Investment cast article and method of production thereof

A method for manufacturing an investment cast article (250) is disclosed. The method comprises positioning (621) an insert (210) relative to a sacrificial form (225), the insert (210) comprising a first portion (215) and a second portion (220), the first portion (215) being disposed inside the sacri...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: GRAHAM, STEPHEN D, SEXTON, BRENDAN FRANCIS
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A method for manufacturing an investment cast article (250) is disclosed. The method comprises positioning (621) an insert (210) relative to a sacrificial form (225), the insert (210) comprising a first portion (215) and a second portion (220), the first portion (215) being disposed inside the sacrificial form (225) and the second portion (220) being disposed outside the sacrificial form (225). The sacrificial form (225) and the second portion (220) of the insert (210) are coated (630) with a material, forming a shell (230) surrounding the sacrificial form (225) and the second portion (220) of the insert (210). The sacrificial form (225) is evacuated (635) from the shell (230), followed by introducing (640) molten metal into the evacuated shell (230), thereby providing a metal form, and resulting in the first portion (215) of the insert (210) being disposed and bonded inside the metal form. The shell (230) is removed (645) from the metal form (240) and the second portion (220) of the insert (210), thereby resulting in the metal form (240) with the first portion (215) of the insert (210) disposed and bonded therein.