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Welding method for shipbuilding building

A welding method and technology for ships, applied in welding equipment, manufacturing tools, arc welding equipment, etc., can solve problems such as low efficiency and inability to meet the needs of modern production, and achieve improved efficiency, good economic and social benefits, and improved welding. quality effect

Active Publication Date: 2013-09-04
YANGZHOU DAYANG SHIPBUILDING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: In view of the low efficiency of the existing welding methods in the prior art and the inability to meet the needs of modern production, the purpose of the present invention is to provide a welding method in shipbuilding to realize the establishment of efficient, energy-saving and environmentally friendly modern ships. Welding Technology

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Effect test

Embodiment 1

[0012] According to the characteristics of the hull structure, the present invention mainly adopts low-carbon steel, the thickness of the plate is 12-32mm, and the welding performance is good. First, in the panel area, the double-wire submerged arc automatic welding and FCB high-efficiency welding technology are used to replace the traditional welding wire double-sided welding technology to realize multi-wire single-sided welding and double-sided forming technology; in small assembly places, there are many T-shaped structures, most of which use flat angle welding positions, and the length of the weld seam is longer; adopt CO 2 Semi-automatic fillet welding for flat corner position in small structures, T-bar system adopts T-shaped bar automatic assembly, welding and straightening integrated welding technology; body longitudinal adopts advanced assembly, welding integrated longitudinal installation, welding (16-electrode automatic fillet welding) technology, Weld 8 seams of 4 lon...

Embodiment 2

[0019] In the welding process, welding parameters have a direct impact on the shape of the weld. Compared with single-wire welding, multi-wire high-efficiency welding technology is greatly affected by the following parameters:

[0020] The current and voltage of the front wire electrode are directly related to the back forming: if the current is too large, the back forming will be too high and wide; If the back weld is formed too wide; if the arc voltage is too low, the back weld will be narrow and low, or even poorly formed. Therefore, in the multi-wire single-sided welding process, the formation of the back weld is the welding current of the front electrode, and the arc voltage is selected appropriately. important basis for no.

[0021] The choice of rear electrode current and arc voltage has a certain influence on the crystallization of the weld and the good shape of the front weld. Remelting the front wire weld seam, destroying the formation of the back weld seam, whether...

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Abstract

The invention discloses a high-efficiency welding method for shipbuilding, which includes the steps: firstly, performing welding in a plate splicing area by means of a twin-wire submerged automatic arc double-side welding technique and an FCB (flux copper backing) submerged automatic arc single-side welding and double-side forming technique; secondly, automatically welding and correcting an integrally welded T bar in a small assembly area by the aid of semiautomatic horizontal fillet welding small components and T profiles; thirdly, welding 4-8 longitudinals and 8-16 welding lines once at a hull longitudinal manufacturing position by means of a longitudinal installation welding technique integrating installation and welding; and fourthly, realizing vertical butt joint automation in ship erection process by means of perpendicular gas electric welding. Compared with a traditional welding technique, the high-efficiency welding method for shipbuilding not only has the advantage of high efficiency, but also executes the advanced conception of energy conservation and environmental protection, improves ship welding quality during production practice, saves cost, improves efficiency, has excellent practicability, and can generate excellent economic and social benefits.

Description

technical field [0001] The invention relates to a welding method, in particular to a welding method in shipbuilding. Background technique [0002] Since the 1970s, the rapid development of science and technology has promoted the overall progress of shipbuilding technology. In order to maintain a leading position in the fierce market competition, the world's advanced shipbuilding countries have devoted all their efforts to research and development of new technology, new technology, and new equipment, and to reform and transform outdated and backward shipbuilding methods and management. "Integrated modern shipbuilding model and other new concepts and ideas, and achieved significant economic benefits. [0003] The hull construction project is the foundation and front-end project of shipbuilding, and it is also an important link that has the most shipbuilding characteristics and reflects the quality level and ability of shipbuilding technology. Its workload accounts for more th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K28/02B23K9/16B23K9/18
Inventor 王进聂加俊
Owner YANGZHOU DAYANG SHIPBUILDING