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White Fused Alumina For Bonded Abrasives

Views: 91     Author: Terry     Publish Time: 2018-06-23      Origin: SEPPE Technologies

Fused aluminum oxides are synthetic hard minerals based on α-aluminum oxide. They are produced in electric arc furnaces by electrothermal fusion at temperatures around 2000 C.     

Fused aluminum oxides show a value of 9 on the Mohs scale of hardness, placing them virtually in the same category as - and close to - diamond (Mohs 10), the hardest known substance.   Based on the very high hardness, the excellent thermal and chemical stability and a high degree of thermal shock resistance, fused aluminum oxide grits are mainly used as abrasive particles in grinding, machining, blasting, cutting operations and for the production of shaped or unshaped refractory materials.

Bonded abrasives are made of natural or synthetic abrasive grains which are bound together with a vitrified or resinoid or other bond into a mold usually in the shape of a wheel, then pressed and fired at high temperatures. Bonded abrasives, which can be made from different materials, come in thousands of shapes and sizes depending on the type needed and specific application required, such as cutting-off and grinding wheels, snagging wheels, mounted wheels, segments, honing stones, plugs, cones, etc.


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