METHOD OF SURFACING Russian patent published in 1997 - IPC

FIELD: mechanical engineering; strengthening and reconditioning of parts by surfacing. SUBSTANCE: strengthening powder to be applied to surface is fed synchronously with movement of welding device. Powder. Powder is fed behind the arc into welding pool through separate channel which is arranged at angle of 30-40 degrees to axis of electrode. Vertex of angle between powder feed channel axis and electrode axis is pointed to welding pool. Output hole of channel is located at distance of 5-8 mm from surface of welding pool. EFFECT: uniform heating of blank in front of groove, quality forming of bead with guaranteed heating and connection of applied metal with base over entire contact zone.