前言叶轮是离子式压缩机的重要元件,一般的闭式叶轮是由轮盘、轮盖和叶片组成,其制造工艺可以用铆接、铣铆或焊接来完成,结构形状比较复杂(见图1)。再由于近年来离心式压缩机趋向高压、高转速发展,其线速度可达300米/秒以上,强度要求充分可靠。造成叶轮破坏的原因,可能是基本强度不 Introduction Impeller is an important component of the ion compressor, the general closed impeller is composed of roulette, wheel cover and blade, the manufacturing process can be riveted, riveting or welding to complete the structure of the more complex shape (see Figure 1) . And then in recent years centrifugal compressors tend to high pressure, high speed development, the line speed of up to 300 m / s above, the full and reliable strength requirements. Impeller damage caused by the reason may be the basic strength is not