理化检验-物理分册2018，Vol.54Issue(4)：293-295,3.DOI:10.11973/lhjy-wl201804013
采煤机摇臂惰轮断裂失效分析
Failure Analysis on Fracture of Rocker Idler Gear of a Coal Mining Machine
摘要
Abstract
Failure analysis on the fatigue fracture of the rocker idler gear of a coal mining machine was carried out by means of macro inspection,magnetic particle inspection,chemical composition analysis,metallographic test and hardness test,and the cause of fatigue source micro-cracks was determined.The results show that cutting micro-cracks produced at the ring groove of the idler gear during its rework process after machining.The micro-cracks continued to expand under the alternating load of the rocker idler gear,and eventually led to the fatigue fracture of the idler gear.关键词
惰轮/疲劳断裂/返修/切削裂纹/失效分析Key words
idler gear/fatigue fracture/repair/cutting crack/failure analysis分类
矿业与冶金引用本文复制引用
王洋,王培科,孙萌..采煤机摇臂惰轮断裂失效分析[J].理化检验-物理分册,2018,54(4):293-295,3.
