| 摘要 |
PURPOSE:To obtain weld zones of good penetration in the stage of welding the end parts of clad plates wherein plural metallic plates are superposed to each other by the arc, by providing projecting lines to the end faces of the metallic plates to be welded located at the center of the end faces. CONSTITUTION:Plural metallic plates 2 are superposed to make clad plates, and projecting line parts 7 are provided on the end faces of at least one sheet of the metallic plates to be welded located at the center. While the parts 7 are melted by generating the arc between the peak parts of the parts 7 and an electrode 4, the arc is moved, whereby these are welded. Therefore, the generation and concentrating characteristics of the arc are excellent and the weld zones 5 of good penetration are obtained. |
