Control Method for Spiral Welded Pipe Double-sided Formation with Strip Butting Single-pass Single-side Submerged Arc Welding Process
By constructing a functional relationship between the weld penetration depth and the welding specifications of the double wire single pass submerged arc welding,as well as the functional relationship between the welding wire coverage area and the welding specifications of each wire single pass submerged arc welding,a welding specification corresponding to the groove size of steel plate,single pass double wire single pass submerged arc welding is designed,and the welding process of single-side submerged arc automatic welding formation with padded steel plate is used,which not only ensures the penetration of the butt steel plate,but also ensures that the welding wire coverage area meets the required deposition amount for the double-sided formation of the weld,and ensures the quality of the double-sided for-mation of the weld,resulting in freedom from the process of root-cleaning welding as needed for the seam top of the fini-shed pipe as remained from the steel stripe butting welding process,and thus improving production efficiency.
SAWH pipesteel stripsingle passsingle side submerged arc welding double-side formation
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