Nitrified bonded sol gel sintered aluminous abrasive bodies
AssigneeNorton Company
InventorsCarole J. Markhoff-Matheny, John Hay, David Rostoker
Life of this patent
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Abstract
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.
Claims29
A bonded abrasive body comprised of (i) sol gel sintered aluminous abrasive grit particles having silica-enriched surfaces and (ii) a vitrified bond.
A method of producing sintered sol gel aluminous abrasive particles having silica-enriched surfaces which comprises coating said particles with a silicon compound and heat-treating the coated particles at a sufficient temperature and for a sufficient time to convert the silicon compound to silica and to fix the silica to the surfaces.
A method of producing sintered sol gel aluminous abrasive particles having silica-enriched surfaces which comprises coating said particles with a silica material and heat-treating the coated particles at a sufficient temperature and for a sufficient time to fix the silica to the surfaces.
A method of improving the grinding performance of a vitrified-bonded sintered sol gel aluminous abrasive body which comprises coating individual sintered sol gel aluminous abrasive grit particles which are used to prepare the body with about 0.5 to about 3 weight percent of a silicon compound and heat-treating the coated particles at a sufficient temperature and for a sufficient time to fix a silica coating to the surfaces of the particles and to form silica-enriched surfaces.
Dependencies are inferred from the claim text.