Composition and method for forming an abrasive article

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United States of America Patent

PATENT NO 4652277
SERIAL NO

06856451

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In accordance with the present invention, a composition of matter is provided for forming a vitrified abrasive wheel having an inner core and outer rim of differing compositions wherein said outer rim contains cubic boron nitride. The composition for the preferred rim material is a mixture comprising between about 10 to 70% by weight cubic boron nitride, between about 5 to 60% alumina, and about 15 to 35% bonding medium; and the preferred core composition comprises between about 10 to 65% silicon carbide, 10 to 60% alumina, and 5 to 30% bonding medium. In another aspect, a bonding medium is provided which is compatible with cubic boron nitride and in one embodiment has an oxide composition comprising about 71% silicon dioxide, 14% by weight boron oxide, about 5% by weight aluminum oxide, and about 10% by weight sodium oxide.

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Patent Owner(s)

Patent OwnerAddress
BAY STATE/STERLING INC12 UNION STREET WESTBOROUGH MA 01581

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Makhlouf, Makhlouf M Framingham, MA 5 25
Schuster, Thomas R Grafton, MA 2 17

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