How to choose between CBN grinding wheel?

CBN grinding wheels (cubic boron nitride) are mainly used for grinding hard and tough workpieces and cannot replace diamond SDC grinding wheels for grinding cemented carbide and non-metallic hard materials. When grinding, only oil-based coolant can be used, not water-based coolant. Because, under high grinding temperatures, CBN will undergo a chemical reaction when meeting an alkaline aqueous solution. The CBN grinding wheel will decompose in an alkaline solution at 300°C and can be slightly decomposed in boiling water. As a result, the crystal shape of the abrasive grains will be destroyed.