工艺参数对H型钢热轧过程奥氏体演化的影响  

Influence of Process Parameters on Austenite Grain Evolution during H-beam Hot Rolling

作　　者：贺庆强[1] 袁宝民[1] 张勤河[2] 张海龙[2] 

机构地区：[1]中国石油大学(华东)机电工程学院机械系,山东东营257061 [2]山东大学机械工程学院机械系,山东济南250061

出　　处：《轧钢》2009年第3期18-21,共4页Steel Rolling

基　　金：山东省科技创新项目(2003182);中国石油大学博士基金资助项目(Y070318)

摘　　要：利用Gleeble-1500热模拟实验系统得到了Q235钢的高温流变应力数据,观测了完成变形瞬时原始奥氏体晶界,建立了流变应力及奥氏体再结晶数学模型。采用基于稳态判断的数值分析流程,对典型规格中翼缘H型钢多道次热轧成形过程进行了计算。分析了加热炉出炉温度、高压水除鳞强度、轧制变形速度、道次间隙时间等工艺参数对轧件内奥氏体晶粒演化的影响,并建立了估算H型钢腹板处奥氏体晶粒大小的数学模型。The flow stresses of Q235 steel at high temperature were studied by the Gleeble-1500, and the austenite grain size were also examined. A design of experiment for a multi-pass hot rolling of typical size H-beam was carried out through an integrated simulation model based on the steady-state judgment, and the sequence of main factors were confirmed. The relationship between the austenite grain evolution and the rolling parameters were concluded, and a formula calculating the grain size of the H-beam web was presented for the sake of application.

关 键 词：热轧H型钢 奥氏体演化 综合仿真模型 工艺参数 

分 类 号：TG335.44[金属学及工艺—金属压力加工] TG113.1