Vacuum arc melting and casting furnace with a vacuum chamber and

Details Vacuum arc melting and casting furnace with a vacuum chamber and Vacuum arc melting and casting furnace with a vacuum chamber and

1982-10-18

1984-05-22

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

Ingot remelting

373 72, 373102, F27D 1108

Patent

active

044505701

ABSTRACT:
The invention concerns a vacuum arc melting and casting furnace comprising a vacuum chamber, a tilting crucible and a current connection leading to the bottom of the tilting crucible. This current connection consists of a fixed contact and of a co-operating contact arranged on the bottom of the crucible and movable with the tilting crucible. Also provided is an electrode rod for holding an electrode concentrically in relation to the tilting crucible.
The fixed contact is secured on at least two current conductors which are substantially coaxial with the electrode rod or electrode. These conductors pass through the vacuum chamber from the top and extend past the tilting crucible, and their distance apart is such that the crucible can be tilted between them into the casting position.

REFERENCES:
patent: 2789152 (1957-04-01), Ham et al.
patent: 2958719 (1960-11-01), Beecher
patent: 4262159 (1981-04-01), Grof et al.

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