1. Product overview

1. LNZ-W series microcomputer controlled high-strength bolt torque axial force testing machine, also known as high-strength bolt detector or bolt tension-torsion testing machine , adopts a horizontal structure and is measured by a loading system, a transmission system, a digital data acquisition and processing system, and a computer Control and display system and other components , 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 type bolts, steel structure bolts, wind power bolts, bolts and nuts, Various bolts such as connection sets aretested for the performance of torsion-tension mechanics, and there are test curves such as torque-axial force-torsion angle, torque/axial force-time, etc. Replacement of test aids can also be used for static torsion-tensile mechanics such as drive shafts, half shafts, torsion bars, couplings, anchor rods, drill rods, bimetallic parts, joints, metal-nonmetallic assemblies, etc. Performance testing .

2. It  has the characteristics of large host rigidity, stable and reliable performance, uniform loading and no impact, accurate data acquisition and control, accurate experimental data, high degree of automation, and long service life. The whole process of preloading, loading, unloading, resetting, etc. is controlled by the computer. It is used for quality supervision, scientific research institutes, wind power photovoltaics, factories and mining enterprises, construction machinery, colleges and universities, power towers, steel structures,petrochemicals, aerospace, and highway transportation. , Ideal testing equipment for bridges, dams and other industries.

2. Applicable standards of LNZ-W series microcomputer controlled high-strength bolt torque axial force testing machine

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

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

3. Main technical indicators of LNZ-W series microcomputer controlled high-strength bolt torque axial force testing machine