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Bonded abrasives are usually held in a matrix or bond. Bond types are may be glass (vitrified bonds), metal or organic such as polymers, rubber and shellac Diamond, cubic boron nitride, silicon carbide and fused alumina are common grains used in bonded abrasive products. For bonded abrasives, normally segments of the abrasive materials are manufactured and these are then further attached to a supporting body. Most grinding wheels employ bonded abrasives. As the permutations of abrasive type, particle size, bond, wheel body size and type are vast, there is an enormous range of grinding wheels produced by manufacturers. However, along with the abrasives application of improving, the grinding effictiveness of bonded abrasives is attented by the more and more users, instead of its grinding service of life. replica omega