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the failure of spring fatigue test?Signal contact pin

source:Industry News    Popular:pogo pin for moilble phone     release time:2022-01-07 09:47:45     Article author:sznbone

  

the failure of spring fatigue test?Signal contact pin(图1)

  The tension spring fatigue testing machine is in the current career development process of the tension spring, and its functions are becoming more comprehensive, the types are becoming more abundant, the application fields are more broad, and the social demand is constantly increasing. The tension spring fatigue testing machine is one of many varieties. It is mainly used for fatigue life experiments of various tension springs, compression springs, spiral tension springs, shock absorbers, seal tension springs, etc. It is widely used in the production and application of tension springs and shock absorbers.

  Problem 1: The oil cylinder leaks and the pressure can't rise

  1. The reason for this problem is usually that there are impurities in the cylinder of the tension spring fatigue test machine. After the impurities enter the cylinder, the surface of the cylinder and the oil plug will be worn, and the gap will cause oil leakage. The solution is: Try to use oil with a higher viscosity. If the pressure does not rise or the oil leakage drops, it is advisable to replace the cylinder with a new one.

  2. If the tension spring fatigue test machine does not need to be used for a long time, the cylinder apron will be dry and cannot function better. This is also the reason why the pressure cannot rise. To solve this problem, the apron needs to be replaced or soaked for a period of time. .

  3. The safety adjustment is not allowed. When the oil pump delivery valve of the instrument is okay, if the pointer rises steadily to the high tonnage when the instrument is low tonnage, the pointer will always stop in a small range, no matter how the oil is added, The tonnage is still rising. At this time, it is necessary to loosen the nut of the safety valve, tighten the screw to an appropriate level, and adjust the nut. Because the safety valve is a device to ensure that the instrument is not damaged under accidental conditions.

  Problem 2: The force measurement pointer shows a sensational or stagnant situation when the load is evenly loaded.

  After the test and installation of the tension spring fatigue test machine is completed, the oil cylinder is filled with oil for the first time, and there will be air in it. If it is not removed in time, it will not only affect the degree, but also cause a pointer sensation, so the air must be emptied.


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