用超声波探伤有着电磁探伤不可比拟的优点,日益受到车辆工作者的重视。尤其在轮座镶入部探伤,现阶段只有用超声波探伤才能得出结果。为此,铁道部于1982年下达(82)铁辆字1894号文件规定,从1984年7月1日起,必须每年进行一次车轮超声波探伤。铁道车辆采用滚动轴承后,如仍沿用旧 The use of ultrasonic flaw detection with unmatched advantages of electromagnetic detection, vehicle operators are increasingly valued. In particular, the wheel set inserts Department of testing, at this stage only with ultrasonic flaw detection in order to reach the result. To this end, the Ministry of Railways issued in 1982 (82) Iron word 1894 document provides that from July 1, 1984 onwards, must be conducted once a year wheel ultrasonic flaw detection. After rolling bearings are used in railway vehicles, the old ones are still used