Allison Engine Company, Inc.

Gm Global Technolgoy Operations, Inc.

James Paul Hoff

Donald J Frasier

Kurt F O'Connor

Ralph E Peeler

Heidi Mueller-Largent

John Henry Lane

Floyd Freeman Trees

James Rodney Whetstone

Ralph Edward Jeffries

Disclosed is a single-cast, thin wall structure capable of withstanding impinging gases at temperatures of 4300&deg; F. and higher, and method of making the same.

Single-cast, high-temperature, thin wall structures

A single-cast, thin wall structure capable of withstanding impinging gases at temperatures of 4300.degree. F. and higher, and method of making the same.

Single-cast, high-temperature, thin wall structures and methods of

The present invention relates to a method and apparatus for producing a cast structure. In one embodiment of the present invention an alloy casting mold has molten alloy injected therein to facilitate completely filling a part cavity within the mold. Further, an alloy charge pressure control device is utilized to reduce the charge pressure of the molten alloy during its injection into the mold cavity to minimize distortion and creep of the ceramic shell. In one form of the present invention the charge pressure control device removes excess alloy so as to reduce the head pressure of the molten alloy thereby eliminating the undesirable creep of the ceramic shell.

Method and apparatus for producing cast structures

A gas turbine component that includes a very thin wall. The gas turbine component being of a single-piece, single-cast structure. In one form of the gas turbine component it is formed of a superalloy composition and is capable of withstanding gases impinging upon the walls at temperatures greater than 4000.degree. F.

Single-cast, high-temperature thin wall gas turbine component

Disclosed is a single-cast, thin wall structure capable of withstanding impinging gases at temperatures of 4300.degree. F. and higher, and method of making the same. Using a bleed line of the instant invention allows for a decreasing metal pressure with respect to time which prevents any damage to the thin outer mold wall.

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Greenfield, IN, United States of America

James Paul Hoff