One-time forming welding method for hull structure panel

Abstract

The invention discloses a one-time forming welding method for a hull structure panel. The one-time forming welding method comprises the following steps that a vertical electro-gas welding machine andwelding accessories are installed; the positions of a front welding wire and a back welding wire of the vertical electro-gas welding machine in the weld groove are adjusted according to the plate thickness of the to-be-welded structure panel, so that the back welding wire keeps a first distance from the root of the weld groove, and a second distance is kept between the front welding wire and the back welding wire; the vertical electro-gas welding machine is started; the front welding wire swings back and forth in the depth direction of the weld joint; the back welding wire does not move; and the front welding wire and the back welding wire are molten simultaneously to form a molten pool, so that the weld joint is formed once. According to the method, single-pass efficient welding can be conducted on the steel plate with the thickness of 38 mm to 84 mm; the weld joint formed at a time can meet related technical index requirements; the welding period of the super-large-thickness high-strength steel plate can be effectively shortened; and the construction efficiency and quality are improved.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a one-time forming welding method for a hull structure panel. Background technique [0002] With the development of ultra-large containers above 10,000 boxes, the high-strength marine steel plates in the area of ​​hatch enclosures and torsion boxes will become thicker and thicker. The traditional semi-automatic CO2 welding process is far from meeting the requirements of ultra-large containers in terms of quality and efficiency. Due to the requirements of the ship production schedule, the single-wire vertical gas-electric welding technology was introduced. Although the single-wire vertical gas-electric welding technology has promoted the improvement of production efficiency to a certain extent, the maximum plate thickness that can be welded by single-wire vertical gas-electric welding does not exceed 38mm. Unable to weld ultra-thick steel plates. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] With the development of ultra-large containers above 10,000 boxes, the high-strength marine steel plates in the area of ​​hatch enclosures and torsion boxes will become thicker and thicker. The traditional semi-automatic CO2 welding process is far from meeting the requirements of ultra-large containers in terms of quality and efficiency. Due to the requirements of the ship production schedule, the single-wire vertical gas-electric welding technology was introduced. Although the single-wire vertical gas-electric welding technology has promoted the improvement of production efficiency to a certain extent, the maximum plate thickness that can be welded by single-wire vertical gas-electric welding does not exceed 38mm. Unable to weld ultra-thick steel plates

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