摘要
从齿轮受力和失效特点出发，通过金相检验分析，指出了渗碳层中的碳化物对齿轮强度有害，渗碳淬火后的齿面应避免出现碳化物．在实际生产中为了使齿根含碳量接近共析成分，以齿顶部出现少量碳化物为宜．
This paper studies the pressure on the gear and its invalidation character and after the analysis of the metallographical test. It concludes that the carbide in the carbuinaing layer has negative effect on the gear strength. So carbide should be avoided after the carburiaing quenching of the gear teeth.In practical production,the gear teeth should contain less carbide in order to ensure the carbon concentration in the teeth roots in close to that of the eutectoid.
