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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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 weldin

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  • Sheet laser scanning filler wire welding method
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  • Sheet laser scanning filler wire welding method

Examples

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Example Embodiment

[0029] Example 1:

[0030] A thin plate laser scanning filler wire welding method, such as figure 1 As shown, the thin plate used in this embodiment is a T-shaped thin plate. The bottom plate of the right-angled structure of the T-shaped thin plate adopts a method of opening a half V-shaped groove, combined with the laser scanning wire filler welding method, and effectively controls the right-angle structure of the T-shaped thin plate. Weld quality, reduce welding deformation, strengthen the metallurgical combination of welding wire and base material, improve welding efficiency, and form high-quality T-welded joints. The steps are:

[0031] Step S1: Welding sheet h is a 1.5mm thick spcc cold-rolled sheet. At the T-shaped joints of the two sheets to be welded, the bottom plate of the right-angle structure is provided with a half-V groove, such as figure 2 As shown, the groove width t is 0.8mm, and the processed groove and both sides of the surface are polished and cleaned, and the p...

Example Embodiment

[0036] Example 2:

[0037] A thin plate laser scanning wire-filled welding method. The thin plate used in this embodiment is a T-shaped thin plate. The bottom plate of the right-angle structure of the T-shaped thin plate adopts a method of opening a half U-shaped groove, such as image 3 As shown, the combined laser scanning wire filler welding method can effectively control the weld quality of the T-shaped thin plate right-angle structure, reduce welding deformation, enhance the metallurgical combination of the welding wire and the base material, improve the welding efficiency, and form a high-quality T-welded joint. The steps are:

[0038] Step S1: Welding sheet h is a 1.5mm thick spcc cold-rolled sheet. At the T-shaped joints of the two sheets to be welded, the bottom plate of the right-angle structure is provided with a half U-shaped groove, and the groove width t is 1.0mm. The groove and both sides of the surface are polished and cleaned, and the polished and cleaned workpiec...

Example Embodiment

[0043] Example 3:

[0044] A thin plate laser scanning wire-filled welding method. The thin plate used in this embodiment is a T-shaped thin plate, and a half-V-shaped groove is opened at the bottom plate of the right-angle structure of the T-shaped thin plate, such as figure 2 As shown, the combined laser scanning wire filler welding method can effectively control the weld quality of the T-shaped thin plate right-angle structure, reduce welding deformation, enhance the metallurgical combination of the welding wire and the base material, improve the welding efficiency, and form a high-quality T-welded joint. The steps are:

[0045] Step S1: Welding sheet h is a 1.5mm thick spcc cold-rolled sheet. At the T-shaped joints of the two sheets to be welded, the bottom plate of the right-angle structure is provided with a half-V groove, and the groove width t is 1.2mm. The groove and both sides of the surface are polished and cleaned, and the polished and cleaned workpiece to be welded is...

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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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