PCD 金刚石车削刀具
金刚石刀具牌号有CDW10,CDW20,CDW30;分别适合精加工,中等精加工和粗加工。
铝合金铝制品应采用聚晶金刚石刀具加工工件体现出来的表面光洁度亮度精度高刀具有超高的耐磨性特耐用
金刚石刀具适合加工非铁基金属:铝及铝合金、巴氏合金、黄铜合金、铜合金、铅合金、锰合金、硅铝合金、银、铂、钨基硬质合金、锌合金。
金刚石刀具适合加工材料主要有三大类:非铁基金属材料、非金属材料和一些复合材料:
1,非铁基金属:铝及铝合金、巴氏合金、黄铜合金、铜合金、铅合金、锰合金、硅铝合金、银、铂、钨基硬质合金、锌合金。
2,非金属材料:氧化铝、碳化硅,聚氨酯,有机玻璃,石墨、烧结陶瓷、电木、氧化铍、陶瓷、环氧树脂、玻璃、玻璃陶瓷、橡胶和各种塑料,石材、硬质碳、碳纤维增强塑料(CFRP)、人造板材、强化复合地板及其它木基板材(如MDF)。
3,复合材料:石棉、环氧玻璃纤维、碳填充材料、尼龙填充材料、酚类填充材料、聚氯乙烯填充材料、硅酸类填充材料,玻璃钢(玻璃纤维)
典型加工工件:
活塞、碳化硅、轮毂、电机转子(电机换向器),电枢、电极、箱体、强化木地板等切削加工上应用广泛。
铸造铜合金加工选用聚晶金刚石刀具主要性能指标:
①聚晶金刚石刀具的硬度可达8000HV,为硬质合金的8~12倍;
②聚晶金刚石刀具的导热系数为700W/mK,为硬质合金的1.5~9倍,甚至高于PCBN和铜,因此聚晶金刚石刀具刀具热量传递迅速;
③聚晶金刚石刀具的摩擦系数一般仅为0.1~0.3(硬质合金的摩擦系数为0.4~1),因此聚晶金刚石刀具刀具可显著减小切削力;
④聚晶金刚石刀具的热膨胀系数仅为0.9×10^-6~1.18×10^-6,仅相当于硬质合金的1/5,因此聚晶金刚石刀具刀具热变形小,加工精度高;
⑤聚晶金刚石刀具刀具与有色金属和非金属材料间的亲和力很小,在加工过程中切屑不易粘结在刀尖上形成积屑瘤。
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