Ceramic casting core made by additive manufacturing
AssigneeHowmet Corporation
InventorGregory R. Frank
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Abstract
A method of making a ceramic casting core involves using additive manufacturing to form a 3D ceramic casting core that includes an outer core body surface layer that exhibits reduced chemical reactivity with the molten metal or alloy being cast, wherein the ceramic body and the outer core body layer each comprises a layer-on-layer structure in a build direction of the ceramic casting core resulting from the additive manufacturing process, such as 3D printing.
Claims28
A ceramic casting core, comprising a ceramic particulate body and an outer core layer that is disposed on the core body and comprises a different ceramic particulate material from that of the core body and exhibiting reduced reactivity to the molten metal or alloy being cast, wherein the core body and the outer core layer each comprises a layer-on-layer structure of their respective ceramic particulate materials resulting from an additive manufacturing process.
A 3D printed ceramic casting core, comprising a ceramic body that comprises a ceramic powder comprising a metal oxide and an outer core layer that comprises a rare earth oxide powder exhibiting reduced reactivity to the molten metal or alloy being cast, wherein the core body and the outer core layer each comprises a layer-on-layer structure of their respective ceramic powders resulting from a 3D printing process.
A method of making a ceramic casting core, comprising depositing a first ceramic particulate material in layer-on-layer manner on a support to form a 3D core body and depositing a second, different ceramic particulate material in layer-on-layer manner on the support to form a 3D outer core body layer wherein the different ceramic particulate material exhibits reduced reactivity to the molten metal or alloy being cast.
Dependencies are inferred from the claim text.