摘要
通过建立合适的三维有限元模型 ,研究了P2 0钢大型模具按 3种工艺进行淬火时的温度组织变化。模拟结果表明 ,工艺a造成了模块内过大的温度梯度 ;工艺b通过多次空冷加水淬使工件内的温度梯度下降 ;而工艺c使已转变的马氏体和贝氏体产生自回火。
Based on the three dimensional Finite Element Method (FEM),the temperature and microstructure variations of large scale P20 steel mould during quenching in 3 different processes were studied.The results show that significant temperature gradient exists during quenching in process a.The temperature gradient is less steep during quenching in process b by alternative water and air cooling.And the transformed martensite and bainite are self tempered by process c.The calculated temperature is in agreement with the measured one.
出处
《金属热处理》
CAS
CSCD
北大核心
2003年第7期33-37,共5页
Heat Treatment of Metals
关键词
淬火
塑料模具钢
数值模拟
quenching
plastic mould steel
numerical simulation