摘要 |
<P>PROBLEM TO BE SOLVED: To discharge molten slag, generated on a molten pool in welding, from the molten pool efficiently. <P>SOLUTION: In a sliding copper strap for electrogas arc welding which slides in a moving direction of welding while contacting the surface of a to-be-welded material of a groove part of electrogas arc welding, a first trench 16 and a second trench 17 are provided in order from upper side to lower side on the surface facing the groove part of the to-be-welded material of the water-cooled sliding copper strap. The first trench 16 is parallel to the surface of the to-be-welded material and provided for forming a weld bead, and the second trench 17 continues to the lower part of the first trench and is inclined against the surface of the to-be-welded material to discharge the molten slag, and further, in the second trench 17, the trench width gets wider in order from the upper side to the lower side (θ1), and the trench depth gets deeper in order from the upper side to the lower side (θ2). <P>COPYRIGHT: (C)2012,JPO&INPIT |