Method for making molds

Details Method for making molds Method for making molds

1981-02-24

1985-05-21

Godici, Nicholas P.

Metal founding

Process

Shaping a forming surface

164 6, 164 15, B22C 122, B22C 900

Patent

active

045180318

ABSTRACT:
A method for making a mold employing a flexible pattern and a microwave radiation. A flexible pattern is formed with a material which allows microwave to pass therethrough and which pattern is then coated with a liquid facing agent, including a dielectric material to the microwave, a thermosetting resin, and refractory material powders, by either dipping or spraying. The coated pattern is covered by a molding material, including a thermosetting resin and a dielectric material to the microwave, and then the molding material covered pattern is exposed to a microwave radiation for a time sufficient to harden the molding material, and finally the pattern is separated from the hardened molding material leaving a facing agent covered mold behind.

REFERENCES:
patent: 3993620 (1976-11-01), Yamanishi
patent: 4126651 (1978-11-01), Valentine
Transactions of the American Foundrymen's Society, vol. 90, (1982), pp. 445-453.

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