尺寸精度要求高的薄壁球壳在进行环形焊缝焊接时,必须避免“塌腰变形”。应用设计结构合理的装焊夹具,薄壁球壳的“塌腰变形”得到控制,保证薄壁球壳的尺寸精度并提高产品合格率。 Thin-walled spherical shell with high dimensional accuracy must avoid “collapse deformation” when performing annular weld seam welding. Applied design and reasonable structure of the welding fixture, thin-walled shell “collapse waist deformation ” under control, to ensure the dimensional accuracy of thin-walled spherical shell and improve product yield.