【摘要】 本文研究了管子钳活动钳口断裂现象。结果表明，断裂是由于热处理工艺不当、管子钳活动钳口齿部、螺纹部以及螺纹和齿部的过渡连接部分硬度过高引起；经试验提出了相应的改进措施。更多还原

【Abstract】 The fracture of follower tongs holder of pipe pliers is analyzed. The results show that the fracture may be due to improper heat treatment which leads to over hardness of the thread part and the joint of thread part and tooth part. A relative measure is proposed to improve the hardness.T5HZ更多还原