How to test the pressure of stainless steel spring?
The important thing about springs produced by spring manufacturers is whether the spring pressure is outstanding. People use springs to consider spring pressure performance. Spring manufacturers generally use electronic digital display spring pressure testing machines for spring pressure testing. It is used to test spring tension, The special instrument for the compression deformation and the connection characteristics is suitable for testing the working load of the tension and compression springs at a certain working length, and can also be used in the elastic load testing of rubber, reeds and other elastic periods. So, next, the editor will describe for us the steps of the stainless steel spring pressure test: fingerprint code lock spring
1. Before the formal inspection of the stainless steel spring, the spring is compressed once to the experimental load. When the experimental load is more serious than the combined load, the combined load can be used as the experimental load, but the maximum compressive force cannot exceed Constant see pressure and 1.5 times of load.
2. Preparation before load detection: use a third-class standard dynamometer corresponding to the range or a weight with an accuracy of more than one to calibrate the load test machine to ensure that the test machine is not less than 1% fine; meanwhile, use a block to calibrate the load The length of the test machine is wrong.
3. The detection of the load of the stainless steel spring pressed to the specified height: Place the gauge block with the same height as the specified height in the center of the pressure plate of the load test machine, load the gauge block with a load near the nominal value of the pattern, and then lock the positioning screw or positioning Slightly, put the gauge block into the spring to be tested, adjust the zero position, remove the self weight of the spring, press the spring to the specified height, and read the corresponding load. Afterwards, the degree will be corrected according to the error of the calibrated load test machine.
4. The position where the upper pressure plate restricts the spring stiffness is exempted, and the value predicted by the load test machine F0≈0.05F; record the initial reading F0 of the load test and the length number, and then continue to load, so that the change value of the reading predicted by the length reaches the specified value The amount of deformation.
