B PERFORMING OPERATIONS; TRANSPORTING
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
B23K11/00 Resistance welding; Severing by resistance heating
B23K11/10 Spot welding; Stitch welding
B23K11/115 by means of two electrodes placed opposite one another on both sides of the welded parts