High-strength anti-cracking aluminum alloy welding wire for welding joint

An aluminum alloy welding wire and welding joint technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., can solve problems affecting the normal use of metal components, poor cracking resistance and corrosion resistance, and easy occurrence of pores in deposited metal. and other problems, to achieve fast, effective and long-term metamorphic effect, obvious metamorphic effect, and the effect of promoting new phase nucleation

Inactive Publication Date: 2017-09-29
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

With the continuous development of life and the national economy, the demand for aluminum alloy welding components is increasing, the selection of materials is continuously optimized, and the requirements for the quality of welding wire are becoming more and more stringent. The quality of welding and the level of welding efficiency are determined by welding Depending on the material and welding process, the internal quality of aluminum alloy welding wire depends largely on the quality of the original aluminum material. At present, the welding wire for aluminum alloy still has unreasonable components, large spatter during welding, and pores in the deposited metal are prone to occur. The joint strength is small, the crack resistance and corrosion resistance are poor, which affects the normal use of metal components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A high-strength anti-cracking aluminum alloy welding wire for welding joints proposed by the present invention comprises the following components by mass fraction: Mg: 2%, B: 0.25%, Li: 0.1%, Cu: 0.35%, Si: 0.25% , Ti: 0.3%, Cr: 0.12%, Mn: 0.4%, Fe: 0.15%, V: 0.3%, Sr: 0.1%, Na: 0.25%, Zr: 0.05%, Nb: 0.1%, Mo: 0.15% , Pr: 0.12%, Ce: 0.15%, Nd: 0.12%, and the rest are Al and unavoidable impurities.

Embodiment 2

[0018] A high-strength anti-cracking aluminum alloy welding wire for welding joints proposed by the present invention comprises the following components by mass fraction: Mg: 3%, B: 0.15%, Li: 0.2%, Cu: 0.2%, Si: 0.4% , Ti: 0.2%, Cr: 0.22%, Mn: 0.25%, Fe: 0.25%, V: 0.2%, Sr: 0.2%, Na: 0.15%, Zr: 0.15%, Nb: 0.02%, Mo: 0.25% , Pr: 0.06%, Ce: 0.25%, Nd: 0.05%, and the rest are Al and unavoidable impurities.

Embodiment 3

[0020] A high-strength anti-cracking aluminum alloy welding wire for welding joints proposed by the present invention comprises the following components by mass fraction: Mg: 2.5%, B: 0.2%, Li: 0.15%, Cu: 0.28%, Si: 0.32% , Ti: 0.25%, Cr: 0.16%, Mn: 0.32%, Fe: 0.2%, V: 0.25%, Sr: 0.15%, Na: 0.2%, Zr: 0.1%, Nb: 0.06%, Mo: 0.2% , Pr: 0.09%, Ce: 0.2%, Nd: 0.09%, and the rest are Al and unavoidable impurities.

[0021] Among them, the welding process parameters are as follows: the gas flow rate is 18L / min, the welding voltage is 24V, the welding current is 200A, the wire feeding speed is 12m / min, and the welding speed is 0.75m / min.

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PUM

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Abstract

The invention discloses a high-strength anti-cracking aluminum alloy welding wire for a welded joint. The high-strength anti-cracking aluminum alloy welding wire comprises, by mass, Mg, B, Li, Cu, Si, Ti, Cr, Mn, Fe, V, Sr, Na, Zr, Nb, Mo, Pr, Ce, Nd, and the balance Al and inevitable impurities. The high-strength anti-cracking aluminum alloy welding wire for the welded joint, provided by the invention, is reasonable in component, little in splash in the welding process, compact in deposited metal structure and free of pores and cracks. The welded joint has the advantages of high strength, good anti-cracking property, large base metal bonding strength and the like. The overall performance of a metal component is improved.

Description

technical field [0001] The invention relates to the field of welding wire technology, in particular to a high-strength crack-resistant aluminum alloy welding wire for welding joints. Background technique [0002] Aluminum alloy has good specific strength, corrosion resistance and electrical and thermal conductivity, as well as excellent formability and weldability. It is widely used in aerospace, marine automobile, machinery manufacturing, military chemical industry and other fields. With the continuous development of life and the national economy, the demand for aluminum alloy welding components is increasing, the selection of materials is continuously optimized, and the requirements for the quality of welding wire are becoming more and more stringent. The quality of welding and the level of welding efficiency are determined by welding Depending on the material and welding process, the internal quality of aluminum alloy welding wire depends largely on the quality of the ori...

Claims

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Application Information

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