Forming cooling aperture(s) using electrical discharge machining

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United States of America Patent

PATENT NO 11673200
APP PUB NO 20230049453A1
SERIAL NO

17401974

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A manufacturing method is provided. During this method, a preform component is provided for a turbine engine. The preform component includes a substrate comprising electrically conductive material having an outer coating comprising non-electrically conductive material applied over a surface of the substrate. A preform aperture is formed in the preform component using an electrical discharge machining electrode. The preform aperture includes a meter section of a cooling aperture in the substrate. The preform aperture also includes a pilot hole in the outer coating. A diffuser section of the cooling aperture is formed in at least the outer coating using a second machining process.

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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
Koonankeil, James M Marlborough, US 28 123

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