Ceramic core for casting a turbine blade

Details Ceramic core for casting a turbine blade Ceramic core for casting a turbine blade

1996-10-28

1998-10-13

Davis, Robert

Static molds

Including destructible feature

29889721, 164369, 249184, B29C 3376

Patent

active

058207740

ABSTRACT:
The internally air cooled turbine cast blade is molded with a ceramic core for defining the interior cavity with coolant passages where the ceramic core is configured to fair radially inwardly at the attachment portion of the blade until they form a single wall, parallel to and centered in the blade attachment. The blade is cast in the mold by pouring molten metal into the mold, curing and the core is leached once the metal is cured and the mold removed. Another embodiment includes a metering plate attached to the root of the blade for metering coolant to provide a coolant to gas flow ratio at the film cooling holes.

REFERENCES:
patent: 2972805 (1961-02-01), Hignett et al.
patent: 4010531 (1977-03-01), Andersen et al.
patent: 4627480 (1986-12-01), Lee
patent: 4820123 (1989-04-01), Hall
patent: 5243759 (1993-09-01), Brown et al.
patent: 5337805 (1994-08-01), Green et al.
patent: 5599166 (1997-02-01), Deptowicz et al.

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