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窄流道的整体离心泵叶轮流道清理工作很困难,下面介绍一种应用磨料液流来提高离心泵叶轮流道光洁度的方法。一、原理离心泵叶轮高速旋转时,从进水口送入磨料介质。磨料介质经流道流出,磨料上的切削刃在挤擦流道表面时对金属表面产生了切削作用,并使金属切削随磨料流一起排走,从而使流道光洁度大大提高。由于流体中的固体的动能是靠运动流体所具有的能量来增大的,因此其切削作用决定于叶间流道内的压力分布。压力大的地方切削效果就好,反之就差。这种工艺可对未经机加工过的粗糙面进行加工,光洁度高,但由于采用叶轮自身旋
The overall flow of narrow-flow centrifugal pump impeller channel cleaning work is very difficult, the following describes a method using abrasive fluid flow to improve centrifugal pump impeller runner finish. First, the principle Centrifugal pump impeller high-speed rotation, from the inlet into the abrasive medium. The abrasive medium flows out through the runner. The cutting edge on the abrasive exerts a cutting action on the metal surface when squeezing the runner surface, and the metal cutting is discharged along with the abrasive flow so as to greatly improve the finish of the runner. Since the kinetic energy of the fluid in the fluid is increased by the energy of the moving fluid, the cutting action depends on the pressure distribution in the flow channels between the leaves. Where the pressure of the cutting effect is good, on the contrary worse. This process can be rough machined without machining, high finish, but due to the use of impeller itself spin