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US 9,802,248 B2Granted
Castings and manufacture methods
AssigneeUnited Technologies Corporation
InventorsJohn J. Marcin, Jr., Steven J. Bullied, Dilip M. Shah, Alan D. Cetel
Life of this patent
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Abstract
A method for casting an article comprises a first region and a second region. The method comprises casting an alloy in a shell, the shell having a casting core protruding from a first metal piece; and deshelling and decoring to remove the shell and core and leave the first region formed by the first piece and the second region formed by the casted alloy.
Claims20
A method for casting an article (60;60-2) comprising a first region (82;82-2) and a second region (80;81), the method comprising:
- mating a pre-formed casting core (232) to a pre-formed first metal piece (220) so as to protrude from the first metal piece;
- forming a sacrificial pattern material around the casting core;
- shelling a combination of the first metal piece, casting core, and the sacrificial pattern material to form a shell (290);
- casting an alloy in the shell (290) with the casting core (232) protruding from the first metal piece (220);
- and
- deshelling and decoring to remove the shell and core and leave the first region formed by the first metal piece and the second region formed by the casted alloy.
3 more elements
Dependencies are inferred from the claim text.