1.what is CBN?

CBN is the abbreviation of “cubic boron nitride”,a high-hardness material useful for abrasive cutting and for coatings for machine parts.for some super hard material workpieces,if you use normal carbide or ceramic cnc inserts,you will need to exchange them frequently.so people find out CBN coating carbide and CBN tipped inserts can improve cutting efficiency and tools life.the key point of CBN inserts is grinding in stead of cutting.