B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
B23K9/00—Arc welding or cutting
B23K9/16—Arc welding or cutting making use of shielding gas
B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
B23K9/1735—Arc welding or cutting making use of shielding gas and of a consumable electrode making use of several electrodes
