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重庆望江机器厂在承接鲁南电站的一批大型H 型钢焊接任务中,为防止焊接变形,在焊接工艺上采取了一些措施,保证了技术要求。这批H型钢长13940～13960mm,高400～600mm,腹厚15～40mm,翼宽400～800mm,翼厚25～60mm。材质16Mn钢。要求结构能抗7级大风和7级以上地震设计烈度,因此,要求加工技术条件非常严格:全长挠曲变形≤6mm,旁弯≤6mm,扭曲≤5mm,翼缘倾斜≤1.5～3mm(前系连接部
In order to prevent welding deformation, Chongqing Wangjiang Machinery Factory took over a number of large-scale H-beam welding tasks for the Lunan Power Station and took some measures in the welding process to ensure technical requirements. These H-shaped steels are 13940 to 13960 mm long, 400 to 600 mm high, 15 to 40 mm thick, 400 to 800 mm wide, and 25 to 60 mm thick. Material 16Mn steel. The structure is required to be able to resist the design intensity of magnitude 7 and magnitude 7 earthquakes. Therefore, the processing technology requirements are very strict: the full-length flexural deformation is ≤6mm, the side bend is ≤6mm, the distortion is ≤5mm, and the flange inclination is ≤1.5～3mm (before Department connection