对齿轮表面硬化热处理物理冶金因素的评述  

Review on physical metallurgical factors of surface hardening heat treatment for gears

作　　者：陈国民[1] 

机构地区：[1]郑州机械研究所,河南郑州450052

出　　处：《金属热处理》2015年第8期1-13,共13页Heat Treatment of Metals

摘　　要：为了提高齿轮的承载能力和使用寿命,普遍采用表面硬化热处理工艺,以得到高的表面硬度(强度)和良好的心部韧性,从而获得强韧结合的综合力学性能。显然,要研究齿轮的强度,首先就应当研究硬化层及心部的强度特性及其影响因素。本文就齿轮渗碳、渗氮及感应淬火的硬化层、心部基体及过渡区的物理冶金因素与齿轮的服役条件、受力状况及热处理工艺的关系进行了分析,并提出一些改进建议。In order to increase loading capacity and service life of transmission gears, surface hardening processes are now widely used, so as to get high surface hardness and core toughness, thereby gaining comprehensive mechanical properties. Relationship of physical metallurgical factors and their characteristics of the hardening case, matrix and transition zone of the carburizing, nitriding and induction hardening gears and the service condition, stress state, as well as heat treatment process is analyzed, and finally puts forward some improving suggestion.

关 键 词：表面硬化 热处理 物理冶金因素 齿轮 

分 类 号：TG162.73[金属学及工艺—热处理]