70Cr3Mo钢大型支承辊淬火加热计算机模拟  

Computer Simulation of 70Cr3Mo Steel Large-scale Bearing Roller’s Heating Process for Hardening

作　　者：李勇军[1] 潘健生[1] 顾剑锋[1] 胡明娟[1] 张幸[2] 于文平 

机构地区：[1]上海交通大学教育部高温材料及测试开放实验室,上海200030 [2]中信重型机械公司热处理厂,河南洛阳471009

出　　处：《金属热处理》2000年第9期34-35,共2页Heat Treatment of Metals

基　　金：国家"九五"科技重点攻关项目

摘　　要：70Cr3Mo钢大型支承辊最终热处理淬火后辊颈和辊身需得到不同的硬度 ,因此采用辊颈包覆耐火纤维的加热方法。本文以非线性有限元法为基础 ,对加热过程进行了计算机模拟 ,实现了温度场和相变的耦合计算。比较几种不同情况的计算结果 ,认为利用原有的台车炉进行差温加热能满足要求 ,但辊身两端包裹耐火纤维对辊身的加热温度场影响很大 ,导致奥氏体层分布不理想 ,根据模拟结果提出了改进辊颈包覆耐火纤维的方案。In heating process,the 70Cr3Mo Steel large-scale bearing roller’s neck need to be packed by refractory fiber because the required hardness of its neck and body should be different after quenching.On the basis of non-linear finite element method,the heating austenitization process of 70Cr3Mo Steel bearing roller’s final heat treatment has been simulated by computer.Temperature field and phase transformation was coupled in the calculation.Comparing the results of the different conditions,it shows that using difference-temperature heating method with the existent car-type furnace is satisfied with the requirement.When the end of roller body is packed by refractory fiber,the austenite structure doesn’t distribute desirably.Based on the analysis,the reasonable suggestion was proposed for the original technology.

关 键 词：计算机模拟 差温加热 以承辊 70Cr3Mo钢 淬长 

分 类 号：TG162.6[金属学及工艺—热处理] TP391.9[金属学及工艺—金属学]