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US 9,174,271 B2Granted
Casting system for investment casting process
AssigneeUnited Technologies Corporation
InventorsKirk C. Newton, Alan D. Cetel, Mario P. Bochiechio, James T. Beals, John Joseph Marcin
Life of this patent
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Abstract
A casting system includes a core and a shell positioned relative to the core. A barrier coating is applied on at least one of the core and the shell, and may be applied to both the core and the shell. The barrier coating limits reaction between the casting system and a casting alloy.
Claims20
An investment casting system, comprising:
- a core that is made of a ceramic material;
- a shell positioned relative to said core, said shell including a shell layer formed by slurry dipping;
- and
- a barrier coating applied to each of said core and said shell, wherein an entire outer surface of said core is coated with said barrier coating.
1 more element
A method of providing a casting system for an investment casting process, comprising the steps of:
- a) coating an entire outer surface of each of a shell and a core of the casting system for use in the investment casting process with a barrier coating, the shell including a shell layer formed by slurry dipping.
An investment casting system, comprising:
- a core;
- a shell positioned relative to said core, said shell including a shell layer formed by slurry dipping;
- and
- a barrier coating applied to each of said core and said shell, wherein said barrier coating includes erbia and is applied to an entire outer surface of said core and said shell.
1 more element
Dependencies are inferred from the claim text.