Method for welding inclined pipe plate by using MAG welding

• Main Authors: HE YAOFEI, LU XIAOXIN, WANG YUEFENG, LIANG ENRONG
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2018
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention discloses a method for welding an inclined pipe plate by using MAG welding, relates to the technical field of welding, and provides a welding method capable of improving welding quality.The welding method comprises the following steps of: A, preparing welding; B, welding the bottoming welding seam, wherein, an initial primer solidification molten pool is welded through a 'three-point connection method', and then the primer solidification molten pool is backed up until the welding is full for one circle at the two edges of the initial primer solidification molten pool along the radial direction of the pipe; C, welding the welding seam of the cover surface, wherein the multi-channel cover surface molten pool is backed up along the radial direction of the pipe until the weldingis full for one circle. According to the invention, the continuous welding in the circumferential direction is converted into a plurality of sections of arc welding in a straight line direction, so that the controlling of the