LNW-20000/30000 microcomputer controlled high-strength bolt tension and torsion testing machine_Bolt and nut fastener testing machine_详情

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, 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 large host rigidity, stable and reliable performance, uniform loading and no impact, accurate data acquisition and control, accurate experimental data, and automation Features such as high degree 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 full 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 the torsion test of the high-strength bolt connection pair, automatically measuring the 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. To replace the test aids, it can also be used for static torsion-pulling of transmission 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 Bolts and Fasteners"

9. G B/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 : 2 0000N.m , 30000Nm ;

2. The maximum axial force: 20 is 00kN , 3000kN ;

3. Torque measuring range: 2%-100%, namely: 4 00- 2 0000N.m , 600-30000Nm ;