METHODS FOR SAND CORE GAS EVACUATION AND RELATED SYSTEMS AND APPARATUS

Methods, systems, and apparatus for reduction of gas pressure within a core, such as a sand casting core package, during a casting process in order to reduce bubble defects. Some embodiments may comprise a mold configured to receive a molten metal to create a metal casting, such as an engine block c...

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Hauptverfasser:	GOETTSCH DAVID D, FITCH STEPHEN M, COGAN CHRISTOPHER D, SINGER JAMES T, MEYER MAURICE G
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES FOUNDRY MOULDING PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING
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creator	GOETTSCH DAVID D FITCH STEPHEN M COGAN CHRISTOPHER D SINGER JAMES T MEYER MAURICE G
description	Methods, systems, and apparatus for reduction of gas pressure within a core, such as a sand casting core package, during a casting process in order to reduce bubble defects. Some embodiments may comprise a mold configured to receive a molten metal to create a metal casting, such as an engine block casting. The mold may comprise a mold core configured to create a cavity within the metal casting. The system may further comprise a filling device configured for delivering a molten metal into the mold for creating the metal casting. The mold core may comprise a material that is permeable to certain gases known to often result in bubble defects. The system may further comprise a vacuum configured to be coupled with the mold to reduce gas pressure within a permeable portion of the mold in order to reduce the incidence of bubble defects within the casting.
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subjects	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES FOUNDRY MOULDING PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING
title	METHODS FOR SAND CORE GAS EVACUATION AND RELATED SYSTEMS AND APPARATUS
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