1. Product overview

1. Microcomputer controlled high-strength bolt tension and torsion testing machine is also called high-strength bolt axial torque (torque) testing machine, or high-strength bolt connection pair torsion coefficient testing machine, which adopts horizontal structure and consists of loading system, transmission system, and digital data collection Processing system and computer measurement control display system, etc., detect torque and axial force, can detect bolt torque, maximum torque, yield torque, yield tightening torque, axial force, limit axial force Fbimax, yield tightening axial force , Torsion angle, torque coefficient K, etc., with automatic or manual loading and unloading functions, uniform loading, stable, no impact, suitable for high-strength bolts, large hexagon head bolts, torsion shear bolts, steel structure bolts, wind power Various bolts such as bolts, bolts, nuts, and connection sets are tested for the performance of torsion-tension mechanics, and there are test curves such as torque-axial force-torsion angle, torque/axial force-time, etc.

2. The main machine adopts a horizontal structure to ensure the rigidity of the whole machine. The fixture adopts 40CrNiMoA quenching (HRC50～55) method, and the main drive shaft adopts alloy structural steel quenching treatment to ensure its service life. It has high rigidity of the host, stable and reliable performance, uniform loading and no impact, accurate data acquisition and control, accurate experimental data, and automation High and long service life. Different fixtures can be replaced according to different test pieces. The installation and disassembly of the test piece is convenient and fast. The computer controls the whole process of preloading, loading, unloading and resetting.

3. Computer screen display, digital data acquisition control system and all digital AC servo system form a closed loop control. It is driven by a precision reducer, which has the characteristics of uniform loading, stable, no impact, and accurate data acquisition and control. It adopts digital AC servo control system, reducer, digital data acquisition and processing system, and photoelectric encoder to collect the torsion angle of the sample.

4. It can be used for torsion test of high-strength bolt connection, and can automatically measure thread torque, bearing surface torque, yield tightening torque, pre-tightening force, ultimate tightening force and torque, torque coefficient, tightening angle and other bolts and studs Mechanical properties such as clamping load and effective torque.

5. Replacement of test aids, which can also be used for static torsion-pulling of drive shafts, half shafts, torsion bars, couplings, anchor rods, drill rods, bimetallic parts, joints, metal-nonmetallic assemblies, etc. Performance test of elongation. It is an ideal testing equipment for quality supervision, scientific research institutes, wind power photovoltaics, factories and mining enterprises, engineering machinery, colleges and universities, power towers, steel structures, petrochemicals, aerospace, highway transportation, bridges and dams.

2. Applicable standards

1. GB/T2611-2007 "General Technical Requirements for Testing Machines"

2. GB/T10128－2007 "Metallic materials room temperature torsion test method"

3. JB/T9370—2007 "Technical Conditions for Torsion Testing Machines"

4. GB/T16823.3-2010 "Tightening test method for threaded fasteners"

5. GB/T1231-2006 "Technical conditions for high-strength large hexagon head bolts, large hexagon nuts and washers for steel structures"

6. GB/T3632-2008 "Torsion shear type high strength bolt connection pair for steel structure"

7. GB/T16823.3-2010 "Fastener Torque-Clamping Force Test"

8. GB/T16823.2—1997 "General Rules for Fastening of Bolts and Fasteners"

9. GB/T16823.2—1997 "Method for Fastening Bolts and Fasteners"

10. GB/T3098.9-1993 "Effective Torque Steel Hexagon Lock Nuts for Mechanical Properties of Fasteners"

11. GB/T3633-1995 "Technical conditions for torsion shear type high-strength bolt connection pair for steel structure"

12. BS EN14399-2:2005《High-strength structural bolting assemblies for preloading—Part 2: Suitability test for preloading》

13. The user can also provide related technical standards, such as ISO, ASTM, EN, DIN, JIS, and realize the control of the test method and related data collection and processing according to the standards provided by the user.

3. Main specifications

1. Maximum torque: 10000N.m;

2. Maximum axial force: 1500kN;

3. Torque measurement range: 2%-100%, namely: 200-10000N.m;

4. Axial force measurement range: 2%-100%, namely: 30-1500kN;

5. Relative error of torque measurement: ±1%;

6. Relative error of axial force measurement: ±1%;

7. Torque resolution: better than ±1/300000 yards, the whole process is not divided, and the resolution is unchanged;

8. Axial force resolution: better than ±1/300000 yards, the whole process is not divided, and the resolution is unchanged;

9. Measuring range of torsion angle: 0-infinite;

10. Accuracy of torsion angle: ≤0.1°;

11. Relative error of torsion angle measurement: ±1%;

12. Torsion speed: 0-720°/min, stepless speed regulation;

13. Clamping sample size: M27－M42

14. Distance between chucks: 60-500mm;

15. Power supply voltage: three-phase 380V, 50Hz

16. Host weight: about 2000kg