【摘要】 研究了含稀土硬质合金刀具在切削过程中的行为．添加稀土后可抑制刀具和工件间金属元素互扩散，降低刀具切割时切削力和摩擦系数．从切削角度分析稀土硬质含金耐用度提高的原因更多还原

【Abstract】 The behavior of cemented carbide with RE in the course of cutting was investigated. By adding RE,the mutual diffusion of metal elements between the hardmetal tools and the workpieces is suppressed, the cutting force and the friction coefficient are also reduce. Therefore,the reason of the increasement of serviceability by adding RE into cemented carbides was analysed.更多还原