采用陶瓷CC6050、立方氮化硼CB7025和硬质合金GC2025刀具干切削淬硬轴承钢GCr15,研究了各刀具切削后的磨损曲线以及刀具的磨损形貌,并分析了刀具的磨损机理.结果表明:CB7025刀具的寿命最长,其次为CC6050刀具,GC2025刀具的最短;CC6050和CB7025刀具的前刀面均呈月牙洼磨损形貌,后刀面均出现了明显的磨损带;刀具的磨损机理主要有扩散磨损、氧化磨损和磨粒磨损,CC6050刀具中含有的铝和硅元素与工件材料化学亲和性较小,不易发生粘结磨损,CB7025刀具存在相变磨损,GC2025刀具存在粘结磨损.
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