齿轮“点蚀”的正交试验研究  

Study on Orthogonal Test on the Pitting Corrosion of Gear

作　　者：王正进[1] 

机构地区：[1]江苏省盐城市圣茂机械厂

出　　处：《摩托车技术》2012年第4期49-53,共5页Motorcycle Technology

摘　　要：评定碳氮渗齿轮质量好坏的主要参数是渗层深度、表面碳浓度和渗层中碳浓度梯度,而要获得较为准确的渗层深度、合适的表面碳浓度及平缓的碳深度梯度,除了要有正确的碳势、温度和渗碳总时间外,还要有合适的强渗时间与扩散时间之比。齿轮早期磨损点蚀的原因很多,齿轮精度、材料和热处理规范及润滑油选择不当都会造成齿轮早期磨损点蚀。研究齿轮渗碳层深度超出21.67%是否会导致齿轮点蚀,通过正交试验、工艺参数研究、金相检测及碳化物分析,找出合适的工艺参数。The quality of nitro-carburizing gear depends on the depth of diffusion layer, surface carbon concentration, and the carbon concentration gradient of layer. To improve their levels, proper carbon potential, temperature, carbon concentration time, and ratio between strong carburizing time and diffusion time are needed. Many thctors, such as poor precision of gear, bad materials, and poor heat-treatment process and improper lubricants etc., can give rise to the premature pitting and scuffing of gear. This paper introduces the study on the pitting corrosion of gear （when the depth of carburizing layer is over 21.67%） through orthogonal test, study on technology parameters, metallographic test and carbide analysis.

关 键 词：碳氮化合物 渗层深度 点蚀 正交试验 

分 类 号：U483[交通运输工程—载运工具运用工程]