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Aluminum alloy welding wire and preparation method thereof

An aluminum alloy welding wire and aluminum alloy technology, which is applied in the field of aluminum alloy welding processing, can solve the problems of blackening of the weld surface, unstable quality, affecting the thermal deformation performance of the alloy, etc., to achieve good fatigue resistance, improve smoothness, grain size The effect of refinement

Inactive Publication Date: 2014-04-02
GUANGXI DOCTOR HAIYI INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the aluminum alloy welding wire produced in my country has serious quality instability problems. The main problems are: 1. The aluminum alloy welding wire produced contains more impurities Fe and Si, which will reduce the corrosion resistance and mechanical properties of the alloy. 2. The aluminum alloy welding wire produced also contains impurity element Na, which seriously affects the thermal deformation properties of the alloy, and "Na brittleness" will appear if the Na content exceeds 0.001%. , especially in high-Mg alloys; 3. The hydrogen content of the welding wire is high, and weld pores are prone to appear; 4. There are easy inclusions in the welding wire, resulting in blackening of the weld surface and dirt; these problems are the research of aluminum alloy welding wire and urgent problems to be solved in production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The parts by weight are Mg: 4 parts, Cr: 0.1 parts, Cu: 0.05 parts, Zn: 0.04 parts, Mn: 0.12 parts, and the balance is Al for batching.

[0025] The preparation process of the aluminum alloy welding wire is described by taking the above ingredients as an example.

[0026] (1) Melting and refining: first put aluminum ingots into the melting furnace for smelting, and then add magnesium ingots, zinc ingots, copper ingots, aluminum-chromium master alloys, aluminum-silicon master alloys, aluminum-manganese master alloys, aluminum-titanium-boron master alloys during the smelting process Silk, refining agent and slag removal agent, and the aluminum alloy solution is stirred, and the low-melting point light metal and non-metallic impurities are removed by online degassing; the parts by weight of the refining agent are: KCl: 65 parts, CaF 2 : 7 parts, Na 3 AlF 6 : 10 parts, Mg 2 N 3 : 10 parts, C 2 Cl 6 : 2 parts, rare earth: 0.3 parts.

[0027] (2) Casting: cast the melt...

Embodiment 2

[0035] The parts by weight are Mg: 5 parts, Cr: 0.3 parts, Cu: 0.06 parts, Zn: 0.05 parts, Mn: 0.15 parts, and the balance is Al for batching.

[0036] The preparation process of the aluminum alloy welding wire is described by taking the above ingredients as an example.

[0037] (1) Melting and refining: first put aluminum ingots into the melting furnace for smelting, and then add magnesium ingots, zinc ingots, copper ingots, aluminum-chromium master alloys, aluminum-silicon master alloys, aluminum-manganese master alloys, aluminum-titanium-boron master alloys during the smelting process Silk, refining agent and slag removal agent, and the aluminum alloy solution is stirred, and the low-melting point light metal and non-metallic impurities are removed by online degassing; the parts by weight of the refining agent are: KCl: 70 parts, CaF 2 : 8 parts, Na 3 AlF 6 : 12 parts, Mg 2 N 3 : 14 parts, C 2 Cl 6 : 3 parts, rare earth: 0.4 parts.

[0038] (2) Casting: cast the melt...

Embodiment 3

[0046] The parts by weight are Mg: 6 parts, Cr: 0.3 parts, Cu: 0.08 parts, Zn: 0.07 parts, Mn: 0.16 parts, and the balance is Al for batching.

[0047] The preparation process of the aluminum alloy welding wire is described by taking the above ingredients as an example.

[0048] (1) Melting and refining: first put aluminum ingots into the melting furnace for smelting, and then add magnesium ingots, zinc ingots, copper ingots, aluminum-chromium master alloys, aluminum-silicon master alloys, aluminum-manganese master alloys, aluminum-titanium-boron master alloys during the smelting process Silk, refining agent and slag removal agent, and the aluminum alloy solution is stirred, and the low-melting point light metal and non-metallic impurities are removed by online degassing; the parts by weight of the refining agent are: KCl: 75 parts, CaF 2 : 6 parts, Na 3 AlF 6 : 9 parts, Mg 2 N 3 : 15 parts, C 2 Cl 6 : 4 parts, rare earth: 0.5 parts.

[0049] (2) Casting: cast the melte...

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Abstract

The invention relates to an aluminum alloy welding wire and a preparation method thereof. The aluminum alloy welding wire is characterized by comprising the following chemical components in percentage by weight: 4-6 percent of Mg, 0.1-0.3 percent of Cr, not more than 0.1 percent of Fe and Si, 0.05-0.08 percent of Cu, 0.04-0.07 percent of Zn, 0.12-0.16 percent of Mn and the balance of Al. The preparation method of the aluminum alloy welding wire comprises the steps of: melting and refining, casting, homogenizing, thermally extruding, annealing, drawing, skiving and brightening, packaging and storing. The aluminum alloy welding wire provided by the invention is few in impurities, stable in performance, and small in texture grains, and has the characteristics of fatigue resistance, crack resistance, welding property and the like.

Description

technical field [0001] The invention relates to the field of aluminum alloy welding processing, in particular to an aluminum alloy welding wire and a preparation method thereof. Background technique [0002] Aluminum and aluminum alloys are widely used in home appliances, military, automobile, construction and refrigeration industries due to their small specific gravity, excellent electrical and thermal conductivity and mechanical processing properties. It reduces the weight of products, reduces energy consumption and processing costs Therefore, in today's social production, aluminum is used instead of copper as much as possible. With the extensive application of aluminum alloy and high-efficiency automatic welding technology in high-end military and civilian lightweight equipment, the quality and performance requirements for aluminum alloy welding materials are getting higher and higher. The performance and quality of aluminum alloy welding wire depends not only on the sme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C21/08C22C1/03
Inventor 张聪聪陈荣立
Owner GUANGXI DOCTOR HAIYI INFORMATION TECH
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