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一、前言车轴是铁道机车车辆零部件中最重要的零部件之一。但是,众所周知,车轴轮座处的疲劳强度比光滑材料的疲劳强度要低得多。很早以来就在材料、设计及制造方法等方面进行了大量的研究。影响车轴轮座处疲劳强度的因素是非常复杂的。改变车轴形状以缓和应力集中,通过高频淬火、滚压加工等使表面硬化或使表面产生残余压应力的方法,对提高车轴轮座处的
I. INTRODUCTION Axles are one of the most important components of railway rolling stock parts. However, it is well known that the fatigue strength at the wheel axle seat is much lower than the fatigue strength of a smooth material. Much research has been done on materials, design and manufacturing methods since a long time ago. The factors that affect the fatigue strength of the axle seat are very complicated. Change the shape of the axle to ease the stress concentration, hardening the surface by induction quenching, rolling and other methods to make the surface residual compressive stress method to improve the wheel axle seat