20CrMnTiH齿轮钢零件开裂原因分析  

Analysis of Cracking Causes of 20CrMnTiH Gear Steel Components

作　　者：董凤奎 刘凤连 丘先堂 李华强 DONG Fengkui;LIU Fenglian;QIU Xiantang;LI Huaqiang(Baowu JFE Special Steel Co.,Ltd.,Shaoguan 512123,China;Economic and Trade Bureau of Babu District,Hezhou 542899,China)

机构地区：[1]宝武杰富意特殊钢有限公司,广东韶关512123 [2]八步区经济贸易局,广西贺州542899

出　　处：《金属材料与冶金工程》2025年第2期23-26,共4页Metal Materials and Metallurgy Engineering

摘　　要：针对20CrMnTiH齿轮钢零件表面开裂问题,通过使用直读光谱仪(OES)、光学显微镜(OM)、扫描电子显微镜(SEM)等观察分析手段,对开裂零件进行了化学成分检测、金相检测、扫描电镜分析。结果表明:零件锻造过程不良,导致锻造过程中零件表面产生折叠缺陷,后续加工过程折叠缺陷未能完全去除,呈现出目视可见的裂纹缺陷。To address the surface cracking issue of 20CrMnTiH gear steel components,chemical composition analysis,metallographic examination,and scanning electron microscopy(SEM)analysis were performed on the cracked components using techniques such as optical emission spectrometry(OES),optical microscopy(OM),and SEM.The results indicated that the forging process of the components was inadequate,leading to folding defects on the surface during forging.These folding defects were not fully removed during subsequent processing,resulting in visible crack defects.

关 键 词：20CRMNTIH齿轮钢 表面裂纹 锻造折叠 

分 类 号：TF816[冶金工程—有色金属冶金]