High strength bolting assemblies torsion test bench
1. main loading frame
1.1 functions: high strength bolting assemblies torsion test bench is main suitable for test the nut proof and breaking load, torque breaking for high strength bolts with large hexagon head for steel structures, and for test the fastening axial force, torque coefficient of nut, bearing surface friction torque, coefficient of friction between threads and coefficient of total friction of torshear type high strength bolt hexagon nut. If equipped with relative test grips, it can also complete mechanical test of metal rod, gear ,shaft, etc.
1.2 functions
Suitable for mechanical property test and research for fastener and assemblies such as bolts, nuts and stud with grade of 12.9,10.9,9.8 and 8.8.
This machine can measure and determine following parameters: clamp force F, tightening torque T, thread torque Tth, bearing surface friction torque Tb,rotation angle θ,torque coefficient K,coefficient of total friction μtot,coefficient of friction between threads μth,coefficient of friction between bearing surfaces, yield clamp force Fy,ultimate clamp force Fu,ultimate tightening torque Tu,etc.
1.3 test method
GB/T 1231, GB/T3632, GB/T16823.3,ISO 16047,DIN2510/5,DIN2510/6, ASME/ASNIB18.2.2, BS EN 14399-2, ISO 16047
2.main specifications
No. | Item | Spec. |
1 | Max. torque | 5000Nm |
2 | Max force | 1000KN |
3 | Measuring range of torque | 50-5000Nm |
4 | Measuring range of force | 10-1000KN |
5 | Relative error of torque and force value | Less than ±1% |
6 | Resolution of torque | 1/200000 |
7 | Resolution of force | 1/300000 |
8 | Precision of rotation angle | 0.1° |
9 | Loading speed | 0.1-10r/min |
10 | Length of test sample【d: nominal diameter of bolt,mm】 | ≥4d |
11 | Coaxiality error of grips | ≤Φ0.2mm |
12 | Bolts to be tested | M12,M14,M16,M18,M20,M22,M24,M27,M30,M36 |
13 | Control mode | Force control,torque control, angle control |
14 | Power of main motor | 7.5KW |
15 | Dimension | Around 2100x900x1100mm |
16 | Weight | Around 1500kg |
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