| 摘要 |
PURPOSE:To increase the mechanical strength of a lead storage battery, and improve its appearance by taking a sufficient welding depth at first in subjecting a terminal part or an intercell-connecting part to gas welding or plasma-arc welding, and regulating the appearance of the welding part after that. CONSTITUTION:After a storage battery 1 is fixed in a given position by means of a stopper 2, a mold 3 and a burner 4 are moved down, and welding is performed for about three minutes while the distance (A) between the upper surface of the mold 3 and the pointed end of the burner 4 is maintained at about 30mm. (figure b). Then, after a sufficient welding depth is realized by the above welding, a cooling time of around 0.5-1sec is allowed, and the appearance of the welding part is regulated by applying a frame 8 to the welding part for about one second while the distance (B) between the upper surface of the mold 3 and the pointed end of the burner 4 is maintained at 50-70mm. as indicated in figure (c). Following that, when molten lead hardens after allowing a cooling time of around one second, the burner 4 and the mold 3 move upward, and the welding of the terminal part is completed. The state of thus completed terminal part is as indicated in figure (a). Consequently, in such a terminal part, a sufficient welding depth (C) is secured, any burr, crater or the like is not caused, and an excellent appearance is obtained. |
