大型支承辊锻件淬火过程的数值模拟  

Numerical Simulation of Quenching for Large Backup Roll Forging

作　　者：陈学文[1] 刘泽虎[1] 王博[1] 陈天安[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023

出　　处：《热加工工艺》2013年第24期204-206,208,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51072240)

摘　　要：利用有限元法对支承辊锻件淬火过程中的温度场和组织场进行了数值模拟,分析了温度场和组织场的变化。结果表明:采用阶梯式加热能有效地减小支承辊心部和表面的温差,降低因热应力而引起开裂的可能性。在淬火结束后支承辊表面马氏体含量为80.6%,距表面100 mm处马氏体含量为58.5%。The temperature field and microstructure field of the backup roll forging during the quenching process were simulated by the FEM, and the variations of temperature and microstructure were analyzed. The results show that the use of step-heating can effectively reduce the temperature difference between the center and surface of the backup roll, and decrease the possibility of cracking due to thermal stress. After quenching, the volume fraction of Martensite is 80.6% on the surface of backup roll and 58.5% at a distance of 100 mm form surface.

关 键 词：支承辊 淬火 相变模型 数值模拟 

分 类 号：TG156.32[金属学及工艺—热处理]