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(一)前言机车车轮踏面的磨耗与旋修,是机车运用和检修的重要问题之一。为使车轮踏面保持一定的形状,每年需要为旋修和更换车轮耗费大量的人力和物力。因此,车轮踏面形状是影响车轮磨耗的一个比较重要的因素。踏面形状是否合理,直接影响车轮的磨耗与寿命。国内外的研究表明,不论车轮与钢轨的初始形状如何,它们在运用磨耗之后,都将分别趋向于一个稳定的形状。而在形状稳定之后,它们的磨耗将减慢。如果使车轮踏面的初始形状采用磨耗以后的稳定形状,即磨耗形踏面,钢轨断面
(A) Foreword Locomotive wheel tread wear and rotary repair, locomotive operation and maintenance of one of the important issues. In order to keep the wheel tread in a certain shape, it takes a lot of manpower and material resources to repair and change the wheel every year. Therefore, the shape of the wheel tread wheel wear is a more important factor. Tread shape is reasonable, a direct impact on wheel wear and life. Research at home and abroad shows that regardless of the initial shape of the wheel and rail, they tend to have a stable shape, respectively, after application of wear. After the shape is stable, their wear will slow down. If you make the initial shape of the wheel tread worn after the steady shape, that is, wear-shaped tread, the rail section