道岔钢轨制造中磁粉检测的常见缺陷分析

Analysis on common defects of magnetic particle detection in the switch rail manufacture

道岔钢轨在制造加工过程中,由于原材钢轨、制造工艺及环境温度等因素的影响,易形成一些磁粉检测常见缺陷。分析这些常见缺陷的产生原因和磁痕显示特征,以为改进制造生产工艺防止缺陷的产生提供依据。

In the process of manufacturing switch rail,as observed by magnetic particle testing,it is easy to form some common defects due to some influencing factors such as the steel raw material,manufacturing process and environmental temperature.The analysis on the causes of defects and magnetic image display characteristics shall be helpful for improving manufacturing process and providing basis for preventing the defect.