Welding method of transverse butt seam one-sided submerged arc welding

Abstract

The invention discloses a welding method of transverse butt seam one-sided submerged arc welding. The welding method includes the following steps: S100, a welding sheet is provided a one-sided V-shaped slope opening is formed in the front face of the welding sheet, the slope opening comprises an upper slope opening and a lower slope opening, and the lower slope opening is parallel to the horizontal surface; S200, a high temperature and back face welding molding auxiliary gasket is stuck to the back face, corresponding to the slope opening, of the welding sheet; S300, a base material is paved at the bottom of the slope opening and fully covers the bottom gap of the slope opening, and the base material is the broken welding wire; and S400, the submerged arc welding is adopted to conduct basewelding so that the back face welding seam molding is achieved, and then filling welding and cover welding are conducted in sequence. By using the one-sided welding of the transverse butt seam, during welding, base welding, filling welding and cover welding adopt the submerged arc welding fro welding, the welding speed and quality can be effectively improved, the operation difficulty is reduced,meanwhile, the welding quality after molding is high, and the welding environment is high.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a single-sided submerged arc welding method for transverse butt joints. Background technique [0002] For the welding of horizontal butt joints, there are currently three methods: [0003] The first one, the whole process uses CO 2 Semi-automatic welding, using a welding wire with a diameter of 1.2mm for backing, filling and cover welding, the existing defects are: for the transverse butt joints of the outer plate, inner shell plate, wall plate, etc. of the hull, this welding method is not easy to weld. Control, easily affected by factors such as welder technology, welding position, welding conditions, etc., the welding quality is low, the weld seam is unevenly formed, and the weld seam is prone to defects such as cracks, shrinkage cavities, and pores during the welding process, and it takes a lot of money after welding The man-hours are used to repair and polish the weld seam...

AI Technical Summary

Problems solved by technology

[0003] The first one, the whole process uses CO 2 Semi-automatic welding, using a welding wire with a diameter of 1.2mm for backing, filling and cover welding, the existing defects are: for the transverse butt joints of the outer plate, inner shell plate, wall plate, etc. of the hull, this welding method is not easy to weld. Control, easily affected by factors such as welder technology, welding position, welding conditions, etc., the welding quality is low, the weld seam is unevenly formed, and the weld seam is prone to defects such as cracks, shrinkage cavities, and pores during the welding process, and it takes a lot of money after welding The man-hours are used to repair and polish the weld seam, which greatly reduces the welding efficiency of the horizontal butt weld seam and increases the production cost;

[0004] The second type: use magnetic guide rail type automatic welding trolley to hold 2 CO 2 torch for twin wire welding, with CO 2 The welding method of semi-automatic welding is similar, and the existing defects are: although for CO 2 Semi-automatic welding has been improved to improve welding efficiency, but welding is diffi

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