杆式半轴热处理过程中淬火变形规律研究  

Study on Quenching Deformation of a Rod Semi Shaft During Heat Treatment

作　　者：韩浩锋 贾建利[1] HAN Haofeng;JIA Jianli(School of Mechatronic Engineering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]西安工业大学机电工程学院,西安710021

出　　处：《西安工业大学学报》2023年第2期114-119,共6页Journal of Xi’an Technological University

基　　金：柴油机高增压技术国防科技重点实验室基金项目(6142212200203);陕西省科技厅重点研发计划项目(2019GY-126);陕西省特种加工实验室开放基金项目(SXTZKFJJ202001)。

摘　　要：为减小杆式半轴淬火后的变形量,文中利用Jmatpro对C、Mo、Cr、Mn四种元素进行端淬实验模拟计算,并结合40Cr和42CrMo半轴淬火实验,分析了元素对材料性能的影响,解释了对淬火变形的影响。针对端淬实验的模拟,采用田口实验设计分析了四种元素对马氏体体积分数、屈服强度和硬度的影响程度。通过半轴淬火实验,分析了同种工艺条件下40Cr和42CrMo变形量。研究结果表明:Mo元素质量分数升高对材料的马氏体体积分数、屈服强度和硬度的提升影响最明显;42CrMo的获得马氏体的能力和变形抗力强于40Cr;通过提高材料的变形抗力和增强支撑方式能有效减小40Cr和42CrMo的半轴变形量。In order to reduce the deformation of a rod semi shaft after quenching,JMatPro was used to simulate the Jominy test of C,Mo,Cr and Mn,and both the quenching experiments of 40Cr and 42CrMo rod semi shaft were conducted to analyze the influence of these elements on material properties,and then explained the influence on quenching deformation.According to the simulation of the Jominy test,the degrees to which the four elements influence the martensite content,yield strength and hardness was analyzed by using Taguchi experimental design.The deformation of 40Cr and 42CrMo under the same process conditions was obtained by the rod semi shaft quenching experiment.The results show that the increase in Mo content has the most obvious effect on the increase in martensite content,yield strength and hardness of the material.42CrMo obtains greater martensite ability and deformation resistance than 40Cr does.By improving the deformation resistance of the material and strengthening the support constraint,the rod semi shaft deformation of 40Cr and 42CrMo can be effectively reduced.

关 键 词：杆式半轴 马氏体体积分数 变形抗力 支撑约束 

分 类 号：TG161[金属学及工艺—热处理]