Classification of abrasives

- Dec 11, 2018 -

Abrasives are sharp, hard materials used to grind the surface of softer materials. There are two kinds of abrasives: natural abrasives and artificial abrasives.According to hardness, there are two kinds of abrasives: superhard abrasives and ordinary abrasives. Abrasives range from softer household detergents, gemstone abrasives to the hardest material, diamonds.Abrasives are essential for making every precision product.

Artificial abrasives include corundum abrasives and silicon carbide abrasives, which are basically the following:

1、Brown corundum abrasive, the main component is Al2O3, with medium hardness, high toughness, sharp particles and low price. It is suitable for processing high tensile strength metals. Microcrystalline corundum abrasives and black corundum abrasives are all derived varieties.

2、white corundum abrasive, its hardness is slightly higher than brown corundum, but the toughness is poor, easy to cut into the workpiece during grinding, self-sharpness, less heat, strong grinding ability, high efficiency. Chrome corundum abrasive is a derivative of its origin.

3, single crystal corundum abrasive, the particles are composed of a single crystal, and has a good multi-edge cutting edge, high hardness and toughness, strong grinding ability, less heat generation, the disadvantage is higher production costs, production Lower, so the price is higher. Zirconium corundum abrasive is also a crystalline compound with a slightly lower hardness, a finer crystal size and better wear resistance.

4. Black silicon carbide abrasive, green silicon carbide abrasive, cubic silicon carbide abrasive, silicon carbide abrasive, etc., belonging to silicon carbide abrasive, the main component is silicon carbide SiC, high hardness, brittleness, sharp abrasive grain and good thermal conductivity. Strong wear resistance, suitable for processing hard and brittle metal and non-metal products.

Suitable for surface deburring, chamfering, descaling and surface polishing of mechanical, electronic, metal parts, hardware, tools, auto parts, instrumentation, casting, medical, craft jewelry and other industries.

Natural abrasives: quartz sand, garnet, natural corundum and diamond.