... , golden coating, applicative to high speed machine. Machine rotate speed is 8000rpm~20,000rpm, heat resistance ... of coating: It has good effect on reduce friction coefficient, prolong cutters' life.5.Wear-resistance ... the higher Co, the better wear-resistance.6.ZHY-600 series drill bit, grain size ... , AlTiN-S coating, Sandvik material, for high speed cutting.8.Other products: carbide end mills, carbide ...