钢轨水雾冷却过程研究与实践  

Research and Practice of Rail Water Mist Cooling Process

作　　者：王永明[1] 陈永超[1] 达木仁扎布 王慧军 WANG Yongming;CHEN Yongchao;DAMUREN Zhabu;WANG Huijun(Inner Mongolia Baotou Steel Union Corporation Limited,Baotou Inner Mongolia 014010,China)

机构地区：[1]内蒙古包钢钢联股份有限公司,内蒙古包头014010

出　　处：《高速铁路新材料》2022年第1期70-75,共6页Advanced Materials of High Speed Railway

基　　金：内蒙古自治区科技重大专项(ZDZX2018024)。

摘　　要：钢轨热处理是提升钢轨质量的重要手段,实验室内无法完全进行仿真,难以真实地反映钢轨热处理过程中内部温度的变化规律。结合生产实际数据,通过多段非线性模拟计算,近似显现了钢轨在水雾冷却过程中温度的变化规律。通过计算表明脉冲冷却特征只在钢轨表面表现明显,在热处理线内钢轨表层先开始组织转变,出热处理线后钢轨内部转变仍然在进行,百米钢轨经过热处理后钢轨头尾端温度差在10℃左右。计算机模拟仿真结果为现场钢轨热处理工艺优化提供了技术指导,更好地保证了钢轨产品质量。Rail heat treatment is an important means to improve rail quality,and it is difficult to reflect the changing rule of rail heat treatment process in the laboratory.In this paper,according to the actual production data,the use of multi-stage non-linear simulation calculation showed the law of temperature change of the rail during the water mist cooling process.The results show that the pulse cooling feature is only obvious on the surface of the rail.When the rail is cooled,the surface layer first begins to transform,and the internal transformation of the rail is still going on after the heat treatment line is exited.The temperature difference between the head and tail ends of the 100 m rail after the heat treatment line is about 10℃.The computer simulation results provide technical guidance for on-site rail heat treatment process optimization and better guarantee the quality of rail products.

关 键 词：热处理钢轨 水雾冷却 温度分布 数值模拟 

分 类 号：U213.4[交通运输工程—道路与铁道工程] TG156.3[金属学及工艺—热处理]