PURPOSE: To shorten a positioning time and a welding time of a member to be welded in a horizontal position welding and to reduce a welding defect.
CONSTITUTION: A bevel in the horizontal position welding is made to be 35-55° angle of bevel at a lower plate 1 side upward from the horizontal line, and then angle of bevel at an upper plate 2 side is parallel to the lower plate side to reduce the cross sectional area of the bevels. An electrode nozzle 8 providing an electric conducting tip 7 having an eccentric hole in this bevel at the tip part, is inserted and the tip part of a welding wire 6 passed through the electric conducting tip 7 is rotated by rotating the electrode nozzle 8 to rotate an arc at high speed and the welding is executed in one pass and one layer.
MURAKAMI TADANOBU
KANAYAMA KIYOSHI
TANE AKIRA
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