Computer controlled steel strand slack testing machine

Horizontal four-column, high rigidity, high stability, no vibration and shock, streamlined load frame, the frame size can be customized.
The system uses imported servo motors as the power source, with force closed-loop and displacement closed-loop control functions;
If a special event occurs during the test (such as power outage, computer freeze, etc.), the servo motor braking system starts to ensure that the target value remains unchanged; the software automatically saves the data, and the test can be continued after the event is resolved.
It has two test modes: displacement retention and deformation retention. The deformation sensor uses a high-precision grating displacement sensor with high precision and good stability;
The system can collect the temperature values of up to three temperature sensors, and display and record them in real time on the measurement and control software;
During the test, the relationship curve between the remaining test force or relaxation rate and time is displayed in real time.
It can automatically obtain the stress relaxation performance of the specimen (such as stress relaxation rate) and print out a complete test report.
Chinese standard data extrapolation: test cycle ≥ 120h, extrapolate 1000 hours of stress relaxation performance, extrapolate methods have double logarithmic and single logarithmic options, extrapolate data have all data and characteristic time point corresponding data options; test time can be set according to different requirements
Real-time drawing of residual test force-temperature, force-relaxation rate, force-displacement deformation and other curves.
Multiple protection functions: overload protection; overcurrent, overvoltage protection; safety protection when the sample breaks; automatic protection at the end of the test, etc.;