Several points should be noticed in swing welding technology of straight seam steel pipe

The welding current in the straight seam steel pipe swing welding is slightly larger than the traditional welding method. Secondly, the tungsten electrode elongation in the swing seam welding of the straight seam steel pipe is determined according to the pipe wall thickness, which is usually 4-5 mm; the argon gas flow is slightly larger than the traditional welding method. , About 8-10l/min; Finally, the swing amplitude of the straight seam steel pipe is 2mm at the blunt edge of both sides of the fusion seam; the left and right hands are flexibly matched, swing uniformly, and the wire is evenly distributed. Straight seam steel pipe swing welding technology is generally used for welding thick-walled straight seam steel pipe. The technical parameters of the welding method of the straight seam steel pipe are slightly different from those of the traditional linear welding method. The first is that the tip of the porcelain tip of the argon arc welding is slightly thicker than the traditional straight line welding method. There are also differences. For the φ89×5 00Cr19Ni10 weld, for example, the gap between the traditional linear welding method is 0~3mm and the swing method is 4mm. The welding specification is also different.

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