高速牙轮钻头轴承的失效分析。
钻头轴承的寿命不仅取决于轴承材质，更取决于工作环境。
Service life of bit bearing is not only determined by bearing material, but also by its environment.
本文着重研究了牙轮钻头轴承用钢的粉末渗钒配方、工艺和渗层的组织结构。
This paper deals mainly with the formulation, processes and microstructure of the diffusion Vanadium-coating with powder on the journal bearing steel of cone bits.
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