70 344 TESTING MACHINES Introduction The new technology utilised in this series of testing machines is based on the use of PC applications, which allow a totally new concept in steel testing. Gone are the old control con- soles full of knobs and switches. Thanks to the use of the latest technology this new series provides both perfect closed loop hydraulic control and ergonomic operator usage. All the control fun- ctions are now managed from a stan- dard keyboard and mouse. Our frames differ substantially from the old tradi- tional models because of the originality of their design, new solutions employed and their extremely simple operation. The sophisticated software consists of a very complete suite of programs, not only for tension tests, but also flexure bending and compression on steel, and flexure and compression tests on con- crete specimens, in compliance with the new EN specifications. Other accessori- es are available to test steel strands and electrowelded steel screen. - Strain gauge load cell incorporated in the piston. Providing accurate load measurement - Rapid vertical displacement of mobile frame by remote control - All operations and the hydraulic gripping system controlled by remote control - Simple adjustment of the vertical daylight - Three sets of grippers to test round rebars up to 40 mm dia. and flats up to 70x35 mm - Front loading of specimens for easy access - Fully automatic test sequence com- prising load and stroke control by PC - Automatic output of test results - Display of stress/strain diagram in real time - Printout of stress/strain diagram and test results 70-C0807/C 600 kN capacity in tension 200 kN capacity in compression. The PC cabinet on the right is not part of the machine. See accessories on page 338. q STANDARD EN ISO 6892, 7500-1, ASTM A370 GENERAL DESCRIPTION AND SPECIFICATIONS Machine frame, piston/cylinder assembly, electronic load cell - Steel base with rigid steel frame housing the lower grippers. - Piston/cylinder assembly mounted on the top of the rigid frame. The piston incorporates the electronic load cell. - Mobile frame consisting of four high tensile strength columns, upper cros- shead directly connected to the piston, intermediate crosshead with compres- sion platen and lower crosshead housing the upper grippers. - The 70-C0807/C model has a 400 mm vertical daylight adjustable in steps of 50 mm. - Hydraulically operated opening and ver- tical adjustment of grippers by two inde- pendent auxiliary cylinders controlled by the push button panel. This unique fea- ture makes the machine extremely easy to operate enabling one man to perform the test in a very short time. - Crosshead displacements controlled by the use of a bi-directional encoder. Grippers - Three sets of standard grippers supplied with the machine to perform tensile tests on rounds and flats. - Two sets of grip liners supplied with the machine to provide maximum bearing and holding surface for specimens of all sizes. Safety features - Pressure switch, which automatically stops the machine when the oil pressure goes over the maximum permitted level. - Max. travel limit switch to stop the mobile frame at its upper position. - Software safety feature, which stops the machine when the maximum load is reached. Control console The lower section houses the hydraulic assembly, which comprises: - Hydraulic pump - Proportional valve - Hydraulic valves - Heat exchanger to control the oil tempe- rature - Oil tank. Hardware The upper section houses the hardware consisting of an electronic card for the control of all functions of the machine having the following specification: - A/D converter resolution 1/20000 - No. 4 outputs for electrovalves - Analogical output for load and strain control: 12 bit - Load cell input Software The machine can be used either in the manual or in the automatic mode to per- form the following tests: - Tensile test on steel and steel reinfor- cing bars: Standards EN ISO 6892 and ASTM A370 - Tensile tests in general, flexural (transverse) and bending tests on steel: Standards UNI 559, 564 - ASTM E290 Testing equipment for the construction industry Universal testers. Steel mechanical testing . . . . . . . . . . Computer controlled universal testing machines STEEL
Transcript
70
344
TESTING MACHINES
Introduction The new technology utilised in this series of testing machines is based on the use of PC applications, which allow a totally new concept in steel testing. Gone are the old control con-soles full of knobs and switches. Thanks to the use of the latest technology this new series provides both perfect closed loop hydraulic control and ergonomic operator usage. All the control fun-ctions are now managed from a stan-dard keyboard and mouse. Our frames differ substantially from the old tradi-tional models because of the originality of their design, new solutions employed and their extremely simple operation. The sophisticated software consists of a very complete suite of programs, not only for tension tests, but also flexure bending and compression on steel, and flexure and compression tests on con-crete specimens, in compliance with the new EN specifications. Other accessori-es are available to test steel strands and electrowelded steel screen.
- Strain gauge load cell incorporated
in the piston. Providing accurate load
measurement
- Rapid vertical displacement of mobile
frame by remote control
- All operations and the hydraulic
gripping system controlled by remote
control
- Simple adjustment of the vertical
daylight
- Three sets of grippers to test round
rebars up to 40 mm dia. and flats up
to 70x35 mm
- Front loading of specimens for easy
access
- Fully automatic test sequence com-
prising load and stroke control by PC
- Automatic output of test results
- Display of stress/strain diagram in
real time
- Printout of stress/strain diagram and
test results
70-C0807/C 600 kN capacity in tension200 kN capacity in compression.The PC cabinet on the right is not part of the machine.See accessories on page 338.
q STANDARD
EN ISO 6892, 7500-1, ASTM A370
GENERAL DESCRIPTION
AND SPECIFICATIONS
Machine frame, piston/cylinder
assembly, electronic load cell
- Steel base with rigid steel frame housing the lower grippers.
- Piston/cylinder assembly mounted on the top of the rigid frame. The piston incorporates the electronic load cell.
- Mobile frame consisting of four high tensile strength columns, upper cros-shead directly connected to the piston, intermediate crosshead with compres-sion platen and lower crosshead housing the upper grippers.
- The 70-C0807/C model has a 400 mm vertical daylight adjustable in steps of 50 mm.
- Hydraulically operated opening and ver-tical adjustment of grippers by two inde-pendent auxiliary cylinders controlled by
the push button panel. This unique fea-ture makes the machine extremely easy to operate enabling one man to perform the test in a very short time.
- Crosshead displacements controlled by the use of a bi-directional encoder.
Grippers
- Three sets of standard grippers supplied with the machine to perform tensile tests on rounds and flats.
- Two sets of grip liners supplied with the machine to provide maximum bearing and holding surface for specimens of all sizes.
Safety features
- Pressure switch, which automatically stops the machine when the oil pressure goes over the maximum permitted level.
- Max. travel limit switch to stop the mobile frame at its upper position.
- Software safety feature, which stops the machine when the maximum load is reached.
Control console
The lower section houses the hydraulic assembly, which comprises:- Hydraulic pump- Proportional valve- Hydraulic valves- Heat exchanger to control the oil tempe-
rature- Oil tank.
Hardware
The upper section houses the hardware consisting of an electronic card for the control of all functions of the machine having the following specification:- A/D converter resolution 1/20000- No. 4 outputs for electrovalves- Analogical output for load and strain
control: 12 bit- Load cell input
Software
The machine can be used either in the manual or in the automatic mode to per-form the following tests:- Tensile test on steel and steel reinfor-
cing bars: Standards EN ISO 6892 and ASTM A370
- Tensile tests in general, flexural (transverse) and bending tests on steel: Standards UNI 559, 564 - ASTM E290
- Flexural test on concrete beams: Standard EN 12390-5
- Compression test on concrete speci-mens: Standards EN 12390-3.
Once the specimen has been placed in the machine (using accessories if required) and the specimen data introduced, the test is run completely automatically at the press of a button up to the printout of the test certificate and the storage of the test data.
PC and printer
The machine is supplied complete with PC and colour graphic printer.
Standard outfit
The machines are supplied complete with:- No. 3 set of grips for round specimens up
to 40 mm dia. and flat specimens up to 70 mm wide and 35 mm thick. Complete with two sets of grip liners
- No. 1 set of foundation bolts- No. 1 service spanner- No. 1 instruction manual
This PC cabinet is a purpose built accessory for use in many laboratory applications, where a PC is required in a testing environ-ment. It is designed to provide PC system protection from airborne contamination such as cement dust. Filtration is achieved by two vented filters into the cabinet. The monitor can be fitted on top of the cabinet and three extractable shelves holds keybo-ards, printer and mouse.
B Overall dimensions: 500x550x915 mm (lxdxh)
A Weight approx.: 55 kg
s70-C0807/10 Flat gripper for flat specimen up to 70x35 mm and round specimens from 5 to 9 mm dia. Four pieces are required per set
s70-C0807/12 Vee gripper for round specimens from 9 to 19 mm dia. Four pieces are required per set
s70-C0807/14 Vee gripper for round specimens from 19 to 40 mm dia. Four pieces are required per set
s70-C0807/16 Grip liner 9 mm thick. Four pieces are required per set
s70-C0807/18 Grip liner 14 mm thick. Four pieces are required per set
N O T E The software includes the automatic pro-cessing of all the test parameters, as per EN ISO 6892. Amongst which we recall the determination of the proof strength failure load and stress Fm, Rm (non pro-portional extension) Rp, Rpo, 2, the modulus of elasticity E, the upper yield strength ReH, the lower yield strength ReL , Rt proof strength total extension and the related percentage elongations. With the program it is possible to zoom the stress/strain dia-gram in any position.
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Transverse test - Models 70-C0807/2 70-C0820/2 for machine model 70-C0807/C 70-C0820/C
The apparatus consists of a lower beam with two mobile bearers and one upper bearer 50 mm dia. The upper bearer is also available with 20, 30, 40, and 60 mm dia. (See accessori-es).
70-C0807/2 Transverse test
70-C0820/2
70-C0807/31 Bending test 70-C0820/31
Models 70-C0807/1 70-C0901/5 for machine model 70-C0807/C 70-C0820/C
150x150x600/700 mmSuitable for both 70-C0807/C and 70-C0820/C models. For more information see section 50.
A Weight approx.: 33 kg
70-C0961 SERIES
COAXIAL EXTENSOMETER FOR TENSILE
STRENGTH TESTING. (PATENT PENDING)
Introduction
Extensometers used for measuring the extension of specimens in traction, particu-larly in the case of steel or brittle materials, are only able to detect strain during the first stage of the test, or rather, while the brittle materials conserve their elasticity as they have to be disconnected before failu-re. This simple and economic system, the result of our experience in this field, fully satisfies these requirements because:- it is applied directly to the specimen- it remains connected until breakage- it measures extension with high pre-
cision of both the elastic and plastic stage and with the appropriate simple adjustments, it is connectable to almost all testing machines
- it avoids markings on the test pieces.
General description and specifications
The extensometer is basically made from three separate tubular sections, joined telescopically to one another. The middle section, delimited by the larger diameter, determines the measuring base, which, as
is well known, must be 5 times the diame-ter of the specimen (in the case of breaking point measurements). The two end sections consist of two mechanisms for gripping the specimen. One carries the electrical exten-someter, the other an anvil.
Measuring range dia. mm (min./max.) 5/11.5 11/18 17.5/26 25/36Spacers(2) for specimens dia. (mm) 5-6-8-10 12-14-16-18 18-20-22-25 25-28-30-32Measuring base (1) 5 x d 5 x d 5 x d 5 x dTransducer stroke (mm) 30 50 50 100Size (mm)a) 130 150 160 220 b) 55 65 70 80 c) 55 60 65 75
Weight approx. (g) from 100 to 500
(1) d = specimen diameter(2) Spacers for other specimen dia. are available on order
Cut away view of 70-C0961/B1 extensometer during operation
70-C0901/32, 70-C0901/31
STEEL SCREEN AND STEEL STRANDS
� 70-C0901/20
Gripper for electrowelded steel
screen Used with the standard grips for flat spe-cimens 70-C0807/10 supplied with the universal tester.
This simple and useful machine is actua-ted by rotating the handle. The carriage holding the specimen moves laterally by 5 or 10 mm steps and the tool marks off the specimen at the desired interval. The machine can receive specimens up to 50 mm dia. and 400 mm long.
B Overall dimensions: 600x300x360 mm approx.
A Weight approx.: 40 kg
70-C0980
� 70-C0954/C
Electronic universal extensometer
to measure the elongation of wires,
steel rebars and round steel speci-
mens
Measuring base: 50 to 200 mm
Linearity: better than ± 1%
Max. travel: 10 mm
The extensometer must be removed before the specimen failure.
� 70-C0974
Cut-off machine. 230 V, 50 Hz, 1 ph.
General description and specifications
Used to cut the steel specimens to a sui-table length for tensile testing. The cutting blade is not part of the machine and has to be ordered separately. (See 70-C0979/1)
Power: 750 W
Max. blade diameter: 225 mm
B Dimensions: 660x570x600 mm
A Weight approx.: 32 kg
70-C0974
N O T E Multiple marking off machines either manual or motor operated are available on request.
