1. Functional use of torsion testing machine     NDW series torsion testing machine is suitable for testing the torsion performance of metal materials, non-metal materials and composite materials. The test and data can be provided according to the national standard GB/T10128-2007 "Metallic Material Room Temperature Torsion Test Method".It can also be used to test the torsion performance of torsion rods, anchor rods, drill rods, various shafts, rods and other parts by replacing the test aids. It is suitable for mechanics laboratories such as metrology and quality inspection, iron and steel metallurgy, machinery manufacturing, civil aviation, colleges and universities, scientific research institutes, construction materials, petrochemicals, etc. 2. Main features of torsion testing machine

1. The  motor is loaded, the high-precision torque sensor detects the torque, the photoelectric encoder detects the rotation angle, and the liquid crystal display displays the detection result; there are torque-torsion angle, torque-time, torsion angle-time and other curves, and the data and curves are dynamically displayed along with the test process. Curve automatic scaling can edit and print data reports;

2.  Test parameters can be set to automatically detect material torque, maximum torque, yield torque , torsion strength, torsion angle and other indicators .

3. The  precision test system has the following characteristics : 

1)  Automatic reset: the computer receives the test start instruction, and the measurement system automatically resets;

2)  Automatic test: The test process and data acquisition, measurement, display, analysis, etc. are all completed by the computer ;

3)  Test software: Chinese or English user interface, menu prompts, mouse selection, simple and convenient operation ;

4)  Results reproduction: The test results can be accessed at will, and the data curve can be re-analyzed;

5)  Comparison of results: The characteristic curves of multiple samples can be superimposed, reproduced, and partially enlarged in different colors to realize the analysis and comparison of a group of samples;

6)  Batch test: For samples with the same parameters, a batch of samples can be tested in sequence after one setting;

7)  Automatic diagnosis: The system has an automatic diagnosis function, and it will automatically stop when overloaded. The measuring system and drive system will be checked regularly for overvoltage, overcurrent, and overtemperature. If abnormal conditions occur, the system will automatically stop and implement protection .

3. Main specifications of torsion testing machine