Method for improving thick plate vertical butt welding efficiency

A welding efficiency and butt welding technology, applied in welding equipment, welding accessories, welding rod characteristics, etc., can solve problems such as improving the efficiency of vertical butt welding of thick plates, and achieve the effect of shortening welding cycle, improving construction efficiency and quality, and improving work efficiency.

Pending Publication Date: 2022-04-12
SHANGHAI JIANGNAN CHANGXING SHIPBUILDING
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Problems solved by technology

Therefore, the problem of improving the vertical butt joint efficiency of thick plates in the thickness range of 35-50mm needs to be solved urgently

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  • Method for improving thick plate vertical butt welding efficiency
  • Method for improving thick plate vertical butt welding efficiency
  • Method for improving thick plate vertical butt welding efficiency

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Embodiment Construction

[0038] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040] The present application will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.

[0041] The present invention provides a method for improving the welding efficiency of vertical butt welding of thick plates. The welding method adopts the combination of CO2 gas shielded welding and gas-electric vertical welding to weld the hull structure panel 1 with a thickness of...

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Abstract

The invention discloses a method for improving the welding efficiency of vertical butt welding of thick plates. The method comprises the following steps of pretreatment before welding; the CO2 gas shielded welding machine is started, backing welding and filling welding are conducted on a welding seam between the two to-be-welded structural panels, and when the distance between the surface of the welding seam of the filling layer and the front faces of the to-be-welded structural panels is 10-15 mm, welding work of CO2 gas shielded welding is ended; an electro-gas welding machine is installed and adjusted; and the electro-gas welding machine is started, cosmetic welding is conducted on the unwelded groove between the two to-be-welded structural panels, and in the welding process, a welding wire swings in a reciprocating mode in the width direction of the unwelded groove, and meanwhile, the welding wire automatically walks upwards according to molten pool forming till welding is completed. According to the method, steel plates with the thickness of 35 mm-50 mm can be efficiently welded, formed welding seams can meet relevant technical index requirements, and the thick plate vertical butt joint welding efficiency can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a method for improving the welding efficiency of vertical butt welding of thick plates. Background technique [0002] In the process of shipbuilding and steel structure construction, gas electric vertical welding is an efficient automatic welding technology with stable quality, but it can only complete vertical welding butt joints within 35mm thickness. When the plate thickness is greater than 35mm, due to the technical limitations of gas electric vertical welding itself, the vertical butt joint of thick plates can only be completed by CO2 gas shielded welding. The welding efficiency of gas-electric vertical welding can reach more than 5 times that of CO2 gas-shielded welding, and when CO2 gas-shielded welding is performed, multi-layer and multi-pass welding is often used, and technical requirements such as welding slag cleaning and inter-layer temperature control also furth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/28B23K9/32
Inventor 刘磊沐君飞陈忠德钱慧朱未郑迎颖
Owner SHANGHAI JIANGNAN CHANGXING SHIPBUILDING
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