Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1996-06-27
1997-10-07
Batten, Jr., J. Reed
Metal founding
Process
Shaping liquid metal against a forming surface
298891, 148404, 164 921, 164 98, 1641221, B22D 1910, B22D 2306
Patent
active
056737459
ABSTRACT:
An extension is formed directly on an article by melting a compatible alloy preform within a ceramic mold, followed by cooling of the end under controlled conditions sufficient to cause an integral extension to solidify on the article. A ceramic mold is attached on the end of the article with a mold cavity that generally defines the shape of the extension to be formed. The mold may be formed in situ on a removable mandrel, or preformed and attached to the subject article. Extensions formed by the method of this invention have a microstructure that is continuous and compatible with that of the article. Such microstructures may include epitaxial growth of the extension from the microstructure of the article. The method establishes a temperature gradient within the article during solidification that may be further controlled by auxiliary heating and/or cooling of the article and/or extension during the practice of the method.
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Bewlay Bernard Patrick
Jackson Melvin Robert
Ritter Ann Melinda
Batten, Jr. J. Reed
Cusick Ernest G.
General Electric Company
Pittman William H.
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