Cubic boron nitride (CBN) grinding wheel is not suitable for grinding cemented carbide and nonmetallic hard materials. Cubic boron nitride (CBN) grinding wheel is suitable for processing the following products: ① high manganese steel; (2) high chromium, nickel and molybdenum alloy steel; ③ Chilled cast iron (HS80 ~ 90); ④ Various hardened steels (HRC 55 ~ 65); (5) all kinds of cast iron (HB 200 ~ 400), etc. , and has been processed in domestic cars (gears, flywheels, shafts, bearings, etc. ), roller, mud pump (impeller, volute, guard plate, jacket, etc. ), mold and cylinder liner; ⑥ High-hardness, soft and tough materials such as glass and precious stones have solved the problem of cutting high-hardness and difficult-to-process materials in all walks of life, which can improve work efficiency, greatly save processing time and electric energy and obtain huge economic benefits.