Electric heating – Metal heating – By arc
Patent
1986-01-02
1989-10-10
Walberg, Teresa J.
Electric heating
Metal heating
By arc
2191379, 2191372, B23K 1130
Patent
active
048734195
ABSTRACT:
Apparatus for weld build-up on a surface of revolution consists of an elongated, rotatable assembly that supports, at one end, an electrical welding torch terminating in a nozzle, the rotatable assembly introducing electrical welding current, inert gas, and welding wire to the torch, and including an electrically conductive, hollow, metal drive spindle. The drive spindle applies driving motion and conducts electrical current for transmission to the torch, and the gas and welding wire pass through the spindle to the torch. Also, an electrically conductive carrier is mounted in a radially adjustable, electrically continuous, offset relationship to a conductive body joined to the end of a spindle, and a torch is held in electrically conductive relationship by the carrier, the electrically conductive body and carrier together defining a gas tight passage extending from the spindle to the torch, a connection cavity being defined at a motion interface between the carrier and the body to maintain gas flow continuity therebetween over their range of offset adjustment. A method for weld build up on a surface of revolution is also described.
REFERENCES:
patent: 2880305 (1959-03-01), Baird
patent: 3248515 (1966-04-01), Gorman et al.
patent: 3815807 (1974-06-01), Bartley
patent: 4015086 (1977-03-01), Thatcher
patent: 4242987 (1981-01-01), Bernard et al.
patent: 4527039 (1985-07-01), Fuwesi
patent: 4550235 (1985-10-01), Fuwesi
Bacha, F. T., "Welding of Small Diameter Deep-Drilled Holes in Copper-Nickel," Welding Journel, Jan. 1978.
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