挖掘机斗杆铸件后支座开裂分析  

Analysis on the Cracking of Bucket Rod Cast of Excavator

作　　者：余绪坚 付万云 幸华坤 韩权 

机构地区：[1]柳州柳工挖掘机有限公司,广西柳州545100

出　　处：《装备制造技术》2015年第10期122-124,共3页Equipment Manufacturing Technology

摘　　要：通过对挖掘机斗杆铸件后支座故障件进行机械性能及组织形貌分析,从故障件硬度分布、拉伸试验状况结合其金相组织分析可知,热处理保温时间不足及淬火裂纹是导致铸件后支座开裂的根本原因。Mechanical properties and structure morphology analysis for faulty units of excavator bucket rod cast were performed .By analyzing the hardness distribution, tensile test condition and metallographic structure of faulty units, it can be known that insufficient holding time in heat treatment and quenching crack are lending causes for cracking of bucket rod cast.

关 键 词：斗杆 后支座 SCW550H 

分 类 号：TU621[建筑科学—建筑技术科学]