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Sheet laser scanning filler wire welding method

A technology of laser scanning and welding methods, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as welding deformation, uneven weld seam, poor quality and mechanical properties of weld seam joints, and promote metallurgical bonding , increase the reflection effect, improve the effect of welding efficiency

Active Publication Date: 2018-12-21
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical scheme of the present invention is: a thin plate laser scanning wire-filling welding method, which adopts the groove of a certain angle on the bottom plate of the right-angle structure of the T-shaped piece or L-shaped piece and the laser wire-filling welding technology to solve the problem of welding the T-shaped thin plate by the traditional method. Welding deformation, uneven weld seam, poor quality and mechanical properties of weld seam joints and other problems caused by T-shaped or L-shaped pieces, and improve the welding quality and welding efficiency of thin-plate T-shaped or L-shaped right-angle structures

Method used

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  • Sheet laser scanning filler wire welding method

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Effect test

Embodiment 1

[0030] A thin plate laser scanning wire filling welding method, such as figure 1 As shown, the thin plate used in this embodiment is a T-shaped thin plate. By adopting the method of opening a half-V-shaped groove on the bottom plate of the right-angled structure of the T-shaped thin plate, combined with the laser scanning wire filling welding method, the right-angled structure of the T-shaped thin plate is effectively controlled. Weld seam quality, reduce welding deformation, enhance the metallurgical bonding between welding wire and base material, improve welding efficiency, and form high-quality T-shaped welded joints. The steps are:

[0031] Step S1: The welded thin plate h is an spcc cold-rolled thin plate with a thickness of 1.5mm. At the T-shaped joint of the two thin plates to be welded, a half-V-shaped groove is opened on the bottom plate of the right-angle structure, such as figure 2 As shown, the groove width t is 0.8mm, and the processed groove and the surfaces on ...

Embodiment 2

[0037] A thin plate laser scanning wire filling welding method, the thin plate used in this embodiment is a T-shaped thin plate, by adopting the method of opening a half U-shaped groove on the bottom plate of the right-angle structure of the T-shaped thin plate, such as image 3 As shown, combined with the laser scanning wire filling welding method, the weld seam quality of the T-shaped thin plate right-angle structure can be effectively controlled, the welding deformation can be reduced, the metallurgical bonding between the welding wire and the base material can be enhanced, the welding efficiency can be improved, and a high-quality T-shaped welded joint can be formed. The steps are:

[0038] Step S1: The welded thin plate h is an spcc cold-rolled thin plate with a thickness of 1.5 mm. At the T-shaped joint of the two thin plates to be welded, a semi-U-shaped groove is opened on the bottom plate of the right-angle structure, and the groove width t is 1.0 mm. Grinding and cle...

Embodiment 3

[0044] A thin plate laser scanning wire filling welding method, the thin plate used in this embodiment is a T-shaped thin plate, by adopting the method of opening a half V-shaped groove at the bottom plate of the right-angle structure of the T-shaped thin plate, such as figure 2 As shown, combined with the laser scanning wire filling welding method, the weld seam quality of the T-shaped thin plate right-angle structure can be effectively controlled, the welding deformation can be reduced, the metallurgical bonding between the welding wire and the base material can be enhanced, the welding efficiency can be improved, and a high-quality T-shaped welded joint can be formed. The steps are:

[0045] Step S1: The welded thin plate h is an spcc cold-rolled thin plate with a thickness of 1.5 mm. At the T-shaped joint of the two thin plates to be welded, a half-V-shaped groove is opened on the bottom plate of the right-angle structure, and the groove width t is 1.2 mm. Grinding and cl...

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Abstract

The invention discloses a sheet laser scanning filler wire welding method. The method comprises the following steps that S1, before welding, a semi-V-shaped or semi-U-shaped groove is machined in a bottom plate of a to-be-welded right-angled structure of a to-be-welded workpiece; S2, welding wires are fed into the groove, and laser beams are focused to the welding wires; and S3, required laser welding technological parameters are set, and laser scanning filler wire welding is performed under protective gas. According to the sheet laser scanning filler wire welding method provided by the invention, on the basis of the regular T-shaped or L-shaped right-angled welding structure, the semi-V-shaped or semi-U-shaped groove is formed, the assembly precision of the right-angled structure can be greatly reduced, stacking and sinking of weld joints are effectively controlled, splashing on the surfaces of the weld joints is reduced, and the surfaces of the weld joints are smother; welding deformation of the sheet right-angled structure can be reduced while heat input is reduced, and the porosity rate is decreased; and metallurgical bonding of the welding wires and a base can be promoted, thesheet welding efficiency is improved, and the weld joints with the good quality are formed.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to a thin-plate right-angle structure laser scanning wire-filling welding method, which is suitable for high-efficiency and high-quality welding of right-angle structures such as T-shaped or L-shaped thin plates. Background technique [0002] With the development of shipbuilding, steel structure engineering and automobile manufacturing industry, more and more thin-plate right-angle structures are used, and higher requirements are put forward for the deformation and mechanical properties of welded joints of thin-plate right-angle structures. For thin-plate right-angle structural parts, traditional TIG welding is a commonly used connection process. However, with the continuous improvement of the requirements for right-angle structural connections in industrial production, the low efficiency and low energy density of the TIG welding process are no longer the best welding methods....

Claims

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Application Information

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IPC IPC(8): B23K26/21B23K26/24B23K26/60
CPCB23K26/24B23K26/21B23K26/60
Inventor 崔承云张文龙崔熙贵阮仲伟李晓东梅鹏陈强张红劲
Owner JIANGSU UNIV
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