pre-requisite to the trade module.
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Evaluation Of Programme/Module
For the programme to achieve its objectives, any course started at the beginning of a term must terminate at
the end of the term.
Instructors should therefore device methods of accurately assessing the trainees to enable them give the
student's final grades at the end of the term. A national examination will be taken by all students who have
successfully completed their modules. The final award will be based on the aggregate of the scores attained
in the course work and the national examination.
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Curriculum Table (NTC)
NTC FABRICATION AND WELDING ENIGINEERING CRAFT PRACTICE
YEAR 1 YEAR 2 YEAR 3
S/No Subject
Code
Module Term
1
Term
2
Term
3
Term
1
Term
2
Term
3
Term
1
Term
2
Term
3
Total
Hours
for
each
T P T P T P T P T P T P T P T P T P 216
1 CMA 12-
15
Mathematics 2 - 2 - 2 - 2 - 2 - 2 - 2 - 2 - 2 - 288
2 CEN 11-
17
English 2 - 2 - 2 - 3 - 3 - 3 - 3 - 3 - 3 - 288
3 CPH 10-
12
Physics 2 - 2 - 2 - 2 1 2 1 2 1 2 1 2 1 2 1 288
4 CCH 11-
12
Chemistry 2 - 2 - 2 - 2 1 2 1 2 1 2 1 2 1 2 1 288
5 CEC 11-
13
Economics 2 - 2 - 2 - 2 - 2 - 2 - 2 - - - - - 216
6 CBM 11 Entrepreneurship - - - - - - 2 - 2 - 2 - - - - - - - 72
7 CTD 11-
13
Drawing - 3 - 3 - 3 - 3 - 3 - 3 - 2 - 2 - 2 288
8 ICT 11-
15
Computer Studies - - - - - - 1 2 1 2 1 2 1 2 1 2 - - 180
9 CME 11 General Metal Work I 2 5 2 5 - - - - - - - - - - - - - - 168
10 CME 12 General Metal Work
II
- - - - 2 3 - - - - - - - - - - - - 60
11 CFW 11 Sheet Metal Work - - - - - - - - - - - - 3 6 3 6 - - 216
12 CFW 12 Gas Welding and
Cutting
- - - - - - - - - - - - 3 6 3 6 - - 216
13 CFW 13 Metal Arc Welding - - - - - - - - - - - - - - 3 6 3 6 216
14 CFW 14 Structural Steel Work - - - - - - - - - - - - - - 3 6 3 6 216
15 CFW 11 Sheet metal Work - - - - - - - - - - 2 6 2 5 - - - - 180
GRAND TOTAL 12 8 12 8 12 6 14 7 14 7 14 7 18 18 22 30 15 16 2928
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Curriculum Table (ANTC)
ANTC FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE
YEAR 1
S/No Subject Code Module Term 1 Term 2 Term 3 Total Hours for each
T P T P T P
1. CMA 21-22 Mathematics 2 - 2 - 2 - 72
2 CEN 21-22 English and Communication 2 - 2 - 2 - 72
3 CTD 21 Engineering Drawing and Design - 3 - 3 - - 72
4 CTD 22 Fabrication Drawing - - - 3 - 3 72
5 CEC 21-23 Economics 2 - 2 - 2 - 72
6 CBM 21 Entrepreneurship 2 - 2 - 2 - 72
7 ICT 21-22 Computer Studies 1 2 2 2 - - 72
8 CFW 21 Welding 2 5 2 6 - - 180
9 CFW 22 Structural Mechanics & Specification - - 2 5 2 6 180
10 CFW 23 Structural Steel work 2 5 2 6 - - 180
11 CFW 24 Sheet metal work - - 2 5 2 6 180
TOTAL 13 15 17 30 12 15 1044
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National Technical Certificate
General Metalwork I
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN ENGINEERING CRAFT PRACTICE
Course: General metal Work I Course Code: CME 11 Contact Hours 7hrs/wk
Module Specification: PRACTICAL/KNOWLEDGE REQUIREMENTS
General Objective: On completion of this module the student will be able to:
Understand workshop safety rules and their application in machine shop.
1. Know the physical properties, manufacturing process and application of ferrous and non-
ferrous metals in common use
2. Select and use common measuring, marking out, cutting and striking tools.
3. Understand the basic working principles of drilling machine and be able to use it for
various types of screws treads rivets, and be able to rivet and cut screws by hand.
4. Understand the application of various types of screw threads and rivets, and be able to
rivet and cut screws by hand.
5. Understand the ISO system of tolerances and fits, and their application in engineering
production.
6. Produce simple engineering components on the bench.
7. Understand the essential features and working principles of the center lathe and carry out
basic operations such as turning, stepped turning facing, taper turning., knurling, chamfering
and undercutting.
Practical Competence: On completion of this module, the student will be able to:
1. Use all tools correctly ensuring the machinery guards and protective eye shields are used
at all times.
2. Comply with the general rules for safe practice in the work environment at all this.
3. Use and select handtools for carrying out various bench fitting and assembly tasks
4. Tools: hacksaws, taps, reamers, drills, dividers, surface gauge
5. Produce threads using taps and dies
6. Correctly grind drill point angles: Drills: Twist and flat drills
7. Select and set drilling machine speeds to carryout a range of operations using the
appropriate coolants. Drilling, reaming, counter sinking, counterboring
8. Perform metal joining by a range of processes. Cut through the joints and investigate the
depth of penetration of the metals at the interface. Processes: Soldering, brazing, and fusion
welding.
9. Mark out on metals and other materials, datum lines, angles, radii/circles and hole
positions using a range of tools.
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PRACTICAL TASKS
General Objective 1.0: On completion of the following practical task, the trainee will demonstrate the
following abilities:
Week Specific Learning Outcome Teachers Activities Resources
1-3
1.1 Using and handling hand tools,
portable power tools and machine
1.2 Lifting, moving and storing materials or
job
1.3 Demonstrate first aid application in
cases of minor cuts, electric shock, burns.
• Demonstrate safe ways of
handling basic hand tools
• Show a film on industrial
safety
• Demonstrate how to treat
energy cases like artificial
respiration cold compress,
etc
• Assess student
• Hand tools files, hacksaw
• Television, Video
machines
• Posters on artificial
respiration
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General Objective 2.0: Measuring, Marking, Cutting and Striking
Week Specific Learning Outcome Teachers Activities Resources
4-6
2.1 Describe the essential features
and use of the following
a. micrometer
b. vernier caliper
c. Venier height
gauge
d. combination set
2.2 Maintain and care for the
instruments listed above
2.3 Perform marking out exercise
on plane surfaces including profiles
2.4 File a piece of metal to given
specifications using any of the
following: Cross filing, draw filing,
filing square and flat surfaces
2.5 Test surface for flatness using
surface plate and try square and
state precautions to be taken to
avoid pinning
2.6 Maintain files in good working
conditions
2.7 Apply various hammers and
mallets e.g ball pein, rubber
mallets, etc for engineering
purposes
2.8 Select and insert hacksaw
blade correctly
2.9 Cut metal and other
engineering materials to given
specification using the adjustable
hacksaws, junior hacksaws,
piercing saw, etc drills and Drilling.
• Demonstrate how to use
micrometer, venier caliper,
vernier height gauge,
combination set
• Demonstrate the maintenance
and care of the instruments
listed above
• Perform marking out for the
students to learn and practice till
they become competent
• Demonstrate how flat surface
can be tested using surface plate
and try square
• Demonstrate how files are
cleaned and state the
precautions to be taken against
pinning. Students to practice till
competent
• Demonstrate the application of
hammers and mallets for
engineering purposes
• Demonstrate how a hacksaw
blade can be inserted correctly
• Demonstrate how to use
adjustable hacksaw, junior
hacksaw piercing
• Students should be allowed to
practice till competent
• Guide students to produce
simple engineering components
like open ended spanner,
engineers square, tool makers
clamp, center square, etc.
• Make a simple precision fitting
project like hexagonal mild steel
bar making push fit through a
mild steel plate
• Micrometer, vernier
calipers, vernier height
gauge, combination sets
• Steel rules, dividers,
punches, trammel, scribe
angle plate, vee block
center square
• Flat file, hand file, try
square
• File card, flat file
• Ball pein hammers, mallet
• Hacksaw blade, Hacksaw
frame.
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General Objective 3.0: Machine Tools
Week Specific Learning Outcome Teachers Activities Resources
7-9
3.1 Setting up and operate a drilling machine
in given situations
Note Setting up drilling machine should
include
a. change of spindle speed
b. adjustment of drilling table
to required height and angle,
holding of work on drilling
table to required height and
angle, holding of work on
drilling table using
appropriate clamping device
c. Install the drill bit in chuck
3.2 Sharpen a twist drill correctly to
manufactures' specification
3.3 Perform with facility the following
operations:
a. drilling blind holes
b. drilling round stock
c. counterboring and
counter-sinking
d. drilling large diameter
holes
3.4 List the operation sequence and cut
internal (through and blind) and external
threads by hand method and state
precautions to be taken when taping on the
bench
3.5 Rivet metals together in any given
situations
3.6 Mark out only given bench work using
datum points, datum lines, datum faces,
chalk or marking solution center or dot
punch, scribing block or measurement
transfer.
• Demonstrate how to set
up and operate a drilling
machine in given situation
• Students to practice till
competent
• Demonstrate how a twist
drill can be sharpened
correctly
• Demonstrate with the
appropriate facility how to
perform all the drilling
operations
• Students to practice till
they become competent
• Give notes as well as
demonstrate the operation
sequence in cutting
internal (through and
blind) and external
threads by hand method
• Demonstrate how
riveting can be done and
let the students practice
same till they become
competent
• Demonstrate the
marking out procedures
on bench working using
datum lines datum faces,
etc
• Students to practice till
they become competent
• Assess the student.
• Bench drill pillar drill, drill
bits
• Bench drill, pillar drill, twist
drill, flat drill, counter sink
drill, counterbore drill, center
drill
• Drills, taps, tap wrench, die
and die stock
• Rivets and sets of drill bits
• Surface table, surface
plate, marking solution,
center/dot punches, scribing
block
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General Objective 4.0: Lathe and Lathework
Week Specific Learning Outcome Teachers Activities Resources
10-12
4.1 Sharpen cutting tool for plain turning,
shouldering, parting off and facing
operations
4.2 Set up rough and turned stock in 3-
jaw-chuck
4.3 Select appropriate cutting tool and set
them up to center height for turning or
facing operations
4.4 Carryout chuck work involving facing,
step turning, undercutting radiusing,
chamfering, parting off and knuring
Note Components should be produced to
specified tolerance and finish
4.5 Produce simple components involving
taper turning using the compound slide
• Guide the students to
sharpen cutting tool for plain
turning shouldering, parting
off and facing operations
and allow students to
practice till competent
• Demonstrate how to set-up
rough and turned stock in a
3-jaw-chuck and operate
lathe. Allow students to
practice till competent
• Guide the students to
select appropriate cutting
tools and set them up to
center height for lathe work
(turning or facing)
• Students should be
allowed to practice till they
become competent
• Prepare simple exercises
that will guide students to
produce components
involving taper turning using
the compound slide. Assess
the students
• Point tools, grinding
machine, lathe machine
• 3-jaw chuck and lathe
machine
• Point tools and lathe
machine
• Lathe machine and
accessories
• Centre lathe and
accessories like catch plate,
face plate, dog lathe, lathe
centers fixed steady and
traveling steading
• Round nose turning tool,
fine finishing tool, form tool,
parting off tool, boring tool,
bar of good length and 4mm
diameter, Live/dead centers
catch plates
• Standard exercises or
prepared
Assessment profile: Practical to take 60% of the overall assessment
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PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT
PRACTICE
Course: General metal Work I Course Code: CME 11 Contact Hours 7hrs/wk
Course Specification: Knowledge Requirement
General Objective: 1.0 understand workshop safety rules and application in machine shop
Week Specific Learning Outcome Teachers Activities Resources
1
On completion of this module, the trainee
should be able to:
Workshop safety rules and
practice
1.1 State sources of hazards in the workshop
and how to prevent them.
e.g.
a. handling and using hand
tools, portable power tools and
machines;
b. stepping on or striking
obstructions left on floors or
benches;
c. lifting, moving and storing
materials or jobs;
d. using inflammable or
corrosive liquids and gases;
e. inhaling vapours or fumes;
1.2 Explain the application of factory safety
regulations in the machine shop.
1.3 Name safety equipment and wears
essential in the machine shop, and state their
application in working situations.
Note:
Example of safety wears and
equipment should include
overall, eye goggles, gloves,
safety boots, helmet, fire
extinguishers, etc
• State sources of hazards
in the workshop.
• Through questions and
answer, determine whether
the students grasped the
topic
• Show a film on industrial
safety.
• Through question and
answer determine
comprehension.
• Demonstrate how to treat
emergency cases
• like artifical respiration,
cold compress etc.
• List the safety equipment
and wears that are
essential in the workshop.
• Give detail notes and
explanation in each topic a-
e.
• Use questions and
answer to determine
comprehension.
• Assess the students
• Safety posters, common
hard tools like files
hacksaw
• Television, Video
machine.
• Overall, goggles, gloves,
saftyboots, head shield,
fire extinguishers.
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PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT
PRACTICE
Course: General metal Work I Course Code: CME 11 Contact Hours
7hrs/wk
Course Specification: Knowledge Requirement
General Objective: 1.0 understand workshop safety rules and application in machine shop
Week Specific Learning Outcome Teachers Activities Resources
1.4 Outline safety rules and
regulations relating to:-
a. clothing and health
hazards;
b. workshop hygiene;
c. movement and
other behaviour of
workers in the
workshops;
d. materials handling;
e. tool handling,
storage and usage;
f. machine operation;
g. fire protection.
1.5 Understand appropriate
procedures in the events of a
workshop accident
1.6 Examples of procedures may
include:
a. application of first
aid to the victim;
b. removal or
rectification of the
accident;
c. reporting the
accident to the
appropriate authority;
d. keeping a record of
accidents for
management use.
• Explain safety rules and regulation in the
workshop, highlighting a - g in 1.4.
• Explain appropriate procedures to be
taken in the event of workshop accident.
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PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT
PRACTICE
Course: General metal Work I Course Code: CME 11 Contact Hours
7hrs/wk
Course Specification: Knowledge Requirement
General Objective 2.0: Know the physical properties, manufacturing process and application of ferrous
and non-ferrous metals in common use
Week Specific Learning Outcome Teachers Activities Resources
2
2.1 Explain the meaning of the following
general physical properties of metals:
ductility, malleability, strength,
roughness, brittleness, elasticity,
plasticity.
• Give detail notes and explanations to
explain the meaning of the following
general physical properties of metals:
ductility, malleability, strength,
toughness, brittleness, elasticity,
plasticity. Assess the students
• Give detailed notes and explanations
for the topics in 2.1
2.3 Describe the basic composition and
properties of plain carbon steels, cast
iron and alloy steel and state their
application in the engineering industry.
Note: Specific examples of tools and
equipment made from the various steel
and cast iron should be mentioned.
Examples of steels and cast irons should
include: plain carbon steels, dead mild
steels, mild steel, medium carbon steel,
high carbon steel.
Cast Irons - gray cast
iron malleable cast iron,
iron carbide, alloy cast
irons (spheroidal and
acicular)
Alloy Steels - High
speed steels, high
tensile steels, tungsten,
stainless steels, stellite
2.4 Outline:
a. the copula process of
manufacture of cast iron;
• Give notes and specific examples of
tools and equipment made from the
various steels and cast iron.
• Examples of steels and cast irons
should include plain carbon steels,
dead mild steels, mild steel, medium
carbon steel high carbon steel, gray
cast iron, malleable cast iron, iron
carbide, alloy cast iron high speed
steels, high tensile steels, tungsten,
stainless steels.
• Give notes and explanation on the
cupola process, the blast furnace and
the direct reduction process of
manufacture of steel.
• This can be preceded by film show
and a visit to be manufacturing plant.
• Give detail notes and explanations
describing the physical properties and
applications of the following non-ferrous
metals: copper, tin, zinc, aluminium,
aluminium alloys, brass, (muntzmetal,
cartridge brass, gilding metal) etc.
• Video and
television including
cassettes on
production
processes.
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b. the blast furnace
process of manufacture
of pig iron;
c. the direct reduction
process of manufacture
of steel.
Note:
A visit to a steel
manufacturing plant is
recommended.
2.5 Describe the physical properties and
applications of non-ferrous metals below:
copper, tin, zinc,
aluminium and
aluminium alloys brass
(muntz metal, cartridge
brass, gilding etc)
metal,bronze
(manganese bronze
tunmetal, bell metal,
aluminium bronze,
phosphor bronze and
lead.
Benchwork and Tools:
bronze, manganese bronze bell metal,
aluminium bronze phosphor bronze and
lead. Assess the students
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PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT
PRACTICE
Course: General metal Work I Course Code: CME 11 Contact Hours
7hrs/wk
Course Specification: Knowledge Requirement
General Objective 3.0: Select and use common measuring, marking out, cutting and striking tools.
Week Specific Learning Outcome Teachers Activities Resources
3
3.1 Explain with examples the
difference between "line" and
"end" measurement.
3.2 Explain the use of datum
points, datum lines and datum
faces in marking out.
3.3 Describe, the functions and
application of the following
instruments used in metal-work,
steel rule, dividers, calipers
(inside, outside and odd-legs),
trammel, scriber angle plate,
vee-block, centre square.
3.4 Describe the various types
of files, stating their grades and
applications.
Note:
Types of files
should include:
flat, square,
round, half
round, three
square, warding
pollar, mill and
rasp.
3.5 Classify the common files
use in metal work and state their
composition of material used for
their manufacture.
3.6 Sketch the bench vise,
explain its clamping power and
demonstrate the technique of
• Prepare notes that will clearly differentiate
between "line" and "end" measurement.
• Prepare notes and examples that will explain
the use of datum points, datum lines, and
datum faces in marking out.
• Give explanations regarding the functions
and application of: steel rule, dividers, calipers
(inside, outside and oddleg) trammel, scriber,
angle plate, vee block, centre square
• Prepare notes that will describe the various
types of files, stating their grades and
applications. By type it means: flat, square
round, halfround, three square, warding, mill
and rasp.
• Prepare detail notes that will classify the
common files used in the metal work as well as
stafing the composition of materials used for
their manufacture.
• Show a bench vice and demonstrate the work
ithe vice for
• Show a bench vice and demonstrate the
technique of holding work in the vice for filing,
tapping and designing operations.
• Prepare detail notes that will describe the
functions of the various parts of a bench vice,
its holding power while performing various
operations.
• filing, tapping and designing operations
• Prepare detail notes that will describe the
functions of the various parts of a bench vice,
its holding power while performing various
operations
• Steel rule, dividers
calipers, trammel,
scribe angle plate
vee block, centre
square.
• Micrometer
vernier callipers
vernier height
gauge combination
set
• Flat file, hard file,
round file square,
half round,
triangular warding,
mill file, rasp file.
• Flat file, handfile
engineers square.
• Surface plate try
square (engineers
square)
• File card
• Flat file
• Bench vice.
• Bench vice.
• Ball pein hammers
mallets.
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holding work in the vise for
filing, tapping and designing
operations.
3.7 Describe the functions of the
various parts of a bench vice, its
holding power while performing
various operations on its, such
as filing, tapping sawing etc.
3.8 Describe and use the
following tools:
a. cold chisels
(flat, cross, cut
half round,
diamond-point)
b. centre punch
and dot punch
c. scrappers
(flat, triangular,
half round)
d. power hack
saw
• Assess the students
• Prepare detail notes and demonstrations that
will describe and uses of: cold chisels, centre
punch dot punch, scrapers and power
hacksaw.
20
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT
PRACTICE
Course: General metal Work I Course Code: CME 11 Contact Hours
7hrs/wk
Course Specification: Knowledge Requirement
General Objective 3.0: Select and use common measuring, marking out, cutting and striking tools.
Week Specific Learning Outcome Teachers Activities Resources
4
3.9 Describe the various parts of a hack saw
and their function.
3.10 Describe the common types of hacksaw
blades, their range of pitches and their
applications.
3.11 State the safety precautions to be
observed when using a hand hacksaw
• Prepare notes that will describe
the various parts of a hacksaw
and their functions.
• Show sample of hacksaw blades
as well as prepare notes that will
describe the common types of
hacksaw blades, their range of
pitches and their applications.
• Prepare notes that will show
correct way of inserting blades.
• Prepare detail notes and
explanation, stating the safety
precautions to be observed when
using a hand hacksaw.
• Prepare notes that will describe
the uses of various hacksaws.
• Assess the students
• Cold chisels,
centre punches, dot
punch, scrapers
power hacksaw
blades.
• Hacksaw blade
• Hacksaw frame
• Adjustable
hacksaw junior
hacksaw piercing
saw.
General Objective 4.0: Understand the working principles of a drilling machine, use it to drill and
ream holes on metals and other engineering materials
Week Specific Learning Outcome Teachers Activities Resources
5-6
4.1 Identify the various types of drilling
machines.
4.2 Describe, with sketches, the main
features of a bench or pillar drilling machine.
4.4 Describe with sketches and state where
each of the following types of drills are best
suited.
e.g. twist drill (taper shank, parallel shank
and jobbers drill, and their relative merits),
flat drill, countersink drill, counter bore drill,
combination centre drill.
4.5 Explain the effects of the following faults
Show different types of drilling
machines
Make notes and drawings that will
identify the various types of drilling
m/cs.
Prepare detail notes and drawings
that will describe the main
features of a bench or pillar drilling
machine.
Solve many problems for students
to practice.
Prepare notes and drawings that
• Bench drill
• Pillar drill.
• Twist drill, flat drill
counter sink drill,
counter bore drill
combination centre
drill.
Drilling machines
and its accessories.
21
in a ground twist drill bit:
a. point angle too acute;
b. point angle too obtuse;
c. cutting edges at unequal
angles;
d. insufficient lip clearance;
e. excessive lip clearance.
4.6 Calculate spindle revolution or cutting
speed for specified size of drill using the
formulae:-
N = 1000S/π
S = πdN/1000
Where S = cutting speed
(m/min)
N = revolution/minute
D = diameter of drill (mm)
π = 3.142
4.8 State the cause and remedy of drilling
faults such as:-
a. drill breaking;
b. drill coloured blue;
c. walls of drilled hole left
rough;
d. chipped cutting lips.
4.9 State the safety precautions to be
observed when using a drilling machine.
4.10 Explain the purpose of reaming and
describe different types of hand and machine
reamers.
4.11 Ream to given specification by hand
and machine method.
will describe where each of the
following drills are best suited
Twist drill (taper shank, parallel
shank, jobber drill and their
relative merits), flat drill,
counterbore drill and combination
center drill.
Assess the students.
22
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT
PRACTICE
Course: General metal Work I Course Code: CME 11 Contact Hours
7hrs/wk
Course Specification: Knowledge Requirement
General Objective 5.0: Understand the applications of various types of screw threads, rivet and cut
screws by hand.
Week Specific Learning Outcome Teachers Activities Resources
5.1 Sketch the thread forms below and
state their applications:-
- the ISO metric thread
- the unified thread
- Whitworth and British
fine threads
- British Association
(BA) thread
- British Standard pipe
- Square thread
- Acme thread
- Buttress thread.
5.2 Sketch and state the functions of:-
a. taps (taper tap,
second tap, plug)
b. tap wrench
c. die and die stock.
5.3 Explain the meaning of tapping size
or tapping drill and estimate its value in
given situations using formulae such
as:-
T = D - P
Where T = tapping
diameter
D = thread top
diameter
P = pitch
• Give detailed notes with diagrams that
will show the various forms of trade and
their uses.
• State the functions of taps, tap
wrench, die and die stock.
• Demonstrate how to produce
internaland external threach.
• Give detailed notes that will explain
the meaning of tapping size or tapping
drill and estimate its values using the
formula:
T = D - P
Where
T =
tapping
diamet
er
D =
thread
top
diamet
er and
P =
Pitch
Diagrams/charts of
thread forms
Sample of taps and
tap wrenches.
Parallel reamers,
taper reamers, and
twist drills.
23
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT
PRACTICE
Course: General metal Work I Course Code: CME 11 Contact Hours
7hrs/wk
Course Specification: Knowledge Requirement
General Objective 5.0: Understand the applications of various types of screw threads, rivet and cut
screws by hand.
Week Specific Learning Outcome Teachers Activities Resources
5.4 State precautions to be taken when
taping on the bench.
5.5 Describe and differentiate types of
rivets.
e.g. Snap and pan head, mushroom
and counter-sunk head, flat head, dod
rivet, etc.
5.6 Sketch the rivet set and state its
use.
5.7 Calculate the diameter of rivet and
riveting allowance in given situations.
• Prepare notes that will state precautions
to be taken when tapping on bench.
• Give notes and diagrams that will describe
and differentiate types of rivets, rivet sets,
and its uses and guide to calculate the
diameter of rivet and riveting allowance.
• Assess the students.
• Rivet sets,
drills.
General Objective 6.0: Understand the ISO tolerances and fits and its application in engineering
production.
Week Specific Learning Outcome Teachers Activities Resources
8
6.1 Differentiate between the following:-
a. nominal size
b. limits (upper and
lower)
c. tolerance (unilateral
and bilateral)
d. fit (clearance,
transition interference).
6.2 Explain the importance of tolerance
and fit in engineering production and
describe briefly the ISO system of limits
and fits.
6.3 Determine by calculation the
amount of tolerance and types of fit in
given situations.
• Give detailed notes that will differentiate
between nominal size, limits, tolerance and
fits.
• Prepare detailed note and diagrams that
will explain the important of tolerance and
fits in engineering production as well as
describing the ISO systems of limits and
fits.
• Give notes and explanations that will
guide in calculating the amount of tolerance
and types of fits in given situations.
• Assess the students.
•
• Charts on
tolerances, limits
and fits.
24
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT
PRACTICE
Course: General metal Work I Course Code: CME 11 Contact Hours
7hrs/wk
Course Specification: Knowledge Requirement
General Objective 7.0: Produce simple Engineering Components on the bench. Production
Week Specific Learning Outcome Teachers Activities Resources
9
7.1 Explain layout procedures
from working drawing of simple
engineering components or
tools such as:-
a. open ended
spanner
b. engineer's try
square
c. tool maker's
clamp
d. plate bracket
or gusset
(involving
rounds, angles,
holes)
e. centre
square.
7.2 Explain how to produce any
simple engineering component
to given specifications including
dimensions, tolerance and finish
7.3 Explain how to carry out
simple precision fitting project.
e.g. hexagonal mild steel bar
making push fit through a mild
steel plate.
• Teachers to prepare notes and explanations
to guide the students in producing simple
engineering components as in 7.1
• Assess the students.
• Lesson notes
• Diagrams and
charts.
25
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE
Course: General metal Work I Course Code: CME 11 Contact Hours
7hrs/wk
Course Specification: Knowledge Requirement
General Objective 8.0 Understand the essential features and working principles of the centre lathe and use
it to carry out basic operations such as plain turning, stepped turning, facing taper turning, chamfering, and
under-cutting
Week Specific Learning Outcome Teachers Activities Resources
10
8.1 Describe the essential features of a
centre lathe and state their functions
e.g lathe bed, headstock, tailstock, saddle or
carriage, etc.
8.2 Explain the working principles of the
centre lathe.
8.3 Identify and state the functions of centre
lathe accessories such as: catch or driving
plate, face plate, lathe dog or carrier, lathe
centres, fixed and travelling steadies.
8.4 Explain the difference between the
centre lathe, capstan lathe, in terms, of their
main features and functions.
8.5 Name types of cutting fluids used for
lathe turning operations and state their
composition and purposes.
8.6 Outline safety precautions to be
observed when working on the lathe
8.7 Sketch and describe common tools:
e.g butt-brazed tool, tipped tool, bit and
holder.
Note:
Tool description should
include tool materials e.g
plain carbon steel, high
speed steel, stellite,
cemented carbide, diamond.
8.8 Explain with sketches the functions of
tool angles rake, clearance, and state their
values for different metals to be machined.
• With the aid of a diagram explain the
essential features of a lathe machine
• Explain the working principles and basic
operations of a lathe machine
• Demonstrate some basic operations on
lathe machine.
• Prepare detailed notes that will describe
the essential features of center lathe and
their functions.
• Give notes and diagrams that will explain
the working principles of center lathe and
functions of its accessories.
• Give explanations that will show the
difference between center lathe and
capstan lathe in terms of their main features
and functions.
• Prepare notes that will list types of cutting
fluid use for lathe turning operations and
their composition and purposes.
• Prepare detailed notes and explanation
that will outlines safety precautions,
common tools and materials used in
marking them.
• Give detailed notes and diagrams that will
explain the functions of too angles (rake,
clearance) stating their values for different
metals to be machined.
• Assess the students
• Centre lathe
and accessories
like catch plates,
face plates,
centers, fixed
and traveling
steadies.
• Charts of
center lathe and
capstan lathe.
• Round nose
turning tool,
finishing tool,
site finishing,
knife tool, form
tool, parting off
tool, and boring
tool.
26
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT
PRACTICE
Course: General metal Work I Course Code: CME 11 Contact Hours
7hrs/wk
Course Specification: Knowledge Requirement
General Objective 8.0 Understand the essential features and working principles of the centre lathe
and use it to carry out basic operations such as plain turning, stepped turning, facing taper turning,
chamfering, and under-cutting
Week Specific Learning Outcome Teachers Activities Resources
11-12
8.9 Differentiate between various tool shapes
and state their uses e.g. Round nose rougher,
fine finishing, side finishing, knife tool, form
tool, parting off tool, boring tool, etc.
8.10 Explain with sketches the effects of
wrong setting of cutting tool: e.g. vibration and
chatter, tool rubbing against or digging into the
job.
8.11 Define cutting speed and feed with
respect to lathe operation.
8.12 Calculate the cutting speed and feed for
given turning operation.
8.13 Estimate the rate of metal removal and
time required for carrying out specified turning
operations
8.14 State precautions to be observed when
turning between centres.
8.15 Set up the lathe for and carry out basic
turning operations between centres.
8.16 Compute required taper dimensions from
given data using taper ratic angle formulae i.e.
8.17 Taper Ratio = [d2 - d1]/L
OR
where θ = taper angle
d1 - small and diameter
d2 = large end diameter
L = length of taper
• Give notes and diagrams of
various tool shapes and their
uses.
• Prepare detailed notes and
explanations to cover 8.10 to
8.15
• Solve many problems for the
students practice.
• Assess the students
• Charts on tool
height
• Charts and
diagrams of
different machining
operations.
27
General Metalwork II
COURSE: GENERAL METAL WORK
MODULE: CME 12 GENERAL METAL WORK II
PRE-REQUISITE: CME 11
CONTACT HOUR: 2 HRS THEORY 3 HRS PRACTICAL
GOAL: The module is designed to introduce the trainee to basic processes in mechanical
engineering such as forging, sheet-metal work and welding.
General Objectives:
On completion of this module, the trainee should be able to:
1. Understand the basic principles and processes of heat treatment of metal in the
workshop.
2. Produce simple engineering components by forging.
3. Understand the basic principles and techniques of gas and metal arc welding and apply
them in fabricating simple metal components.
PRACTICAL COMPETENCE:
On completion of this module students will be able to:
1. Carry out heat treatment of metal in the workshop
2. Produce simple engineering components by forging
3. Carryout gas/arc welding and apply them in fabricating simple engineering components
28
PRACTICAL TASKS
General Objective 1.0: On completion of the following practical task, the trainee will demonstrate the
following abilities:
Week Specific Learning Outcome: Teachers Activities Resources
1-2
1.1 Carry out the following heat
treatment processes Hardening,
tempering, annealing normalizing,
case hardening on given plain carbon
steel, engineering component or tool
1.2 Anneal copper, brass and
aluminium for various purposes
• Demonstrate heat treatment
processes and explain the
stages
• Demonstrate the annealing
process on brass, copper and
aluminium for various
purposes.
• Assess the students.
• Furnace, Forge tongs
29
General Objective 2.0: Forging Processes
Week Specific Learning Outcome: Teachers Activities Resources
3-4
5-8
2.1 Select appropriate forging tools
and produce to specification given
engineering components by forging
processes
a. upsetting - drawing
down
b. setting down -
twisting
c. forge welding
(scarf and spice
welds)
d. bending, turning
closed ring
e. forming an eye
• Demonstrate with appropriate
forging tools how to produce
some engineering components
and let the student practice till
they become competent
• Assess the students
• Anvil, swage block, leg vice,
forging hammers, hot set cold
set, sets of hammer, punchers,
drifts, fillers, top swage,
bottom swage, flatter, open
tongs, hallow bit
General Objective 3.0: Welding Processes
Week Specific Learning Outcome: Teachers Activities Resources
9-12
3.1 Set up and operate gas or metal
arc welding equipment in given
situations.
Note: Equipment operation should
include choice of correct nozzles or
electrode. Adjustment for correct gas
pressure/flame or voltage
3.2 Prepare joints for welding in given
situations
3.3 Weld given components by arc or
gas welding methods, and state
safety precautions to be observed
• List and identify gas and
metal arc welding equipment
• Demonstrate the use of both
gas and metal welding
equipment; and all the
students to practice
• Demonstrate to the students
how to prepare joints for
welding purposes
• Guide students to weld
various components using
both gas and arc welding
process and state safety
precautions to students to
practice till competent
• Oxygen, cylinders and
acetylene, regulations arc,
welding set goggles, shield,
electrodes, diagrams and
charts various welding joints
Assessment: Practical - 60% of overall assessment
30
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT
PRACTICE
MODULE: GENERAL METAL WORK II MODULE CODE: CME 12 CONTACT HOURS:
5hrs/wk
MODULE SPECIFICATION: KNOWLEDGE REQUIREMENTS
General Objective:1.0 Understand the basic principles and processes of heat treatment of metal in
the workshop.
Week Specific Learning Outcome Teacher Activities Resources
1-4
1.1 Explain briefly the structural behaviour of
plain carbon steel as it is heated from room
temperature to about 1000oC.
a. hardening
b. tempering
c. annealing
d. normalising
e. case-hardening.
1.2 Explain the meaning of hardening metal
work.
1.3 Outline safety precautions relating to heat
treatment processes apply them in given
situations.
• Prepare detail notes that will
explain the structural
behaviour of plain carbon
steel as it is heated from room
temperature to about 1000oC.
• Prepare detail notes that will
explain the meaning of
hardening in metalwork.
• Prepare notes that will
outline safety precautions
relating to heat treatment
processes.
• Assess the students
• Recommended Text
books
• Lesson notes, etc
31
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT
PRACTICE
MODULE: GENERAL METAL WORK II MODULE CODE: CME 12 CONTACT HOURS:
5hrs/wk
MODULE SPECIFICATION: KNOWLEDGE REQUIREMENTS
General Objective 2.0: Understand the techniques of producing simple engineering components by
forging.
Week Specific Learning Outcome Teacher Activities Resources
5-6
7-8
2.1 Explain with outline sketch the main
features and working principles of the black
smith's forge.
2.2 Describe and state the functions of
common forging tools. e.g anvil, swage block,
leg vice, forging hammers, hot and cold sets,
set hammer, punches and drifts, hardie,
fullers, top and bottom swages flatter, tongs
(open mouth, closed mouth, hollow bit, etc.).
2.3 Describe with sketches the following
forging operations:
a. upsetting
b. drawing down
c. setting down
d. twisting
e. forge welding (scarf and
splice welds)
f. bending
g. forming closed ring
h. forming an eye.
• Prepare detail notes and
diagrams that will explain the
main features and working
principles of the black smith's
forge.
• Prepare notes and diagrams
that will describe the functions
of common forging tools.
• Prepare detail notes that will
describe the following forging
operations: upsetting, drawing
down, setting down, twisting,
forge welding, bending,
forming closed ring, forming
an eye.
• Assess the students.
Forge and forging tools.
32
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT
PRACTICE
MODULE: GENERAL METAL WORK II MODULE CODE: CME 12 CONTACT HOURS:
5hrs/wk
MODULE SPECIFICATION: KNOWLEDGE REQUIREMENTS
General Objective 3.0 Understand the basic principles and techniques of gas and metal are welding
and apply them in fabricating simple metal components.
Week Specific Learning Outcome Teacher Activities Resources
9 - 12
3.1 Describe the equipment and explain the
basic principles and application of gas and
metal arc welding.
3.2 State the safety precautions to be
observed and apply them in given welding
situations.
• Prepare detail notes and
diagrams that will describe the
equipment and explain the
basic principles and
application of gas and metal
arc welding.
• Prepare diagrams of joints
that the students will practice.
• Prepare detail notes that will
state the safety precautions to
be observed during welding.
• Assess the students.
• Charts
• Oxygen cylinder
acetylene cylinder
regulations arc welding
set goggles, shield
electrode.
• Diagrams and charts
of various welding
joints, and techniques.
Week 13 Examination - Practical 60%, Theory 40%
33
Sheet metal Work
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
MODULE: CFW 11 - SHEET METALWORK
PRE-
REQUISITE:
CME 12
DURATION: 18 HOURS PER WEEK - 6 HOURS THEORY 12 HOURS PRACTICAL
GOAL: This module is designed to produce a skilled sheet metal work who has good knowledge
of the use and application of sheet metal working equipment, material, processes,
techniques and safety practices.
GENERAL OBJECTIVES
On completion of this module, the trainee should be able to:
1. Apply appropriate workshop processes, techniques and tools to mark out and form
projects in sheet metal work
2. Solder and braze various sheet metal projects with maximum safety.
3. Produce finished sheet metal project involving: edge stiffening, beading, finished, either
as part of the corporate production process or as an independent process.
4. Draw, develop and produce templates for production of sheet metal projects.
PRACTICAL COMPETENCE
On completion of this module the student will be able to
1. Mark out and form projects in sheet metal work
2. Solder and braze various sheet metal project with maximum safety
3. Produce finished sheet metal projects involving various production processes
4. Draw, develop and produce templates for production of sheet metal projects.
34
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: SHEET METAL WORK Course Code: CFW 11 Contact Hours: 18 per
week- L6: P12
Course Specification: Practical/theoretical content
General Objective: 1.0 Apply Appropriate Workshop Processes, Techniques And Tools To Mark Out,
And Form Pojects In Sheet Metal Work:
Week Specific Learning Outcome Teachers Activities Resources
Year 3
Term 1
1.1 Mark out the following projects
on sheet metal material applying
appropriate tools, techniques and
safety practices:
a. rectangular
container
b. funnels
c. cylindrical
container
• Demonstrate the marking out of
projects on sheet metal by applying
the appropriate techniques and
safety practices.
• Demonstrate marking out items
listed on sheet of metal
• Lesson plan
• Appropriate Tools and
Equipment
• Steel rule, divider,
scriber, compass and
chalkboard
1.2 Cut sheet metal to given sizes
using appropriate tools/machines
• Demonstrate sheet metal cutting
to given sizes using appropriate
tools and machine
• Lesson Plan
• Appropriate Tools and
Machines
1-2 1.3 Form sheet metal to given
shapes using appropriate tools,
machines and techniques
• Demonstrate the formation of
sheet metal
• Demonstrate methods of forming
these shapes.
• Lesson plan
• Appropriate Tools,
Machines and Equipment
3
1.4 Calculate allowance for joint
using the formula: grooved seam =
11/2x width of groover.
• Calculate allowance for joint using
the formula: grooved seam = 11/2x
width of groover, panned down and
knock-up joints.
• Lesson plan Chalkboard
3 1.5 Sketch the joint allowances on
the materials and notch the joints
• Sketch joint allowances on the
materials and notch
• Lesson plan Appropriate
Tools and equipment
35
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: SHEET METAL WORK Course Code: CFW 11 Contact Hours: 18 per
week- L6: P12
Course Specification: Practical/theoretical content
General Objective: 1.0 Apply Appropriate Workshop Processes, Techniques And Tools To Mark Out,
And Form Pojects In Sheet Metal Work:
Week Specific Learning Outcome Teachers Activities Resources
4-5
1.6 Make the following joints in
sheet metal:
a. solid corner joint
b. grooved seam
joint
c. panned down
joint
d. knocked up joint
• Demonstrate the process of
making the following joints:
• solid corner
• groove seam
• panned down
• knock-up
• Lesson plan
• Appropriate Tools and
Equipment
6
1.7 Name common rivets used in
metal work and state their
properties
• List and explain types of rivets
used in sheet metal and their
properties
Lesson plan Chalkboard
Samples of rivets.
36
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: SHEET METAL WORK Course Code: CFW 11 Contact Hours: 18 per
week- L6: P12
Course Specification: Practical/theoretical content
General Objective: 1.0 Apply Appropriate Workshop Processes, Techniques And Tools To Mark Out,
And Form Pojects In Sheet Metal Work:
Week Specific Learning Outcome Teachers Activities Resources
6
1.8 State common faults in riveting
e.g.
a. overlapping
b. cracked rivet
c. uneven ends,
etc.
• Explain common faults in riveting
• Show the listed defect to student
• Lesson plan
Charts/Posters
7
1.9 Drill and punch holes on joints
for riveting making sure that burrs,
are removed
• Demonstrate drilling and punching
of holes on sheet metal including
removal of burrs.
• Lesson plan Appropriate
Tools, Machine and
Equipment
7
1.10 Rivet joints satisfactorily using
correct sets
• Demonstrate riveting by using
appropriate rivet sets
• Lesson plan
Charts/Posters Various
Types of rivet Sets.
General Objective 2.0: Solder and braze various sheet metal projects with maximum safety.
Week Specific Learning Outcome Teachers Activities Resources
8
2.1 Identify the types of solders
used in sheet metal work and state
their compositions: e.g.
- tinman's solder,
grade
- self-flux solder
- resin-core solder,
etc
• List and identify types of solders
• show various types of solders
used in sheet metal work and state
their composition
• Lesson plan Charts
Various Types of solders
37
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: SHEET METAL WORK Course Code: CFW 11 Contact Hours: 18 per
week- L6: P12
Course Specification: Practical/theoretical content
General Objective 3.0: Produce finished sheet metal projects involving edge stiffening, beating
finishing, either as part of the corporate production process or as an independent process
Week Specific Learning Outcome Teachers Activities Resources
6
3.1 State the meaning of the
following terms:
a. edge-stiffening
b. beading
c. work hardening
d. beating
e. annealing
f. hollowing
g. raising
h. blocking
i. planishing
j. sand blasting
k. picking
l. lacquering
m. galvanizing
n. plating
o. painting
p. other items used
• Explain the meaning of the terms
listed in 3.1 (a - p)
• Give details note on the above.
• Show samples to students
• Lesson plan Posters
Chalkboard
• Finished sheet metal
projects involving terms
listed in 3,1 (a - p)
11 - 12
3.2 Calculate allowances for edge-
stiffening which include:
a. helming
b. wiring, using the
formula for wiring
allowance: 2D + 4T
(where D is the
diameter of wire
and T is the
thickness of metal)
• Solve problems involving
calculations of allowances for edge-
stiffening using the formula for
wiring allowance: 2D+4T (where D
is the diameter of wire and T is
thickness of metal
• Lesson plan Charts
Chalkboard
38
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: SHEET METAL WORK Course Code: CFW 11 Contact Hours: 18 per
week- L6: P12
Course Specification: Practical/theoretical content
General Objective 3.0: Produce finished sheet metal projects involving edge stiffening, beating
finishing, either as part of the corporate production process or as an independent process
Week Specific Learning Outcome Teachers Activities Resources
Year 3
Term 2
1 - 2
3.3 Mark out for edge-stiffening
using the calculated allowance
3.4 Produce projects involving
edge-stiffening such as:
a. beading
b. swaging
3.5 Know the mechanical properties
of the following materials used in
beating metal work:
a. brass
b. copper
c. aluminium
d. low carbon steel
3.6 Develop discs for making bowls
using workshop method
• Ask students to demonstrate the
marking out for edge-stiffening
• Ask students to demonstrate
projects involving edge-stiffening
after sample demonstration.
• Explain the mechanical properties
of materials used in beating sheet
metal work
• Ask students to demonstrate the
development of discs for making
bowls using workshop method
• Lesson plan Appropriate
Tools and Equipment
• Lesson plan Appropriate
Tools and Equipment
• Lesson plan Chalkboard
• Lesson plan Appropriate
Tools and Materials
3 - 4
3.7 Describe the processes of
raising, sinking, hollowing,
planishing and polishing sheet
metal work in copper or brass.
3.8 Estimate size of blank for
raising and polishing sheet metal
work in copper or brass.
3.9 Layout and cut out blanks for
raising, sinking or hollowing
process.
• Ask students to explain the
process of raising, sinking,
hollowing planishing and polishing
sheet metal work in copper or
brass.
• Ask students to draw the size of
blank for raising and polishing sheet
metal work in copper or brass
• Ask students to demonstrate the
laying out and cutting out blanks for
raising, sinking or hollowing
• Lesson plan, Chalkboard
Posters.
• Lesson plan Chalkboard
Compasses Dividers, etc.
• Lesson plan Chalkboard
Dividers Scribers, etc
39
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: SHEET METAL WORK Course Code: CFW 11 Contact Hours: 18
per week- L6: P12
Course Specification: Practical/theoretical content
General Objective 3.0: Produce finished sheet metal projects involving edge stiffening, beating
finishing, either as part of the corporate production process or as an independent process
Week Specific Learning Outcome Teachers Activities Resources
3 - 7
3.10 Select appropriate tools and equipment and apply
correct procedures to produce to specification by
raising, sinking or hollowing, given metal forming job.
Note: Sheet metal forming procedures should involve:
a. blank size estimation
b. blank preparation
c. heat treatment (annealing)
d. application of appropriate forming
process
e. cleaning
f. polishing; and
g. edge trueing
3.11 Produce bowls by the following process:
a. raising, using oval head wooden
mallet and repeated beating and
annealing;
b. hollowing, using a hollowed pipe or
cylinder, hollowing hammer and a
bossing mallet
c. blocking, using wooden block,
bossing mallet and blocking hammer.
Note: Safety precautions should be emphasized in the
processes
3.12 Remove dents from metal surfaces using the
following tools:
a. wheeling machine
b. dent eraser
c. planishing hammer and dollies
Note: Metal surfaces to be worked on include: bowls,
car fenders, metal boxes and other containers.
• Demonstrate and
explain process of
producing bowls by
raising, hollowing and
blocking using necessary
tools.
• list the safety precaution.
• Give student
project/assignment to
produce bowl.
• Explain and demonstrate
removal of dents from
metal surface.
• Give student assignment
on dent removal
• Ask students to
demonstrate removal of
dents using appropriate
tools and equipment
• Lesson plan
• Chalkboard
• Lesson plan,
Chalkboard
Appropriate Tools
and Equipment
Such as wheeling
machine,
planishing harmer,
dollies dent eraser
etc.
• Lesson plan,
Appropriate Tools
and Equipment.
40
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: SHEET METAL WORK Course Code: CFW 11 Contact Hours: 18 per
week- L6: P12
Course Specification: Practical/theoretical content
General Objective 3.0: Produce finished sheet metal projects involving edge stiffening, beating
finishing, either as part of the corporate production process or as an independent process
Week Specific Learning Outcome Teachers Activities Resources
8 - 9
3.13 Prepare surfaces for finishing
by applying the following
processes:
a. sand blasting the
surface
b. pickling with acid
c. sanding
3.14 Finish sheet metal projects by
using the following techniques:
a. lacquering
b. galvanizing
c. plating
d. painting
• Ask students to demonstrate
preparation of surfaces for finishing
using appropriate tools and
equipment.
• Ask students to demonstrate
finishing of sheet metal project by:
i. laquiring
ii. galvanizing
iii. plating
iv. painting etc.
• Lesson plan, Related
Tools and Equipment.
• Lesson plan Related
Tools and Equipment
41
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: SHEET METAL WORK Course Code: CFW 11 Contact Hours: 18 per
week- L6: P12
Course Specification: Practical/theoretical content
General Objective 4.0: Draw, develop and produce templates for the production of projects
Week Specific Learning Outcome Teachers Activities Resources
10 - 12
4.1 State materials used for templates
a. Wood
b. Cardboard, etc
4.2 Produce and read blue-prints (which
include working drawings) of sheet metal
projects
4.3 Develop templates by using the
following methods for the indicated items:
a. Parallel line method - for
elbows and T-pieces,
square and rectangular
trays etc.
b. Radial line method - for
right cone, oblique cone,
etc
c. Triangulation method -
for transition piece and
ductings.
d. Cutting plane method -
for inclined plane, branch 'T'
pieces.
e. Development of
complicated irregular
shape.
4.4 Produce various sheet metal items, e.g.
ductings to central air-conditioning systems,
buckets for water, drawer cabinets
(furniture), etc.
4.5 Produce at least two project in sheet
metal work
• Explain materials used for
making templates
• Demonstrate the production
and reading of blue-prints of
sheet metal projects
• Develop templates using the
methords listed for indicated
items in 4.3 (a - e)
• Ask students to produce
various sheet metal project
using templates methods
• Ask students to demonstrate
the production of various
sheet metal projects
• Test and evaluate the
trainee in production
processes
• Lesson plan
Chalkboard related
Materials
• Lesson plan
chalkboard Charts
Appropriate Tools and
Equipment
• Lesson plan
Chalkboard Instrument
• Lesson plan Related
Tools, Equipment and
Materials
• Lesson plan
• Tool, Equipment and
materials
42
Gas Welding and cutting
Programme: National Technical Certificate in Fabrication AND Welding Engineering Craft Practice
Module: CFW 12 Gas Welding and Cutting
Prerequisite CFW 11
Duration 18 hours/Week 6 theory, 12 Practical
Goal: This module is designed to equip the trainee with the knowledge, attitude and skills to carry
out gas welding and cutting jobs on all types of metals
General Objectives:
1. Understand and apply the general safety precautions related to gas welding
2. Know and apply successfully various gas welding processes/operations including the
acetylene and oxy-fuel gas cutting processes.
3. Know and weld together different types of non-ferrous and ferrous metals
4. Understand the process of building up worn metallic shafts or surfaces
5. Understand and apply the fuel gas cutting process in cutting metals to given specifications
6. Know the various welding defects and rectify them
Practical Competence
On completion of this module, the student will be able to:
1. Apply general safety precaution
2. perform various gas welding operations
3. Weld together different types of ferrous and non-ferrous metals
4. Build up worn shaft or surfaces
5. Apply fuel gas cutting process in cutting metals to given specification
6. Identify and rectify various welding defects
43
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: GAS WELDING AND CUTTING Course Code: CFW 12 Contact Hours: 18
per/week 6 Tutorials
12 practicals
Course Specification: THEORETICAL CONTENT
General Objective: 1.0 Understand and apply the general safety precautions related to gas welding
WEEK Specific Learning Outcome Teachers Activities Resources
Year 3
Term 1
1
1.1 Carry, transport and store full and
empty gas cylinders safety using
appropriate equipment
• Explain how to carry
transport and store full and
empty gas cylinders
• Explain how to carry,
transport and store full and
empty gas cylinder safety
using appropriate equipment
• Lesson plan Charts
or Posters and
appropriate equipment
2
1.2 Apply appropriate safety precautions
while carrying out the following:
a. Gas welding operations
on containers which have
been emptied of chemicals,
inflammable or explosive
liquids.
b. Gas welding near
containers with inflammable
materials, e.g. petrol tank;
and
c. Gas welding in confined
spaces.
• List and explain safety
precautions involved in gas
welding operations
• List and explain the use of
protective wears for carrying
out gas welding operations
• Ask students to demonstrate
appropriate safety precaution
while carrying out items 1.2 (a-
c)
• Lesson plan Charts
etc.
3
1.3 Select, use and care for protective
wears for carrying out gas welding
operations. E.g.
a. welding goggles
b. welding shields
c. gloves
d. boots etc.
• Ask students to identify the
use and care for protective
wears for carrying out gas
welding operations e.g.
welding goggles, welding
shield, globes and boots etc.
• Chalkboard, Lesson
plan and Protective
wears
44
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: GAS WELDING AND CUTTING Course Code: CFW 12 Contact Hours: 18
per/week 6 Tutorials
12 practicals
Course Specification: THEORETICAL CONTENT
General Objective 2.0: Know and apply successfully various gas welding processes/operations
including the acetylene and oxy-fuel gas cutting processes.
WEEK Specific Learning Outcome Teachers Activities Resources
4
5
6
2.1 Identify the following gas welding
equipment, describing their features, functions,
applications and care:
a. generators
b. regulators
c. blow pipes
d. nozzles
e. hoses
f. gas cylinders and their
colours
g. economizers
h. check valves
2.2 Differentiate between the following types of
generators, stating their merits and demerits
a. water-to-carbide generator
b. carbide-to-carbide
generator
2.3 Identify the main parts of the generator
e.g. hydraulic back pressure valve purifiers,
carbide trays etc.
2.4 Distinguish between high and low pressure
systems of welding
2.5 State the composition of calcium carbide
2.6 Generate acetylene using calcium carbide
guiding against danger of over-charge
2.7 Identify types of welding rods stating their
properties, compositions, and uses.
2.8 Differentiate between welding and cutting
torches
• Show the students items
listed in 2.1
• Identify and explain the
features and functions and
applications listed in 2.1
• Explain the difference
between the two types of
generators stating advantages
and disadvantages
• Explain the main part of
generator
e.g. hydraulic back pressure
valves, purifiers, carbide trays
etc.
• State the difference between
low and high pressure
systems of gas welding
• Explain the composition of
calcium carbide
• Demonstrate how to
generate acetylene using
calcium carbide
• Show and explain the types
of welding rods to students
stating their properties,
composition and uses.
• With the aid of torches
explain the difference between
welding and cutting torches.
• Chalkboard and
Lesson plan
• Chalkboard,
Lesson plan,
sketches/Charts
• Chalkboard
Lesson plans
leveled drawings.
• Lesson plan, low
and high pressure
gas welding sets.
• Lesson plan,
Chalkboard and
calcium carbide
• Lesson plan,
calcium carbide
motor and generator
• Lesson plan
Chalkboard and
different types of
welding rods.
• Lesson plan,
chalkboard Welding
and Cutting torches.
45
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE
COURSE: GAS WELDING AND CUTTING Course Code: CFW 12 Contact Hours: 18 per/week 6 Tutorials 12 practicals
Course Specification: THEORETICAL CONTENT
7 8 9 10
2.9 Identify the following flames and describe how they are derived in the oxy-acetylene welding processes:
a. oxidizing flame b. carbonizing flame c. neutral flame
2.10 state the instances of the application/uses of the type of flames named in 2.9 above 2.11 Light the welding torch and adjust the flame to each of the types named in 2.9 above 2.12 Prepare plate surfaces and run beads:
a. without filler rods b. with filler rods
2.13 Make neat labeled sketches indicating the conventional symbols for the welder joints. E.g.:
a. butt joint b. fillet joint c. lap joint
2.14 Prepare plate surfaces for the following welding joints and tack weld:
a. butt joint b. fillet joint c. lap joint
2.15 Weld metals together in down-hand or flat position 2.16 State the functions of backing bars and strips 2.17 Apply backing bars and strips according to instructions on the side of a weld to control penetration.
• Explain the three types of flame in gas welding:- oxidizing, carbonizing and neutral • Describe uses of the types of flame named in 2.9 above • Demonstrate the lighting and setting up of the flames named in 2.9 above • Demonstrate plate surface preparation for running beds, with and without filler rods • Draw neat labeled sketches showing the conventional symbols for welded joints:
i. butt ii. fillet iii. lap. etc
• demonstrate running of beads with and without filler rods on plate surfaces • show students sketches of weld joints listed in 2.13 • give students detailed notes on the above and work to practice • Demonstrate tack welding and joints listed in 2.1 • Explain the preparation of plate surfaces for
i. butt ii. fillet and iii. lap joints
• Set up and tack weld the prepared pieces • Give detailed notes • Ask students to demonstrate how to weld metal together in down-hand or flat position • Explain the function of backing bars and strips • Demonstrate the use of backing bars and strips for controlling penetration.
• Lesson plan, chalkboard, Sketches/charts.
- do - - do -
• Lesson pla, plates and related equipment/tools • Lesson plan, Sketches/charts and Chalkboard • Lesson plan, materials and appropriate tools and equipment • Sample of weld jionts
46
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE
COURSE: GAS WELDING AND CUTTING Course Code: CFW 12
Contact Hours: 18 per/week 6 Tutorials 12 practicals
Course Specification: THEORETICAL CONTENT
General Objective 3.0: Know and weld together different types of non-ferrous and ferrous metals
WEEK Specific Learning Outcome Teachers Activities Resources
11 12
3.1 Identify the following types of non-ferrous and ferrous metals Non-ferrous
a. copper b. aluminium c. brass d. bronze e. tin f. zinc g. lead h. iconel and monel
Ferrous a. wrought iron b. mild steel c. stainless steel d. cast iron
And state their composition 3.2 Describe the general characteristics of materials used in fabrication engineering including simple consideration of physical properties such as:
a. strength b. ductility c. malleability d. hardness e. tenacity f. fusion g. distortion h. toughness and resistance to impact in relation to uses and common manufacturing processes, and weldability of materials.
3.3 State the common fabrication engineering uses of cast iron, mild steel, high yield steel, cast steel, austenite stainless steel, copper and common copper alloys, aluminium and common aluminium alloys, common forms or supply and the general limitations of cast forms. 3.4 State the properties and composition of fluxes used for welding non-ferrous metals
• Show students samples of metals listed in 3.1 • Explain the different types of non-ferrous and ferrous metals and their composition, as listed in 3.1 • Explain the characteristics listed in 3.2 • Ask students to explain the general characteristic of metal s used fabrication with particular reference to mechanical and physical properties in items 3.2 (a - h) • List and explain the properties and composition of fluxes used for welding non ferrous metals • Explain the properties and composition of fluxes used for ferrous and non-ferrous metals
• Lesson plan, Chalkboard Samples Ferrous and Non-ferrous Metals listed in 3.1 • Lesson plan, Chalkboard and Charts • Fabricated samples of items listed in 3.3
47
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE
COURSE: GAS WELDING AND CUTTING Course Code: CFW 12 Contact Hours: 18 per/week 6 Tutorials 12 practicals
Course Specification: THEORETICAL CONTENT
General Objective 3.0: Know and weld together different types of non-ferrous and ferrous metals
WEEK Specific Learning Outcome Teachers Activities Resources
Year 3 Term 2 1 - 2 3
3.5 Enumerate two functions of fluxes in the welding of non-ferrous metals 3.6 Prepare and weld non-ferrous metals using appropriate fluxes. 3.7 Identify cast-iron in terms of:
a. types b. its composition c. its properties
3.8 Prepare cast-iron for welding by:
a. chamfering or beveling of edges to specification b. pre-heating to specification
3.9 Fusion weld cast iron components 3.10 Identify suitable flux for bronze welding and state its composition 3.11 Prepare bronze to specifications3.12 Weld bronze to specifications 3.13 State reasons for post-heating bronze welds 3.14 Identify and state the type, composition and properties of common stainless steels used in metal work. 3.15 Prepare stainless steel components for welding
• Explain two function of fluxes used in the welding of ferrous and non-ferrous metals using appropriate fluxes • Demonstrate the welding of ferrous and non-ferrous metals using appropriate fluxes • Show students the different types of cast iron • Explain their composition and properties • Demonstrate preparation of cast iron for welding • Demonstrate the fusion welding of cast iron components • Explain the composition of suitable flux for bronze welding • Demonstrate preparation of bronze components for welding, avoiding sharp edges • Demonstrate the welding of bronze to specification • Ask the student to demonstrate above • Explain the purpose for post-heating bronze welds • Explain and state the types of composition and properties of common stainless steels • Demonstrate the preparation of stainless steel components for welding • Ask students to practice above
• Lesson plan, Charts, Appropriate Tools and Equipment • Lesson plan, Chalkboard and Sample of Cast Irons • Lesson plan, Charts, Pieces of Cast iron, Related Tools and Equipment
- do - • Lesson plan, Chalkboard • Lesson plan, chalkboard bronze related tools and equipment • Lesson plan, charts, Pieces of Bronze, Related Tools and Equipment. • Lesson plan Chalkboard
- do - • Lesson plan, Chalkboard Stainless Steel, Tools and Equipment
48
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: GAS WELDING AND CUTTING Course Code: CFW 12 Contact Hours: 18
per/week 6 Tutorials
12 practicals
Course Specification: THEORETICAL CONTENT
General Objective 3.0: Know and weld together different types of non-ferrous and ferrous metals
WEEK Specific Learning Outcome Teachers Activities Resources
4 - 6
3.16 Weld stainless steel using appropriate
welding rods and techniques and observing
safety practice.
3.17 Apply appropriate treatment to the
welded joint e.g. washing in soapy water,
brushing off lux residue, etc. to avoid weld
decay
3.18 Explain the effect of welding together
two different metals
3.19 Identify dis-similar metals such as:
a. copper and brass
b. steel and cast-iron
c. aluminium and steel, etc
3.20 State the effect of dilusion in welding
3.21 Explain the principles of the following
welding processes:
a. cladding
b. stelliting
c. hard surfacing
d. brazing
3.22 Prepare and weld dis-similar metals
using correct techniques and observing the
correct safety practice.
• Demonstrate the welding of
stainless steel using
appropriate welding rods and
observing safety practices
• Demonstrate the appropriate
treatment to the welded joint
to avoid weld decay
• State the effects of welding
together two different metals
• Explain dissimilar metal
listed in 3.19 (a-c)
• Describe the effect of
dilusion in welding
• State the principles of the
following welding process in
3.21 (a-d) giving examples
• Demonstrate the welding of
dissimilar metals observing
correct techniques and safety
practices
• Give detailed notes on all of
the above
• Students should be asked to
carryout projects involving all
of the above
• Lesson plan, Charts
Pieces of Stainless
Steel, related Tools
and Equipment
• Soapy cold water,
Worm Water Wire
brushes
• Lesson plan,
Chalkboard and
sketches/Charts
• Lesson plan
Chalkboard
- do -
- do -
• Lesson plan,
materials tools and
equipment.
• Sample of metals
49
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: GAS WELDING AND CUTTING Course Code: CFW 12 Contact Hours: 18
per/week 6 Tutorials
12 practicals
Course Specification: THEORETICAL CONTENT
General Objective 4.0: Understand the process of building up worn metallic shafts or surfaces
WEEK Specific Learning Outcome Teachers Activities Resources
7
4.1 Identify the composition of given worn
metallic shafts or other worn metallic
objects
4.2 Discuss the properties of the metal used
for given worn metallic shafts or other
objects
4.3 Build up given worn metallic surfaces to
specifications using suitable filler rods and
applying the correct technique/sequence of
operation
• Explain the composition of
given worn metallic shaft or
objects
• Describe the properties of
the metal used for given worn
metallic shaft or other objects
• Demonstrate how to built up
worn metallic surfaces to
specification, using suitable
techniques and filler rods
• Lesson plan,
Chalkboard, Worn out
Metallic Part or Shaft
- do -
• Lesson plan and
Appropriate materials,
related tool and
equipment
50
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE
COURSE: GAS WELDING AND CUTTING Course Code: CFW 12 Contact Hours: 18 per/week 6 Tutorials 12 practicals
Course Specification: THEORETICAL CONTENT
General Objective 5.0: Know the various welding defects and rectify them
WEEK Specific Learning Outcome Teachers Activities Resources
8 9 10 - 12
5.1 Describe the following defects in gas welded joints:
a. undercut b. lack of fusion (side, root, inter-run) c. porosity d. slag inclusion e. unequal leg length (uneven alignment) f. lack of reinforcement
5.2 State how the weld defects in (5.1) above can be avoided in oxy-acetylene welding 5.3 Beware of the following test to detect defect in welded joint
a. Non-destructive test such as visual inspection, x-ray test, gamma ray test, ultrasonic tests
5.4 Apply the following tests to detect defects in welded joints:
a. Destructive test such as bend test, macro and micro examination sulphur prints, mick and tee fillet test
5.5 Rectify welded joints defects enumerated in 5.1 above 5.6 Produce project involving the fabrication of:
a. General safety precaution b. Ferrous and non-ferrous metal welding c. Various joints defect and their rectification
• List and identify various welding defects to students • Explain the defects in gas welded joint as listed in 5.1 (i-vi) • Give detailed notes on all of the above • Explain how the weld defects in (5.1) above can be avoided in oxy-acetylene welding • Explain the use of test to detect defect in welded joint a non-destructive test • Give detailed notes • Explain and Demonstrate how to use of test to detect defects in welded joints: destructive and non-destructive test • Ask students to demonstrate correction of welding defects enumerated in (5.1) above • Test and evaluate the students in production process
• Lesson plan Chalkboard Sketches/charts • Lesson plan, Chalkboard, Sketches/Charts • Lesson plan • Films • Video taper • Industrial visit/execution etc. • Lesson plan, Test piece Related Tools and Equipment • do - • Lesson plan • Tools, equipment and materials
Week 13 Examination - Practical 60%, Theory 40%
51
Metal Arc Welding
Programme: National Technical Certificate in Fabrication AND Welding Engineering Craft Practice
Module: CFW 13 Metal Arc Welding
Prerequisite CFW 12
Duration 18 hours/Week 6 theory, 12 Practical
Goal: This module is designed to equip the trainee with the knowledge, attitude and skills to carry
out Metal arc welding job involving various ferrous and non ferrous metals in positions
General Objectives:
1. Understand And Apply Safety Precautions Related To Metal Arc Welding
2. Understand the construction, features and working principles of arc welding machines and
accessories
3. Make different types of welded joints in all positions
4. Know the properties of various types of ferrous and non-ferrous metals and weld them
together
5. Build up worn metallic shafts; air surfaces using metal arc welding
6. Cut Metals to various specifications using metal Arc Cutting process
7. Know various welding defects and rectify them
Practical Competence
On completion of this module, the student will be able to:
1. Apply general safety precaution related to arc welding
2. Use the Arc welding machine in fabricating simple engineering projects involving different
types of joints and position involving different welding techniques
3. cut metals to various specification using metal arc cutting processes
4. identify and rectify various welding defects
52
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: METAL ARC WELDING Course Code: CFW 13 Contact Hours: 18 hrs
per week - 6 tutorials;
12 practicals
Course Specification: Theoretical/Practical contents
General Objective 1.0: Understand And Apply Safety Precautions Related To Metal Arc Welding
Week Specific Learning Outcome Teachers Activities Resources
Year 3
Term 2
1
1.1 List and explain the hazards related to
metal arc welding, e.g.
a. arc eye
b. burning
c. radiation
d. electric shock
e. toxic fumes, etc
• Explain the hazard related to
metal arc welding as listed in 1.1
• Discuss how these listed
hazards can be avoided
• Give detailed notes
• Lesson plan
• Chalkboard and
Charts
2
1.2 Select, use and care for protective
wears required while carrying out metal
arc welding operations, e.g.
a. head and hand shield
b. hand gloves
c. apron
d. spats
e. boots and leggings, etc.
• List and Describe the use and
care for protective wears while
metal arc welding as listed in 1.2
• Show these items to students
and give detailed notes
- do -
• items listed in 2.1
• chalkboard, charts
3
1.3 Apply appropriate safety precautions
while carrying out:
a. arc welding in confined
spaces
b. arc welding empty
vessels or drums that had
contained inflammable or
toxic materials
c. arc welding near
inflammable materials
• Discus Safety precautions while
carrying out a - c
• Ask students to demonstrate the
appropriate safety precaution
while carrying out arc welding as
listed in 1.3
• Lesson plan Arc
Welding Equipment
53
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: METAL ARC WELDING Course Code: CFW 13 Contact Hours: 18 hrs
per week - 6 tutorials;
12 practicals
Course Specification: Theoretical/Practical contents
General Objective 2.0: Understand the construction, features and working principles of arc welding
machines and accessories
Week Specific Learning Outcome Teachers Activities Resources
4
5
2.1 Differentiate between A.C and D.C arc
welding machine
2.2 Know the working principles of a.c.
and d.c. welding machines
2.3 List and state the functions of the
welding accessories, e.g.
1. welding load
2. earth load
3. electrode holder
4. chipping hammer
5. wire brush, etc.
2.4 Know the advantages and
disadvantages of a.c. and d.c. welding
systems
2.5 set and use the a.c. and d.c. welding
machines for specified voltage/amperage
operation, observing safety precaution
2.6 Explain the following processes of
electrode manufacture:
a. solid extrusion process
b. extruded with re-
enforcing coating
c. dipped process
Show students the different
features in the construction of the
arc welding machine
Explain the differences between
a.c. and d.c. arc welding
machines
State the working principles of
a.c. and d.c. welding machines
• Explain the function of welding
accessories as listed in 2.3
• Show students these items
• List and explain the advantages
and disadvantages of a.c. and
d.c. welding machines
• Demonstrate the use of a.c. d.c.
welding machines for specified
voltage and amperage observing
safety precautions
• Describe the processes of
electrode manufacturing as listed
in 2.6
6. Chalkboard Lesson
plan Arc Welding
Equipment
7. Lesson plan
Chalkboard Chart
• Chalkboard Arc
Welding Accessories
etc.
• Chalkboard Lesson
plan ac/dc welding
machine etc.
- do -
- do -
54
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: METAL ARC WELDING Course Code: CFW 13 Contact Hours: 18 hrs
per week - 6 tutorials;
12 practicals
Course Specification: Theoretical/Practical contents
General Objective 2.0: Understand the construction, features and working principles of arc welding
machines and accessories
Week Specific Learning Outcome Teachers Activities Resources
6
2.7 Describe with sketches the material
composition of different types of
electrodes
2.8 State the conventional electrode
classification system
2.9 Select electrode materials according
to parent system
2.10 State the basic methods of electrode
care, e.g.
a. dry storage
b. oven storage
c. safe handling
2.11 Strike metal arc and maintain the arc
• Explain with sketches, material
composition of different types of
electrode
• Explain the conventional
electrode classification system
• Explain the selection of
electrode materials according to
parent metals
• Explain the basic method of
electrode care with reference to
i. dry storage
ii. oven storage
iii. safe handling
• Demonstrate how to strike and
maintain the arc
• Ask students to practice striking
metal arc and maintaining the arc
• Lesson plan,
Chalkboard
Sketches/Charts
- do -
• Lesson plan,
Appropriate Electrode
etc.
• Electrode drying
oven, lesson plan etc.
• Lesson plan,
Appropriate Arc
Welding Equipment
and tools
7
2.12 Carry out with proficiency the
following arc welding
techniques/operations:
a. weaving
b. laying of multi-runs, etc.
Note: Safety regulations and requirements
must be observed.
• Demonstrate with proficiency
the following arc welding
techniques/operations:
i. weaving
ii. laying of multi-
runs etc
observing safety
regulations as
required
• Lesson Plan,
Welding Machine
Tools and
Accessories
55
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: METAL ARC WELDING Course Code: CFW 13 Contact Hours: 18 hrs
per week - 6 tutorials;
12 practicals
Course Specification: Theoretical/Practical contents
General Objective 3.0: Make different types of welded joints in all positions
Week Specific Learning Outcome Teachers Activities Resources
8
9
3.1 Describe with sketches the application
of the following joints in metal fabrication:
a. square butt
b. single vee
c. double vee
d. single U Fillet
e. open corner, etc.
3.2 Know the factors that govern the
selection of joints to be used for a project
e.g.
a. type of metal
b. thickness of metal
c. shape of plate
d. position of joint
3.3 Interpret the various arc welding
symbols and conventions used in
engineering working drawings
3.4 Prepare edges for welding the
following joints:
a. square butt
b. single vee
c. double vee
d. single U
e. double U
f. open corner
3.5 Weld the prepared joints in (3.4)
above in flat positions observing
necessary safety precautions.
• Explain with sketches the
application of the following joints
in metal fabrication:
i. square butt
ii. single vee
iii. double vee
iv. single U
v. fillet and
vi. open corner
etc
• Describe the factors that govern
the selection of joint to be used
for a project with reference to 3.2
(a-d)
• Show and explain the various
arc welding symbols use in
engineering working drawing
• Demonstrate preparation of
edges for welding joints in 3.4 (e-
f)
• Give students projects that
require the joints listed in 3.4 (a-f)
• Demonstrate welding of joint in
3.4 above in flat position
observing necessary safety
precautions
• Ask students to practice the
above
• Chalkboard,
Sketches/Charts
lesson Plan
• Lesson plan
Chalkboard
• Lesson plan and
Chalkboard
• Lesson plan,
Process of metals,
Appropriate Tools and
Equipment
• Lesson plan
Appropriate tools and
Related Materials
56
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: METAL ARC WELDING Course Code: CFW 13 Contact Hours: 18 hrs
per week - 6 tutorials;
12 practicals
Course Specification: Theoretical/Practical contents
10
11 - 12
3.6 Prepare metal surfaces for:
a. multi-run welds
b. weaving welds
3.7 Make multi-run welds
3.8 Make weaving welds
3.9 Weld joints in the following positions:
a. vertical position
b. horizontal position
c. overhead position
3.10 Weld pipes and flanges in various
fixed positions
3.11 Weld pipes and flanges in rotated
position
3.12 Weld pipes using the store pipe
method
Demonstrate preparation of metal
surfaces for
i. multi-run welds
ii. weaving welds
• Demonstrate the making of
multi-run welds
• Demonstrate making weaving
welds
• Explain the welding of joint in
the following position:
i. vertical
ii. horizontal and
iii. overhead
• Discuss the welding pipes and
flanges in various fixed position
• Demonstrate the welding of
pipes and flanges in rotated
positions
• Demonstrate the welding of
pipes using the store pipe
methods
• Give students projects involving
the welding processes above
Materials
Welding machine
Flat bars and other
related materials
required for welding
57
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: METAL ARC WELDING Course Code: CFW 13 Contact Hours: 18 hrs
per week - 6 tutorials;
12 practicals
Course Specification: Theoretical/Practical contents
General Objective 4.0: Know the properties of various types of ferrous and non-ferrous metals and
weld them together
Week Specific Learning Outcome Teachers Activities Resources
Year 3
Term 3
1
2 - 3
4.1 Identify by inspection various types of
ferrous metals. e.g. cast iron, steel, etc.
4.2 List four physical properties of cast
iron
4.3 Know the behaviour of the following
types of cast iron when welded:
a. grey cast iron
b. white cast iron
c. malleable cast iron
4.4 State the use and carry out the
following procedures:
a. pre-heating
b. post-heating
c. preing
d. fixed - -free - -end
welding, etc.
4.5 Prepare cast iron pieces by
chamfering and pre-heating, etc. and weld
them satisfactorily, using the following
techniques:
a. fusion
b. bronze
c. studing
d. buttering
• Explain by inspection various
types of ferrous metals: cast iron,
steel, stainless steel, etc
• Discuss four physical properties
of cast iron
• Describe the behaviour of the
following types of cast iron when
welding as in 4.3 (a-c) above
• Explain the uses and
demonstrate the following
procedures as in 4.4 (a-d).
• Demonstrate the preparation of
cast iron pieces by chamfering
and pre-heating and weld
satisfactorily as listed in 4.5 (a-d)
• Lesson plan,
Chalkboard and
Various Type of
Ferrous Metals
• Lesson plan,
Chalkboard
• Samples of grey cast
iron, white cast iron,
and malleable cast
iron
• Lesson plan Welding
Equipment and
Appropriate Tools.
58
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: METAL ARC WELDING Course Code: CFW 13 Contact Hours: 18 hrs
per week - 6 tutorials;
12 practicals
Course Specification: Theoretical/Practical contents
General Objective 4.0: Know the properties of various types of ferrous and non-ferrous metals and
weld them together
Week Specific Learning Outcome Teachers Activities Resources
4
4.6 Identify various types of non-ferrous
metals, e.g.
a. copper
b. aluminium
c. brass
d. iconel
e. monel
• State various types of non-
ferrous metals as in 4.6 (a-e)
• Show samples of the listed
above to students
• Lesson plan
Chalkboard Different
Types of non-ferrous
metal
5
4.7 Describe the composition and state
the mechanical properties of the non-
ferrous metals named in 4.6 above,
mechanical properties to include:
a. ductility
b. malleability
c. hardness
d. tenacity
e. fusion
f. fatigue
g. effect of heat
h. distortion
• Explain the composition and
state mechanical properties of
non-ferrous metals in 4.6 above
as listed in 4.7
• Lesson plan
Chalkboard and
Charts.
59
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: METAL ARC WELDING Course Code: CFW 13 Contact Hours: 18 hrs
per week - 6 tutorials;
12 practicals
Course Specification: Theoretical/Practical contents
General Objective 4.0: Know the properties of various types of ferrous and non-ferrous metals and
weld them together
Week Specific Learning Outcome Teachers Activities Resources
4.8 Select suitable electrodes and
machines for welding various types of
given non-ferrous metals
• Explain the selection of suitable
electrode and mechanics for
welding various type given non-
ferrous metals
• Lesson plan
Different sizes of
Electrode and
Welding Machine
4.9 Outline appropriate heat treatment
method for a finished welding of non-
ferrous metal
• Discuss through demonstration,
the appropriate heat treatment
method for finished weld of non
ferrous metals
• Lesson plan
• Furnace
• Samples of non
furnace 6
4.10 Weld the following non-ferrous
metals and apply the appropriate heat
treatment:
a. copper
b. bronze
c. aluminium
d. brass
e. iconelmonel
• Demonstrate the welding of non-
ferrous metals and apply the
appropriate heat treatment
method as in 4.10 (a-e)
• Lesson plan, welding
equipment and
appropriate tools
60
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: METAL ARC WELDING Course Code: CFW 13 Contact Hours: 18 hrs
per week - 6 tutorials;
12 practicals
Course Specification: Theoretical/Practical contents
General Objective 4.0: Know the properties of various types of ferrous and non-ferrous metals and
weld them together
Week Specific Learning Outcome Teachers Activities Resources
General Objective 5.0: Build up worn metallic shafts; air surfaces using metal arc welding
Week Specific Learning Outcome Teachers Activities Resources
7
5.1 Identify the composition of given worn
metallic shafts or other worn metallic
parts. e.g. gear teeth that can be restored
by arc welding.
5.2 Discuss the properties of the given
worn metallic parts to be restored by arc
welding
5.3 Build-up given worn metallic parts to
specification using appropriate techniques
including controls against distortion
• Describe the composition of a
given worn metal shafts or parts
e.g. gear teeth that can be
restored by arc welding
• State the properties of given
worn metal parts to be restored
by arc welding
• Demonstrate the building up of
worn metal parts to specification,
using appropriate techniques and
control against distortion
• Lesson plan
Chalkboard, and Worn
metal shaft and gear
teeth
• Lesson plan,
Welding Machine and
Appropriate Tools and
Equipment
General Objective 6.0: Cut Metals to various specifications using metal Arc Cutting process.
Week Specific Learning Outcome Teachers Activities Resources
6.1 Know the principles and application of the following arc cutting methods in metal fabrication:
a. air arc method b. carbon arc method c. oxy arc method
• Explain the principles and application of the following arc cutting methods in metal fabrication:
i. air arc method ii. carbon arc method and iii. oxy arc method
• Lesson plan Chalkboard Sketches/Charts • Welding equipment and accessories
8
6.2 Identify arc cutting electrodes and state their compositions and uses
• Explain arc cutting electrode stating their composition and uses
• Lesson plan chalkboard various arc cutting electrode
6.3 Cut metals with facility using the different cutting methods named in 6.1 above.
• Demonstrate the cutting of metals using the different cutting method named in 6.1 above
• Lesson plan Arc Cutting Electrode and Welding Equipment
61
General Objective 7.0: Know various welding defects and rectify them
Week Specific Learning Outcome Teachers Activities Resources
9
7.1 Describe major defects in arc welded
joints including undercut; lack of fusion
(side, root, inter-run); porosity; slag
inclusion (oxide entrenchment); unequal
leg length (uneven alignment); and lack of
reinforcement.
• Explain major defects in arc
welded joint as in 7.1
• Show students samples of these
defects
• Give detailed notes
• Lesson plan
Chalkboard,
Sketches/charts
• Samples of defects
10 7.2 Know how the weld defects in 7.1
above can be avoided
• Explain how weld defects in 7.1
above can be avoided.
• Lesson plan,
Chalkboard
7.3 Apply the following tests to detect
defects in arc welded joints:
a. non-destructive tests
such as visual inspection,
x-ray test, gamma, ray
test, ultrasonic test,
magnetic track detector
penetrant;
b. destructive tests such
as bend test, macro and
micro examinations
sulphur print, izod and
fatigue
• Demonstrate the application of
the following test to detect defects
in arc welded joints as shown in
7.3 (a-b)
• Lesson plan,
Chalkboard, Testing
Apparatus
11
7.4 Rectify welded joint defects named 7.1
above
• Explain how to correct defects in
welded joints named in 7.1 above
- Do -
12
7.5 Produce project involving the
application of:
a. General safety
precaution
b. Using both AC and DE
machines
c. Ferrous and non-
ferrous metals
d. Different type of joints
in all positions and defect
etc
• Test, evaluate the students in
the production process
• Lesson plan
• Material, tool and
equipment
Week 13 Examination - Practical 60%, Theory 40%
62
Structural Steel Work
PROGRAMME: National Technical Certificate In Fabrication And Welding Engineering Craft
MODULE: CFW 14- Structural Steel Work
DURATION: 18 Hours/week 6 Tutorial; 12 Practical
GOAL: The Module is designed to provide the trainee with knowledge and skill to enable him
produce simple finished structural steel work projects with safety
General Objectives:
On completion of this module, the trainee should be able to:
1. Understand the safety rules as applicable to structural steel work
2. Use and Care for Tools and Equipment used in Structural Steel Work
3. Know the structural properties of materials used in structural steel work and make simple
calculations related to their strength.
4. Produce simple structural steel projects on the shop floor
5. Understand the process of manufacture of iron and steel
6. Assemble simple structural steel components
7. Know the effect of corrosion on structural steel materials and apply protective coating
against corrosion.
Practical Competence
On completion of this module, the student will be able to:
1. Comply with general safety related to structural steel work
2. Use tools and equipment correctly
3. Identify properties of structural steel working materials
4. Produce structural steel projects
5. Assemble structural steel components
6. Apply protective coating against corrosion
63
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: STRUCTURAL STEEL WORK Course Code: CFW 14 Contact Hours: 18 hrs
per week 6 tutorials; 12
practicals
Course Specification: Theoretical/Practical contents
General Objective 1.0 Understand the safety rules as applicable to structural steel work
Week Specific Learning Outcome Teachers Activities Resources
Year 3
Term 2
1
1.1 Select, use and care for the
following protective wears used in
structural steel work:
a. gloves
b. aprons
c. boots
d. goggles, etc
• Explain the use and care for
protective wears used in
structural steel work
• Show students items listed in 11
• Demonstrate how to take care
of these items
• Give detailed notes
• Lesson plan
Chalkboard
• Posters
• Related Protective
Wears
1.2 Know safety rules for the following
operations in structural steel work:
a. rules for storage of
full and empty gas
cylinders
b. rules for lifting of
structure
c. rules for transporting
of structures, etc.
• Explain the safety for operations
in structural steel work and give
detailed notes
• Lesson plan
Chalkboard
• Posters
• Necessary Tools and
Equipment
2
1.3 Apply the safety rules in carrying out
operations named in 1.2 above.
• Demonstrate the application of
safety rules in carrying out
operations mentioned in 1.2
above
- do -
64
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: STRUCTURAL STEEL WORK Course Code: CFW 14 Contact Hours: 18 hrs
per week 6 tutorials; 12
practicals
Course Specification: Theoretical/Practical contents
General Objective 2.0: Use and Care for Tools and Equipment used in Structural Steel Work
Week Specific Learning Outcome Teachers Activities Resources
3
2.1 Select and use common hand tools
used in structural steel work: e.g.
a. hammers (assorted)
sheers
b. spanners (assorted)
dog
c. drills (assorted) dice
d. punches dollies, etc
e. chisels
f. screw drivers
g. pliers
h. strips
List common hand tools used in
structural steel work
Explain their uses
Show students these tools
Give detailed notes
Ask student to sketch these tools
Lesson plan,
Chalkboard Appropriate
Tools and Equipment
2.2 Identify and use with facility the
following power tools used in structural
steel work: e.g.
a. riveting hammer
(assorted)
b. holder on
c. impact wrenches
d. grinder
e. torque spanners
f. straight edge etc.
• List and explain the use of
power tools used in structural
steel work
• Show the student these tools
• Demonstrate using these tools
• Give detailed notes
• Lesson plan
Appropriate Tools and
Equipment
65
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: STRUCTURAL STEEL WORK Course Code: CFW 14 Contact Hours: 18 hrs
per week 6 tutorials; 12
practicals
Course Specification: Theoretical/Practical contents
General Objective 2.0: Use and Care for Tools and Equipment used in Structural Steel Work
Week Specific Learning Outcome Teachers Activities Resources
4
5
2.3 Identify, use and care for the
following structural steel working
equipment: e.g.
a. cranes (assorted)
b. straightening
machine
c. circular sewing
machine
d. loafty platform
e. cropper
f. shearing machine
g. punching machines
h. drilling machine
i. guillotine
j. bending machine
k. rolling machine
l. brake pens
m. tape, twine and
chalk
n. trammel
• List the equipment in 2.3
• Explain the use of each
• Explain the care of each
equipment
• Show the students each of
these equipment physically where
available. If not show them the
picture
• Ask student to produce diagram
of each equipment
• Give detailed notes
• Lesson plan
Chalkboard, charts
Appropriate Tools and
Equipment
6
2.4 Maintain tools, machines and
equipment used in structural steel work
e.g. by:
a. cleaning
b. oiling
c. greasing
d. regrinding, etc
• Demonstrate how to maintain
tools, machine and equipment
used in structural steel work
• Lesson plan
Appropriate Tools,
Equipment and
Materials
• Oil and grease cans.
• Grinding machine
66
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: STRUCTURAL STEEL WORK Course Code: CFW 14 Contact Hours: 18 hrs
per week 6 tutorials; 12
practicals
Course Specification: Theoretical/Practical contents
General Objective 3.0: Know the structural properties of materials used in structural steel work and
make simple calculations related to their strength.
Week Specific Learning Outcome Teachers Activities Resources
7
3.1 Describe with sketches the following
forms of structural steel materials e.g.
a. plates (various
thicknesses)
b. universal channel
c. universal beams
d. rolled steel joist
e. T-bar
f. Angle bar
g. Check plates
(assorted)
h. Bridge beams, etc.
3.1 Describe with sketches the following
forms of structural steel materials:
i. e.g. plates (various
thicknesses)
j. universal channel
k. universal beams
l. rolled steel joist
m. T-bar
n. Angle bar
o. Check plates
(assorted)
p. Bridge beams, etc.
• Sketch and explain forms of
structural steel materials
• Give detailed notes on each of
the equipments
• Asked students to sketch these
equipment
• Lesson plan,
Chalkboard,
Posters/Charts.
• Samples of equipment
where available
67
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: STRUCTURAL STEEL WORK Course Code: CFW 14 Contact Hours: 18 hrs
per week 6 tutorials; 12
practicals
Course Specification: Theoretical/Practical contents
General Objective 3.0: Know the structural properties of materials used in structural steel work and
make simple calculations related to their strength.
Week Specific Learning Outcome Teachers Activities Resources
8
3.2 Intepret conventional symbols and
abbreviations used for representing
structural steel sections
3.3 Apply standard specifications, e.g.
Nigerian standard (where available) -
American or British standards to
structural steel work design.
3.4 State the use and limitations of the
structural steel materials named in 3.1
above
3.5 Apply Hooke's Law in the design of
given simple structural elements.
• Ask students to sketch and
explain conventional symbols and
abbreviations used in
representing structural steel
section
• Explain and apply standard
specifications used in structural
steel work design
• Explain the use and limitations
of the structural steel materials in
3.1
• Explain and apply Hooke's Law
in the design of simple structural
elements
• Lesson plan
Chalkboard Charts.
• Lesson plan
Chalkboard, Charts
• Lesson plan
Chalkboard
• Lesson plan
Chalkboard
3.6 Distinguish between the following
stresses in structural steel-work:
a. tensile stress
b. compressive stress
c. shear stress
• Explain and state the
differences of stresses in
structural steel work
• Lesson plan
Chalkboard Charts
3.7 Know simple calculations involving
practical applications of tensile,
compressive and shear stresses, e.g. in
riveted and welded joints
• Explain simple calculations
involving practical application of
stresses in riveted joint, welded
joints etc.
• Give student some problems to
solve
• Lesson plan
Chalkboard 9
3.8 Read structural steel work drawing
and sketch simple structural steel work
details.
• Draw and interpret structural
steel work drawing and sketches
of simple structural steel work
details
• Lesson plan
Chalkboard Sample
drawings and sketches
68
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: STRUCTURAL STEEL WORK Course Code: CFW 14 Contact Hours: 18 hrs
per week 6 tutorials; 12
practicals
Course Specification: Theoretical/Practical contents
General Objective 4.0: Produce simple structural steel projects on the shop floor
Week Specific Learning Outcome Teachers Activities Resources
10
4.1 Calculate allowances for forming
thick metal or angle bar rings using the
following methods:
a. meanline method
b. neutral line method
• Explain calculations of
allowances for forming thick metal
or angle bar rings using meanline
and neutral line method
• Solve some problems
• Lesson plan
Chalkboard sketches
11
4.2 Produce simple projects in structural
steel work e.g. stanchion bar plate rafter
hunches, etc.
• Give students projects to
demonstrate the production of
simple projects in structural steel
work
• Lesson plan
Appropriate tools
equipment and
materials
12 4.3 Develop templates with regular
surfaces
• Demonstrate how to develop
templates with regular surfaces
• Lesson plan Drawing
instruments
Year 3
Term 3
1
4.4 cut out templates from the following
materials:
a. wood
b. cardboard
c. any other suitable
materials
• Demonstrate how to cut
templates from various materials
• Ask student to cut out template
on wood, cardboard etc
• Lesson plan
Appropriate Materials
Tools and Equipment
2
4.5 Reproduce simple jobs on structural
steel materials using templates cut in
4.4 above
• Give student Project to
demonstrate how to reproduce
simple jobs on structural steel
materials using templates in 4.4
above
• Lesson plan
Appropriate Materials
Tools and Equipment
3
4.6 sketch and produce simple working
jigs, e.g. jig for mass production of
stanchions, rafters, etc., on the shop
floor
• Demonstrate how to sketch and
produce simple working jigs.
• Ask students to do the same
• Lesson plan
Appropriate Tools and
Equipment.
69
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: STRUCTURAL STEEL WORK Course Code: CFW 14 Contact Hours: 18 hrs
per week 6 tutorials; 12
practicals
Course Specification: Theoretical/Practical contents
General Objective 5.0: Understand the process of manufacture of iron and steel
Week Specific Learning Outcome Teachers Activities Resources
5.1 Sketch a blast furnace and describe
its working principles
• Sketch and label a blast furnace
and explain the working principles
• Note: Student should visit
industry/factory to see a typical
blast furnace.
• Students are asked to sketch
and label blast furnace
• Lesson plan
Chalkboard
Posters/Chart Industrial
Visit
5.2 Give the name of fuel and state the
composition of charge used in blast
furnace
• Ask students to state the type of
fuel and the composition of
charge used in blast furnace
Lesson plan
chalkboard, charts
5.3 Explain the working principles of
Bessemer process with the aid of a
sketch
• Ask students to state the
working principles of a Bessemer
process with the aid of a sketch.
• Students are asked to sketch
Bessemer converter
- do -
4
5.4 Outline the characteristics of pig
iron, cast iron and low carbon steel
• List the characteristics of pig
iron, cast iron and low carbon
steel
- Charts
70
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: STRUCTURAL STEEL WORK Course Code: CFW 14 Contact Hours: 18 hrs
per week 6 tutorials; 12
practicals
Course Specification: Theoretical/Practical contents
General Objective 6.0: Assemble simple structural steel components
Week Specific Learning Outcome Teachers Activities Resources
6.1 Know the uses of fixtures and bolts
in the assembly of structural
components
• Explain the uses of fixtures and
bolts in the assembly of structural
components
• Give detailed notes
• Lesson plan
Chalkboard, bolts and
fixtures
5 6.2 Assemble simple structural
components such as rafter bracing,
simple canopy simple roof trusses, etc.
Note: Assembly should
involve basic jointing
operations, e.g. bolting,
riveting and welding
• Demonstrate how to assemble
simple structural components,
using bolts, rivets and welding
operation
• Show samples of some of these
assemblies
• Lesson plan
Appropriate Tools and
Equipment
General Objective 7.0: Know the effect of corrosion on structural steel materials and apply
protective coating against corrosion.
Week Specific Learning Outcome Teachers Activities Resources
6
7.1 Name some common causes of
corrosion on steel e.g.
a. atmospheric
b. chemical such as
electrolytic action.etc
Ask students to list some
common causes of corrosion on
steel
Show student samples of
corroded steel.
Lesson plan Chalkboard
Sample of corroded
steel
7
7.2 Describe the effect of corrosion on
structural steel, e.g.
a. weakening of
structure
b. defacing of steel
• Ask students to explain the
effects of corrosion on structural
steel
- do -
8
7.3 Know the purposes for applying
undercoat to structural steel
components
• Explain the purposes for
applying undercoat to structural
steel components
- do -
71
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING
CRAFT PRACTICE
COURSE: STRUCTURAL STEEL WORK Course Code: CFW 14 Contact Hours: 18 hrs
per week 6 tutorials; 12
practicals
Course Specification: Theoretical/Practical contents
General Objective 7.0: Know the effect of corrosion on structural steel materials and apply
protective coating against corrosion.
Week Specific Learning Outcome Teachers Activities Resources
9
7.4 Prepare the surfaces of structural
steel components for finishing with the
following methods:
b. brushing
c. de-greasing
d. de-scaling
• Demonstrate how to prepare the
surface of structural steel
components for finishing
• Ask the student to perform the
operation above
• Lesson plan
Appropriate Tools and
Equipment
10
7.5 State the composition of common
undercoat used for structural steel work
• List and explain the composition
of common undercoat used for
structural steel work.
• Lesson plan
Chalkboard, Charts,
and samples of under
coat
11
7.6 Apply suitable undercoat to
structural steel components. E.g. red
oxide, metalization
Note: Observe safety precautions in the
use of the undercoats.
• Demonstrate the application of
suitable undercoat to structural
steel components and observe
safety precautions.
• Lesson plan
Appropriate Tools and
Equipment
12
7.7 Produce project involving the
application of safety rules in structural
steel work
• Test, evaluate the student in the
process of the production
• Lesson plan
• Material, tool and
equipment
Week 13 Examination - Practical 60%, Theory 40%
72
Advanced National Technical Certificate
Welding
PROGRAMME: Advanced National Technical Certificate In Fabrication And Welding Engineering Craft
MODULE: CFW 21-Welding
DURATION: 15 Hours/week 4 Tutorial; 11 Practical
GOAL: The Module is designed to equip the trainee with advanced skills and knowledge
required to carry out gas shielded arc and ancillary welding process with proficiency
General Objectives:
1. Understand and Apply the general safety precautions related to gas shielded arc and
ancillary welding processes
2. Understand the constructional features and the working principles of TIG and MIG welding
machines and accessories
3. Understand the basic principles and techniques of TIG and MIG welding and be able to
apply them in fabricating simple machine component parts
4. Apply appropriate workshop processes and techniques to mark out and form projects for
welding
5. Make different types of welded joints in all positions
6. Understand and apply the fuel-gas cutting process in cutting metals to given specification.
Practical Competence
On completion of this module, the student will be able to:
7. Comply with general safety related to gas shielded arc and ancillary welding process
8. Apply basic principles and techniques of TIG and MIG welding in fabricating simple
machine component parts
9. Use workshop process techniques and tools to mark out and form projects in welding
10. perform welding operations in all position involving different types of joints
73
11. Cut metals to given specification using the fuel gas cutting process
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per
week 4 Tutorials; 11
Practicals
Course Specification: Theoretical/Practical contents
General Objective 1.0: Understand and Apply the general safety precautions related to gas shielded
arc and ancillary welding processes
Week Specific Learning Outcome Teachers Activities Resources
1
1.1 Know the importance of a safe working
environment with particular reference to
personal safety, and the student's
responsibility to others.
a. State the reasons for
the use of face protection
and the wearing of
protective clothing.
b. Describe the dangers
inherent in the following:
grinding, oxy-acetylene
welding, metal arc welding,
shearing, bending, folding,
compressed air, lifting
tackle.
c. State the correct
methods for handling,
storing and using
compressed gas cylinders.
d. State the dangers of
electric shock and
describe user precautions.
• Explain the importance of a
safe working environment
with respect to safety to self
and others as per 1.1 (a-d)
• Welding tools, lesson
plan chalkboard goggle
and appropriate
equipment
74
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per
week 4 Tutorials; 11
Practicals
Course Specification: Theoretical/Practical contents
General Objective 1.0: Understand and Apply the general safety precautions related to gas shielded
arc and ancillary welding processes
Week Specific Learning Outcome Teachers Activities Resources
1.2 List and explain the hazards related to
gas shielded arc welding. e.g.
a. arc eye
b. burning
c. radiation
d. electric shock
e. toxic fumes, etc.
• Describe the hazard related
to gas shielded arc welding
as listed in 1.2 (a-e)
• Lesson plan
• Chalkboard. And chart
1.3 Select, use and care for the protective
wears used in gas shielded arc welding
operations: e.g.
a. head and pan shields
b. hand gloves
c. apron
d. spats
e. boots, etc.
• Explain the use and care for
the protective wears used in
gas shielded arc welding
operations as in 1.3 (a-e)
• Show students items listed
in 1.3 (a-e)
• Ask student to sketch the
items
• Lesson plan and
protective wears
1.4 Apply with facility, appropriate safety
precautions required in carrying out TIG
and MIG welding operations:
a. in confined spaces
b. on empty vessels or
drums that had contained
inflammable or toxic
materials near inflammable
materials, e.g. petrol
tanker, etc
• Demonstrate with facilities
appropriate safety
precautions required in
carrying out TIG and MIG
welding operation as listed in
1.4 (a-c)
• Lesson plan and
protective wears
• Welding Equipment
75
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents
General Objective 2.0: Understand the constructional features and the working principles of TIG and MIG welding machines and accessories
Week Specific Learning Outcome Teachers Activities Resources
2.1 Explain the constructional features and functions of the following equipment and accessories:
a. DC and AC machines b. High frequency unit c. Gas economizer d. Regulator e. Air and water cooled torches f. Pedal switch g. Gas nozzles h. Suppressor unit i. Flow meter j. Contactor k. Nylon hoses, etc
a. State the constructional features and functions of equipment and accessories listed in 2.1 (a-k) b. Show students items listed in 2.1 (A-K) c. Ask students to sketch the items d. Give student short notes on each
e. Lesson plan, chalkboard, sketches and charts and some accessories
2.2 State the advantages and disadvantages of AC and DC welding systems 2.3 Identify the electrodes and filler wires for TIG process and state their composition2.4 Identify the following gas cylinders by their colour codes:
a. argon b. helium c. carbon dioxide d. hydrogen e. nitrogen
2.5 State the main advantage of the TIG process over other welding processes.
f. Explain the advantages and disadvantages of AC and DC welding system g. Describe the electrode and filler wires for TIG process and state their composition and show students samples of electrode and filler wire h. Ask students to explain and show gas cylinders by their colour code as listed in 2.4 (a-e) i. Call on students to identify them j. Give detailed notes k. Ask students to explain the main advantage of TIG process over other welding processes
l. Lesson plan, chalkboardm. Lesson plan, chalkboard and TIG accessories n. Lesson plan and chalkboard
76
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per
week 4 Tutorials; 11
Practicals
Course Specification: Theoretical/Practical contents
General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and
be able to apply them in fabricating simple machine component parts
Week Specific Learning Outcome Teachers Activities Resources
3.1 Explain the following major process
variables and characteristics.
a. Electrical
b. Direct current, pulsed
current alternating current
rectification and
modulation volt,/ampere
characteristics arc
initiation.
c. Electrodes
d. Types, shapes, current
carrying capacities and
applications.
e. Shielding Gases
f. Pure and mixed,
functions and applications
g. d) Filler materials and
their composition
• Ask students to describe the
major process variables and
characteristics as listed in 3.1
(a-d)
• Demonstrate TIG welding to
students, emphasizing types
of current rectification and
modulation
• Show students the different
types of electrodes and the
profiles
• Explain the importance of
shielding glasses
• Give detailed notes on all of
the above
• Lesson plan, Chalkboard
• Sketches/Charts
accessories and materials
3
3.2 Appreciate the applications of TIG
welding process and select suitable
operating characteristics for the welding of
the following: low carbon steels, high yield
steels, stainless alloys, nimonic alloys,
titanium alloy, cooper alloys and aluminum
alloys.
• Explain the application of
TIG welding process and
state operating characteristics
for the welding listed in 3-2
and give detailed notes
• Lesson plan,
• Chalkboard
• Charts
77
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per
week 4 Tutorials; 11
Practicals
Course Specification: Theoretical/Practical contents
General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and
be able to apply them in fabricating simple machine component parts
Week Specific Learning Outcome Teachers Activities Resources
3.3 Compare backing materials, purging
and under-bead shielding as a means of
producing acceptable welds.
• Explain backing materials
purging and under-bead
shielding as mean of
producing acceptable welds.
• Lesson plan and
chalkboard
3.4 Explain the effects of joint preparation
on the production of acceptable and
economical welds by the TIG welding
processes
• State the effect of joint
preparation on the production
of acceptable and economical
welds by TIG welding
processes and give notes.
- do -
4
3.5 Explain the importance of adhering to
specifications, codes and standards for
TIG welding processes.
• State the importance of
adhering to specification
codes and standards for TIG
welding processes and give
notes
- do -
78
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per
week 4 Tutorials; 11
Practicals
Course Specification: Theoretical/Practical contents
General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and
be able to apply them in fabricating simple machine component parts
Week Specific Learning Outcome Teachers Activities Resources
5
3.6 List and state the functions of TIG
welding accessories, e.g. electrode holder,
earth lead, welding lead, etc.
3.7 Describe with sketches the materials
composition of different types of electrodes
used for TIG welding.
3.8 Set and use the TIG welding machines
to weld the following metals - aluminum,
copper and stainless steel at specified
voltage observing safety precautions
3.9 Explain the difference between TIG
and MIG processes.
• Explain the functions of TIG
welding accessories as listed
in 3.6
• With the aid of sketch or
diagram, ask student to
sketch each of the items
• Ask students to explain with
sketches the materials
composition of different types
of electrodes use for TIG
welding.
• Ask students to demonstrate
the setting up and use of TIG
welding machines for welding
metals as listed in 3.8
observing all safety
precautions
• Call on students to perform
above.
• Ask students to state the
differences between TIG and
MIG processes
• Lesson plan, Chalkboard
and
• TIG welding accessories
• do -
• Lesson plan
• TIG welding machine
equipment and materials.
• Lesson plan Chalkboard
and Charts
79
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per
week 4 Tutorials; 11
Practicals
Course Specification: Theoretical/Practical contents
General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and
be able to apply them in fabricating simple machine component parts
Week Specific Learning Outcome Teachers Activities Resources
3.10 Explain the factors that govern the
design of joints requiring MIG and TIG
processes e.g.
a) type of metal
b) thickness of metal
c) shape of material
d) position of joint; and
welding various metal
joints using TIG and MIG
processes in the following
positions:
a) flat
positions
b)
confined
space
c) other
positions
• State the factors that govern
the design of joints requiring
MIG and TIG processes as
listed in 3.10 (a0c) and
demonstrate the welding of
metal joints using TIG and
MIG processes in positions
listed in 3.10
• Ask the students to practice
the process
• Give detailed notes
• Lesson plan Chalkboard
• TIG welding equipment
and accessories and
materials.
3.11 Sketch and explain the meaning of
the various arc welding
symbols/conventions, e.g. symbol of a
single V butt weld with sealing run, symbol
of weld on both sides etc.
• Sketch and state the
meaning of the various arc
welding symbols/conventions
as out line in 3.11
• Lesson plan Chalkboard
and
• Sketch/chart
80
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per
week 4 Tutorials; 11
Practicals
Course Specification: Theoretical/Practical contents
General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and
be able to apply them in fabricating simple machine component parts
Week Specific Learning Outcome Teachers Activities Resources
3.12 Weld metals using at least six of the
following ancilliary welding processes:
a. resistance
b. spot
c. seam
d. projection
e. submerged arc
f. flash butt
g. fire cracker
h. stud
i. atomic hydrogen, etc.
j. Thermit
k. Helectrode
l. plasma arc
• Demonstrate the welding of
metals using at least six of
the ancillary welding
processes listed in 3.12 (a-l)
• Prepare and give detailed
notes
• Explain the factors
governing the choice of any of
the ancillary processes
named in 3.12 above
6
3.13 Outline the factors governing the
choice of any of the ancilliary processes
named in 3.12 above
3.14 Produce using TIG and MIG welding
techniques the following items:
a. pressure vessels
b. pipe flanges
c. boiler drums
d. box section chassis
e. tool post guides on a
lathe machine
f. fixed clusters, etc.
3.15 Weld the fixed cluster in a gearbox.
• Demonstrate the use of TIG
and MIG welding techniques
on the listed items in 3.14 (a -
f)
• Give detailed notes
• Demonstrate the welding of
fixed cluster in a gearbox
• Lesson plan
Ancilliary/welding
equipment, tools and
materials
- do -
• Lesson plan, TIG and
MIG welding equipment,
accessories and materials
- do -
81
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per
week 4 Tutorials; 11
Practicals
Course Specification: Theoretical/Practical contents
General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and
be able to apply them in fabricating simple machine component parts
Week Specific Learning Outcome Teachers Activities Resources
3.16 Explain the principles of MIG welding
and state the techniques of consumable
and non-consumable electrodes and wires
and their composition.
3.17 Explain the details of equipment used
and describe the setting of their controls
3.18 state the effects of wrong setting, type
of defects, causes and elimination
• State the principles of MIG
welding and explain the
techniques of consumable
and non-consumable
electrode and wires and their
composition.
• Give detailed notes
• State the details of
equipment used and explain
the setting of their controls
• Explain the effect of wrong
setting, type of defects,
causes and elimination.
• Lesson plan Chalkboard
Appropriate electrodes
and wires
- do -
• Lesson plan, Chalkboard
Sketches/Chart
82
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per
week 4 Tutorials; 11
Practicals
Course Specification: Theoretical/Practical contents
General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and
be able to apply them in fabricating simple machine component parts
Week Specific Learning Outcome Teachers Activities Resources
3.19 Explain the following major process
variable and characteristics:
a. Modes of metal transfer
b. Electrical - power supply
characteristics
-
characteri
stics
relative to
modes of
metal
transfer
- current
density,
speed,
feed,
voltage
and
inductanc
e.
c. Shielding gases - pure
and mixed, functions and
Applications.
• State the major process
variables and characteristics,
listed in 3.19 (a-c)
- do -
83
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents
General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and be able to apply them in fabricating simple machine component parts
Week Specific Learning Outcome Teachers Activities Resources
3.20 Apply the MIG welding process and select suitable operating characteristics for welding:
a. M.S (Mild Steel) in different welding position b. S.S (Stainless Steel) c. Aluminium d. Pipes and pipe joints e. Titanium alloys f. Copper alloys, etc.
• Demonstrate the MIG welding process and show suitable operating characteristics for welding of items listed in 3.20 and give detailed notes
• Lesson plan • MIG equipment & Accessories/Materials
7
3.21 Explain the principles of spot welding and describe the size and shape of electrode in relation to metal thickness 3.22 State the purpose of spot welding in machine shop or industry 3.23 State the effects of current, time and force in spot welding process 3.24 Evaluate the effect of heat balance and heat shrinkage in welding 3.25 Describe the methods of external cooling on welds 3.26 Discriminate between the types of welds e.g. plasma arc or sub-merge arc and spot welding
• Ask students to state the principle of spot welding and explain the size and shape of electrode in relation to thickness • Explain the purpose of spot welding in machine shop or industry • Explain the effect of current time and force in spot welding process • Explain the effect of heat balance and heat shrinkage in spot welding • Explain the method of external cooling on welds • Explain the difference between the types of welds produced by plasma arc, sub-merged arc and spot welding • Give detailed notes on all of the above
• Lesson plan • Chalkboard • Spot welding machine - do -
84
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per
week 4 Tutorials; 11
Practicals
Course Specification: Theoretical/Practical contents
General Objective 4.0: Apply appropriate workshop processes and techniques to mark out and form
projects for welding
Week Specific Learning Outcome Teachers Activities Resources
4.1 Mark out the following projects in
welding - applying appropriate tools,
techniques and safety practice:
a. Rectangular container
b. Cylindrical shaped
objects
c. Solid corner joints
d. Butt joint
• Demonstrate the marking
out of project in welding as
listed in 4.1 (a-d) applying
appropriate tools, techniques
and safety practices
• Give students projects
involving items listed in 4.1
• Lesson plan Spot
Welding, Appropriate
Equipment, Tools,
Materials and Protective
Wear
4.2 Prepare bronze components for
welding avoiding sharp edges and weld to
specification.
• Ask students to demonstrate
preparation and welding of
bronze component for
avoiding sharp edges and
welding to specifications and
give notes
• Lesson plan, Welding
Equipment Tools and
Materials
4.3 Prepare stainless steel components for
welding using welding rods and techniques
and observing safety precautions.
• Demonstrate preparation
and welding of stainless steel
components using welding
rods and techniques and
observing safety precautions.
• - do -
4.4 Identify and state the type, composition
and properties of common stainless steels
used in metal work
• List types of stainless steel
• Explain their composition
• Discus their properties and
uses
• Lesson plan,
Chalkboard, Sketches
Chart and Different pieces
of stainless steel.
85
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per
week 4 Tutorials; 11
Practicals
Course Specification: Theoretical/Practical contents
General Objective 5.0: Make different types of welded joints in all positions
Week Specific Learning Outcome Teachers Activities Resources
5.1 Describe with sketches the application
of the following joints in metal fabrication:
a. Square butt
b. Single vee
c. Double vee
d. Single U
e. Open corner, etc.
• Explain with sketches the
application of the following
joint in metal fabrication as
listed in 5.1 (a-e)
• Ask students to sketch the
joints
• Give detailed notes on each.
• Lesson plan
• Chalkboard and
• Charts
9
5.2 Prepare edges for welding the joints in
5.1 observing safety rules.
• Demonstrate how to prepare
edge for welding the joints in
5.1 observing safety rules
• Ask the student to prepare
edges for welding joints in 5.1
• Lesson plan, Necessary
Tools, Equipment and
Materials
5.3 Weld pipes and flanges in various
positions e.g:
a) fixed position
b) rotated position
• Demonstrate how to weld
pipes and flanges in various
position - both fix and rotated
- do -
5.4 Prepare metal surfaces and make
multi-run and weaving welds
• Demonstrate how to prepare
metal processes and make
multi run and weaving
- do -
10 5.5 Weld joints in vertical, horizontal and
overhead positions
• Demonstrate how to weld
joint in vertical, horizontal and
overhead positions.
• Ask the student to carry out
the above operations and
give detailed notes
- do -
86
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: WELDING Course Code: CFW 21 Contact Hours: 15 per
week 4 Tutorials; 11
Practicals
Course Specification: Theoretical/Practical contents
General Objective 6.0: Understand and apply the fuel-gas cutting process in cutting metals to given
specification.
Week Specific Learning Outcome Teachers Activities Resources
6.1 State the principles and applications of
fuel-gas cutting process, e.g.:
a. Manual
b. Machine
• Explain the principles and
applications of fuel-gas
cutting as listed in item 6.1 (a-
b)
• Give the students, projects
involving the two processes
Lesson plan, Chalkboard
11 6.2 Describe various fuel-gas used in oxy-
fuel cutting e.g:
a. acetylene
b. propane
c. butane
d. coal-gas, etc
• Ask students to state
various fuel-gases used in
oxy-fuel cutting gas listed in
6.2 (a-d)
- do -
6.3 State the advantages and disadvantages of using the above-named fuel-gas for oxy-fuel cutting operations
• Explain the advantages and disadvantages of using above named fuel gases for oxy-fuel cutting operation.
- do -
6.4 Prepare templates for the mass production of given objects of regular or irregular shapes by profile cutting
• Demonstrate how to prepare templates for mass production of given object by profile cutting
• Lesson plan, Equipment Tools and Materials
6.5 Cut smooth, curved, circular and straight objects using the hand cutting torch including oxy-lance and flame gauging
• Demonstrate and explain how to cut smooth, curved circular and straight objects using hand flame gauging.
• Lesson plan Appropriate Equipment Tools and Materials
12
6.6 Produce project involving Arc and Ancillary welding process
Assist student to design and produce projects involving Arc and ancillary welding. Test and evaluate the studentGive detailed notes on all of the above
Arc and ancillary welding equipment.
Week 13 Examination - Practical 60%, Theory 40%
87
Structural Mechanics and Specification
PROGRAMME: Advanced National Technical Certificate In Fabrication And Welding Engineering Craft
MODULE: CFW 22-Structural Mechanics and Specification
DURATION: 15 Hours/week 4 Tutorial; 11 Practical
GOAL: The Module is designed to provide the trainee with the knowledge of simple structural
Mechanics and standard specifications required to appreciate steel designs and working
drawings
General Objectives:
1. Apply simple structural mechanics and standard specifications to structural steel work
design.
2. Interpret and produce structural steel working drawings
Practical Competence
On completion of this module, the student will be able to:
12. Apply with facilities, standard specification for structural steel construction
13. perform simple calculation on structural steel construction
14. interpret and produce simple structural steel working drawings
15. produce projects applying simple structural mechanics and standard specification to
structural steel work
88
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: STRUCTURAL MECHANICS AND
SPECIFICATION
Course Code: CFW 22 Contact Hours: 15
per week - 4
tutorials; 11
practicals
Course Specification Theoretical/Practical contents
General Objective 1.0: Apply simple structural mechanics and standard specifications to structural
steel work design.
Week Specific Learning Outcome Teachers Activities Resources
1.1 Apply with facility standard
specifications for structural steel
construction using America or British
Standards and their Nigerian counter-
parts.
• Demonstrate the application of
standard specifications for structural
steel construction. And give detailed
notes
• Lesson plan
• Chalkboard
• Charts.
1-2
1.2 Calculate weight of given structural
steel components using appropriate table
of specifications.
• Explain and calculate the weight of a
given structural steel components
using appropriate specifications
• Give the students problems to solve
• Lesson plan
• Chalkboard.
1.3 Draw diagrams to show the
applications of the following in structural
steel work:
a. tensile forces and
stresses
b. compressive forces
and stresses
c. shear forces and
stresses
• Sketch diagrams to show the
application of structural steel work
forces and stresses and ask the
students to do same.
• Lesson plan
• Chalkboard
• Charts
3
1.4 Calculate the reaction at the supports
of cantilever and simply supported
beams having points and uniform loading
e.g. simple shed frame with flat roof.
• Explain and calculate the reaction at
the support of cantilever and simple
supported beam having points and
uniform loading.
• Lesson plan
• Chalkboard, etc.
89
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: STRUCTURAL MECHANICS AND
SPECIFICATION
Course Code: CFW 22 Contact Hours: 15
per week - 4
tutorials; 11
practicals
Course Specification Theoretical/Practical contents
General Objective 1.0: Apply simple structural mechanics and standard specifications to structural
steel work design.
Week Specific Learning Outcome Teachers Activities Resources
1.5 Calculate bending moments and
moment of resistance of simply
supported beam with point and uniform
loading.
• Explain the calculation of bending
moments and moment of resistance of
simply supported with point and
uniform loading.
• Give the students problems to solve
• Lesson plan
• Chalkboard
• Charts.
1.6 Determine sizes of materials or
sections required for columns, rafters,
etc.
• Explain how to determine sizes of
materials required for columns, rafters,
etc.
• Lesson plan
• Chalkboard
• Charts
4
1.7 Sketch bending moment diagram for
cantilever with uniform load and calculate
the bending moment.
• Sketch and explain bending moment
diagram for cantilever with uniform load
and calculation on the bending
moment.
• Lesson plan
• Chalkboard
• Charts
1.8 Apply 1.4 in determining reaction at
support of actual frames. e.g.
b. canopy
c. riveted angle stiffered
for crane beams
• Demonstrate how to apply 1.4 in
determining reaction at support of
actual frames.
• Lesson plan
• Appropriate tools
and equipment.
1.9 Apply stress diagrams to determine
load on member of structural frames. e.g.
trusses.
• Explain how to apply stress diagrams
to determine load on member of
structural frames.
• Lesson plan
• Chalkboard
• Charts
• Appropriate tools
and equipment
5
1.10 Calculate bending stress due to web
or flange connections. E.g. floor beams
multistory frame building.
• Explain the calculation of bending
stress due to web or flange
connections
• Lesson plana
• Chalkboard
90
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: STRUCTURAL MECHANICS AND
SPECIFICATION
Course Code: CFW 22 Contact Hours: 15
per week - 4
tutorials; 11
practicals
Course Specification Theoretical/Practical contents
General Objective 1.0: Apply simple structural mechanics and standard specifications to structural
steel work design.
Week Specific Learning Outcome Teachers Activities Resources
6
1.11 Explain the purpose of the following
in structural steel assembly:
b. rag bolt
c. gusset plate
d. base plate
• Enumerate the purpose of the
following in structural steel assembly:
• rag bolt
• gusset plate
• base plate
• Lesson plan
• Chalkboard
• Posters
• Samples
1.12 Calculate the deflections on a
column or other members using standard
specifications/formulae.
• Solve some problems involving
calculations on deflections on a column
or other members using standard
specifications/formulae.
• Give the students problems to solve
• Lesson plan
• Chalkboard
• Charts.
General Objective 2.0: Interpret and produce structural steel working drawings
Week Specific Learning Outcome Teachers Activities Resources
2.1 Read and interpret working drawings
of structural steel work
• Explain how to read and interpret
working drawings of structural steel
work
• Lesson plan
• Chalkboard
• Relevant work
drawings.
2.2 Design and produce simple structural
drawings observing conventional
standards, symbols and notations.
• Demonstrate how to design and
produce simple structural drawings
observing conventional standards,
symbols and notations.
• Lesson plan
• Chalkboard
• Relevant work
drawings
2.3 Produce project applying simple
structural mechanics and standard
specification to structural steel work
• Ask student to produce project
applying simple structural mechanics
and standard specification to structural
steel work.
• Test and evaluate the students
-do-
Week 13 Examination - Practical 60%, Theory 40%
91
Structural Steel Work
PROGRAMME: Advanced National Technical Certificate In Fabrication And Welding Engineering Craft
MODULE: CFW 23-Structural Steel Work
DURATION: 15 Hours/week 4 Tutorial; 11 Practical
GOAL: The Module is designed to provide the trainee with further knowledge and skills to carry
out simple design, fabrication and erection of structural steel work
General Objectives:
1. Develop and Produce Templates for Structural Steel Work
2. Fabricate and Assemble various structural steel components for and products such as
roof trusses, stanchions, girders, slop-plating, bridges, tanks, etc.
3. Inspect finished structural steel work for defects and rectify the defects as necessary
Practical Competence
On completion of this module, the student will be able to:
1. Develop and produce template for structural steel work
2. Fabricate and assemble various structural steel component
3. carry out inspection on structural steel project
4. Rectify defects in structural steel project
5. provide and develop temperature for structural steel work
92
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: STRUCTURAL STEEL WORK Course Code: CFW 23 Contact Hours: 15 per
week - 4 Tutorials, 11
practicals
Course Specification Theoretical/Practical contents
General Objective 1.0 Develop and Produce Templates for Structural Steel Work
Week Specific Learning Outcome Teachers Activities Resources
1.1 Calculate areas of irregular surfaces
using the following rules:
a. mid-ordinates rule
b. Simpson's rule
• Solve problems involving
calculation on areas of irregular
surfaces using various methods
• Lesson plan
• Chalkboard
1.2 Develop given templates having:
a. regular surfaces
b. irregular surfaces
• Demonstrate how to develop
templates having:
• regular surfaces
• irregular surfaces
• Lesson plan
• Chalkboard.
• Drawing instruments
1.3 Cut out the developed templates
from the following materials:
a. wood
b. card-board
c. other suitable
materials
• show students how to how to
cut out developed templates from
various materials.
• Lesson plan
• Template materials
Relevant tools and
equipment. 4
1.4 Reproduce the cut templates in 1.3
above from structural steel materials
using the following workshop processes:
a. cutting - using oxy-
fuel gas, profile cutting
and power saw
b. punching - using
punching machine
c. chamfering - using
oxy-fuel gases
• Demonstrate how to reproduce
cut templates in 1.3 from
structural steel materials using
various workshop processes.
• Ask students to perform the
above functions
• Lesson plan
• Materials, Relevant
Tools and Equipment.
93
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: STRUCTURAL STEEL WORK Course Code: CFW 23 Contact Hours: 15 per
week - 4 Tutorials, 11
practicals
Course Specification Theoretical/Practical contents
General Objective 2.0: Fabricate and Assemble various structural steel components for and products
such as roof trusses, stanchions, girders, slop-plating, bridges, tanks, etc.
Week Specific Learning Outcome Teachers Activities Resources
2.1 Explain the functions of jigs and
fixtures in structural steel works
• State the functions of jigs and
fixtures in structural steel works.
• Give notes
• Lesson plan
• Chalkboard, Sample of
jigs and fixtures
2.2 Make simple jigs, fixtures and
manipulators for assembling structural
steel members.
• Demonstrate how to make
simple jigs, fixtures and
manipulators for assembling
structural steel members.
• Lesson plan
• Appropriate tools and
Equipment.
2.3 Assemble structural components
using the following jointing methods:
a. welding (arc and gas)
b. riveting
c. bolting
• Demonstrate how to assemble
structural components using
various jointing methods
• Students asked to perform the
above function
• Lesson plan Appropriate
Tools and Equipment and
Structural Components
2.4 Explain the purpose of metal
finishing e.g.
a) protection from the
weather and corrosion
b) decoration
• State the purpose of metal
finishing
• Lesson plan
• Chalkboard
2.5 Describe the composition of various
materials used for finishing structural
steel work
• Explain the composition of
various materials used for
finishing structural steel work
• Lesson plan
• Chalkboard
• Samples of materials for
finishing
5-7
2.6 Prepare the surfaces of structural
steel components for finishing using the
following techniques:
a. brushing - using wire
brush
b. de-greasing, using
suitable degreasing
agent
c. de-scaling
• Demonstrate how to prepare
the surfaces of structural steel
components for finishing using
various techniques
• Ask student to perform above
operations
• Lesson plan
• Samples of Structural
Components, Appropriate
tools and equipment
94
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: STRUCTURAL STEEL WORK Course Code: CFW 23 Contact Hours: 15 per
week - 4 Tutorials, 11
practicals
Course Specification Theoretical/Practical contents
General Objective 2.0: Fabricate and Assemble various structural steel components for and products
such as roof trusses, stanchions, girders, slop-plating, bridges, tanks, etc.
Week Specific Learning Outcome Teachers Activities Resources
2.7 Apply suitable undercoat to
structural steel components e.g. red
oxide by brushing or spray methods.
• Demonstrate how to apply
undercoat to structural steel
components
• Lesson plan
• Appropriate Tools and
Equipment 8
2.8 Store and maintain structural steel
materials and equipment
• Explain methods of storing and
maintaining structural steel
components
• Lesson plan
• Chalkboard
• Visit Relevant Stores.
General Objective 3.0: Inspect finished structural steel work for defects and rectify the defects as
necessary
Week Specific Learning Outcome Teachers Activities Resources
9-12
3.1 Identify common defects in structural
steel assembly e.g.
a. distortion
b. undercutting
c. lack of reinforcement
d. lack of penetration of
weld, etc. and state their
causes.
3.2 Carry out visual inspection to detect
defects on finished structural steel
assembly
3.3 Rectify defects in assembled
structural steel components
3.4 Produce and develop templates for
structural steel work
3.5 Fabricate and assemble various
structural steel component
• State common defects in
structural steel assembly as
listed in 3.1
• Show student sample of defects
• Give detailed notes
• Ask students to demonstrate
how to carry out visual inspection
to detect defects on finished
structural steel assembly
• Ask students to demonstrate
how to rectify defects in
assembled structural steel
components
• Give detailed notes
• Test and evaluate the students
• Lesson plan
• Chalkboard
• Any Relevant Materials
• Lesson plan
• Sample of defects
• Sample of finished weld
Components, Relevant
Tools and Equipment.
• Lesson plan
• Samples of
Components with weld
defects,
• Relevant Tools and
Equipment.
Week 13 Examination - Practical 60%, Theory 40%
95
Sheet metal work
PROGRAMME: Advanced National Technical Certificate In Fabrication And Welding Engineering Craft
MODULE: CFW 24-Sheet Metal Work
DURATION: 15 Hours/week 4 Tutorial; 11 Practical
GOAL: The Module is designed to upgrade the professional competence of operators who has
good knowledge of the use and application of sheet metal working equipment, materials,
processes, techniques and safety precautions
General Objectives:
1. Understand the Principles of Pantograph System and pattern forming attachment
2. Understand the construction of patterns and masters of irregular trinket box shapes using
pattern forming machine/attachment.
3. Understand the mechanical cutting of basic geometrical shapes
4. Understand the processes of planning and layout of engineering workshops/industry.
Practical Competence
On completion of this module, the student will be able to:
1. Apply machines for the production of sheet metals work
2. Design, Construct and decorate articles
3. Construct patterns of irregular shapes using pattern forming attachment
4. Participate in the planning and laying out engineering workshop/industry
96
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: SHEET METAL WORK Course Code: CFW 24 Contact Hours: 15 per
week-4 theory: Practical
11
Course Specification: Theoretical/Practical contents
General Objective 1.0: Understand the Principles of Pantograph System and pattern forming
attachment
Week Specific Learning Outcome Teachers Activities Resources
1.1 State the principles, functions and
the constructional details of pattern
forming machines and attachments
• Explain the principles, functions
and the constructional details of
pattern forming machines
• Lesson plan
• Chalkboard
• Posters/charts.
1.2 Explain the types and
characteristics of the machines in 1.1
above
• Explain the types and
characteristics of the machines in
1.1
• Lesson plan
• Chalkboard
• Posters 1-3
1.3 Apply the machines for the
production of sheet metal work
• Demonstrate how to apply the
machines for the production of
sheet metal work. Give note on
all of above
• Lesson plan
• Relevant tools and
equipment
General Objective 2.0: Understand the construction of patterns and masters of irregular trinket box
shapes using pattern forming machine/attachment.
Week Specific Learning Outcome Teachers Activities Resources
4-6
2.1 Explain the methods of box and
tray construction, using beadings and
joints.
• Sate the methods of box and
tray construction, using beadings
and joints. Give detailed note.
• Lesson plan
• Chalkboard
• Drawing instruments
2.2 Explain the making of articles such
as oblique tee with branch, lobster back
bend, and similar utensils which involve
the development of a pattern.
• Demonstrate how to produce
articles such as oblique tee with
branch, lobster back bend, and
similar utensils which involve the
development of a pattern.
• Lesson plan
• Chalkboard
• Drawing instruments
appropriate tools and
equipment
2.3 Design, construct and decorate
articles combing ornament with utility.
• Demonstrate how to design,
construct and decorate articles
combining ornament with utility.
• Relevant materials for
demonstration
97
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: SHEET METAL WORK Course Code: CFW 24 Contact Hours: 15 per
week-4 theory: Practical
11
Course Specification: Theoretical/Practical contents
General Objective 3.0: Understand the mechanical cutting of basic geometrical shapes
Week Specific Learning Outcome Teachers Activities Resources
a. 3.1 Review of sheet metal materials
and their preparation for industrial use
of the following metals: Tin, Lead, Zinc,
Copper, and Aluminium
• Explain and review non-ferrous
sheet metal material and their
preparation for industrial use.
Give detailed note
• Lesson plan
• Chalkboard
• Materials
3.2 State the composition of more
important brasses and bronzes, inconel
and monel; their properties and chief
uses, the composition and properties of
wrought aluminium alloys, magnesium
and titanium alloys in common use.
• Explain the composition of
more important alloy metals and
alloy elements; their properties
and uses.
• Lesson plan
• Chalkboard
• Samples of materials 7-8
3.3 Describe the process of
manufacture of mild steel sheets of
various tempers, the manufacture of
coated sheets such as tinned sheets,
templates and galvanized iron.
• Explain the process of
manufacture of coated sheet
metals, listed in 3.3. Give
detailed notes.
• Lesson plan
• Chalkboard
• Samples of materials
98
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: SHEET METAL WORK Course Code: CFW 24 Contact Hours: 15 per
week-4 theory: Practical
11
Course Specification: Theoretical/Practical contents
General Objective 3.0: Understand the mechanical cutting of basic geometrical shapes
Week Specific Learning Outcome Teachers Activities Resources
3.4 Develop and produce at least two
sheet metal projects involving the use
of more advanced machines and the
application of advanced pattern
development covered in fabrication
drawing.
Note: Some of the sheet metal project
should include:
a. trinket box of all
types
b. lobster back bend
c. oblique tee with
branch
d. small bait can
e. petrol or oil measure
f. oval container with
lid or with loose lid
g. oiled bottle
h. conical jug
i. scoop
j. funnel
k. ornamental bowls
and vases. Etc.
• Demonstrate how to develop
and produce sheet metal projects
involving the use of more
advanced machines.
• Give student project on the
above to produce some of the
items listed in 3.4
• Lesson plan
• Drawing instruments,
appropriate materials,
tools and equipment.
9
3.5 Explain the methods of producing
more difficult work in hollowing, raising
and planishing, hand flattening and
setting.
• State the methods of producing
more difficult beating sheet metal
work.
• Discuss and demonstrate
processes involved
• Lesson plan
• Chalkboard.
99
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING
ENGINEERING CRAFT PRACTICE
COURSE: SHEET METAL WORK Course Code: CFW 24 Contact Hours: 15 per
week-4 theory: Practical
11
Course Specification: Theoretical/Practical contents
General Objective 4.0: Understand the processes of planning and layout of engineering
workshops/industry.
Week Specific Learning Outcome Teachers Activities Resources
10-12
4.1 Demonstrate the methods of
planning and the layout of shops in
engineering workshops/factory
regulations.
4.2 Know the types of
workshops/industry, e.g. mechanical,
electrical, welding, carpentry, etc.
4.3 State the types and function of
sections in the workshops.
4.4 Describe and lay out plan for single,
batch and quantity production of
engineering components.
4.5 Arrange workshops according to
the lay out plans
4.6 Produce project involving pattern
forming machines
• State the methods of planning
and layout of shops in
engineering workshops/factory
regulations. Give detailed note
• Explain different types
workshops/industry. Give
detailed notes.
• Explain the types and function
of sections in the workshop.
• Explain lay out plan for single,
batch and quantity production of
engineering components.
• Explain how to arrange
workshops according to the lay
out plans
• Test and evaluate the students
• Take student on excursion to
industries
• Lesson plan
• Chalkboard, Charts visit
factory
• Lesson plan
• Visit
workshops/industries
• Lesson plan
• Visit
workshops/industries
• Lesson plan
• Chars
• Visit factory/industry.
• Lesson plan
• Charts.
• Lesson plan
• Material, tool and
equipment
Week 13 Examination - Practical 60%, Theory 40%
100
List of tools and equipment for welding and fabrication
engineering
S/NO MINIMUM
QUANTITY
REQUIRED
QUANTITY
AVAILABLE
ADDITIONAL
QUANTITY REQUIRED
1. Power guillotine of capacity
10swg x 36 in length
2
2. Treadle guillotine of capacity
20swg x 36 length
2
3. Swing beam folder 10swg x 3'-6'
capacity
2
4. Bending roller capacity 40"x2"
dia
2
5. Bending roller capacity 18"x11/4
dia
2
6. Bench mounted cone roller 5
7. Hand-operated copper capacity
3/32 in mild steel
5
8. Power bench grinding machine 2
9. Double-ended buffer and polisher 2
10. Universal beading and swaging
machine
2
11. Power-operated drilling machine
maximum capacity 3/8"
2
12. Wheeling machine 2
13. Fly Press 1
14. Hand nibbling Machine 2
15. Left and right hand snips 5 each
16. Straight snips 5
17. A "kit" of tools consisting of
hammer, mallet, steel rule,
scriber and wing compass, etc.
5
18. Bench shears 2
19. Power saw cutting machine
10mm
2
101
S/NO MINIMUM
QUANTITY
REQUIRED
QUANTITY
AVAILABLE
ADDITIONAL
QUANTITY REQUIRED
20. Disc cutting machine 2
21. Profile cutting machine with gas
cutting nozzles
2
22. Piller drilling machine 2
23. Louver shearing machine
(manual)
2
24. Overhead crane 1
25. Straightening machine 2
26. Cropping machine 2
27. Straight edge 10
28. Trammels dividers (set) 10
29. Hammers 10
30. Chisels 10
31. Punches 10
32. Try-squares 10
33. Steel rules 10
34. Smith open forge 2
35. Vee blocks 10
36. Electrode holders 10
37. Electrode drying oven 2
38. Heavy duty grinding machine 2
39. Bench-type grinding machine 2
40. CO2 cylinders 5
41. Transformers With rectifiers (with
all Instruments)
10
42. Aprons (assorted 20
43. Hand gloves 20
44. Hand shields and head caps 10
45. Wire brushes 10
46. Electrical beaters 2
47. Pliers – assorted 10
48 Gas welding goggles 5
102
S/NO MINIMUM QUANTITY REQUIRED
QUANTITY AVAILABLE
ADDITIONAL QUANTITY REQUIRED
49 Double cylinder trolley 2
50 Oxygen regulators 5
51 Acetylene regulators 5
52 Hoses and clips and all attachments set
53 Blowpipes (low and high pressure
5
54. Tongs 5
55. Combined set of cutting welding outfit
5
56. Power operated profile cutter with turntable
2
57. D.C generators with all connections
5
58. A.C transformer (Argon) with all the connections
5
59. Argon cylinders 5
60. Regulators with flow meters 5
61. Hacksaw and blades 24
62. Water to carbide generators 4
63. Carbide to water generators 4
64. Overhead projector 1
65. Computer set 1
66. ANVIL 2
67. Swage block 2
68. Chipping hammers 20
69. Plain goggles 20
70. First aid box 2
71. Sledge Hammer 2
72. G. Clamps - assorted 26
73. Self grip pliers - assorted 6
74. Magnetic clamp 3
75 Flatters 6
76 Molegrip 6
103
Guideline for textbooks development NATIONAL/ADVANCE TECHNICAL CERTIFICATE IN REFRIGERATION AND AIR CONDITIONING WORK
The following guidelines are suggestions from the Engineering Committees to the writers of the textbooks for
the new curricula. They are intended to supplement the detailed syllabuses which have been produced, and
which define the content and level of the courses.
Authors should bear in mind that the curriculum has been designed to give the students a broad
understanding of applications in industry and commerce, and this is reflected in the curriculum objectives.
• One book should be produced for each syllabus
• Page size should be A4
• The front size should be 12 points for normal text and 14 point where emphasis is needed.
• Line spacing should be set to 1.5 lines
• Headings and subheadings should be emboldened
• Photographs, diagrams and charts should used extensively throughout the book, and these
items must be up-to-date
• In all cases the material must be related to industry and commerce, using real life
examples wherever possible so that the book is not just a theory book. It must help the
students to see the subject in the context of the 'real word'
• The philosophy of the courses is one of an integrated approach to theory and practice, and
as such the books should reflect this by not making an artificial divide between theory and
practice.
• Examples should drawn from Nigeria wherever possible, so that the information is set in a
country text.
• Each chapter should end with student self-assessment questions (SAG) so that students
can check their own master of the subject.
• Accurate instructions should be given for any practical work having first conducted the
practical to check that the instructions do indeed work.
104
• The books must have a proper index or table of contents, a list of references and an
introduction based on the overall course philosophy an aims of the syllabus.
• Symbols and units must be listed and a unified approach used throughout the book.
• In case of queries regarding the contents o the books and the depth of information, the
author must contact the relevant curriculum committee via the National Board for Technical
Education.
The final draft version of the books should be submitted to Nigerian members of the curriculum working
groups for their comments regarding the content in relation to the desired syllabus.
105
Recommended books for fabrication and welding
engineering craft practice
S/NO BOOKS AUTHORS
1. BASIC WELDING AND FABRICATION W. KENYON
2. BASIC ENGINEERING CRAFT STUDENTS: FABRICATION AND
WELDING 05
BOURBOUSSON &
ASHWORTH
3. THE TECHNOLOGY OF SHEET METAL WORK FOR STUDENTS
AND CRAFTSMEN
A. DICKSON
4. THE GEOMETRY OF SHEET METAL WORK FOR STUDENTS AND
CRAFTSMEN
A. DICKSON
5. THE CALCULATION OF SHEET METAL WORK FOR STUDENTS
AND CRAFTSMEN
A. DICKSON
6. METAL: DESIGN AND CONSTRUCTION A.C. DAVIS - Tenth Edition
7. (a) THE SCIENCE AND PRACTICE OF WELDING Vol. I Cambridge
V. Press, 1992
A. C. DAVIS
(b) Volume II above
8. WELDING SCIENCE AND METALLURGY J. CARDENER
9. WELDING TECHNOLOGY KOENISBERGE
10. FABRICATION AND WELDING TECHNOLOGY A. SMITH
11. BASIC WELDING - Macmillian Publisher Ltd London, 1986 P. SOMSKY
12. WELDING CRAFT PRACTICE - Part 1 Volume I Oxy-acetylene Gas
Welding and Related Studies
N. PARKIN & C.R. FLOOD
13. WELDING CRAFT PRACTICE - Part 1. Volume 2: Electrical Arc
Welding and Related Studies
N. PARKIN & C.R. FLOOD
106
List of Participants UNESCO-NIGERIA PROJECT IN SUPPORT OF REVITALIUSATION OF TECHNICAL AND VOCATIONAL
EDUCATION(TVE) IN NIGERIA
PROJECT TEAM MEMBERS
S/No. NAME DESIGNATION
1 Engr. Dr. Nuru A. Yakubu National Project Coordinator & Executive Secretary, NBTE
2 Dr. M.S. Abubakar Technical Coordinator
3 Engr. S.C. Odumah Curriculum Development Coordinator
4 Mr. B.N. Niriyus Staff Development Coordinator
5 Engr. Dr. S.N. Mumah Information & Communication Technology Coordinator
6 Isa Alhaji Sulaimanu Project Accountant
7 Engr. A.D.K. Muhammad Project Officer
S/No Name Address
1. Omotorsho Isaac
Bamidele
Ondo State Board for Tech. & Voc. Education or P.O. Box 975, Akure.
2. Y.A. Alimi Government Technical College P.M.B.5377, Ado-Ekiti
3. G.G. Idris Government Technical College K/Namoda Zamfara State
4. J.I. Ortserga Dept. of Voc. & Tech. Faculty of Education Benue State University, Makurdi
5. F.M. Alega Fest Development Department, National Business & Technical Exams Board
(NABTEB) P.M.B. 1747, Benin City, Edo State.
6. Olubode Daniel
Majiyagbe
National Board for Technical Education Kaduna