General Electric Company

Wayne Alan Demo

Stephen Joseph Ferrigno

Bernard Patrick Bewlay

Melvin Robert Jackson

Ronald Lance Galley

Alistair Smith

John R Planchak

Ann Melinda Ritter

Dennis Joseph Dalpe

Anthony Philip Italiano

Brian Robert Graham

A method for restoring a crack formed within a turbo charger engine transition section, the method including preparing a crack in the transition section to receive a material within the crack, applying the material within the crack, and retaining structural integrity of the transition section proximate the crack while at least one of preparing the crack and applying the material.

Method, system, and computer software code for repairing a transition section of an engine

A method for restoring a length of at least one of a master rod and an articulating rod, the method including determining a length of the rod, if the rod is within an acceptable length, cleaning the rod, applying a masking material to a part of the rod to be protected, grit blasting the part of the rod not protected by the masking material, and applying a thermal spray to the part of the rod not protected by the masking material to increase the length of the rod.

Method, computer software code, and system for restoration of master and articulating rods

A preform insert for use in preventing the flow of a braze or solder material into a void in an article during a brazing or soldering operation. The insert is particularly suited to brazing techniques for repairing stator vanes of a gas turbine, though equally effective for use in the manufacture or repair of other articles, as well as soldering operations. The preform insert is composed of a refractory metal oxide powder dispersed in a polymeric solid such that the preform insert is solid yet relatively flexible. As such, the preform insert can be formed to be appropriately shaped and sized to fill a void in an article, such that the void will remain open after the brazing or soldering operation.

Braze blocking insert for liquid phase brazing operation

A method for forming integral extensions on the end of directionally oriented, superalloy articles, such as airfoil blading members or other components used in gas turbine or other turbine engines. An extension is formed directly on an article by dipping a portion or end of the article into a molten bath of a compatible alloy, followed by withdrawal of the end under controlled conditions sufficient to cause an integral extension to solidify on the article. A ceramic mold is utilized over the dipped end of the article with a mold cavity that generally defines the shape of the extension to be formed. The mold may be formed in situ, or preformed and attached to the subject article. Extensions formed by the method of this invention have a microstructure that is continuous and compatible with that of the article. Such microstructures may include epitaxial growth of the extension from the microstructure of the article. The method establishes a temperature gradient within the article during solidification that may be further controlled by auxiliary heating and/or cooling of the article and/or extension during the practice of the method.

Solidification of an article extension from a melt using a ceramic mold

An extension is formed directly on the end of an article by dipping the end into a molten bath of an alloy, followed by withdrawal of the end at a rate sufficient to form the extension. Extensions formed have a microstructure that is continuous and compatible with that of the article. Such microstructures may include epitaxial growth of the extension onto the microstructure of the article. The method establishes a temperature gradient within the article that may be controlled by heating and/or cooling the article during the practice of the method.

Method for providing an extension on an end of an article

An extension is formed directly on an article by dipping a portion or end of the article having an attached integral mandrel into a molten bath of a compatible alloy, followed by withdrawal of the end under controlled conditions sufficient to cause an integral extension to solidify on the article. A ceramic mold is utilized over the dipped end of the article and the integral mandrel with a mold cavity that generally defines the shape of the extension to be formed. The mold may be formed in situ on the mandrel, or preformed and attached to the subject article over the mandrel. The integral mandrel is melted within the mold by dipping the mandrel into the molten alloy. The mandrel acts as a buffer between the molten material and the article while permitting melting of the article end and solidification of the integral extension. Extensions formed by the method of this invention have a microstructure that is continuous and compatible with that of the article. Such microstructures may include epitaxial growth of the extension from the microstructure of the article. The method establishes a temperature gradient within the article during solidification that may be further controlled by auxiliary heating and/or cooling of the article and/or extension during the practice of the method.

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Hamilton, OH, United States of America

Wayne Alan Demo