Arcuate Seed Casting Method
AssigneeRaytheon Technologies Corporation
InventorsDilip M. Shah, Shiela R. Woodard, Steven J. Bullied, Ryan C. Breneman
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Abstract
A casting method includes: forming a seed, the seed having a first end and a second end, the forming including bending a seed precursor; 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. The forming further included reducing a thickness of the seed proximate the first end relative to a thickness of the seed proximate the second end.
Claims26
A casting method comprising:
- forming a seed, the seed having a first end and a second end, the forming including bending a seed precursor;
- 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,
- the forming further comprising:
- reducing a thickness of the seed proximate the first end relative to a thickness of the seed proximate the second end.
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A casting method comprising:
- forming a seed, the seed having a first end and a second end, the forming including bending a seed precursor;
- 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,
- the forming further comprising at least one of:
- rendering a portion of the seed precursor proximate the first end less prone to stress from the bending than a portion of the seed precursor proximate the second end;
- relieving a stress in the seed proximate the first end relative to a stress in the seed proximate the second end;
- and
- removing stressed material in the seed proximate the first end relative to stressed material in the seed proximate the second end.
Dependencies are inferred from the claim text.