The key to the spring manufactured by the spring factory is whether the working pressure of the spring is excellent, the use of the spring is to take into account the working pressure characteristics of the spring, the stability test of the spring factory generally uses the electronic device digital display spring pressure testing machine, which is a special instrument and equipment for detecting the spring tension, shrinking deformation and correlation, which is suitable for the detection of the load in the work of the tension and compression spring in a certain working length, and can be used in the elastic load detection during the ductility period of vulcanized rubber and spring sheets. The following is a description of the process of spring stability testing:
1. Before carrying out the declared test of the spring, the spring should be reduced to the test load once, and when the experimental load is more than the compression load, the compression load can be carried out as the experimental load, but the compression force can not exceed 1.5 times of the fixed compression load.
2. Advance preparation before load inspection: use a third-class standard dynamometer that matches the measurement range or a standard weight with a uniform precision to carry out the load tester to ensure that the high precision of the tester is not less than 1%; In addition, the length of the load tester is corrected by using a measuring block.
3. The inspection of the load of the specific aspect ratio of the spring: the central government of the clutch pressure plate of the load tester with the same measuring block as the specific aspect ratio, load the load similar to the value of the client of the sample drawing on the measuring block, and then clamp the precise positioning screw or precise positioning, put the measuring block into the measured spring, adjust the zero position, remove the weight of the spring, press the spring to a specific aspect ratio, and read the relative load, and then carry out relative changes to the myopia degree according to the deviation of the calibrated load tester.
4. The upper clutch pressure plate suppression spring just eliminated to the part, load tester omen value F0≈0.05F; The initial reading of the load test is described as F0 and its length and short number, and then loaded again so that the reading transition value of the long and short omen exceeds the divided deformation.
