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Method to Prevent Welding Deformation of Cantilever Beam Bottom Plate

A welding deformation, cantilever beam technology, applied in welding equipment, auxiliary welding equipment, welding/cutting auxiliary equipment, etc. The effect of improving welding quality

Active Publication Date: 2015-09-16
SHANGHAI ZHENHUA HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The purpose of the present invention is to provide a method for preventing the welding deformation of the cantilever beam bottom plate to solve the problems of high welding defect rate and low precision of the cantilever beam bottom plate in the prior art

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  • Method to Prevent Welding Deformation of Cantilever Beam Bottom Plate
  • Method to Prevent Welding Deformation of Cantilever Beam Bottom Plate
  • Method to Prevent Welding Deformation of Cantilever Beam Bottom Plate

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Embodiment Construction

[0029] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] The 300-foot cantilever beam bottom plate 6 is 610mm wide and nearly 39,000mm long, and most of the thickness reaches 76mm. Since the bottom plate needs to be welded with the web and the V plates on both sides, not only the length of the weld is long, but also all of them are full penetration welds. Once a large deformation occurs, it is difficult to correct, so anti-deformation and rigid fixation before welding are the key. The invention discloses a new technology for controlling the welding deformation of the cantilever beam bottom plate 6, which effectively reduces the post-welding deformation of the cantilever beam bottom plate 6. resulting deformation.

[0031] refer to figure 1 , the method for preventing the welding deformation of the cantilever beam bottom plate 6 of the present invention comprises 8 main steps...

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Abstract

The invention discloses a method for preventing the welding deformation of a cantilever beam base plate, which is characterized by comprising the steps as follows: step 1, placing a track beam on a platform; step 2, placing the cantilever beam base plate on the track beam; step 3, performing pressing, pre-molding and reversible deformation on the cantilever beam base plate and the track beam; and step 4, welding. According to the technical scheme of the invention, the fixing mode of the cantilever beam base plate during welding is mainly improved, thus effectively reducing the deformation generated after the welding of the cantilever beam base plate, improving the welding quality of the cantilever beam base plate and improving the quality of cantilever beam base plate products.

Description

technical field [0001] The invention relates to a method for constructing a cantilever beam of a self-elevating drilling platform, and more particularly relates to a method for preventing welding deformation of the bottom plate of the cantilever beam. Background technique [0002] The jack-up offshore drilling platform is an important equipment for offshore oil and gas exploration and development. The cantilever beam structure is the key equipment of the jack-up drilling platform. Its performance and precision control directly affect the safety and use of the platform. Effect. Among them, the precision control of the cantilever beam bottom plate is the part that requires the highest precision in the cantilever beam manufacturing process, and the success of the bottom plate precision control is directly related to the quality of the overall structure of the cantilever beam. [0003] At present, most manufacturers of 300-foot jack-up drilling platforms only use clamps to fix ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/04
Inventor 陆海王国威卢玉春吴正峰
Owner SHANGHAI ZHENHUA HEAVY IND