摘要
本文系统研究了冷轧辊试样在低温回火中残余应力与表面硬度的变化,找到了描述它们在回火保温中变化规律的函数式。主要结论:1) 在回火中,冷轧辊中残余应力的下降主要集中在回火保温的最初阶段;2) 冷轧辊淬火后的合理回火工艺制度应当是:t=150～160℃,τ=τ加+10小时。
The change of residual stress and surface hardness of 9Cr2Mo steel cold roller samples after temper aging were studied systematicall Functions to describe changes of residual stress and surface hardness had been found. The main conclusions are: (1) the reduction of residual stress in cold roller takes place mainly in the earlier stage of temper aging process; (2) the rationalized technological regulation of temper aging after hardening for 9Cr2Mo steel cold roller is: t=150—160℃, τ=τ_H+10 hours.
