一、引言由于对铁路机车车辆的要求越来越严格,所以需要研究一种能够提高传统热处理车轮性能的机械处理方法。美国铁路协会要求采用抛丸处理,其目的在于提高车轮的疲劳强度。二、定义抛丸是一种用于提高金属件疲劳强度的冷加工方法,就是在受控制和重复的条件下利用叶轮抛射钢丸。经抛丸处理的金属表面具有能防止裂纹 I. INTRODUCTION Due to the increasingly strict requirements on railway rolling stock, a mechanical processing method that can improve the performance of traditional heat-treated wheels needs to be studied. American Association of Railways requires the use of shot blasting, which aims to improve the fatigue strength of the wheels. Second, the definition Shot blasting is used to improve the fatigue strength of the metal parts cold working method is to use the impeller in the controlled and repeated conditions projectile shot. The shot-blasted metal surface has the ability to prevent cracks