理化检验-物理分册2026，Vol.62Issue(6)：76-78,3.DOI:10.11973/lhjy-wl250043
重型卡车螺旋弹簧断裂原因
Reasons for the fracture of spiral spring of a heavy-duty truck
王静 1许永霞 1柯增权 1张新伟1
作者信息
- 1. 陕西重型汽车有限公司,西安 710000
- 折叠
摘要
Abstract
A certain spiral spring of a heavy-duty truck broke during use.The fracture cause of the spiral spring was analyzed using macroscopic observation,chemical composition analysis,scanning electron microscopy analysis,hardness testing,and metallographic examination.The results show that the fracture of the spiral spring originated from the grinding plane of the part end,and there was a secondary quenching phenomenon on the grinding plane,forming white bright martensite.The spiral spring was subjected to repeated compression or tensile loads during service,causing microcracks to form at the abnormal white bright martensite,which rapidly propagating and ultimately leading to a one-time fracture of the spiral spring.关键词
螺旋弹簧/二次淬火/白亮层/一次性断裂/显微组织Key words
spiral spring/secondary quenching/white bright layer/one-time fracture/microstructure分类
通用工业技术引用本文复制引用
王静,许永霞,柯增权,张新伟..重型卡车螺旋弹簧断裂原因[J].理化检验-物理分册,2026,62(6):76-78,3.
