Spar type consumable electrodes for vacuum arc melting of zircon

Details Spar type consumable electrodes for vacuum arc melting of zircon Spar type consumable electrodes for vacuum arc melting of zircon

1983-10-13

1985-09-03

Pellinen, A. D.

Industrial electric heating furnaces

Arc furnace device

Ingot remelting

2191461, 373 88, H05B 707

Patent

active

045396884

ABSTRACT:
This is an electrode for consumable arc melting of zirconium and titanium alloys containing a low melting point alloy constituent. The electrode uses a low resistance spar extending substantially the length of the electrode and being substantially free of any unalloyed low melting point alloy constituent. The external member containing unalloyed low melting point constituent is attached to the spar member in a manner to provide a relatively high resistance through the external member in an axial direction of the electrode. During operation, this minimizes resistance heating of the external member away from the arc and thus premature melting of unalloyed low melting point constituent is generally avoided.

REFERENCES:
patent: 1088296 (1914-02-01), Richards
patent: 2043855 (1936-06-01), Keller
patent: 2319977 (1942-05-01), Cape et al.
patent: 2973428 (1968-02-01), Pfeiffer et al.
patent: 3030706 (1962-04-01), Griffiths et al.
patent: 3400206 (1968-09-01), Barth
patent: 3565602 (1971-02-01), Konisi et al.
patent: 3850226 (1974-11-01), Cadden et al.

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