Brown corundum grinding wheel can be used for grinding for a long time, but it will not produce too much grinding heat and blockage; Brown corundum grinding wheel can be used for grinding materials with different hardness, and has excellent effects from curved surface to special metal grinding. It can provide large cutting capacity and uniform surface grinding effect, and also can reduce the fine grinding time and some machining steps. Suitable for ordinary grinding of hardened steel, high speed steel, high carbon steel and other materials with high strength and hardness, and can also be used for machining threads, gears and thin-walled parts; Can be used for internal circle, external circle, plane, centerless, tool grinder, various special grinders and semi-fine grinding.