FIELD: welding processes and equipment, possibly manufacture of cans. SUBSTANCE: method comprises steps of performing periodical preparing of disc electrode by displacing it in vertical direction relative to lengthwise axis of arm of welding machine for compensating reduction of diameter caused by working; adjusting level of lower disc electrode by means of receiving members of stator of disc electrode for positioning said electrode in different height level on arm of welding machine. EFFECT: enhanced accuracy of welding due to elimination of necessity for adjusting guiding head by height level. 3 cl, 4 dwg
