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A kind of aluminum alloy laser-tig composite wire filling welding method

A welding method and technology of aluminum alloy, applied in laser welding equipment, welding equipment, welding/welding/cutting items, etc., can solve the problems of unstable welding process, large TIG current, large laser power and TIG current, etc., to avoid Welding Defects, Guaranteed Efficiency, Reduced Effect of Heat Affected Zone

Active Publication Date: 2016-02-24
SHENYANG FORTUNE PRECISION EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] (1) Wang Bo, Ran Guowei, Xue Guoyu, High-strength aluminum alloy laser-assisted TIG arc hybrid welding process and joint performance [J], Welding Technology, 2012, Vol. 41, No. 7, pp. 22-26, disclosed a high-strength aluminum alloy laser The assisted TIG arc composite filler wire welding method uses 500W laser and 350ATIG current to realize the welding of 6mm aluminum alloy, but the laser power and TIG current used in this method are relatively large, and a large heat-affected zone will be generated at the weld seam. prone to defect generation
[0005] (2) Ran Guowei, Song Yonglun, Yan Sibo, Lin Jiangbo, 2219 aluminum alloy composite heat source welding process and joint performance [J], Journal of Welding, 2011, volume 32, issue 9, pages 25-29, disclosed a 2219 aluminum alloy laser- The TIG compound heat source wire-filling welding method uses 500W laser and 410A / 405ATIG current to realize the welding of 6mm2219 aluminum alloy, but the TIG current used by this method is too large, which makes the welding process extremely unstable, and the excessive energy input makes The area of ​​the oxide layer expands, reducing the energy efficiency and stability of laser-TIG hybrid welding

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  • A kind of aluminum alloy laser-tig composite wire filling welding method
  • A kind of aluminum alloy laser-tig composite wire filling welding method

Examples

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Effect test

Embodiment 1

[0022] Example 1: Taking 5mm thick 6061 aluminum alloy 1 as an example, before welding, 5mm thick 6061 aluminum alloy 1 is V-shaped grooved, the depth H of the V-shaped groove is 3mm, and the unilateral angle α is 45°; The 5mm thick 6061 aluminum alloy of the type groove is butt-jointed without gaps, and the welding wire 2 with a diameter of 1.2mm is selected; the relative positions of the laser 3, TIG welding torch 4 and wire feeding nozzle 5 are adjusted to realize simultaneous lifting of the laser 3, TIG welding torch 4 and wire feeding nozzle 5.

[0023] The welding process parameters of the first layer of wire-filled welding are 450W laser power, TIG current 150A, interlayer temperature 310°, and interlayer lifting height 0.5mm; the second layer and the first layer welding process parameters are the same, laser power 450W, TIG current 150A, The interlayer temperature is 310°, and the interlayer lifting height is 0.5mm; the laser power of the third layer is 380W, the TIG cu...

Embodiment 2

[0024] Example 2: Taking the 4mm thick 6061 aluminum alloy 1 as an example, a 4mm thick 6061 aluminum alloy 1 is made into a V-shaped groove before welding, the depth H of the V-shaped groove is 2.5mm, and the unilateral angle α is 42°; 4mm thick 6061 aluminum alloy with V-shaped groove butt joint without gaps, choose welding wire 2 with a diameter of 1.0mm; adjust the relative positions of laser 3, TIG welding torch 4 and wire feeding nozzle 5, and realize simultaneous lifting of laser 3, TIG welding torch 4 and wire feeding nozzle 5 .

[0025] The welding process parameters of the first layer of wire filler welding are 400W laser power, TIG current 160A, interlayer temperature 300°, interlayer lifting height 0.48mm; the second layer and the first layer welding process parameters are the same; the third layer laser power is 350W, TIG The current is 140A, the interlayer temperature is 270°, and the interlayer lifting height is 0.35mm; the welding process parameters of the 4th,...

Embodiment 3

[0026] Example 3: Taking the 6mm thick 6061 aluminum alloy 1 as an example, a 6mm thick 6061 aluminum alloy 1 is opened with a V-shaped groove before welding, the depth H of the V-shaped groove is 3.5mm, and the unilateral angle α is 43°; 6mm thick 6061 aluminum alloy with V-shaped groove butt joint without gaps, choose welding wire 2 with a diameter of 1.4mm; adjust the relative positions of laser 3, TIG welding torch 4 and wire feeding nozzle 5, and realize simultaneous lifting of laser 3, TIG welding torch 4 and wire feeding nozzle 5 .

[0027] Welding process parameters of the first layer of wire-fill welding: laser power 430W, TIG current 155A, interlayer temperature 330°, interlayer lifting height 0.53mm; third layer laser power 380W, TIG current 145A, interlayer temperature 290°, interlayer lifting height The height is 0.45mm; the welding process parameters of the 4th, 5th and 6th layers are the same as those of the 3rd layer; by adding 6 layers of welding wire 2, the s...

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Abstract

The invention discloses an aluminium alloy laser-TIG composite filler rod welding method. The aluminium alloy laser-TIG composite filler rod welding method comprises the following steps: forming V-shaped grooves on a plurality of pieces of aluminium alloy before welding, and butting the pieces of aluminium alloy with the V-shaped grooves in a no-clearance manner, wherein the diameter of a welding stick is 1.0-1.4 mm; simultaneously lifting a laser, a TIG welding gun and a wire feeding mouth during welding, controlling the welding parameters of the first layer and the second layer to be the same, controlling the welding parameters from the third layer to the last layer to be the same, welding the filler rods in the fifth layer, the sixth layer and the seventh layer, and finally realizing welding formation of the aluminium alloy laser-TIG composite filler rods. According to the invention, the laser power and the TIG current are effectively reduced through multiple layers of filer rods, the purpose that a small-HAZ (Heat Affected Zone) welding joint is acquired in the aluminium alloy welding process can be guaranteed to the maximum extent, and welding defects are effectively avoided; through accurate control of the interlayer temperature and the interlayer lifting height, the oxidation layer area coverage of aluminium alloy in the multi-layer welding process can be effectively controlled, and stable welding of multi-layer composite filter rods of aluminium alloy with the thickness of 4-6 mm can be realized.

Description

technical field [0001] The invention belongs to the technical field of welding and forming of aluminum alloys used in the integrated circuit industry, and relates to an aluminum alloy laser-TIG composite wire-filling welding method. It is suitable for medium and thick plate aluminum alloy materials, multi-layer welding and forming of composite filler wire. Background technique [0002] In recent years, with the rapid development of the integrated circuit equipment manufacturing industry, the role and status of many large and medium-thick aluminum alloy parts in IC equipment and other semiconductor equipment have become increasingly prominent. One of the key technologies in the manufacture of thick aluminum alloy parts, especially the range of heat-affected zones of aluminum alloy welded structures and the probability of defects are directly related to the stability and reliability of aluminum alloy parts. [0003] At present, the advanced welding method used in medium-thick...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/348
CPCB23K26/348B23K2103/10
Inventor 吴东江马广义张楚翔李茂程唐伟东吴敏杰
Owner SHENYANG FORTUNE PRECISION EQUIP CO LTD
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