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Welding deformation flatness correction method of finished steel crane beam

A welding deformation and flatness technology, applied in the field of welding, can solve problems such as long time-consuming, affecting installation progress and project quality, and high labor intensity of workers, so as to improve efficiency, reduce installation cost, and reduce labor intensity.

Inactive Publication Date: 2013-08-07
ANHUI HONGLU STEEL CONSTR (GROUP) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the crane girder is delivered for on-site installation, if it is found that the weld of the crane girder is unqualified, it must be repaired. Due to the existence of the stiffener plate, the upper flange plate will form a wave deformation, which must be corrected to make the steel crane girder reach the specified Quality standards, not only the labor intensity of workers is high, but also takes a long time, which will affect the installation progress and project quality

Method used

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  • Welding deformation flatness correction method of finished steel crane beam
  • Welding deformation flatness correction method of finished steel crane beam
  • Welding deformation flatness correction method of finished steel crane beam

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Embodiment Construction

[0016] The method for correcting the flatness of the welding deformation of the finished steel crane beam of the present invention comprises the following steps:

[0017] a. Make arc correction tooling and deflection control tooling, such as figure 1 , figure 2 , image 3 As shown, the arc correction tooling includes a bottom plate 1, an arc correction jack 2, a jack fixing frame 3, a curved arc correction bracket 5 and a pressing mechanism, the bottom plate 1 is located at the lower part of the curved arc correction bracket 5, and the jack fixing frame 3 is fixedly connected to On the base plate 1, the upper part of the arc-correcting bracket 5 is provided with a pressing mechanism. The pressing mechanism includes a cylinder 6, a cylinder connecting plate 7, a first pressing part 4 and a second pressing part 8. The two ends of the cylinder connecting plate 7 have a first pressing part 4 and a second pressing part 8, and the cylinder is connected The plate 7 is fixedly con...

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Abstract

The invention discloses a welding deformation flatness correction method of a finished steel crane beam. The welding deformation flatness correction method includes the following steps: a, an arc correction tool and a deflection control tool are made; b, a crane beam is placed on the deflection control tool; c, the arc correction tool is placed at a local area between two stiffening rib plates of the crane beam, and correction is performed by using a roasting mode; and d, the arc correction tool is moved to the place between the adjacent stiffening rib plates after the local area is corrected, correction is performed sequentially by using a roasting mode until specified quality standard is achieved. The welding deformation flatness correction method of the finished steel crane beam adopts the measure, can reduce labor intensity of workers, improves efficiency, shortens time for the crane beam to occupy field space, accelerates installation progress, and reduces installation cost.

Description

technical field [0001] The invention relates to the technical field of welding, in particular to a method for correcting the flatness of welding deformation of a finished steel crane beam. Background technique [0002] The steel crane girder is H-shaped with upper flange plate, lower flange plate, web plate and stiffener plate with spaced stiffener plate between the upper flange plate and lower flange plate, and the web plate is in the upper flange plate It is integrated with the lower flange plate by welding. Each stiffening rib plate is welded to the upper flange plate and the web plate. The visual inspection of the weld and the non-destructive inspection of the butt weld shall meet the secondary quality standard. When the crane girder is delivered to the site for installation, if it is found that the weld of the crane girder is unqualified, it must be repaired. Due to the existence of the stiffening rib, the upper flange plate will form wave deformation, which must be cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D1/00
Inventor 苏伟
Owner ANHUI HONGLU STEEL CONSTR (GROUP) CO LTD
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