理化检验-物理分册2011，Vol.47Issue(4)：242-244,3.
起重机用钢轨断裂原因分析
Cause Analysis on Fracturing of Crane Rail
韩波1
作者信息
- 1. 上海宝冶工程技术有限公司,上海,200941
- 折叠
摘要
Abstract
By means of metallographic analysis, chemical compositions analysis, mechanical properties test and fracture analysis, the fracture reason of crane rail was analyzed. The results indicate that fracture of the rail was one-time brittle fracture and the fracture started from the scratch pits at the rail bottom. And there had serious decarburization phenomenon at the scratch pits area, which greatly reduced mechanical properties of the material. At the same time, Si content was higher than the required value, which also increased the brittleness of the material. So during the operation process of the crane rail, stress concentration formed at the scratch pits and cracks initiated and expanded quickly, and finally resulted in the fracture of the rail. The existence of decarburization phenomenon showed that the scratch pits area had been heated seriously, so it was thought that the scratch pits were caused by the electric are abrasion.关键词
起重机用钢轨/断裂/脱碳/刮擦凹坑Key words
crane rail/ fracture/ decarburization/ scratch pit分类
矿业与冶金引用本文复制引用
韩波..起重机用钢轨断裂原因分析[J].理化检验-物理分册,2011,47(4):242-244,3.
