| 摘要 |
PURPOSE:To execute easily welding, and to make a welding equipment compact by shifting each end edge to be welded of a thin plate to a degree of about a thin plate thickness and welding it. CONSTITUTION:Each thin plate 1, 1 made of Al is shifted by a degree of a plate thickness, and the thin plate 1 of the lower part is projected to this side by a plate thickness from the thin plate 1 of the upper part. Subsequently, a torch is turned to a part of a boundary 4 of the thin plate of the upper part and the thin plate 1 of the lower part and a TIG welding is performed. The upper end part becomes a high temperature first, starts to melt, a molten Al of the upper end part collects in the boundary 4 part, and each thin plate 1, 1 is welded. After welding in a shape of a key, it is turned over and the remaining part is welded. As for the welded lap plate made of Al, its outside surface is covered with copper, and thereafter, the weld zone is cut off, the Al plate whose one face only is covered with copper is obtained, and a pad, etc. of electronic parts are worked. |
