| 摘要 |
PURPOSE:To remove a defect of a welding end part, and to obtain a sound welding joint by using a welding end tab which has formed a recessed part having the almost same shape as a groove shape to a limited length on one side or both sides by a solid flux or a ceramics of a high melting point. CONSTITUTION:An end tab 2 is provided with a wedge shaped recessed part 5 which is the almost same as a groove shape of a weld line of base materials 1, 1' to be welded. Also, a length l extending from the start end of the recessed part 5 to a terminal surface 6 is set to >=5mm. Also, in case when the groove shape of the weld line is other than the wedge shape, the recessed part is formed to match it. Also, the end tab provided with the recessed parts 5, 5 of the groove shape on both sides can be applied to any groove. Moreover, by forming the whole or a part of the recessed part 5 of the groove shape provided on the end tab, by a thin steel plate 4, a welding arc in the end tab part can also be stabilized.
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