随着车辆技术的发展、列车运行速度的提高和运输吨位的增加,对车辆每个零部件的工作状况和运行品质的检查和监视就更为重要了。然而,值得推广的方法是无损检查,因为不会影响零部件的性能。一、几种不同的无损检查技术对于检查铁路车辆零部件来说,所使用的检查技术主要有: ——用于表面损伤研究·直观检查; With the development of vehicle technology, the speed of trains and the increase of transport tonnage are more important for the inspection and monitoring of the working conditions and running qualities of each component of the vehicle. However, it is worth to promote the method is nondestructive inspection, because it will not affect the performance of components. First, several different non-destructive inspection techniques For the inspection of railway vehicle components, the inspection techniques used are: - for surface damage studies • visual inspection;