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AssigneeGeneral Electric Company
InventorsMartin Kin-Fei Lee, George Gerald Gunn, James Michael Placko
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A mold for molding a core for use in casting hollow parts includes, a lower mold portion and an upper mold portion defining therein a cavity corresponding to the outer surface of the core The lower mold portion includes a cutout disposed along a parting line defined between the lower mold portion and the upper mold portion and opening onto the cavity After introduction of a ceramic slurry mixture into the mold the upper mold portion is removable, to expose a first side of the core and a protective flash formed in the cutout Desirably, a heat shield is positioned over the protective flash and the exposed portion of the parting line of the lower mold portion so that the lower mold portion is not exposed directly to a flame during a preliminary firing to impart sufficient strength to the ceramic core so that the ceramic core may be handled. Providing the core with a protective flash allows the mold to be advantageously fabricated by rapid tooling technique such as by a stereolithography process from a plastic material.
An apparatus for molding a core for use in casting a hollow part, the apparatus comprising:
An apparatus for molding a core for use in casting a hollow part, the apparatus comprising:
A method for molding a core for use in casting hollow parts, the method comprising:
A method for molding a core for use in casting hollow parts, the method comprising:
Dependencies are inferred from the claim text.