The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 2001
Filed:
Oct. 14, 1998
Stephen J. Ferrigno, Cincinnati, OH (US);
Kevin G. McAllister, West Chester, OH (US);
Seetharamaiah Mannava, Cincinnati, OH (US);
General Electric Company, Cincinnati, OH (US);
Abstract
The present invention includes a method of repairing an annular metallic article and the repaired article itself which has an axially extending annular support and a projection generally radially extending therefrom. The projection has an associated operating radial height as measured from a radially facing annular first surface of the support and an associated shape. An upper portion of the projection is removed forming a stub extending away from the first surface and having a bonding surface at a stub end spaced apart from the first surface. A metallic material is metallurgically bonded to the bonding surface forming an annular heat affected zone in the stub bounded by the bonding surface. A first portion of the metallic material is removed to restore the projection to the operating height and shape. At least one annular outer surface of the tooth extending over at least a portion of the heat affected zone is laser shock peened, preferably after the first portion of the metallic material is removed. A tip of the stub formed by the removing of the first portion of the metallic material may also be laser shock peened as may a non-heat affected zone portion of the stub extending at least a partial length of a distance from the heat affected zone to the first surface. Opposite forward and aft facing annular surfaces of the projection may be laser shock peened, preferably simultaneously. The laser beam may be fired normal to or at an oblique angle to the forward and aft facing annular surfaces.