膜片弹簧断裂原因分析  

Cause Analysis of Diaphragm Spring

作　　者：程吉浩[1] 刘文斌[1] 王俊霖[1] 刘敏[1] 

机构地区：[1]武汉钢铁(集团)公司研究院,湖北武汉430080

出　　处：《武汉职业技术学院学报》2015年第5期79-80,96,共3页Journal of Wuhan Polytechnic

摘　　要：针对材质为50Cr VA膜片弹簧的断裂现象,通过电镜扫描和金相分析等手段,对断裂部位的断口形貌和组织进行了试验观察,分析出其原因是:在加工该膜片弹簧的外圆弧时,边缘出现微裂纹,经压淬和热处理后扩展,先期开裂部分被高温氧化,在进行最终弹性检测时受往复压迫而失稳开裂。According to the phenomenon of 50CrVA diaphragm spring cracking, this paper tries to find out the rea-sons that observing the carking sample by metallographic microscope and SEM. It shows that,at the time of working the outer circular of the diaphragm spring,micro-cracks appeared on the edge, then during heat treatment, early cracking site was oxidized,at last it was instability cracking at the time of elastic detection.

关 键 词：膜片弹簧 氧化物 断口金相检查 

分 类 号：TH135[机械工程—机械制造及自动化]