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分析了SS_4改进型电力机车整体车轮车轴疲劳裂纹产生位置,指出了该型在役车轴超声波探伤存在的问题,对车轴结构提出了改进建议,介绍了车轴超声波探伤方法和在探伤中注意事项。
The location of the fatigue crack on the integral axle of the SS_4 modified electric locomotive was analyzed. The existing problems of the ultrasonic inspection on the service axle were pointed out. Some suggestions for the improvement of the axle structure were put forward. The methods of ultrasonic inspection on the axle and the matters needing attention during flaw detection were introduced.