FIELD: mechanical engineering; welding. SUBSTANCE: invention relates to automatic surfacing of thin-walled blade surfaces of parts. Crystallizer acts onto welding pool. Filler wire is preliminarily insulated. Filler wire is fed into welding pool at appearance of potential difference between wire and part under surfacing, and feeding is stopped when potential difference disappears. EFFECT: provision of high quality of surfacing, reduced consumption of filler wire. 3 dwg
