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September 16, 2022
The failure of hydraulic valve will have a huge impact on the entire hydraulic system. This article takes the common phenomenon of hydraulic valve failure as the starting point, and briefly summarizes the reasons for hydraulic valve failure.
(4) Corrosion: The hydraulic oil is mixed with too much water or acidic substances. After long-term use, it will corrode the relevant parts in the hydraulic valve, causing it to lose its due accuracy and fail.
When the pressure oil flows through the cylindrical slide valve structure of the hydraulic valve, the radial unbalanced force acting on the spool causes the spool to be stuck, which is called "hydraulic clamping".
Due to the rapid reversal or closing of the oil passage in the hydraulic system, the oil flowing in the system suddenly changes direction or stops flowing, causing the pressure to rise sharply, forming a large pressure peak, which is hydraulic shock.
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