Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1988-03-28
1989-03-07
Seidel, Richard K.
Metal founding
Process
Shaping liquid metal against a forming surface
164125, 164127, B22D 2704
Patent
active
048097640
ABSTRACT:
A long, thin article or portion of an article of an equiaxed metal is cast without providing gates along the length of a portion of a mold cavity in which the long thin portion of the article is cast. Prior to casting the article, the lower half of the long thin portion of the article mold is heated into a temperature range in which the highest temperature is close to but less than the solidus temperature of the metal of the article. Molten metal is conducted into the long thin portion of the article mold cavity at a location other than along the length of the long thin portion of the article mold cavity. During solidification of the molten metal, molten metal is simultaneously solidified along surface areas in the lower half of the long thin portion of the mold cavity and along surface areas in the upper half of the long thin portion of the mold cavity. The solidificaton of the molten metal in the lower half of the long thin portion of the mold cavity is completed prior to completion of solidification of the molten metal in the upper half of the long thin portion of the mold cavity.
REFERENCES:
patent: 3342455 (1967-09-01), Fleck et al.
patent: 3376915 (1968-04-01), Chandley
patent: 3405220 (1968-10-01), Barrow et al.
patent: 3465812 (1969-09-01), Dieters et al.
patent: 4609029 (1986-09-01), Vishnevsky
patent: 4724891 (1988-02-01), Brookes
PCC Airfoils, Inc.
Seidel Richard K.
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