理化检验-物理分册2025，Vol.61Issue(10)：36-38,44,4.DOI:10.11973/lhjy-wl240140
卡钩拉簧断裂原因
Reason for the fracture of the hook tension spring
卢凤池 1伍超群 1周景 2钟健强2
作者信息
- 1. 广东省科学院 工业分析检测中心,广州 510650
- 2. 广东恒力精密工业有限公司,中山 528400
- 折叠
摘要
Abstract
The hook tension spring of a certain lock broke during use.The reasons for the fracture of the tension spring were analyzed using macroscopic observation,chemical composition analysis,scanning electron microscopy analysis,metallographic examination,microhardness testing.The results show that under the action of cyclic stress,some of the coating on the surface of the tension spring peeled off,and improper heat treatment of the tension spring resulted in uneven hardness distribution of the tension spring.The surface hardness of the tension spring was relatively high,and microcracks appeared at the peeled off part of the coating,ultimately led to brittle fracture of the tension spring.关键词
卡钩拉簧/脆性断裂/镀层/力学性能/显微组织Key words
hook tension spring/brittle fracture/coating/mechanical property/microstructure分类
通用工业技术引用本文复制引用
卢凤池,伍超群,周景,钟健强..卡钩拉簧断裂原因[J].理化检验-物理分册,2025,61(10):36-38,44,4.
