Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Mica particles
Patent
1978-03-23
1979-11-13
White, Robert F.
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
Mica particles
264120, 264122, B22F 316
Patent
active
041743644
ABSTRACT:
A process for manufacture of porous metal objects particularly for making porous metal molds for use in the casting of ceramic objects. A mixture of aluminum powder and vegetable or animal ash is subjected to cold molding, followed by heating it in an oven to the softening temperature of the aluminum powder and subsequently hot molding of said mixture.
REFERENCES:
patent: 2810182 (1957-10-01), Brandes
patent: 2979401 (1961-04-01), Szymaszek
patent: 2994917 (1961-08-01), Fritsch
patent: 3250838 (1966-05-01), Bartoszak
Groff, Jr. Emory L.
Hall James R.
White Robert F.
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