这是东芝坦葛洛伊公司新开发的可转位刀片,采用CVD方法进行涂层处理,主要满足高速切削的需要。T812的基体材料是高韧性、高耐磨性硬质合金,中间夹有一层抗塑性变形的中间层,是一种专用基体材料。其涂层为多层涂层,突出的特点是既具有很高的耐磨性又不易崩刃,用于高速(250～350m/min)的断续、连续切削时,工具寿命表现出高度的稳定性。对比试验表明,T812刀片的抗崩刃性为普通刀片的3 This is a newly developed indexable blade manufactured by TOSHIBA TAGLOY CO., Which is coated by a CVD method to meet the needs of high-speed cutting. T812 matrix material is high toughness, high wear-resistant cemented carbide with a middle layer of plastic deformation of the middle layer is a dedicated matrix material. The coating is multi-layer coating, outstanding features are both high wear resistance and not easy to chipping, for high-speed (250 ~ 350m / min) intermittent, continuous cutting, the tool life showed a high stability. Comparative tests show that the chipping resistance of the T812 blade is 3 for an ordinary blade