Computer calculation and measurement of three-dimensional temeprature fields of quenching process of T8 steel

摘要

Based on the principle of heat transfer and finite element method,calculations have been carried out to study three-dimensional temeprature fields of quenching processes of T8 steel.The calculations take into account comprehensively the problems of coupling of temeprature fields and phase transformation,nonlinear heat treatment parameters,etc..A try is made to calculate the problem of sudden change of surface convective conditions when workpieces are shifted from one cooling medium into another during actual quenching processes.The effect of precooling on the interfnal temeprature gradient is preliminarily predicted.Calculated results fit measrued results well.