FIELD: electric arc welding processes and equipment, possibly manual electric arc welding by means of coated electrode that may be in different spatial positions.
SUBSTANCE: welding is realized by means of modulated electric current at separate regulation of pulse and pause duration of welding electric current. During pause additional pulses with amplitude equal to that of main pulses, frequency no less than 50 Hz, duration (0.5 - 2) ms are applied on small welding current 5 - 30 A. Heat power of welding current is automatically realized according to action of welding operator due to changing parameters of main pulses depending upon fluctuation of mean voltage of electric arc from predetermined value at relatively small change of arc gap (2 - 2.5)V.
EFFECT: lowered contrast degree of irradiation of electric arc during pulse and pause, enhanced quality of welded joint, possibility for controlling heat power of electric arc according to desire of welding operator, improved topography of welded seam.
5 cl, 5 dwg, 5 ex
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