引起车辆发生燃轴事故的因素是很多的,轴瓦白合金层与瓦体结合不良也是一个主要因素。为了提高轴瓦质量,保证列车的安全运行,我厂试验了用超声波探伤方法检查轴瓦质量,取得了较好的效果。它不但能检查白合金层与瓦体的结合情况,而且还能检查白合金层和瓦体内部的缩孔、夹渣、疏松等缺陷。 There are many factors that cause the vehicle to happen on the combustion shaft, and the bad combination of the bearing white alloy layer and the tile body is also a major factor. In order to improve the quality of the bearing and ensure the safe operation of the train, our factory has tested the quality of the bearing with the ultrasonic testing method and achieved good results. It can not only check the combination of white metal layer and tile body, but also check defects such as shrinkage cavity, slag inclusion and looseness in white alloy layer and tile body.