Narrow Gap Submerged arc welding process due to the electrode that swings

摘要

In submerged arc welding method disclosed by the present invention, oscillating motion wire electrodes (30) is performed inside the groove (10) to form the first bead (50), and this swinging movement When the arc (40) is reciprocated between the central region of the groove (10) and (12) with one (20a, 20b) of the workpiece-side edge, whereby the first bead (50) , I have so as not to extend work side edge of the first from (20a) work side edge to a second (20b).