Method and apparatus for joining new electrode to consumed elect

Industrial electric heating furnaces – Arc furnace device – Electrode

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373 94, 373100, 29705, H05B 714

Patent

active

056383983

ABSTRACT:
A new electrode is joined to a consumed electrode of the electric furnace according to a method comprising the steps of lifting and transporting the new electrode suspended from a joining apparatus by a crane, aligning both electrodes by throwing a laser beam from a projector disposed to the crane on a positioning marker disposed on a deck plate provided in the vicinity of the electric furnace, screwing a screw thread of the new electrode into a threaded hole of the consumed electrode by actuating an electric motor disposed in the joining apparatus, and tightening both electrodes at desired tightening torque by operating the motor in a stalled state with a small electric current of low frequency.

REFERENCES:
patent: 3559816 (1971-02-01), Hirata
patent: 3795753 (1974-03-01), Mori et al.
patent: 3937867 (1976-02-01), Wynne
patent: 4044199 (1977-08-01), Simon
patent: 4400815 (1983-08-01), Dunn et al.
patent: 4420838 (1983-12-01), Dunn et al.
patent: 4736384 (1988-04-01), Sakai et al.
patent: 5201112 (1993-04-01), Sevelinge

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