The method of manufacturing the manufacturing apparatus and a welding section steel welding shaped steel

摘要

The present invention enables easy correction of asymmetric welded shaped steel for the intended cross-sectional shape even if the respective parts of the flange materials receive different amounts of thermal deformation during welding. The welded shaped steel manufacturing device according to the present invention welds the ends of a web material (3) to flange materials (1, 2), and comprises a corrective device (100) for correcting the thermal deformation of the flange materials caused by heat input during the welding. The corrective device has flange material correcting rollers (24) that are provided at the ends of the flange materials and press the web material side of the flange materials to correct the thermal deformation from the ends of the flange materials to the parts of the flange materials joined to the web material, and web material supporting rollers (44, 45) that support the web surfaces of the web material. The flange material correcting rollers provided at the ends of the flange materials correct the thermal deformation by applying respective independent pressures to the ends of the flange materials.