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US 11,235,378 B2Granted
Additively manufactured casting core-shell hybrid mold and ceramic shell
AssigneeGeneral Electric Company
InventorsXi Yang, Michael Cole, Michael Brown, Gregory Terrence Garay, Tingfan Pang, Brian David Przeslawski, Douglas Gerard Konitzer
Life of this patent
Estimating the term…
Abstract
Integrated core-shell investment casting molds include a filament structure corresponding to a cooling hole pattern in the surface of the turbine blade, stator vane, or shroud.
Claims20
A ceramic casting mold comprising:
- a ceramic core portion, a first ceramic shell portion comprising a first ceramic material, a ceramic cover, and a second ceramic shell portion comprising a second ceramic material at least partially covering the first ceramic shell portion and the ceramic cover,
- wherein the ceramic casting mold further comprises at least one cavity between the ceramic core portion and the first ceramic shell portion, the at least one cavity adapted to define a shape of a cast component upon casting and removal of the ceramic casting mold,
- wherein the ceramic casting mold further comprises a plurality of filaments joining the ceramic core portion and the first ceramic shell portion, the plurality of filaments, the ceramic core portion and the first ceramic shell portion formed using an additive manufacturing process, where each of the plurality of filaments is monolithically formed with the ceramic core portion and the first ceramic shell portion and spans between the ceramic core and first ceramic shell portion, the plurality of filaments adapted to define a plurality of holes providing fluid communication between a cavity within the cast component defined by the ceramic core portion and an outer surface of the cast component upon removal of the ceramic casting mold.
Dependencies are inferred from the claim text.