FIELD: method of pig-iron pieces welding used in different branches of national economy. SUBSTANCE: in process of pig-iron welding operation heating, edges treatment, flash and welding are exercised in medium of carbon dioxide using steel wire with wire feeding speed by 10 % lower, than speed usually set for the modes. Heated edges before welding are cooled in the air and during welding - after each pas of arc from top downward along bead. After edges are filled seam is heated by arcing between electrode and plate adjacent to seam zone. EFFECT: improved process of pig-iron pieces welding.
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