3http://www.unified-eng.com/scitech/weld/weld.html
TYPES OF WELDS AND THEIR SYMBOLS
Square groove
V groove
Bevel groove
U groove
J groove
Flare v groove
Flare bevel groove
5http://www.unified-eng.com/scitech/weld/weld.html
Fillet weld
FILLET WELD
6http://www.unified-eng.com/scitech/weld/weld.html
SQUARE GROOVE WELD
7http://www.unified-eng.com/scitech/weld/weld.html
V groove
V GROOVE WELD
8http://www.unified-eng.com/scitech/weld/weld.html
Bevel groove
BEVEL GROOVE WELD
9http://www.unified-eng.com/scitech/weld/weld.html
U groove
U GROOVE WELD
10http://www.unified-eng.com/scitech/weld/weld.html
J groove
J GROOVE WELD
11http://www.unified-eng.com/scitech/weld/weld.html
Flare v groove
FLARE V GROOVE WELD
12http://www.unified-eng.com/scitech/weld/weld.html
Flare bevel groove
FLARE BEVEL GROOVE WELD
13
PLUG AND SLOTS WELDS
14
For same strength, longer leg size cost more. Use smaller lag size with longer length.
DON’T DO
15
Use symmetric sections for automatic welding
DON’T DO
16
Design simple to save welding cost
DON’T DO
17
Use minimum amount of weld metal
DON’T DO
18
Design for easy accessibility to welding
19
Arrange the welding layout which reduces welding cost
23
C C
C
Better Worse
Improved design
25
Better Worse
Improved design
26
Better Worse
Improved design
27
Better Worse
Improved design
36
Risk Priority Number
RPN = R occurrence x R severity x R detection
RPN = 1 failure is highly unlikely and
unimportant
RPN = 30 it is OK
RPN = 100 failure will occur
RPN = 1000 hazardous and harmful failure
will occur
FMEA OF WELDMENTS
44
01 bad 02 better 03 better 04 best
joint01.sldasm
45
u plate and shaft.SLDASM
47
\wledments\plate02.sldprt
48
\wledments\TRUSS.sldprt
49
\wledments\ROPS.sldprt
50
\weldments\arcframe_mod01.sldprt
51
\weldments\arcframe_mod01.sldprt
52
\weldments 03\window01.sldprt
53
\weldments 03\window02.sldprt
54tube and lug.sldasm
55
tube 02.sldprt
Configurations 03, 04
60
Terminology differs depending on standard
62Plug weld which is called filet weld in SW