轴箱弹簧断裂原因分析
Analysis on Cause of Fracturing of Axle Box Spring
王华1
作者信息
- 1. 中车兰州机车有限公司,甘肃 兰州 730700
- 折叠
摘要
在检修HXD3 型机车时发现 60Si2CrVA钢轴箱弹簧断裂.对断裂的轴箱弹簧进行了化学成分分析、表面硬度检测、金相检验和断口分析.结果表明:轴箱弹簧表面硬度不符合要求,表面脱碳,过渡部位有磨损,导致疲劳强度和承载性能降低从而断裂.
Abstract
During HXD3 loco being repaired it was found that the axle box spring of 60Si2CrVA steel fractured.The fractured axle box spring was tested for chemical composition,surface hardness,microstructure and fracture pattern.The results showed that the axle box spring exhibited unqualified surface hardness and decarburized case as well as was worn at the transition part,thus resulting in fracturing due to decrease in both fatigue strength and load-bearing capability.
关键词
轴箱弹簧/脱碳/磨损Key words
axle box spring/decarburization/wear引用本文复制引用
出版年
2024
NETL
NSTL
万方数据