Method for making a ceramic mold

Details Method for making a ceramic mold Method for making a ceramic mold

1992-11-02

1994-11-29

Lin, Kuang Y.

Metal founding

Process

Shaping a forming surface

164 35, 164516, B22C 900, B22C 904

Patent

active

053680863

ABSTRACT:
A new method for producing a composite ceramic mold for production of metal castings is disclosed. The composite mold is comprised of a backing layer and a facing layer. The backing layer is formed by pouring a mixture of a suitable refractory, a gelling agent, and a binder about an oversized pattern. After the backing layer hardens, it is fired and then baked. The facing layer is then formed integrally with the backing layer by pouring a mixture of comminuted highly refractory material, a gelling agent, and a binder between the oversized backing layer and a dimensionally-correct pattern. After the facing layer hardens, it is fired and then baked.

REFERENCES:
patent: 2748435 (1956-06-01), Hackett
patent: 2795022 (1957-06-01), Shaw
patent: 2811760 (1957-11-01), Shaw
patent: 2837798 (1958-06-01), Bleuenstein
patent: 2931081 (1960-04-01), Dunlop
patent: 3022555 (1962-02-01), Shaw
patent: 3172176 (1965-03-01), Greenwood
patent: 3511302 (1970-05-01), Barron
patent: 3692086 (1972-09-01), Michelon
patent: 4050500 (1977-09-01), Steinbacher
Literature provided by Stauffer entitled "Composite Ceramic Mold" (3 pages; incomplete; undated).
Literature provided by Stauffer entitled "Ceramic Mold" (5 pages; undated).

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