气穴及期泼的气蚀现象在液压系统的各类故障中是常见、危害性极大的一种。液压系统产生气穴时，常使液压泵、阀等发生振动和噪声，同时由于气河上报一击车间．破坏了油液的流动连续性，降低了吸油管的通油能力，使液压泵的容积效率及额定工作能力难以正常发挥。气蚀严重时，在 Cavitation and cavitation cavitation phenomenon is common in the hydraulic system of various faults, a great hazard. Hydraulic system to produce cavitation, often make the hydraulic pump, valve and other vibration and noise, at the same time as the gas river reported hit the workshop. Undermining the fluid continuity of the fluid, reducing the oil flow through the oil pipe, making the volumetric efficiency of the hydraulic pump and the rated working ability difficult to function normally. Severe cavitation, at