Abrasive tool making process – material – or composition – With inorganic material
Patent
1985-04-11
1987-09-22
Lieberman, Paul
Abrasive tool making process, material, or composition
With inorganic material
51293, 51308, B24D 302
Patent
active
046952942
ABSTRACT:
A method for reducing the particle size of an initial silicon carbide powder to a milled powder having an average particle size of below 1 micron but greater than an average of about 0.2 micron, without grinding media contamination. The method comprises milling the larger particles in a vibratory mill in the presence of sintered silicon carbide media comprising silicon carbide pellets having both curved and flat surfaces and a maximum dimension of from about 0.5 to 5 centimeters. The grinding occurs in the presence of a fluid, preferably a liquid, for a sufficient time and at a sufficient vibrational energy to obtain said milled powder having such smaller average particle size. At least 90% of the pellets in the silicon carbide media have a specific gravity (density) greater than 3.05 g/cm.sup.3.
The invention includes the unique media, which may be used for various grinding operations, and includes unique milled powders. One of the unique powders has particles which have an average length to width ratio of greater than 2.5. Another of the unique powders is black silicon carbide containing from 200 to 2,000 parts per million of aluminum in solid solution.
REFERENCES:
patent: 3100088 (1963-08-01), Podmore et al.
patent: 3268177 (1966-08-01), McKibben
patent: 3615301 (1971-10-01), Pike
patent: 3954483 (1976-05-01), Prochazka
patent: 3966855 (1976-06-01), Hollenberg et al.
patent: 4117096 (1978-09-01), Hosaka et al.
patent: 4123286 (1978-10-01), Coppola et al.
patent: 4275026 (1981-06-01), Hazel et al.
patent: 4544376 (1985-10-01), Duran
GM 78 1A 4/78 Sweco, Inc. Bulletin.
Sweco Vibro-Energy Mill Bulletin, By Southwestern Engineering Company, date unknown.
Boecker Wolfgang D. G.
Korzekwa Tadeusz M.
McMurtry Carl H.
Dunn Michael L.
Lieberman Paul
Stemcor Corporation
Thompson Willie J.
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