During the production of shell bodies, surface defects were found by magneticpowderinspection.
炮弹弹体生产中，磁粉检测发现表层缺陷。
2
The paper introduces the principle and technological process of magneticpowderinspection and its application to maintenance of heavy-duty truck.
介绍了磁粉探伤的原理、工艺流程及在重型汽车维修中的应用。
3
Finally, the welding procedure has been proved to be feasible by as-welded appearance checking, magneticpowderinspection, ultrasonic inspection and radiographic inspection.