3Cr13道岔融雪弹性卡断裂分析及对策  

Fracture Analyses for 3Crl3 Mounting Clip of Switch Snow Melter and the Countermeasures

作　　者：薛家兵 

机构地区：[1]北京中铁通电务技术开发有限公司,北京100166

出　　处：《铁道技术监督》2014年第7期33-34,38,共3页Railway Quality Control

摘　　要：3Cr13电加热道岔融雪弹性卡在使用中发生断裂,分析断裂弹性卡化学成分,对其断口进行宏观和微观观察,结果表明断裂的原因为腐蚀性介质环境和交变应力共同作用下形成的多源疲劳和应力腐蚀。提出优化弹性卡结构、使用偏碱性防腐涂料对3Cr13弹性卡进行表面处理的应对措施。3Cr13 mounting clip for electric heating switch snow melter fractures in use. Chemical composition analysis, macroscopic and microscopic observations on fracture surfaces are implemented. The results show that the causes of fracture are mainly multiple-source fatigue and stress corrosion which result from the corrosive medium environment and alternative stress. The author suggests that the structure of mounting clip should be optimized, and the surface of 3Cr13 mounting clip should be treated with alkaline corrosion coating.

关 键 词：道岔 融雪器弹性卡 断裂 成因分析 

分 类 号：U216.412[交通运输工程—道路与铁道工程]