Metallurgical rollers often use difficult to machine materials such as high nickel chromium hard cast iron, alloy steel, cast high-speed steel, tungsten carbide, etc., which have extremely high requirements for impact resistance, high temperature resistance, and wear resistance of cutting tools. UHD CBN cutting tools have higher impact resistance, wear resistance, and excellent heat resistance. Not only does it achieve higher processing efficiency, but it also has an ultra long service life.