THICK AND LONG SEW WELDING SYSTEM AND METHOD FOR DISTORTION CONTROL AND WITHOUT HEATING POST-WELDING OF PIPE AND CONNECTION HOT TURNT CONNECTIONS

摘要

coarse and long seam welding system and method for distortion control and without post-weld heat treatment of piping hot tap connections and connection refers to the present patent for a method for limiting fitting distortion when welding a accessory (10) to a pipe in service, belonging to the technical sector of mechanics, where the accessory (10) includes a thick seam that extends longitudinally located between the fitting halves and involves welding, on each side of the accessory, middle third section (31) of the pyramid junction using an inward progression from one end of the third intermediate section (31) along a profile of a seam bevel (19) and by welding third outer sections (37) of the seam ( 20) using an outward progression from an end adjacent to the third intermediate section (31) along a seam bevel profile (19); welding of each of the three sections per side includes a welding technique for tempering beads of at least two layers to provide stress relief instead of the traditional post-weld heat treatment.