Investment casting utilizing flexible wax pattern tool for supporting a ceramic core along its length during wax injection

a technology of flexible wax pattern and ceramic core, which is applied in the field of investment casting, can solve the problems of not being able to survive in the surface of wax during subsequent handling, and achieve the effect of reducing the incidence of damage or movement of the cor
US20130333855A1Inactive Publication Date: 2013-12-19MIKRO SYSYTEMS INC +1
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
MIKRO SYSYTEMS INC
Publication Date
2013-12-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

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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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation-in-part of co-pending application Ser. No. 12 / 961,740 filed 7 Dec. 2010 (attorney docket 2010P13199US), which in turn claimed benefit of the 8 Dec. 2009 filing date of U.S. provisional application No. 61 / 267,519 (attorney docket 2009P22785US).FIELD OF THE INVENTION

[0002] This invention relates generally to the field of investment casting, and more particularly, to using a flexible tool or mold to form a wax pattern as part of an investment casting process.BACKGROUND OF THE INVENTION

[0003] Investment casting is one of the oldest known metal-forming processes, dating back thousands of years to when it was first used to produce detailed artwork from metals such as copper, bronze and gold. Industrial investment castings became more common in the 1940's when World War II increased the demand for precisely dimensioned parts formed of specialized metal alloys. Today, investment casting is commonly used in the aer...

Claims

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