US Patent:
20030015308, Jan 23, 2003
Inventors:
Ken Fosaaen - Morristown TN, US
Jeffery Smith - Norton Shores MI, US
David Erny - Talbott TN, US
Robert Shay - Spring Lake MI, US
Nick Lirones - Caledonia MI, US
International Classification:
B22C009/04
B22C013/12
US Classification:
164/035000, 164/028000, 164/228000
Abstract:
Method and apparatus for making a ceramic core or fugitive pattern for use in investment casting wherein a fluid ceramic core or pattern material is introduced into a molding cavity defined by cooperating dies, and at least a region of one or both of the dies is heated during filling of the molding cavity with the material and then cooled to a lower ejection temperature before removal of a ceramic core or pattern from the molding cavity.