), microcrystalline corundum (MA), zirconium corundum (ZA).
Brown corundum grinding wheel: Brown corundum has high hardness and good toughness, and is suitable for grinding metals with high tensile strength, such as carbon steel, alloy steel, malleable cast iron and hard bronze. This kind of abrasive has good grinding performance and wide adaptability, and is often used for rough grinding with large allowance, and its price is cheap, so it can be widely used.
White corundum grinding wheel: The hardness of white corundum is slightly higher than that of brown corundum, but the toughness is lower than that of brown corundum. Abrasive particles are easily broken during grinding, so the grinding heat is small. It is suitable for manufacturing grinding wheels for fine grinding hardened steel, high carbon steel, high speed steel and grinding thin-walled parts, and the cost is higher than that of brown corundum.
Black silicon carbide grinding wheel: Black silicon carbide is brittle and sharp, and its hardness is higher than that of white corundum. Suitable for grinding materials with low mechanical strength, such as cast iron, brass, aluminum and refractories.
Green silicon carbide grinding wheel: Green silicon carbide has higher hardness and brittleness than black silicon carbide, sharp abrasive particles and good thermal conductivity, and is suitable for grinding hard and brittle materials such as cemented carbide, optical glass and ceramics.