Industrial electric heating furnaces – Arc furnace device – Electrode
Patent
1985-10-31
1987-03-03
Envall, Jr., Roy N.
Industrial electric heating furnaces
Arc furnace device
Electrode
H05B 7085
Patent
active
046480978
ABSTRACT:
An electrode for an electric arc furnace includes a cooled metal sheath covered with a refractory protective jacket. A plurality of refractory anchors are fixed to the exterior of the sheath, and the anchors are spaced from each other. The protective jacket includes an undercoat on the exterior of the sheath and a protective layer over the undercoat and extending between the anchors. The protective layer is formed of a refractory material such that, at the operating temperature of the electrode, the protective layer has an inner zone which is thermoplastic and an outer zone which is rigid or which is a high-viscosity melting phase.
REFERENCES:
patent: 4446561 (1984-05-01), Zollner et al.
patent: 4451926 (1984-05-01), Hogg, Jr. et al.
patent: 4462104 (1984-07-01), Zollner et al.
patent: 4466105 (1984-08-01), Bauer et al.
"Stahl und Eisen 104" (1984), No. 1, pp. 33-36.
Gelsdorf Gunter
Hlawatschek Hartmut
Leistner Hans
Didier-Werke AG
Envall Jr. Roy N.
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