Patent ID: 8833637
Filing Date: 2014-09-16
Classification: B23K,C25C

Abstract:
1. A live welding method for aluminum electrolytic cell overhauling under series full current, used for welding cathode soft belt, pillar buses and short-circuit buses at the bottom of the cell, the method comprising: dividing an electrolytic cell welding area into a plurality of zones at a power output side, and a plurality of zones at a power input side, using different guiding-current methods upon welding at the power output side and the power input side, serial currents being guided through all of the pillar buses and short-circuit buses at the bottom of the cell and an inter-cell standby bus; during the welding of a zone, cutting off currents of short-circuit buses at the bottom of the cell and pillar buses which influence a magnetic field intensity of the zone, guiding the currents of the serial currents passing through said short-circuit buses at the bottom of the cell and pillar buses to the pillar buses, short-circuit buses at the bottom of the cell and an inter-cell standby bus of other zones not to be welded, such that the magnetic field intensity at the zone to be welded is lowered to the extent that welding can be performed, and then using a welding machine to perform welding.