Composite core for use in precision investment casting

Composite core for use in precision investment casting

A composite core (11) for an investment casting process, the core being comprised of both a ceramic portion (12) and a refractory metal portion (13), with the refractory metal portion (13) being so disposed as to perform the function of a plurality of such refractory metal elements. In particular, a...

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Hauptverfasser: SANTELER, KEITH A, WIEDEMER, JOHN D
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CASTING
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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creator SANTELER, KEITH A
WIEDEMER, JOHN D
description A composite core (11) for an investment casting process, the core being comprised of both a ceramic portion (12) and a refractory metal portion (13), with the refractory metal portion (13) being so disposed as to perform the function of a plurality of such refractory metal elements. In particular, a refractory metal element (13) attached to a trailing edge (17) of a ceramic element (12) extends beyond the plane of a tip (16) end of the ceramic element (12) so as to replace the refractory metal element (13) otherwise extending from the ceramic tip edge. The refractory metal element (13) also extends beyond the space to be occupied by the wax casting, both in the direction of the tip end and the trailing edge such that improved placement and securing of the core is facilitated during the casting process. A further embodiment (Fig. 9) uses a single refractory metal element that extends into both the airfoil portion and an orthogonal extending platform portion thereof.
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language eng ; fre ; ger
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subjects CASTING
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
title Composite core for use in precision investment casting
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