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Reasons for failure of hydraulic valves
2020-04-13 09:08 source: HAWE Harvey Publisher: Shanghai is crowned.
Shanghai Zhen Guan mechanical and Electrical Equipment Co., Ltd. sales experience import Harvey Germany Hydraulic series of products, the failure of imported hydraulic valves will have a tremendous impact on the entire hydraulic system. In this paper, the common phenomenon of hydraulic valve failure is taken as the starting point, and the reasons for the failure of hydraulic valves are briefly summarized, hoping to help you.

Mechanical failure

(1) wear: motion pairs between hydraulic valve spool, valve sleeve, valve body and other mechanical parts are constantly rubbed during use, causing the size, shape and surface quality of parts to change and become invalid.

(2) fatigue: when working under long-term load, the spring in the hydraulic valve will cause the spring to become soft due to fatigue, the length of the spring is shortened or the whole fracture is broken, and the spool and valve seat will also cause cracks, spalling or other damage due to fatigue. All of these may cause the valve to fail.

(3) deformation: when the residual stress in the process of the hydraulic valve parts and the external load stress during the process exceed the yield strength of the parts, the parts will be deformed and fail to complete the normal function.

(4) corrosion: too much moisture or acid substances are mixed in the hydraulic oil, which will corrode the relevant parts of the hydraulic valve after prolonged use, so that it will lose its accuracy and failure.
 
Above is the whole of Shanghai. Hydraulic valve Mechanical failure several common reasons, we can see whether the incorrect use of the failure caused by it, I hope that if you encounter the hydraulic valve failure at the scene, to see if these are some reasons, if there is insufficient, please come to add!

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