摘要
采用宏观分析、化学成分分析、硬度测试、扫面电镜分析、能谱分析及金相分析等方法对H13压铸模的失效进行了分析.结果表明,模具材质及热处理组织正常,模具零件型面根部转角处应力集中引发裂纹源,并扩展成大裂纹,最终导致模具开裂失效。
The failure of H13 die casting die was analyzed by macroscopic analysis, chemical composition analysis, hardness test, scanning electron microscopy analysis, energy spectrum analysis and metallographic analysis. The results showed that the die material and heat treatment structure were normal, and the stress concentration in the corner of the die part root caused the crack source, and then expanded into a big crack, which finally leaded to the failure of the die.
作者
李锋辉
杜开辉
郭俊鑫
黄历锋
黎肖辉
LI Feng-hui;DU Kai-hui;GUO Jun-xin;HUANG Li-feng;LI Xiao-hui(Catking Fishing Tackle Co., Ltd., Dongguan, Guangdong 532808, China;School of Mechanical Engineering, Tianjin University of Technology and Education, Tianjin 300222,China;Guangdong Dongguan Quality Supervision Testing Center, Dongguan, Guangdong 532808, China;National Mold Product Quality Supervision and Inspection Center,Dongguan, Guangdong 532808, China)
出处
《模具工业》
2019年第7期63-66,73,共5页
Die & Mould Industry
关键词
压铸模
应力集中
开裂失效
金相组织
硬度
化学成分
die casting die
stress concentration
cracking failure
metallographic structure
hardness
chemical composition
