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1 前言罐底板的焊接变形主要有三种形式 :纵向收缩、横向收缩和角变形。由此将对罐底板产生的影响是 :①罐底板外形尺寸改变 ;②罐底板焊缝处下凹 ,特别是板的两端头下凹 ;③罐底板产生波浪变形 ;④罐底板三块板的重叠处易产生裂纹 ;⑤大角焊缝处罐底边缘板上挠。因此如何减小
1 Introduction Tank bottom welding deformation mainly in three forms: longitudinal contraction, lateral contraction and angular deformation. This will have an impact on the tank floor is: ① tank bottom dimensions change; ② tank floor weld Department at the concave, especially the two ends of the plate concave; ③ tank floor wave deformation; ④ tank floor three panels Of the overlap prone to cracks; ⑤ large fillet weld at the edge of the bottom edge of the flexible plate. So how to reduce it