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公开(公告)号:US4320277A
公开(公告)日:1982-03-16
申请号:US124559
申请日:1980-02-25
CPC分类号: B23K33/004 , B23K9/1735 , B23K9/18
摘要: Circular pipe of large diameter progressively formed of flat stock, the pipe having a single longitudinal seam is seam-welded by preparing welding grooves such that the inner groove is smaller in size and angle than the outer groove, sequentially carrying out submerged arc welding on the inner welding groove, and large current MIG welding to then first layer of the outer welding edge and a submerged arc welding to a second layer thereof.
摘要翻译: 由扁平坯料逐渐形成的大直径圆管,具有单个纵向接缝的管道通过制备焊接槽而被焊缝焊接,使得内槽的尺寸和角度比外槽更小,依次在其上进行埋弧焊 内部焊接槽和大电流MIG焊接,然后到外部焊接边缘的第一层和浸没电弧焊接到其第二层。