WTT Series Metal Wire Torsion Tester Application: WTT Series Metal Wire Torsion Tester is mainly used to test the plasticity of metal wires and ropes under torsion condition. Surface flaws of steel wires may be shown during the testing process. It is most suitable for quality inspection of departments related to steel wire. The revolution is displayed on a 4-digit LED. Max. displayed revolution is 999.9. The revolution value is automatically held at the break of specimens. It conforms to standards of ASTM A938, ISO7800. Specifications: Model WTT-1 WTT-3 WTT-6 WTT-10 Diameter of specimen (mm) 0.1-1 0.1-3 0.1-6 0.1-10 Distance between the grips (mm) 350 500 O.D. of the gripping body (mm) 74 65 Flat grips (mm) 0-3 0-3 Round grips 1 (mm) 3-6 3-6 Round grips 2 (mm) 6-10 6-10 Torsion speed (r/mm) 60/90/120/180/300 30/60/90/120 Torsion speed error (%) <±10 Min. reading of torsion angle 0.1 Coaxiality of grips (mm) <φ0.4 Parallelism of moving rail (mm) <0.2 Hardness of grips 50-65HRC Weights error (%) ±0.5 Working noise (db) <70 AC 380V±10% 50HZ
NJS series Auto Digital Display Torsion Testing Machine Applications & Features: NJS series is designed and built for torsion test on metal & non-metal materials, as well as parts & components. It is an essential instrument to inspect torsion properties of materials in mechanics laboratories of aviation industry, construction industry, scientific research department, universities & industrial enterprises. The testing machine adopts AC servo system & is loaded through the rotation of the active cartridge driven by the AC servo motor and cyclonical pinwheel reducer motor. The torque and torsion angle are measured with high-precision torque transducer & photoelectric encoder. Automatic operation with only one key touch to finish the test; LCD monitors to show the test in real time. Micro-printer prints the test result. Main Specifications: Items Max. test torque ( N.m) Specifications 50/100/150/200 N.m Relative error of torque display ±1.0% Range of test speed( /min) 0.36-360 Max. reading of torsion angle( ) 9999.9 Resolution of reading of torsion angle( ) 0.01 Relative error of torsion angle indications ± 1.0% Test space (mm) 300-500 Noise Overall Dimension(mm) AC 220 V ± 10%, 50Hz 65dB 970x330x540 Weight(kg) 400
NJS-M Series Manual Digital Display Torsion Testing Machine Applications & features: NJS-M series is used for the torsion test for all kinds of materials, by imposing a torque by manual. There are two testing methods: Automatic testing: Turn the hand wheel until the test rod breaks. The testing machine will automatically test the yield torque M1 and the maximum torque M2. Manual testing: choose the test angles and torques of any 9 points during the testing period and record them. Able to retrieve or print latest testing results after the test. It is mainly suitable for materials labs of scientific research dept., colleges or universities and industrial enterprises to test the mechanical properties of materials under torsion condition. Main Specifications: Items Specifications Max. test torque (N.m) 50/100/150/200 N.m Min. reading of torque (N.m) 0.1 Max. reading of torsion angle( ) 9999.9 Min. reading of torsion angle ( ) 0.1 Relative error of torque indications ±1.0% Relative repeatability error of torque indications 1.0% Diameter of specimen (mm) 10 Max. testing space (mm) 260 AC 220V ± 10%, 50Hz
NDW Series Computer Controlled Torsion Testing Machine Application: NDW Series Computer Controlled Torsion Testing Machine provides loading and weighing capabilities in both directions of rotation, which makes it possible to conveniently determine not only the ultimate torque of a specimen, but also how the specimen behaves under conditions of continuous or intermittent torque loading in both directions. Computer will dynamically display the torsion curve, loading speed, peak value, and so on. It is mainly used for the torsion test of metal and non-metal materials, as well as the torsion test for parts and components. It is an essential instrument to measure torsion properties of materials for mechanics laboratories of aviation industry, construction industry, scientific research dept, universities and industrial enterprises etc. Features Adopting PC-controlled Japanese AC servo system, it is loaded through the active clamping head driven by the AC servo motor and cycloidal pinwheel reduction motor. High-precision symmetrical torque transducer to measure test torque and high-precision LEC model photoelectric encoder to measure torsion angle. Double control modes: manual control and computer control. WINDOWS-based supervision software used to calculate mechanical indexes of materials. Automatic test data processing, dynamic display of test curves, storage and print out of test results. Operator can intervene the analysis process to improve the analysis accuracy. The computer can dynamically display the torsion curve, loading speed, peak value etc. Applied Standards: It confirms to standards of ASTM A938,ISO 7800:2003, GB/T239-1998, GB10128 and others equivalent. Specifications: Model NDW-200 NDW-500 NDW-1000 NDW-2000 NDW-3000 Capacity (N.m) 200 500 1000 2000 3000 Measuring range of torque (N.m) 4-200 10-500 20-1000 40-2000 60-3000 Distance between the grips (mm) 0-500 4--1000 4-1200 Relative error of torque indication (%) 1.0(from 20% of each full range) Relative repeatability error of torque (%) 1.0 (from 20% of each full range) Control method Close-loop control of torque, torsion angle and deformation Curves Torque/Angle/Deformation-Time curve Torque-Angle/Deformation curve Resolution of torsion angle ( ) 0.1 Torsion speed( /min) 0.12~720 /min,stepless Max. reading of torsion angle( ) 9999.9
Software Introduction: Microsoft Windows operation platform, screen display, mouse action The test torque and peak value display from 4 to 6 measuring ranges, torsion angle display in four measuring ranges, automatic calibration. Recording torque-torsional angle, torque-time, torsional angle-time & corner-time trend simultaneously, and can switch over for observation at runtime. Data is processed in man-machine interaction mode, meets the requirements of the standard 'Torsion Test Method of Metallic Materials Under Room Temperature'. Data processing can be realized automatically, also interfered in manual mode to boost the accuracy. Test data is stored by the form of ASCII code into.txt file, so convenient for customers to reprocess test data utilizing any form of commercial statements and word processing software, printing test reports as the format customer request. System supports Open Loop control mode and Entire Close Loop (as Torque, Torsional Angle and Encoder Angle) control represents the high control level of testing machine. System provides customer with secondary programming function which means control easier, process more flexible, which adapts to many actual testing requirements. System supports any commercial printers, customer can customize printing contents by himself. Factory parameters are stored into files, easy to restore. Simple and reliable upgrade of system Some software interfaces are as follows: