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Aluminum alloy welding wire and preparation method thereof

An aluminum alloy welding wire, weight percentage technology, applied in welding equipment, metal processing equipment, welding medium, etc., can solve the problems of easy cracks in the weld, poor degassing effect of aluminum alloy melting, and large thermal expansion coefficient of aluminum alloy. , to achieve the effects of smooth joint structure transition, improved fine grain strengthening, and good welding performance

Inactive Publication Date: 2016-12-21
安徽飞弧焊业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the preparation process of aluminum alloy welding wire, the degassing effect of aluminum alloy melting is not good, which will make the hydrogen content of aluminum alloy welding wire high, resulting in more pores in the welding process, and aluminum alloy has the defect of large thermal expansion coefficient. Cracks are prone to occur at the weld

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] An aluminum alloy welding wire proposed by the present invention, its composition includes by weight percentage: Mg: 6%, Ti: 0.1%, Cr: 0.3%, Mn: 0.08%, Sc: 0.2%, Nd: 0.1%, Mo: 1 -2%, W: 2%, V: 0.2%, Bi: 0.01%, Cu: 5%, Zr: 0.25%, Ag: 0.25%, Si≤0.25%, Fe≤0.2%, Zn≤0.20%, others The content of individual impurity elements is ≤0.05%, the total content of other impurity elements is ≤0.15%, and the balance is Al.

[0015] The present invention also proposes a method for preparing the aluminum alloy welding wire, including smelting, refining, casting, homogenizing, extruding, drawing and surface treatment; wherein, the smelting process includes adding 0.12% of the total weight of the smelting liquid to refine agent.

Embodiment 2

[0017] An aluminum alloy welding wire proposed by the present invention, its composition includes by weight percentage: Mg: 5.5%, Ti: 0.15%, Cr: 0.1%, Mn: 0.18%, Sc: 0.05%, Nd: 0.18%, Mo: 1 %, W: 2%, V: 0.8%, Bi: 0.05%, Cu: 2%, Zr: 0.35%, Ag: 0.1%, Si≤0.25%, Fe≤0.2%, Zn≤0.20%, other impurity elements Individual content ≤ 0.05%, total content of other impurity elements ≤ 0.15%, and the balance is Al.

[0018] The present invention also proposes a method for preparing the aluminum alloy welding wire, which includes smelting, refining, casting, homogenizing, extruding, drawing and surface treatment; wherein, the smelting process includes adding 0.2% of the total weight of the smelting liquid for refining agent.

Embodiment 3

[0020] An aluminum alloy welding wire proposed by the present invention, its composition includes by weight percentage: Mg: 5.6%, Ti: 0.14%, Cr: 0.15%, Mn: 0.12%, Sc: 0.18%, Nd: 0.12%, Mo: 1.2 %, W: 1.78%, V: 0.38%, Bi: 0.04%, Cu: 2.8%, Zr: 0.29%, Ag: 0.21%, Si≤0.25%, Fe≤0.2%, Zn≤0.20%, other impurity elements Individual content ≤ 0.05%, total content of other impurity elements ≤ 0.15%, the balance is Al;

[0021] The present invention also proposes a method for preparing the aluminum alloy welding wire, which includes smelting, refining, casting, homogenizing, extruding, drawing and surface treatment; wherein, the smelting process includes adding 0.13% of the total weight of the smelting liquid for refining Its raw materials of the refining agent include by weight: 20 parts of potassium chloride, 35 parts of barium chloride, 10 parts of aluminum fluoride, 15 parts of potassium fluoroaluminate, 2 parts of potassium carbonate, 3 parts of potassium sulfate, chlorination 2 parts...

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Abstract

The invention discloses an aluminum alloy welding wire and a preparation method thereof. The aluminum alloy welding wire consists of the following components in percentage by weight: 5.5-6% of Mg, 0.1-0.15% of Ti, 0.1-0.3% of Cr, 0.08-0.18% of Mn, 0.05-0.2% of Sc, 0.1-0.18% of Nd, 1-2% of Mo, 1-2% of W, 0.2-0.8% of V, 0.01-0.05% of Bi, 2-5% of Cu, 0.25-0.35% of Zr, 0.1-0.25% of Ag, less than or equal to 0.25% of Si, less than or equal to 0.2% of Fe, less than or equal to 0.20% of Zn, less than or equal to 0.15% of other impurity elements each being less than or equal to 0.05%, and the balance Al. The aluminum alloy welding wire disclosed by the invention is compact in tissue and is smooth in surface; and tensile strength, cracking resistance, wear resistance and corrosion resistance of a welding seam are good.

Description

technical field [0001] The invention relates to the technical field of welding wire, in particular to an aluminum alloy welding wire and a preparation method thereof. Background technique [0002] With the development of welding technology, aluminum and aluminum alloy welded structures have been widely used in civil and military fields, such as various chemical containers, vehicles, ships, aircraft, space probes, rockets, etc. Among them, the welding wire is an important factor affecting the weld metal structure, composition, solid-liquidus temperature, corrosion resistance of the weld, thermal cracking and mechanical properties of the base metal near the seam. The internal quality of aluminum alloy welding wire depends largely on the quality of the original aluminum. In the preparation process of aluminum alloy welding wire, the degassing effect of aluminum alloy melting is not good, which will make the hydrogen content of aluminum alloy welding wire high, resulting in mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/28B23K35/40C22C1/06C22C21/08
CPCB23K35/288B23K35/40C22C1/06C22C21/08
Inventor 卢齐元
Owner 安徽飞弧焊业股份有限公司
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