... boron nitride the composite chip (PCBN) flat end mill, OD and chamfer mill processing.2, carbide dies, grinding parts.3, ... Product superiority (compared with resin diamond wheel)1, high durability and shape retention: its durability resin grinding wheel 2-3 times ... wheel abrasive combined with strong, wear uniform and stable, and grinding wheel shape is not easy to produce change;2, the sharpness is ...