Alan J Silvia

US Patent:

20090126838, May 21, 2009

Filed:

Nov 16, 2007

Appl. No.:

11/941149

Inventors:

Alan Joseph Silvia - Clifton Park NY, US
Jeffrey Michael Breznak - Waterford NY, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

C21D 1/18
C21D 1/56
C21D 1/613
C21D 1/60
C21D 1/667
C21D 9/00

US Classification:

148660, 148559

Abstract:

Heat treatment processes for hardening a workpiece such as a turbine blade include attaching a spacer to a workpiece surface, wherein the spacer comprises an inner profile mirroring the workpiece surface and an outer profile effective to generally uniformly distribute heat to the workpiece surface, heating the spacer to uniformly heat the workpiece surface at a temperature effective to form an austenitic microstructure in the workpiece surface, cooling the workpiece surface at a rate effective to transform the austenitic microstructure to a martensitic microstructure, and removing the spacer from the workpiece prior to or subsequent to cooling.

US Patent:

20100326962, Dec 30, 2010

Filed:

Jun 24, 2009

Appl. No.:

12/491158

Inventors:

Eklavya Calla - Bangalore, IN
Sandip Maity - Bangalore, IN
Umakant Damodar Rapol - Bangalore, IN
Alan Joseph Silvia - Clifton Park NY, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

B23K 9/04

US Classification:

219 7614, 219 761

Abstract:

In one embodiment, a system includes a welding controller configured to receive images from multiple observation points directed toward a deposition zone. The welding controller is also configured to control a parameter affecting deposition based on a differential analysis of the images.

US Patent:

20110198318, Aug 18, 2011

Filed:

Feb 12, 2010

Appl. No.:

12/704866

Inventors:

Alan Joseph Silvia - Clifton Park NY, US
William Edward Babcock - Broadalbin NY, US
Swami Ganesh - Clifton Park NY, US
Jonathan T. Salkin - Harrisburg PA, US
Robin Carl Schwant - Pattersonville NY, US
Lyle B. Spiegel - Niskayuna NY, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

B23K 9/16

US Classification:

219 75

Abstract:

Embodiments of the invention relate generally to welding methods and, more particularly, to methods for welding in a horizontal position and a joint structure suitable for such methods. In one embodiment, the invention provides a method of forming a welded joint between two components, the method comprising: aligning a first and second component to form a joint therebetween, the joint comprising: a protrusion of the first component, and a recess of the second component, wherein the protrusion and recess have complimentary shapes; orienting the first and second components such that a major axis of each is oriented vertically; and welding the first and second components at a substantially horizontally-oriented root opening, the substantially horizontally-oriented root opening positioned along the joint.

US Patent:

20110305506, Dec 15, 2011

Filed:

Jun 9, 2010

Appl. No.:

12/797130

Inventors:

Steven Louis Breitenbach - Scotia NY, US
William Edward Babcock - Broadalbin NY, US
Alan Joseph Silvia - Clifton Park NY, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

F16B 11/00
B23K 31/02
B23K 103/04

US Classification:

403272, 228226

Abstract:

A weld joint includes low and high alloy steel components. A weld bead between the low and high alloy steel components includes a first weld wire in contact with the low alloy steel component, a second weld wire in contact with the high alloy steel component, and a third weld wire between the first and second weld wires. The third weld wire has a higher percentage of chromium than the first weld wire and a lower percentage of chromium than the second weld wire. A method for welding includes applying a first weld wire to a low alloy steel component, applying a second weld wire to a high alloy steel component, and applying a third weld wire between the first and second weld wires. The third weld wire has a higher percentage of chromium than the first weld wire and a lower percentage of chromium than the second weld wire.

US Patent:

20130015171, Jan 17, 2013

Filed:

Jul 11, 2011

Appl. No.:

13/179749

Inventors:

Steven Louis Breitenbach - Scotia NY, US
William Edward Babcock - Broadalbin NY, US
Jonathan Tropp Salkin - Harrisburg PA, US
Alan Silvia - Clifton Park NY, US
Andrew Batton Witney - Schenectady NY, US

Assignee:

GENERAL ELECTRIC COMPANY - Schenectady NY

International Classification:

B23K 9/32

US Classification:

219136

Abstract:

A dual-torch welding system is disclosed. In one embodiment, the welding system includes a pair of torches positioned in an other than opposing arrangement to weld a substantially circular component therebetween, and a means for rotating the substantially circular component and the pair of torches relative to one another, allowing welding of the substantially circular component by the pair of torches.