当液体在水泵内流动时,由于叶轮入口处压力低于工作水温的饱和压力将引起一部分液体蒸发(即汽化),蒸发后汽泡进入压力较高的区域时,受压突然凝结,于是四周的液体就向此处补充,造成水力冲击,这种连续的局部冲击负荷,会使叶轮表面逐渐疲劳损坏,引起金属表面的剥蚀,进而出现大小蜂窝状麻点,甚至 When the liquid flows in the pump, the pressure at the inlet of the impeller will cause a part of the liquid to evaporate (ie, vaporize) due to the pressure lower than the working water temperature. After the vapor bubbles enter the area with higher pressure, the pressure suddenly condenses, The liquid is replenished here, resulting in a hydraulic shock. This continuous local impact load causes gradual fatigue damage to the impeller surface, causing denudation of the metal surface, followed by the appearance of honeycomb pits of the size and even