基于模拟软件的贝氏体钢轨热处理工艺优化  

Optimization of heat treatment process of bainitic rails based on simulation software

作　　者：陈彦孜 刘馨宇 苏航[2] 谢本昌 岑耀东[1] 陈林[1] Chen Yanzi;Liu Xinyu;Su Hang;Xie Benchang;Cen Yaodong;Chen Lin(College of Materials and Metallurgy,Inner Mongolia University of Science and Technology,Baotou Inner Mongolia 014010,China;Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou Inner Mongolia 014010,China)

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [2]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010

出　　处：《金属热处理》2024年第7期38-42,共5页Heat Treatment of Metals

基　　金：内蒙古自治区科技重大专项(zdzx2018024);包钢科技攻关项目。

摘　　要：利用DEFORM有限元软件对贝氏体钢轨淬火热处理工艺进行模拟,并与实际淬火处理钢轨的组织和硬度进行对比,研究有限元模拟的准确性。结果表明,贝氏体钢轨模拟淬火处理后,轨头淬透层厚度12 mm、硬度40.42~42.23 HRC,与实际测量淬透层厚度11 mm、硬度40.20~43.40 HRC相近;利用彩色金相法及Image-Pro软件统计得到钢轨轨头位置贝氏体含量约63.80%、马氏体及残留奥氏体含量约36.20%,对比模拟所得结果(贝氏体含量约57.7%、马氏体及残留奥氏体含量约42.3%),误差均在6%左右。证实了有限元模拟结果的准确性,可用于指导实际生产。DEFORM finite element software was used to simulate the quenching process of bainitic rails,and the microstructure and hardness of the rails were compared with that of the actual quenched rails to study the accuracy of the finite element simulation.The test results show that after simulated quenching,the hardened layer thickness at the rail head is 12 mm,and the hardness is 40.42-42.23 HRC,which are similar to the actual measured hardened layer thickness of 11 mm,and the hardness of 40.20-43.40 HRC,respectively.Using the color metallographic method and Image-Pro software,the bainite content at the rail head is about 63.80%,and the martensite+retained austenite content is about 36.20%.Compared with the simulation results(bainite content of 57.7%,martensite+retained austenite content of 42.3%),the errors are all around 6%.The accuracy of finite element simulation results is confirmed,which can be used to guide the actual production.

关 键 词：贝氏体钢轨 热处理 组织 有限元模拟 淬透层 

分 类 号：TG161[金属学及工艺—热处理]