Sandblasting material

aluminium oxide

aluminium oxide

1. Brown corundum abrasive, the main component is Al2O3, with medium hardness, high toughness, sharp particles, relatively low price, 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., belongs to silicon carbide abrasive, the main component is silicon carbide SiC, high hardness, brittleness, sharp abrasive grain, 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.
High grinding efficiency, wear-resisting and durable, not easy to get stuck, high surface brightness!

Abrasive hardness
The hardness of the abrasive refers to the ability of the abrasive surface to resist local external action, and the hardness of the abrasive (such as oilstone) is the firmness of the adhesive bonded abrasive under external force, which is one of the basic characteristics of the abrasive. Grinding is achieved by using the difference in hardness between the abrasive and the workpiece being ground. The higher the hardness of the abrasive, the stronger its cutting ability.
Abrasive strength
 
The strength of the abrasive refers to the firmness of the abrasive itself. That is, when the sharp edge of the abrasive grain is still quite sharp, it can withstand the applied pressure without being broken. Abrasive material with poor strength, its abrasive particles are pulverized quickly, the cutting ability is low, and the service life is short. This requires that in addition to having a higher hardness, the abrasive particles should have sufficient strength for better grinding.

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