某50CrVA弹簧钢零件断裂原因分析
Fracture cause analysis of a 50CrVA spring steel part
崔景博 1汪凌波 1国飞 1卢振国1
作者信息
- 1. 辽沈工业集团有限公司,辽宁沈阳 110045
- 折叠
摘要
采用金相显微镜、扫描电镜、氧氮氢分析仪等设备对某50CrVA弹簧钢零件断裂原因进行了分析.结果表明,50CrVA弹簧钢零件断裂均发生在直角拐角的应力集中处,经过镀锌后,由于除氢处理不完全,产生了氢脆.对此提出了改进措施,如及时更换钝化的落料模具,增加除氢处理的时间.
Abstract
Fracture cause of a 50CrVA spring steel part was analyzed by means of metallographic microscope,scanning electron microscope and analyzer of oxygen,nitrogen and hydrogen.The results show that the fracture of the 50CrVA spring steel occurs at the stress concentration position in the right corner in type of hydrogen embrittlement produced due to incomplete hydrogen removal treatment after galvanizing.Finally,the improvement measures are proposed,i.e.,the blunted blanking die should be timely replaced,and the time of the hydrogen removal treatment should be increased.
关键词
50CrVA弹簧钢/零件/应力集中/氢脆/模具钝化Key words
50CrVA spring steel/parts/stress concentration/hydrogen embrittlement/die blunting引用本文复制引用
出版年
2024
NETL
NSTL
万方数据