凸轮轴异常磨损分析及工艺优化  

Abnormal wear analysis and process optimization of camshaft

作　　者：牛恩来 赵俊平 余金科 胡大鹏 NIU Enlai;ZHAO Junping;YU Jinke;HU Dapeng(Dongfeng Commercial Vehicle Technology Center,Shiyan 442001,Hubei,China;Dongfeng Loong-Gine Power Co.,Ltd.,Shiyan 442001,Hubei,China)

机构地区：[1]东风商用车技术中心,湖北十堰442001 [2]东风龙擎动力有限公司,湖北十堰442001

出　　处：《金属加工（热加工）》2024年第5期77-82,共6页MW Metal Forming

摘　　要：失效分析得出,凸轮轴感应淬火质量及凸轮轴精磨工艺引起的磨削烧伤是凸轮轴异常磨损的主要原因。通过砂轮修型、优化磨削工艺参数即采取更优磨削烧伤检测手段,增大磨削烧伤检测频次等措施彻底消除磨削烧伤。优化感应器尺寸、感应淬火参数及完善感应淬火后的检测方法,使感应淬火质量得到显著提升。同时工艺优化措施已经固化应用于实际生产中,凸轮轴短里程的异常磨损问题已基本解决。Failure analysis proved that the camshaft induction quenching mass defect and the grinding burn caused by the camshaft fine grinding process were the main causes of the abnormal camshaft wear.The grinding burns was completely eliminated through repairing the grinding wheel,optimizing the grinding process parameters,adopting a better grinding burn detection method,and increasing the frequency of grinding burn detection.The induction quenching quality was significantly improved by optimizing the size of induction heater,induction quenching parameters and improving the detection method after induction quenching.Finally,the process optimization measures was cured and applied in the actual production,and the abnormal wear problem of camshaft short mileage had been basically solved.

关 键 词：凸轮轴 异常磨损 磨削烧伤 感应淬火 工艺优化 

分 类 号：TH117.1[机械工程—机械设计及理论] TG162.71[金属学及工艺—热处理] U466[金属学及工艺—金属学]