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High-strength and corrosion-resistant Al-Mg-Zr aluminum alloy welding stick and preparation method thereof

An aluminum alloy welding wire, corrosion-resistant technology, applied in welding equipment, metal processing equipment, welding medium, etc., to ensure smooth implementation, low thermal cracking tendency, and good formability.

Active Publication Date: 2019-07-02
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The total amount of impurity elements≤0.15%

Method used

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  • High-strength and corrosion-resistant Al-Mg-Zr aluminum alloy welding stick and preparation method thereof
  • High-strength and corrosion-resistant Al-Mg-Zr aluminum alloy welding stick and preparation method thereof
  • High-strength and corrosion-resistant Al-Mg-Zr aluminum alloy welding stick and preparation method thereof

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Experimental program
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Effect test

Embodiment

[0033] Table 1 shows the mass percentages of alloy elements in the high-strength corrosion-resistant aluminum alloy welding wire proposed by the present invention.

[0034] Table 1 Mass percentage of alloying elements

[0035] Example Mg Zr mn Ti sc Ag be Y Fe Si 1 6.1 1.2 0.8 0.02 0.05 0.3 0.0003 0.002 0.03 0.02 2 6.4 1.0 1.0 0.02 0.08 - 0.0003 0.002 0.05 0.01 3 6.8 1.0 0.6 0.03 0.02 0.4 0.0003 0.003 0.03 0.01 4 5.6 0.8 0.5 0.05 - 0.4 0.0002 0.002 0.03 0.02 5 5.8 1.0 0.9 0.02 - - 0.0002 0.003 0.02 0.02 6 6.5 1.1 0.8 0.03 0.10 0.5 0.0003 0.003 0.05 0.01 7 5.9 1.2 1.1 0.03 0.12 - 0.0003 0.002 0.03 0.02

[0036] The implementation is as follows:

[0037] Raise the temperature in the atomization furnace to melt the raw materials except Mg, and then atomize it into powder at a temperature of 950-1050°C. Remove the particles above 150 mesh from the atomi...

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Abstract

The invention discloses a high-strength and corrosion-resistant Al-Mg-Zr aluminum alloy welding stick and a preparation method thereof. The proportion of alloy elements in an Al-Mg-Zr alloy is controlled in an optimized manner, and meanwhile, powder preparation, hot isostatic pressing, extrusion, continuous extrusion and drawing processes are adopted for preparing the welding stick with the fine crystalline grains, uniform structure and the good comprehensive performance. The novel alloy welding stick has the good formability and the low hot cracking tendency in the TIG or MIG welding formingprocess, a welding joint has the high strength and excellent corrosion resistance, the welding stick can be used for welding corrosion-resistant Al-Mg series alloys and high-strength Al-Zr-Mg series alloys, welding requirements of all-aluminum ship and warship bodies and armor protection decks are met, and the application prospects are broad.

Description

technical field [0001] The invention relates to a high-strength, corrosion-resistant Al-Mg-Zr aluminum alloy welding wire and a preparation method thereof. The welding wire has good formability and low thermal cracking tendency in the TIG or MIG welding forming process, and the welded joint has high strength and excellent Corrosion resistance meets the welding requirements of all-aluminum ship hulls and weapon protective armor plates. It belongs to the field of non-ferrous metals and their processing. Background technique [0002] With the increasing maturity of aluminum alloy TIG and MIG welding technology, aluminum alloy welded structures have been widely used in military and civilian fields. At present, in the field of military industry, the commonly used aluminum alloy welding wires are 5087, 5183, 5356 and other grades, the weld strength is at the level of 280MPa, and the weld strength of the high-magnesium alloy welding wire is at the level of 320MPa. [0003] In the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/28B23K35/40
CPCB23K35/0261B23K35/286B23K35/40
Inventor 刘惠李国爱陈军洲孙进宝王少华高文林唐鹏钧陆政
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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