| 摘要 |
PURPOSE:To easily perform the welding without any welding defect at high speed by performing a submerged arc welding by feeding the electrode of a strip metal with about rectangular cross section so that the width direction becomes in the welding direction. CONSTITUTION:A steel plate 3 is subjected to a submerged arc welding by generating an arc 5 by an electric power source 4 by feeding the electrode 1 of a strip steel with about rectangular cross section via a guide 2. Said strip electrode 1 is fed so that the width direction becomes in the welding direction. The thickness of said strip metal 1 is preferably adjusted so as to obtain the optimum welding conditions by varying its thickness in the width direction. In this way a stabilized arc is obtd., a slag inclusion is restrained and a defectless welding is performed at high speed.
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