| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel patch used for electroslag welding of a T-joint, a patch that hardly causes weld defects such as a weld residue in a groove corner even with smaller welding heat input and that is suitable for welding in assembling a box column for construction. SOLUTION: The patch has a cross section which is a rectangle having in part a notched recess due to rolling. The cross section of the recess is composed of a curve having a radius of curvature≥1 mm at any position in the proximity to an end, at least on the side of a diaphragm and further on the side of a skin plate. Otherwise, it is composed of a curve having a radius of curvature≥1 mm at any position in the proximity to the end on the diaphragm side, and a straight line connecting with this curve and intersecting at the skin plate at an angle of≥90°. COPYRIGHT: (C)2007,JPO&INPIT
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