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Al-Zn-Mg aluminum alloy welding wire for arc additive manufacturing and preparation method of Al-Zn-Mg aluminum alloy welding wire

An aluminum alloy welding wire and additive manufacturing technology, applied in the direction of additive processing, etc., can solve the problems of large size deviation of welding wire, easy generation of scraping, increased pore content, etc., and achieve small size deviation, small thermal cracking tendency, and excellent plasticity Effect

Active Publication Date: 2020-07-14
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The poor surface finish of the welding wire will lead to the moisture absorption of the welding wire, which will increase the content of pores in the deposit; the large deviation of the welding wire size will easily generate scrapings and block the contact tip

Method used

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  • Al-Zn-Mg aluminum alloy welding wire for arc additive manufacturing and preparation method of Al-Zn-Mg aluminum alloy welding wire
  • Al-Zn-Mg aluminum alloy welding wire for arc additive manufacturing and preparation method of Al-Zn-Mg aluminum alloy welding wire
  • Al-Zn-Mg aluminum alloy welding wire for arc additive manufacturing and preparation method of Al-Zn-Mg aluminum alloy welding wire

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preparation example Construction

[0032] The preparation method of the Al-Zn-Mg series aluminum alloy welding wire used for arc additive manufacturing according to the present invention comprises the following steps:

[0033] 1) Weighing aluminum ingots, zinc ingots and magnesium ingots, and then treating the surfaces of the aluminum ingots, zinc ingots and magnesium ingots;

[0034] 2) Melting the aluminum ingots, adding zinc ingots and magnesium ingots in turn, stirring and melting, then carrying out chloride refining and rotating argon blowing on the melt, and then removing slag from the melt;

[0035] 3) cooling the melt, and then casting it into an ingot;

[0036] 4) remove the oxide skin on the surface of the ingot, and then carry out homogenization treatment;

[0037] 5) Extruding, drawing, mechanically scraping and packaging the ingot processed in step 4) in sequence to obtain an Al-Zn-Mg series aluminum alloy welding wire for arc additive manufacturing.

[0038] The specific process of treating the ...

Embodiment 1

[0051] The preparation method of the Al-Zn-Mg series aluminum alloy welding wire used for arc additive manufacturing according to the present invention comprises the following steps:

[0052]1) Weighing aluminum ingots, zinc ingots and magnesium ingots, and then treating the surfaces of the aluminum ingots, zinc ingots and magnesium ingots;

[0053] The specific process of treating the surface of aluminum ingots, zinc ingots and magnesium ingots in step 1) is: sand the surfaces of aluminum ingots, zinc ingots and magnesium ingots with sandpaper, and then clean them with acetone to remove the aluminum ingots, zinc ingots and magnesium ingots. Oil and impurities on the surface of the ingot;

[0054] In step 1), the surfaces of the zinc ingot and the magnesium ingot are treated and wrapped with aluminum foil.

[0055] 2) Melting the aluminum ingots, adding zinc ingots and magnesium ingots in turn, stirring and melting, then carrying out chloride refining and rotating argon blowi...

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Abstract

The invention discloses an Al-Zn-Mg aluminum alloy welding wire for arc additive manufacturing and a preparation method of the Al-Zn-Mg aluminum alloy welding wire. The welding wire is prepared from Zn, Mg, Al and impurity elements. The welding wire contains the components in percentage by mass as follows: 6.25%-6.75% of Zn, 2.25%-2.75% of Mg and less than 0.2% of the impurity elements, wherein the mass percentage of single impurity element is less than 0.1%. The welding wire can be used for arc additive manufacturing and has high deposit strength.

Description

technical field [0001] The invention belongs to the technical field of arc additive manufacturing materials, and relates to an Al-Zn-Mg series aluminum alloy welding wire for arc additive manufacturing and a preparation method thereof. Background technique [0002] Arc additive manufacturing uses metal wire as the raw material, uses the arc as the heat source, scans layer by layer according to the designed trajectory, and finally shapes it. Compared with other additive manufacturing methods that use powder as raw materials, arc additive manufacturing has the advantages of high efficiency and low cost, and has attracted more and more attention. Welding wire is used as the filling material in arc additive manufacturing, and its quality directly determines the performance of additive parts. The poor surface finish of the welding wire will lead to the moisture absorption of the welding wire, which will increase the content of pores in the deposit; the large deviation of the wel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C1/02C22C1/06C22F1/053B33Y70/00
CPCB33Y70/00C22C1/026C22C1/06C22C21/10C22F1/053
Inventor 李森张林杰王祥张乾乾温家浩张海波宁杰张亮亮龙健孙旭张建勋
Owner XI AN JIAOTONG UNIV
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