Production of plaster molds by microwave treatment

Details Production of plaster molds by microwave treatment Production of plaster molds by microwave treatment

1977-03-22

1978-11-21

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

164 45, 164250, 264 86, H05B 900

Patent

active

041266510

ABSTRACT:
Metal casting components, e.g. molds and cores, are produced from a compacted mass of plaster by microwave treatment while shielded by a heat insulating medium, e.g. glass fiber matting, which freely transmits microwave radiation as well as water vapor and steam. A casting component dried by this method is completely calcined, and the resulting component will promote cast reproduction of its surface pattern with maximum fidelity of detail.

REFERENCES:
patent: 3585258 (1971-06-01), Levinson
patent: 3732048 (1973-05-01), Guerga et al.

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