| 摘要 |
PURPOSE:To perform the titled welding with high quality by crossing a magnetic field with a welding current flowing in a molten pool of the horizontal welding and pushing up molten metal with the electromagnetic force and preventing a bead from drooping and improving the fining of crystallization and the gas floating by stirring the molten metal. CONSTITUTION:A solid wire or a flux-cored wire 1 of the horizontal position is fed 7 to a horizontal groove of vertical base metal 9 and the welding is performed with a welding power source 8. The magnetic field to cross a welding current flowing at that occasion is formed by flowing an exciting current 10 to an iron core 14 and an exciting coil 15. The molten metal 4 is pushed up with the generating electromagnetic force. Moreover, an alternating field to enlarge the size and time of the pushing-up force can be given thereto. The bead 4 is prevented from drooping, and the fining of the crystallization and the gas floating are improved by stirring the molten metal and the quality of the horizontal welding can be improved.
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