Vitreous bonded sol-gel abrasive grit article
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United States of America Patent
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Mar 10, 1992
Grant Date -
N/A
app pub date -
Jan 16, 1990
filing date -
Jan 16, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There has been discovered the increased E-Modulus and grinding performance of vitreous bonded sol-gel abrasive grit abrasive articles, particularly abrasive grinding wheels, by the incorporation therein of inorganic, non-metallic bubbles. In a practice of the invention the abrasive article comprises a) an abrasive phase having sintered sol-gel alumina abrasive grits and second abrasive grits that are not of the sintered sol-gel type, b) a vitreous bond and c) essentially hollow, essentially spherical alumina particles having a softening temperature at least 50.degree. F. greater than the firing temperature of the vitreous bond.
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