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High-strength, high-conductivity, intergranular corrosion-resistant aluminum alloy and preparation method thereof

An intergranular corrosion and aluminum alloy technology, applied in the field of alloys, can solve the problems of limited service life and low tensile strength of wires, and achieve the effects of improving corrosion resistance, increasing electrical conductivity, and ensuring stability

Active Publication Date: 2022-05-10
JIANGSU HENGTONG ELECTRICAL SPECIAL WIRE CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the difference in material formula, manufacturing process and subsequent processing methods, the tensile strength of the 6201 aluminum alloy material currently used for overhead wires is low, the tensile strength is below 320MPa, and the electrical conductivity is below 52.5IACS. Intergranular corrosion limits the service life of the wire

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  • High-strength, high-conductivity, intergranular corrosion-resistant aluminum alloy and preparation method thereof

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Embodiment

[0040]The invention provides a high-strength and high-conductivity intergranular corrosion aluminum alloy wire, which includes the following components in mass percentages based on its total weight: Si 0.50-0.55wt%; Fe 0.24-0.26wt%; Mn 0.00001-0.001 wt%; Mg0.62~0.66wt%; Cr≤0.001wt%; V≤0.001wt%; Ti 0.008~0.015wt%; Be0.008~0.01wt%; and unavoidable impurities.

[0041] The preparation method of the high-strength and high-conductivity aluminum alloy wire of the present invention comprises the following steps:

[0042] (1) Melting:

[0043] Put 99.80% aluminum ingots into the melting furnace for melting. After melting, detect the vanadium content of the molten aluminum according to the direct-reading spectrometer, and put in the aluminum-boron alloy according to 5.5kg / T (weight of the molten aluminum) to remove the vanadium content in the molten aluminum. The temperature of the molten alloy is raised to 734°C, adding a refining agent according to 0.1% of the weight of the molten ...

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Abstract

The invention discloses a high-strength and high-conductivity intergranular corrosion aluminum alloy, which comprises the following components: Si 0.50-0.55wt%, Fe 0.24-0.26wt%, Mn 0.00001-0.001wt%, Mg 0.62-0.66wt% , Cr≤0.001wt%, V≤0.001wt%, Ti 0.008-0.015wt%, Be 0.008-0.01wt%, Y 0.01-0.02wt%, and the balance of Al. The invention also discloses a preparation method of the high-strength and high-conductivity intergranular corrosion aluminum alloy. The high-strength and high-conductivity aluminum alloy of the invention has a tensile strength of 320-350MPa and an electrical conductivity of 55IACS.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a high-strength, high-conductivity and high-conductivity intergranular corrosion aluminum alloy and a preparation method thereof. Background technique [0002] At present, the aluminum alloys used for overhead wires mainly use 6XXX series Al-Mg-Si series aluminum alloy materials, which are heat-treatable aluminum alloys and have the advantages of high specific strength, low density, and good electrical conductivity. The performance of aluminum alloy wire is mainly affected by alloying elements, processing technology and heat treatment technology. Due to the difference in material formula, manufacturing process and subsequent processing methods, the tensile strength of the 6201 aluminum alloy material currently used for overhead wires is low, the tensile strength is below 320MPa, and the electrical conductivity is below 52.5IACS. Intergranular corrosion limits the useful life of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C1/03C22F1/047C21D8/06C21D1/18C22C1/06C22B9/05C22B9/02B21C37/04
CPCC22C21/08C22C1/026C22C1/03C22F1/047C21D8/06C22F1/002C22C1/06C22B9/05C22B9/023B21C37/047
Inventor 张桓赵立洋段妍彤乔恒罗志涛张军金榕
Owner JIANGSU HENGTONG ELECTRICAL SPECIAL WIRE CO LTD