为了实现大型支承辊热处理过程的虚拟生产,运用非线性有限元法对大型支承辊在不同介质中淬火的温度场、组织场和应力/应变进行了计算机模拟.结果表明:淬火时间为55min,淬火介质为油或UNCON(25%)时,支承辊不能得到马氏体而硬度降低;以UNCON(15%)或水为淬火介质时,可以得到大量的马氏体,支承辊硬度和淬硬层深也符合要求,但残余应力较大.对以UNCON(15%)或水为淬火介质进一步优化,得出大型支承辊的热处理合适工艺为:从加热炉中出炉后,空冷5～10min,然后淬水15min,再转入300℃的炉中保温30h.
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