铁路货车在运用过程中，滑动轴承轴瓦如果产生端磨，易引起以下故障而破坏油膜，造成热轴。1）轴瓦端部在初期磨耗时，白合金碎片被碾入轴瓦内部，造成白合金吃片；2）轴瓦端部进一步磨耗时，出现轴瓦爬领，产生大量铁粉，加之供油不良，易造成轴瓦白含金哈铁粉；3）轴瓦端磨时 In the process of using railway wagons, if the plain bearing bush is end mill, the following faults can easily cause oil film damage and cause hot shaft. 1) When the end of the bearing pad is worn at the initial stage, the white alloy fragments are crushed into the inside of the bearing pad to cause the white alloy to eat the film. 2) When the end of the bearing pad is worn further, the bearing pad climbs and leads to a large amount of iron powder, Caused by bearing white metal ha ha iron powder; 3) when bearing pad end