Magnetic particle detection method for end face cracks of semi-hollow shaft

• Main Authors: MA SHENGDONG, HOU SHANSHAN, LIU HAIYANG, JI SHUAISHUAI, YAN YU
• Format: Patent
• Language: Chinese; English
• Published: 01.04.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention belongs to the technical field of magnetic particle detection, and relates to a magnetic particle detection method for end face cracks of a semi-hollow shaft. The problem that cracks in the end face positions of the semi-hollow shaft parts cannot be detected by magnetic powder is solved. A corresponding tool is designed and manufactured according to the actual contact shape and the contact area of the bottom of the inner hole of the semi-hollow shaft part, the safety proportion between the contact area and the detection diameter is given, and an annular tool auxiliary clamp is designed and manufactured according to the fact that the bottom face of the inner hole of the semi-hollow shaft part is in a non-planar shape. The surface coverage rate of part magnetic particle detection is increased, a detection blind area is avoided, and the magnetic particle detection quality of parts is improved. 本发明属于磁粉检测技术领域，涉及一种半空心轴端面裂纹的磁粉检测方法。本发明解决了半空心轴类零件端面位置裂纹无法被磁粉检测的问题。根据半空心轴类零件内孔孔底的实际接触形状及接触面积设计并制作了相应工装，给出了接触面