General Electric Company

Raymond Alan White

Melvin Robert Jackson

John R Hughes

Charles Gitahi Mukira

Robert Anthony Fusaro, Jr

Aaron Todd Frost

Harvey Donald Solomon

Gerald Burt Kliman

Shyh-Chin Huang

Thomas Robert Raber

Roger Neal Johnson

Joseph Eugene Miller

Wen Liang Soong

Ann Melinda Ritter

Allan Richard Susi

Paul Vincent Crimi

Don Mark Lipkin

Canan Uslu Hardwicke

Yuk-Chiu Lau

Walter Whipple

Dennis Michael Gray

Reed Roeder Corderman

Michael F Gigliotti, Jr

Steven A Miller

Paul Leonard Dupree

Daniel Anthony Nowak

Kamlesh Mundra

John Thomas Murphy

Robert E Sundell

Richard J Keck

Peter W Schilke

Harold J Jenkins

Andrew Jones, Jr

Marcus Preston Boron

Eric Russell Willis

Lyle B Speigel

Sidney Perham Young

Charles Gitah Mukira

Rosalia Marie Martinez-Brandon

Methods for repairing and manufacturing a gas turbine blade, and the gas turbine blade repaired and manufactured with such methods are presented with, for example, the repair method comprising providing a gas turbine blade, the blade comprising a blade tip and a blade body; removing at least one portion of the blade tip; providing at least one freestanding tip insert; and disposing the at least one tip insert onto the gas turbine blade body such that the at least one tip insert replaces the at least one removed portion of the blade tip.

Repair of advanced gas turbine blades

A process for welding superalloys, and particularly articles formed of gamma prime-strengthened nickel-base superalloys whose chemistries and/or microstructures differ. The process entails forming the faying surface of at least one of the articles to have a cladding layer of a filler material. The filler material may have a composition that is different from both of the articles, or the same as one of the articles. The cladding layer is machined to promote mating of the faying surfaces, after which the faying surfaces are mated and the articles welded together. After cooling, the welded assembly is free of thermally-induced cracks.

Process of welding gamma prime-strengthened nickel-base superalloys

A system and method for repairing defects such as bumper holes, cracks, freckles and inclusions, in a cast article, such as a turbine component. The system comprises a device for locating a defect in a cast article, a repair material that is disposable at a defect site, at least one heat source capable of heating the repair material and a portion of the cast article to a molten state. The method of using the system comprises locating a defect in the cast article, providing a repair material to the defect site, melting the repair material and cast article at the defect site, and cooling the molten repair material and portion of the casting article such that they resolidify and fuse together. The method may further comprise removing a portion of the cast article at the defect site, removal of excess repair material and inspecting the cast article following repair of the defect.

System and method for repairing cast articles

Methods for repairing and manufacturing a gas turbine airfoil, and the airfoil repaired and manufactured with such methods are presented with, for example, the repair method comprising providing an airfoil having specified nominal dimensions, the airfoil comprising a first material, the first material having a creep life and a fatigue life, the airfoil further comprising a leading edge section and a trailing edge section; removing at least one portion of at least one section of the airfoil to create at least one deficit of material for the airfoil relative to the specified nominal dimensions, the at least one section selected from the group consisting of the leading edge section and the trailing edge section; providing at least one insert comprising a second material, the second material having a creep life that is at least substantially equal to the creep life of the first material, and a fatigue life that is at least substantially equal to the fatigue life of the first material; and disposing the at least one insert onto the airfoil such that the at least one deficit of material is substantially eliminated.

Airfoils with improved strength and manufacture and repair thereof

An induction motor rotor comprises a rotor shaft, a rotor core, which may be solid or may include a plurality of rotor laminations, having rotor bar slots, a plurality of rotor bars extending through the rotor bar slots, and two rotor end rings brazed to the rotor bars and extending to the rotor shaft, the rotor bars and rotor end rings pre-stressing the rotor core.

High speed induction motor rotor and method of fabrication

A process for the manufacture of repair material. The repair material is ductile and readily mechanically deformed and can be used in the repair of turbine components. The process comprises providing a directionally solidified material, cold-swaging the directionally solidified material, and heat treating the cold-swaged material into the repair material. The repair material, after the steps of cold-swaging and heat treatment, comprises a microstructure that is essentially free from cracks, for repairing the turbine component. The invention also sets forth methods for repair of articles, such as turbine components, using the repair material, and a turbine component repaired using the repair material.

Manufacture of repair material and articles repaired with the material

A composition comprises cobalt; chromium; carbon; boron; zirconium; aluminum; at least one refractory material; and nickel. The composition is used as a repair material for repairing superalloy articles in a repair process.

Repair material, process of repairing using the repair material, and article repaired

Fabrication method for high speed induction motor rotor

A splice connector includes a first coupling electrically connected to a first cable or conductor and a second coupling electrically connected to a second cable or conductor. Both couplings include at least one electrically conductive spade. The second coupling engages the first coupling so that the respective spades contact each other, thereby electrically connecting the two cables or conductors. Due to its construction and mass, this connector can be used in high temperature, high-G environments.

Splice connector and method of using the same

Repair material

A method of applying a wear-resistant hardface material (alloy) to a portion of a turbine blade, typically a wear surface on a shrouded turbine blade. A thin foil of brazing alloy (which in the preferred embodiment is a nickel-based alloy) is placed over said wear surface, and a hardface alloy of a greater than desired thickness (which in the preferred embodiment is a cobalt-based alloy) is placed thereover, thereby sandwiching the foil therebetween. The wear surface, foil, and hardface material are heated for a period sufficient to melt the foil and cause bonding of the hardface alloy to the wear surface. The hardface material is thereafter machined to bring the wear surface to design tolerances. A turbine blade, and a method of rebuilding a portion of a turbine blade, are also disclosed.

Method of applying wear-resistant materials to turbine blades, and

An induction motor rotor comprises a rotor shaft (12), a rotor core (14), which may be solid (114) or may include a plurality of rotor laminations (13), having rotor bar slots (15), a plurality of rotor bars (16) extending through the rotor bar slots, and two rotor end rings (18) brazed to the rotor bars and extending to the rotor shaft, the rotor bars and rotor end rings pre-stressing the rotor core.

A hopper feeds powder underwater to a welding torch. The hopper includes a housing having a lower chamber and an integral upper chamber. An inlet joins the upper chamber for receiving powder and a pressurized carrier gas. A powder outlet joins the lower chamber for discharging the powder to the torch. A gas outlet joins the upper chamber for releasing the carrier gas. And, a control valve joins the gas outlet for selectively controlling pressure internal the housing.

Deep water powder feed hopper

The apparatus of the invention forms a sealed pocket area which excludes water or other liquid fluent directly over a portion of an angled configuration that is to be welded, where the angled configuration is created by teeing two pieces of material together at an angle and joining them by fillet welding.

Apparatus and method for making structural fillet welds

Growing community of inventors

Schenectady, NY, United States of America

Raymond Alan White