A method of oscillating laser filler wire welding for large-gap butt joints of aluminum alloy thin plates

A technology of laser wire filling and aluminum alloy welding wire, applied in laser welding equipment, welding/welding/cutting items, metal processing, etc., can solve the problems of low welding efficiency, limited welding size and joint form, etc., and achieve high welding speed , reduce the dilution rate, reduce the effect of welding heat input

Active Publication Date: 2021-09-17
北京金炬科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the problems of low welding efficiency and limited welding size and joint form in solid phase welding also make it difficult to be widely used in flexible and complex aerospace structural parts.

Method used

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  • A method of oscillating laser filler wire welding for large-gap butt joints of aluminum alloy thin plates
  • A method of oscillating laser filler wire welding for large-gap butt joints of aluminum alloy thin plates
  • A method of oscillating laser filler wire welding for large-gap butt joints of aluminum alloy thin plates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Select 1.6mm thick SiC with 17% volume fraction p / 2009Al composite material is used as the test plate to be welded, and the welding is carried out according to the above-mentioned swing laser wire-filled welding method of large-gap butt joint of aluminum alloy thin plates. The welding parameters are as follows: the welding wire is 5356 aluminum alloy welding wire; Amplitude 1.0mm; swing frequency 200Hz; gap 1.0mm; laser power 3200W; welding speed 4.8m / min; wire feeding speed 11.2m / min.

Embodiment 2

[0049] Select 1.6mm thick SiC with 17% volume fraction p / 2009Al composite material is used as the test plate to be welded, and the welding is carried out according to the above-mentioned swing laser wire-filled welding method of large-gap butt joint of aluminum alloy thin plates. The welding parameters are as follows: the welding wire is 5356 aluminum alloy welding wire; Amplitude 1.0mm; swing frequency 200Hz; gap 1.2mm; laser power 3200W; welding speed 4.8m / min; wire feeding speed 11.2m / min.

Embodiment 3

[0051] Select 1.6mm thick SiC with 17% volume fraction p / 2009Al composite material is used as the test plate to be welded, and the welding is carried out according to the above-mentioned swing laser wire-filled welding method of large-gap butt joint of aluminum alloy thin plates. The welding parameters are as follows: the welding wire is 2319 aluminum alloy welding wire; Amplitude 1.0mm; swing frequency 200Hz; gap 1.0mm; laser power 3500W; welding speed 4.8m / min; wire feeding speed 9.6m / min.

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Abstract

The invention discloses a method for butt jointing of aluminum alloy thin plates with a large gap, which comprises the following steps: firstly preparing two aluminum alloy thin plates, and reserving a gap between the butt joint surfaces of the two aluminum alloy thin plates; Set the laser head, wire feed nozzle and shielding gas nozzle; and preset the first lead plate at the welding start end of the gap, and use the laser beam to form a molten pool on the first lead plate, and then introduce the molten pool into the welding start end of the gap; then The wire feed nozzle and the laser head correspond to the gap and travel in the same direction. The aluminum alloy welding wire is heated and melted by the laser beam to fill the entire gap, and the welding of the two aluminum alloy sheets is completed. Due to the reserved gap, the whole welding process can reduce the melting amount of the aluminum alloy sheet by the laser beam as much as possible, thereby reducing the dilution rate of the welded joint, reducing the generation of brittle phases of metallurgical reactions, and reducing the porosity of the joint. Realize the welding of conventional aluminum alloys, aluminum matrix composite materials and additively manufactured aluminum alloy sheets.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a method for oscillating laser wire-filling welding of aluminum alloy thin plates with large gap butt joints. Background technique [0002] As a non-ferrous metal structural material, aluminum alloy is widely used for its low density, high specific strength, strong corrosion resistance, excellent electrical and thermal conductivity and other properties. With the development of modern science and technology such as aerospace, energy, ocean engineering, and transportation, people have put forward higher requirements for material performance, and various new aluminum alloy materials and new aluminum alloy manufacturing technologies have also emerged as the times require. Among them are new aluminum alloy materials represented by silicon carbide reinforced aluminum matrix composite materials, and new manufacturing technologies represented by 3D printing technology. For example: sil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/211B23K26/70
CPCB23K26/211B23K26/702B23K2101/18B23K2103/10
Inventor 吴世凯齐恩语崔旭建张钧翀秦文斌
Owner 北京金炬科技有限公司
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