1、 Specifications:300kN

2、 Purpose:This testing machine is mainly suitable for testing the tensile stress relaxation mechanical properties of metal materials (such as steel strands, PC steel bars, and steel wires) at room temperature.

1、 Applicable standards:Meet the requirements of GB/T 10120-2013 Metal Stress Relaxation Test Method and ASTM E328-2008 Materials and Structures Stress Relaxation Test Method

4、 Functional features:

1. The system uses imported servo motors as power sources and has force closed-loop and displacement closed-loop control functions;

2. There are two testing methods: displacement holding and deformation holding. The deformation sensor adopts high-precision grating displacement sensor, which has high accuracy and good stability;

3. The system can collect temperature values from up to three temperature sensors and display and record them in real-time on the measurement and control software;

4. Real time display of the relationship curve between residual test force or relaxation rate and time during the experimental process.

5. According to 100Hour by hour experimentCalculate the specimen1000Hourly stress relaxation performance.

6. Automatically calculate the stress relaxation performance of the specimen(Like stress relaxation rate)And print out the complete test report.

5、 Main technical parameters: