The steel strand stress relaxation testing machine is mainly used for testing the tensile properties of prestressed steel wires, steel bars, steel strand wires and prestressed steel bars at room temperature. It is suitable for highway bridges, construction engineering, metrological quality inspection, scientific research institutes. , metallurgical steel and other industries. How to choose the steel strand stress relaxation test machine? Today, from the structure and force measurement system of the steel hinge line stress relaxation tester, the main points of its purchase are as follows:
1. Structural frame of steel strand stress relaxation testing machine
Since the steel strand stress relaxation test requires a long-term load test, the usual test time is more than 100 hours or the test time is required to reach 1000 hours. During the long-term test, the test machine is in a state of being stressed. This requires the test machine itself to have sufficient strength to avoid the relaxation of the stress relaxation testing machine itself, thus ensuring the accuracy of the test results.
The main body frame of the steel strand stress relaxation test machine produced by Jinan Wangtebei Instrument & Equipment Co., Ltd. adopts twice the maximum test force, which greatly increases the stability of the relaxation test and effectively reduces the test error caused by the structural frame. It adopts planetary reducer and self-locking worm gear structure, and has no gap ball screw. It has compact structure and high efficiency.
2. Steel strand stress relaxation tester force measurement system
The strength of the force sensor of the steel strand stress relaxation testing machine also determines the strength of its anti-relaxation; so it can maintain the stability and accuracy of measurement under the long-term relaxation test state has become the top priority.At this point, domestic sensors are difficult to achieve very good results. The steel strand tensile stress relaxation testing machine produced by Jinan Wangtebei Instrument and Equipment Co., Ltd. adopts the American Celton load sensor with high strength and good stability, which greatly reduces the error of the test force value during the long-term relaxation test.
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