Hydraulic valve failure analysis and elimination measures

1. Introduction In the hydraulic system, in addition to the hydraulic pump oil supply and hydraulic actuators to drive the working device, a certain number of hydraulic valves are also required to predict the flow direction of the liquid flow, the pressure level and the flow rate. Control to meet the job requirements of the load. Therefore, the hydraulic valve is an important component that directly affects the working process and working characteristics of the hydraulic system. The failure of the hydraulic valve is also one of the main causes of hydraulic system failure. Therefore, the failure analysis of the hydraulic valve has a very important significance. This paper describes the main failure modes of hydraulic valves: hydraulic clamping, cavitation and cavitation, wear and the causes of them, and propose corresponding elimination measures.