Ceramic core for investment casting and method for preparation

Details Ceramic core for investment casting and method for preparation Ceramic core for investment casting and method for preparation

1987-09-21

1990-05-15

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 3827, 106 3822, 106 389, 164516, 164518, 164522, B28B 728

Patent

active

049254928

ABSTRACT:
A fired ceramic core for use in aluminum investment casting, which will withstand steam autoclaving and which may be rendered water disruptible; comprising from about 20 to 50% by weight of one or more water soluble salts, together with inert ceramic fillers selected to meet desired thermoexpansion compatability for the shell with which said core is to be used; said core being vacuum impregnated with ethyl silicate and a cured phenolic resin.

REFERENCES:
patent: 2372236 (1945-03-01), Wainer
patent: 3407864 (1968-10-01), Anderko et al.
patent: 3548914 (1970-12-01), Hill et al.
patent: 3645491 (1972-02-01), Brown et al.
patent: 4361181 (1982-11-01), Wischnack et al.
patent: 4438804 (1984-03-01), Aiga et al.
patent: 4629708 (1986-12-01), Alexander et al.

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