Investment Casting Process for Hollow Components

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United States of America Patent

SERIAL NO

15050503

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Abstract

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An investment casting process for a hollow component such as a gas turbine blade utilizing a ceramic core (10) that is cast in a flexible mold (24) using a low pressure, vibration assisted casting process. The flexible mold is cast from a master tool (14) machined from soft metal using a relatively low precision machining process, with relatively higher precision surfaces being defined by a precision formed insert (22) incorporated into the master tool. A plurality of identical flexible molds may be formed from a single master tool in order to permit the production of ceramic cores at a desired rate with a desired degree of part-to-part precision.

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Patent Owner(s)

Patent OwnerAddress
RTX CORPORATION10 FARM SPRINGS ROAD FARMINGTON CT 06032

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Appleby, Michael Crozet, US 11 944
Burns, Andrew Longwood, US 24 217
Fraser, Iain Ruckersville, US 27 1415
Merrill, Gary Orlando, US 1 3
Paulus, John Afton, US 13 558

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