Industrial electric heating furnaces – Arc furnace device – Electrode
Patent
1996-10-09
1998-05-26
Hoang, Tu B.
Industrial electric heating furnaces
Arc furnace device
Electrode
373 94, 373100, 29705, H05B 714
Patent
active
057578419
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.
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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
patent: 5638398 (1997-06-01), Ikitsu et al.
Amano Hajime
Ikitsu Yasuaki
Kamei Nobuyuki
Okamoto Tetsuo
Daido Tokushuko Kabushiki Kaisha
Hoang Tu B.
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