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US 12,123,104 B2Granted
Arcuate seed casting method
AssigneeRtx Corporation
InventorsRyan C. Breneman, Dilip M. Shah, Steven J. Bullied, Shiela R. Woodard
Life of this patent
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Abstract
A casting method includes forming a seed. The seed has a first end and a second end. The forming includes bending a seed precursor. The seed second end is placed in contact or spaced facing relation a chill plate. The first end is contacted with molten material. The molten material is cooled and solidifies so that a crystalline structure of the seed propagates into the solidifying material. The forming further includes inserting the bent seed precursor into a sleeve leaving the bent seed precursor protruding from a first end of the sleeve.
Claims19
A casting method comprising:
- forming a seed, the seed having a first end and a second end and an inner diameter (ID) surface and an outer diameter (OD) surface;
- placing the seed second end in contact or spaced facing relation with a chill plate;
- contacting the first end with molten material;
- and
- cooling and solidifying the molten material so that a crystalline structure of the seed propagates into the solidifying material,
- wherein:
- the seed comprises at least one first piece and at least one second piece;
- the forming comprises inserting the at least one second piece into the at least one first piece, leaving the at least one second piece protruding from a first end of the at least one first piece;
- the at least one second piece contacts a shell and
- the contacting the first end with molten material contacts the molten material with the protruding at least one second piece.
7 more elements
Dependencies are inferred from the claim text.