METHOD AND APPARATUS FOR CONTROLLING THE WELDING CAPACITY DURING ELECTRICAL RESISTANCE WELDING

• Main Author: BELAMARIC, ZELIMIR
• Format: Patent
• Language: English; French
• Published: 08.06.1982
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

A method of, and apparatus for, controlling the welding energy during electrical resistance welding of workpieces, by means of an electrode roll-resistance seam welding machine. The effective value of the welding current is controlled in response to an electrical control signal, at least a component of which is a welding current-correction signal substantially analogous to the welding speed in order to provide a substantially constant welding energy supplied to the workpieces at each section along the formed welding seem at any welding speed. Said welding current-correction signal is produced by means of a programmed control device which simultaneously delivers an electrical rotational speed-reference value signal for controlling and regulating the welding speed.