包钢60 kg/m钢轨产品低温韧性研究  

Study on Low Temperature Toughness of 60 kg/m Rail Products of Baotou Steel

作　　者：张凤明[1] 董捷[1] 崔弘[2] 杨静 孙梦晨 Zhang Fengming;Dong Jie;Cui Hong;Yang Jing;Sun Mengchen(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Steel-making Plant of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010 [2]内蒙古包钢钢联股份有限公司炼钢厂,内蒙古包头014010

出　　处：《包钢科技》2025年第1期64-71,共8页Science & Technology of Baotou Steel

摘　　要：文章对包钢生产的60 kg/m热轧态U71Mn、U75V钢轨和在线热处理后U71MnH、U75VH钢轨进行低温性能研究,通过实验室制造的低温环境,进行钢轨冲击试验、断裂韧性试验,研究低温环境下不同钢轨韧性与温度的关系。阐明低温环境下包钢钢轨安全服役性能指标,总结了包钢四种钢轨产品在低温环境下韧性指标关系,为高原地区、低温地区的钢轨选用及高寒环境下铁路系统的安全运行提供数据支持。In this article,the low temperature performances of 60 kg/m as-hot-rolled U71Mn and U75V rails as well as U71MnH and U75VH rails after on-line heat treatment produced by Baotou Steel are studied.The relation between the toughness and temperature of different rails in low temperature environment is studied through impact test and test for fracture toughness of rails in the low temperature environment created in the laboratory.It is elaborated the performance indexes of safe service for rails of Baotou Steel in low temperature environment and summarized the relations of toughness indexes for four types of rail products of Baotou Steel in low temperature environment,which provide the data support for selecting rails in plateau and low temperature regions as well as safe operations of railway system in extremely cold environment.

关 键 词：60 kg/m钢轨 低温韧性 力学性能 

分 类 号：U213.4[交通运输工程—道路与铁道工程]