PURPOSE: To form the sound back-bead where no strict precision or the like is required and no residual slits exist, to facilitate formation of the excellent back-bead, and to improve the fatigue performance.
CONSTITUTION: Back-bead parts 3, 4 are formed on the back side of the weld part of a first welding base metal 1 and on the back side of the groove of a second welding base metal 2 respectively by the bead-on-plate welding of the arc welding, and the back bead 6 is formed between the respective back- bead parts 3, 4 by abutting the end part on the groove back side of the second welding base metal 2 to the back bead part 3, or arranging the corresponding end part in the vicinity thereof, and then executing the welding from the front side of the groove.
| JPS6221467 | WELDING DEVICE |
| JPS6055222 | [Title of the Invention] Butt welding method |
HASEGAWA TOSHIO
TANAKA MASAKI
KAWAHARA HIDEO
