大型低温液体贮槽内槽底板的焊接变形控制

Control for the Weld-deformation of Inner-tank Baseplate in Large-scale Cryogenic Liquid Tank

根据大型低温液体贮槽内槽底板的部件组成及焊缝分布特点,分析了焊接底板时所产生的应力和变形状态,制定了一套有效合理的焊接工艺措施,以减少焊缝的收缩量,充分利用焊接底板时所产生的内应力,可有效地控制内槽底板的焊接变形。

Basing on the actual collocation feature of both plates and welds located on inner-tank baseplate in large-scale cryogenic liquid tank, the stress ＆amp; deformation resulting from the welding of baseplate is pointed out briefly. One reasonable welding procedure is shown for reducing the joint-shrinkage effectively, and the deformation is in good control too by utilizing the weld-stress while welding the baseplates.