Norton Company

John Hay

Carole J Markhoff-Matheny

David Rostoker

George E Foster

Brian E Swanson

Leonard I Smith

Vitrified bonded abrasive bodies prepared from sol gel sintered aluminous grit particles and a vitreous (glass) bond exhibit improved abrasive performance by treating the surfaces of the grit particles so as to give them silica-enriched surfaces.

Vitrified bonded sol gel sintered aluminous abrasive bodies

Nitrified bonded sol gel sintered aluminous abrasive bodies

A grinding wheel is disclosed which is made up of sintered aluminous abrasive and a vitrified bond, the vitrified bond being a frit. A large portion of the sintered aluminous abrasive may be replaced by a non-sintered abrasive and the bond may include fillers and/or grinding aids.

Frit bonded abrasive wheel

A method for making grinding wheels having an annular grinding section mounted on a central hub in which a slurry of abrasive particles and ceramic bond is coated on a pre-formed core, shaped, and fired. Method has particular advantage in formation of wide wheels and contoured wheels. Premium abrasive may be employed in the wheels.

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Shrewsbury, MA, United States of America

John Hay