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Abstract

A method is provided that produces grinding wheels which exhibit improved burn reduction or prevention, lower power consumption and increased penetration of metalworking fluid into the grinding zone in high metal removal rate grinding operations such as for example creep feed grinding. The method comprises the steps of preparing a blend, cold pressing the blend in a mold to the desired shape, size and density to form a cold molded article, removing the cold molded article from the mold and firing the cold molded article to produce the vitreous bonded abrasive article wherein the blend comprises aluminum oxide abrasive grains, non-metallic, inorganic, thermally conductive, solid particles having higher thermal conductivity than the abrasive grains and a particle size at least twice that of the abrasive grains, a vitreous matrix precursor which forms a vitreous matrix having a bond with the thermally conductive, solid particles that is weaker than the bond with the abrasive grains and an organic, open cell producing, solid pore inducer that produces spring back of the cold molded article (i.e. green molding) that is at least equal to the smallest particle size of the article size range of the pore inducer.

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First Claim