Metal working – Method of mechanical manufacture – Impeller making
Reexamination Certificate
2006-12-12
2006-12-12
Jimenez, Marc (Department: 3726)
Metal working
Method of mechanical manufacture
Impeller making
C029S402110, C029S402130, C029S402160
Reexamination Certificate
active
07146725
ABSTRACT:
A method of repairing a combustion turbine component having damage located at or near a cooling hole or hollow or geometrically complex portion of the component is provided. The method comprises forming a preparatory groove that extends from a surface of the component to the damaged area but does not extend to the cooling hole or hollow or geometrically complex portion of the component, the groove extending 40–90% the distance from the component to the damaged area; spraying a filler material into the groove with a micro-plasma torch at a current of less than 50 amperes; and filling the groove with the filler material such that the heated filler material substantially extends from the cooling hole or hollow or geometrically complex portion of the component to a surface of the component.
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Sermatech International Incorporated, Turbine Life Cycle Support Services/Steam Turbines, Sermatech Website : Steam Turbine Repair (www.lehrprecision.com/repair—steam), 1 page.
Ditzel Peter J.
Kottilingam Srikanth C.
Jimenez Marc
Siemens Power Generation, Inc.
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