Bonded abrasive products containing sintered sol gel alumina abrasive filaments
AssigneeNorton Company
InventorsPaul W. Kalinowski, Muni S. Ramakrishnan, Charles V. Rue, David A. Sheldon, Brian E. Swanson
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Abstract
Resinoid and vitrified bonded abrasive products containing filament shaped sintered alumina based abrasive made up predominantly of fine alpha alumina crystals.
Claims31
A bonded abrasive product comprised of a sintered sol gel alumina based filament shaped abrasive and a bond therefor wherein said filament shaped abrasive has a substantially uniform cross-section, an average aspect ratio of greater than about 1.0, a hardness of at least 16 GPa, and is comprised predominantly of alpha alumina crystals having a size of less than about 2 microns.
A bonded abrasive product comprising a sintered sol-gel filament shaped alumina abrasive particle and a bond therefor, wherein the particle has a hardness of at least 18 GPa, a substantially uniform cross-section and a largest cross-section dimension of not more than 2 mm, an aspect ratio of at least 1:1 and is comprised at least 95% by weight of alpha alumina crystallites having a size of 1 micron or less.
A bonded abrasive product comprising a sintered sol-gel filament shaped alumina particle and a bond therefor, wherein the particle has a hardness of at least 18 GPa, a substantially uniform cross-section and a largest cross-sectional dimension of not more than 0.5 mm, an aspect ratio of from 2 to 8 and is at least 95% by weight comprised of alpha alumina crystallites having a size of 0.4 micron or less, is essentially free of glassy components and has a breaking strength of at least 10,000 kg/cm.sup.2.
Dependencies are inferred from the claim text.