Ceramic shell mold

Details Ceramic shell mold Ceramic shell mold

1978-03-20

1980-04-08

Baldwin, Robert D.

Metal founding

Process

Shaping a forming surface

249 3822, 164 25, 164138, 164 41, 106 3827, 106 65, 249134, B22C 904, B22C 118

Patent

active

041967690

ABSTRACT:
Method for making a novel shell mold for use in directional solidification and for casting alloys containing reactive components, wherein a binder comprising a fibrous colloidal alumina in aqueous dispersion and being essentially free of silica, is employed. The resultant shell mold is particularly suitable for the casting of nickel and cobalt based alloys containing relatively reactive constituents such as zirconium, alumina and titanium.

REFERENCES:
patent: 2239530 (1941-04-01), Langenohl et al.
patent: 3166808 (1965-01-01), Moore
patent: 3445250 (1969-05-01), Preece
patent: 3534803 (1967-04-01), Bickerdike
patent: 3654984 (1972-04-01), Mellen, Jr. et al.
patent: 3752689 (1973-08-01), Moore, Jr.
patent: 3933190 (1976-01-01), Fassler et al.
patent: 3935023 (1976-01-01), Derolf

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