材料期刊网

Based on exploring quenching mechanism, three types of medium-low carbon steel and low-alloy construction steel’s quenching critical cooling rate models were established, respectively speaking, modified Maynier model, Eldis model and isothermal curve model. During construction process, regression analysis and Newton interpolation method were used for higher calculated precision. Through comparing and analyzing, the superior one was singled out to evaluate the full hardening thickness after quenching. According to hardness analyzing, the deviation between predicted hardness distribution and the experimental value is within 6%.