INVESTMENT CASTING PROCESS FOR HOLLOW COMPONENTS

INVESTMENT CASTING PROCESS FOR HOLLOW COMPONENTS

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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PAULUS, John, R, BURNS, Andrew, J, APPLEBY, Michael, P, FRASER, Iain, A, MERRILL, Gary, B
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CASTING
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Beschreibung
Zusammenfassung: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.