特种设备监督检验中轴类零件的无损检测是一重要项目,其目的是为了尽早发现安全隐患,而轴表面的横向裂纹是严重危害设备安全运行的因素之一。限于目前的检测设备与工艺,对这些轴销的无损检测一般需要将被检测的零件从设备上拆卸下来,然后对其表面进行磁粉检测,以期发现表面裂纹缺陷。但由于这些设备轴销的拆卸成本很高,现场实 Special equipment supervision and inspection of non-destructive testing of shaft parts is an important project, the purpose is to find out the potential safety problems as soon as possible, and the axial surface of the transverse cracks is one of the factors that seriously endanger the safe operation of equipment. Due to the current testing equipment and technology, the non-destructive testing of these pins generally needs to be disassembled from the device, and then the surface of the magnetic particle testing to detect surface cracks. However, due to the high cost of disassembly of these equipment shaft pin, the scene is real