INVESTMENT CASTING UTILIZING FLEXIBLE WAX PATTERN TOOL FOR SUPPORTING A CERAMIC CORE ALONG ITS LENGTH DURING WAX INJECTION
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May 3, 2013
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Dec 7, 2010
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An investment casting process wherein the wax pattern tool (42) is flexible to provide compliant support for an enclosed ceramic core (10) and to facilitate removal of the tool from the cast wax pattern (52) even when the cast shape would otherwise require multiple pull planes. Positioning pins (106) may extend from the flexible tool to make compliant contact against the core during the wax injection step. The pins may cooperate with a pedestal (128) formed on the core to support the core along multiple axes during wax injection, thereby allowing a higher wax injection pressure without damage to the core.
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