FIELD: contact spot welding. SUBSTANCE: N pairs of welding electrodes 5,10 are simultaneously joined with secondary winding of welding transformer 1. Movable n electrodes 10 are connected with secondary winding of welding transformer through n thyristor contactors 8. Contactors are switched on with n-channel control unit 3 for realizing successive welding of each spot in such a way that n electrodes are connected by means of common motion drive unit. EFFECT: enhanced efficiency, high quality of welded articles such as reinforcement networks. 1 dwg
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|---|---|---|---|
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