钢轨铝热焊头断裂原因分析  

Causes Analysis of Rupture of Aluminum Hot Welding Joint in Steel Rails

作　　者：张亮 ZHANG Liang(Yongzhou Engineering Department of China Railway Guangzhou Group Co.,Ltd.,Yongzhou,Hunan,425000,China)

机构地区：[1]中国铁路广州局集团有限公司永州工务段,湖南永州425000

出　　处：《工程建设（维泽科技）》2023年第12期89-92,共4页Engineering Construction

摘　　要：本篇详细探讨了钢轨铝热焊头断裂的概述、影响因素和机理分析,并提出了预防措施。首先介绍了钢轨铝热焊的基本原理和构成,然后描述了焊头断裂现象,包括导致断裂的各种因素。接着分析了热焊参数、材料特性以及前处理和后处理工艺对焊头质量的影响。最后,提出了优化热焊参数、选择合适的材料以及改进前处理和后处理工艺等预防措施,以降低焊头断裂的风险,确保铁路轨道的安全和可靠性。This article provides a detailed overview,influencing factors,and mechanism analysis of the fracture of aluminum hot welding joints in steel rails,and proposes preventive measures.Firstly,the basic principle and composition of rail thermit welding were introduced,and then the phenomenon of welding head fracture was described,including various factors leading to fracture.Subsequently,the impact of hot welding parameters,material properties,and pre-treatment and post-treatment processes on the quality of welding joints was analyzed.Finally,preventive measures such as optimizing hot welding parameters,selecting suitable materials,and improving pre-treatment and post-treatment processes were proposed to reduce the risk of welding head fracture and ensure the safety and reliability of railway tracks.

关 键 词：钢轨铝热焊头 断裂现象 影响因素 机理分析 预防措施 

分 类 号：U213.46[交通运输工程—道路与铁道工程]