Title:
METHOD OF PRODUCING UNITARY MULTI-ELEMENT CERAMIC CASTING CORES AND INTEGRAL CORE/SHELL SYSTEM
Document Type and Number:
WIPO Patent Application WO2005113210
Kind Code:
B1
Abstract:
A method for producing ceramic articles having a complex geometry. Temporary tooling is provided having cavities corresponding in shape to the desired ceramic article. The cavities are filled with a ceramic slurry which is solidified by freezing or gelation of a polymer. The ceramic is treated to remove the original liquid portion of the slurry and the temporary tooling is removed. The ceramic is then sintered. The ceramic article thus obtained may be used to investment cast a metal article.
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Inventors:
HOLOWCZAK JOHN E (US)
SAHM MICHAEL K (US)
SCHMIDT WAYDE R (US)
SAHM MICHAEL K (US)
SCHMIDT WAYDE R (US)
Application Number:
PCT/US2005/017671
Publication Date:
May 31, 2007
Filing Date:
May 20, 2005
Export Citation:
Assignee:
UNITED TECHNOLOGIES CORP (US)
HOLOWCZAK JOHN E (US)
SAHM MICHAEL K (US)
SCHMIDT WAYDE R (US)
HOLOWCZAK JOHN E (US)
SAHM MICHAEL K (US)
SCHMIDT WAYDE R (US)
International Classes:
B22C9/04; B22C9/02; B22C9/10; B22C9/12; B22C9/24; B22C13/00; B22D19/00; B28B1/26; B28B1/30; B28B7/00; B28B7/34; B29C45/00; F01D5/28
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