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Yingkou Forging Machine Tool Co., Ltd

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0417-3850666

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Address: No. 98, Binhai Road South, West District, Yingkou City, China (Liaoning) pilot Free Trade Zone

Chinese website: "Yingkou forging press" "Yingkou forging machine tool"


Causes of valve jamming in hydraulic system of hydraulic press

2022-01-05 15:11:05
times

Hydraulic clamping occurs in the hydraulic system of the hydraulic press, which increases the wear of the slide valve and reduces the service life of the hydraulic components. In the control system, the displacement of the valve core usually uses electromagnets and springs with small force. The hydraulic clamping will cause the valve core to act flexibly or fail to act, resulting in adverse consequences for the operation of the system. What are the reasons for this? Auto parts manufacturer


1. During the assembly process of hydraulic press, it is necessary to prevent parts from bumping and pay attention to cleaning to reduce the ingress of particulate pollutants.


2. Impurities are mixed in the hydraulic oil. The dirt particles in the oil of the mating clearance and the gap blocking phenomenon are also important reasons for the hydraulic clamping.


3. Improve the manufacturing accuracy of the valve core and valve hole.


4. Hydraulic clamping caused by unbalanced radial force of hydraulic press.


Auto parts manufacturer


5. When the accuracy of the hydraulic press valve core allows, the cone can be grinded. If the structure allows, the conical shoulder can be used. The small end of the shoulder faces the high-pressure area, which is conducive to the radial alignment of the valve stem.


6. The solenoid push rod on the dry solenoid valve is biased.


7. Carefully remove the burrs on the shoulder of the core and the edge of the valve hole countersink groove.


8. When the slide valve moves, the additional resistance and the radial force are generated. Sometimes, the additional resistance of elastic deformation of the valve core or the valve sleeve under the working pressure and the additional resistance generated by the liquid boundary layer in the gap between the valve core and the valve sleeve are also generated.


9. The adsorption of neutral molecules in oil is unbalanced.

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