理化检验-物理分册2024，Vol.60Issue(4)：42-45,4.DOI:10.11973/lhjy-wl202404010
曲轴开裂原因
Crankshaft crack cause
摘要
Abstract
A cracked crankshaft was analyzed by means of macroscopic observation,chemical composition analysis,mechanical property test and microscopic analysis.The results show that the crankshaft had poor lubrication during service,which caused friction between the crankshaft and the copper alloy bearing bush.The phenomenon of dissimilar metal infiltration occured under the influence of high friction temperature,and many microcracks filled with copper alloy were formed on the surface of the crankshaft.These cracks became fatigue sources,which eventually led to fatigue cracking of the crankshaft.关键词
曲轴/润滑不良/摩擦高温/异种金属渗入/疲劳开裂Key words
crankshaft/poor lubrication/friction high temperature/dissimilar metal infiltration/fatigue cracking分类
矿业与冶金引用本文复制引用
吕渊..曲轴开裂原因[J].理化检验-物理分册,2024,60(4):42-45,4.
