铁路起重机支腿液压缸托架致裂分析  

Analysing the Root Cause of Cracking in the Bracketof Hydraulic Prop Stand of Railway Crane

作　　者：骆莉[1] 周友梅[1] 

机构地区：[1]湖北工学院,武汉纺织工学院

出　　处：《武汉纺织工学院学报》1996年第1期40-43,共4页

摘　　要：本文根据１６０吨铁路起重机支腿液压缸托架上裂纹的金相检验情况，分析得出裂纹产生的根本原因：裂纹并非热处理不当而引起的淬火裂纹，而是热处理以前就已存在于锻件毛坯中的，由钢中非金属夹杂物引起的微小锻造裂纹，因受热处理应力作用而扩展。This paper describes how the conclusion has been drawn from the metallurgical analysis that cracking in the bracket of hydraulic prop stand of 160t railway crane is not the quenching cracks caused by inapt quenching but rather micro forge cracks caused by non-metallic inclusion in forging blank before the bracket being heat-treated. The cracks extend further due to the heat treatment stress.

关 键 词：托架 裂纹 液压缸 起重机 铁路起重机 

分 类 号：TH218[机械工程—机械制造及自动化]