| 摘要 |
PURPOSE:To prevent the production of welding defects such as voids and others by limiting the bead sectional shape in the same direction as the bead radiation direction and rectangular to the weld line, in the specified range of the total penetration depth from the beam radiation side surface of the materials to be welded in performing welding. CONSTITUTION:Welding is performed by so adjusting the output or focus of the beam that the sectional shape of the weld beads in the same direction as the beam radiation direction and rectangular to the weld line existing in the range of 60% of total penetration depth from the beam radiation side surface of the materials to be welded becomes as follows. It is so controlled that the bead width becomes 6mm or less and the ratio of (maximum bead width/minimum bead width) becomes 1-1.7. Thereby, the welding of the captioned material of plate thickness of 50mm or more may be accomplished. |
