Grinding wheel is an indispensable tool for grinding. Many people don’t know much about it. In fact, there are many types of grinding wheels. Let’s take a look at the grinding wheels commonly used in daily life:
Generally, the commonly used abrasives are brown corundum and white corundum. This is followed by black silicon carbide and green silicon carbide. The other commonly used ones are chrome corundum, single crystal corundum, microcrystalline corundum, zirconium corundum, and emery.
Brown corundum:
It has high hardness and high toughness. Suitable for grinding metals with high tensile strength. Such as carbon steel, alloy steel, malleable cast iron, hard bronze, etc. This abrasive has good grinding performance and wide adaptability. It is often used for rough grinding with a large margin, and it is cheap and can be widely used.
White corundum grinding wheel:
The hardness of white corundum is slightly higher than that of brown corundum, and the toughness is lower than that of brown corundum. During grinding, the abrasive grains are easily broken. Therefore, the grinding heat is small, and it is suitable for the manufacture of grinding wheels for fine grinding hardened steel, high carbon steel, high speed steel and thin-walled parts. The cost is higher than that of brown corundum.
Black silicon carbide:
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 refractory materials.
Green silicon carbide:
Green silicon carbide has higher hardness and brittleness than black silicon carbide, sharp abrasive grains and good thermal conductivity. It is suitable for grinding hard and brittle materials such as cemented carbide, optical glass and ceramics.
There are many types of grinding wheels and come in various shapes and sizes. Due to the different abrasives, bond materials and manufacturing processes of the grinding wheels. Various grinding wheels have different working performance. Each type of grinding wheel has a certain scope of application according to its own characteristics. Therefore, when grinding, the appropriate grinding wheel must be selected according to the specific situation.
