非调质塑料模具钢热加工的模拟研究  

Simulation Study on Hot Working of Non-Quenched and Tempered Steel for Plastic Mould

作　　者：罗毅[1] 吴晓春[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《钢铁》2008年第1期76-79,共4页Iron and Steel

基　　金：上海市重点学科建设项目(T0101)

摘　　要：采用Gleeble 3800热模拟试验机研究了非调质塑料模具钢(SWFT钢)的热变形工艺,试验结果表明,SWFT钢分别在1 0001、050、1 100和1 150℃单道次变形50%后以0.083℃/s的速度冷却时,随热变形温度的升高,先共析铁素体组织减少直至消失,但晶粒较粗大。多道次热变形后在相同冷却速度时确保先共析铁素体组织不出现,同时细化因单道次变形温度较高出现的粗大晶粒,为SWFT钢应用于一定截面尺寸的非调质塑料模具钢模块提供了制订锻造工艺的依据。The hot working process of non-quenched and tempered steel for plastic mould （SWFT steel） was simulated with Gleeble 3800 thermomechanical test system. The results showed that the proeutectoid ferrite decreases and even disappeares with the increase from 1000 to 1 150 ℃ of deformation temperature after one-pass deformation of 50% and cooling at a rate of 0. 083 ℃/s. The coarse austenite crystal formed by one pass deformation at 1 150 ℃ could be refined by multiple deformation. The simulation study provided reference for the hot working of the SWFT steel.

关 键 词：塑料模具钢 非调质钢 热模拟 热加工工艺 

分 类 号：TG142.15[一般工业技术—材料科学与工程]