Electric heating – Metal heating – By arc
Patent
1997-01-22
1999-04-27
Shaw, Clifford C.
Electric heating
Metal heating
By arc
148524, 219 7615, 228119, B23K 904
Patent
active
058978011
ABSTRACT:
An article made of a nickel-base superalloy having a nil-ductility range from the solidus temperature of the alloy to about 600.degree. F. below the solidus temperature is welded, as for example in the weld repair of surface cracks, by removing foreign matter from the area to be welded, first stress relieving the article, adjusting the temperature of the article to a welding temperature of from about 1800.degree. F. to about 2100.degree. F., welding a preselected area in an inert atmosphere at the welding temperature, and second stress relieving the article. Welding is preferably accomplished by striking an arc in the preselected area so as to locally melt the alloy in the preselected area, providing a filler metal having the same composition as the nickel-based superalloy of the article, and feeding the filler metal into the arc so that the filler metal is melted and fused with the article to form a weldment upon solidification.
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Kelly Thomas J.
Sheranko Ronald L.
Smashey Russell W.
Snyder John H.
General Electric Company
Hess Andrew C.
Narciso David L.
Shaw Clifford C.
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