天然金刚石刀具主要用于紫铜及铜合金和金、银、铑等贵重有色金属，以及特殊零件的超精密镜面加工，如录相机磁盘、光学平面镜、多面镜和二次曲面镜等。但其结晶各向异性，刀具价格昂贵。PCD的性能取决于金刚石晶粒及钴的含量，刀具寿命为硬质合金(WC基体)刀具的10～500倍。主要用于车削加工各种有色金属如铝、铜、镁及其合金、硬质合金和耐磨性极强的纤维增塑材料、金属基复合材料、木材等非金属材料。切削加工时切削速度、进给...
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