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High-conductivity corrosion-resistant aluminum alloy and preparation method thereof

An aluminum alloy and corrosion-resistant technology, which is applied in the field of aluminum alloys, can solve the problems of not reflecting corrosion resistance, increasing material production control costs, and poor product quality uniformity, so as to improve strength and corrosion resistance, and compact microstructure Uniformity, porosity and oxide content reduction effect

Active Publication Date: 2019-01-08
东莞市东兴铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Only when Mn≤0.005%, Cr≤0.007% and Cu≤0.003%, the aluminum alloy material has a good electrical conductivity of more than 58.1% and good strength, but at the same time, it is difficult to avoid Mn, Cr and The addition of impurities such as Cu will not only greatly increase the production control cost of materials, but also the quality of the produced products will be poor in uniformity, and the corrosion resistance will not be reflected; and the long-term treatment will also increase the burden on production

Method used

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  • High-conductivity corrosion-resistant aluminum alloy and preparation method thereof
  • High-conductivity corrosion-resistant aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A highly conductive and corrosion-resistant aluminum alloy consisting of the following elements by weight percentage:

[0036] Si:0.4%;Mg:0.8%;B:0.02%;Ti:0.015%;Sr:0.0075%;Pr:0.003%;Er:0.06%;Fe:0.3%;Mn:0.005%;Cr:0.05%; Zr: 0.01%; Cu: 0.035%; Zn: 0.05%; the remainder is aluminum and unavoidable impurities.

[0037]Wherein, the unavoidable impurities are not more than 0.1wt%, and each element in the unavoidable impurities is not more than 0.03wt%.

[0038] A method for preparing a highly conductive and corrosion-resistant aluminum alloy as described above comprises the following steps:

[0039] (1) Heat the aluminum ingot to 700°C to form aluminum liquid, and add Al-Si master alloy, Al-B master alloy, Al-Ti master alloy, Al-Sr master alloy, Al- Pr master alloy, Al-Er master alloy, Al-Fe master alloy, Al-Mn master alloy, Al-Cr master alloy, Al-Zr master alloy, Al-Cu master alloy, Al-Zn master alloy and Mg are mixed, Prepare alloy liquid;

[0040] (2) heating the alloy ...

Embodiment 2

[0050] A highly conductive and corrosion-resistant aluminum alloy consisting of the following elements by weight percentage:

[0051] Si: 0.3%; Mg: 0.6%; B:0.01%; Ti: 0.01%; Sr: 0.005%; Pr: 0.001%; ​​Er: 0.02%; Fe: 0.2%; Mn: 0.01%; Cr: 0.01%; Zr: 0.005%; Cu: 0.02%; Zn: 0.03%; the remainder is aluminum and unavoidable impurities.

[0052] Wherein, the unavoidable impurities are not more than 0.1wt%, and each element in the unavoidable impurities is not more than 0.03wt%.

[0053] A method for preparing a highly conductive and corrosion-resistant aluminum alloy as described above comprises the following steps:

[0054] (1) Heat the aluminum ingot to 700°C to form aluminum liquid, and add Al-Si master alloy, Al-B master alloy, Al-Ti master alloy, Al-Sr master alloy, Al- Pr master alloy, Al-Er master alloy, Al-Fe master alloy, Al-Mn master alloy, Al-Cr master alloy, Al-Zr master alloy, Al-Cu master alloy, Al-Zn master alloy and Mg are mixed, Prepare alloy liquid;

[0055] (2) ...

Embodiment 3

[0065] A highly conductive and corrosion-resistant aluminum alloy consisting of the following elements by weight percentage:

[0066] Si: 0.6%; Mg: 0.9%; B: 0.04%; Ti: 0.02%; Sr: 0.01%; Pr: 0.005%; Er: 0.1%; Fe: 0.4%; Mn: 0.02%; Cr: 0.02%; Zr: 0.015%; Cu: 0.05%; Zn: 0.07%; the remainder is aluminum and unavoidable impurities.

[0067] Wherein, the unavoidable impurities are not more than 0.1wt%, and each element in the unavoidable impurities is not more than 0.03wt%.

[0068] A method for preparing a highly conductive and corrosion-resistant aluminum alloy as described above comprises the following steps:

[0069] (1) Heat the aluminum ingot to 680°C to form molten aluminum, and add Al-Si master alloy, Al-B master alloy, Al-Ti master alloy, Al-Sr master alloy, Al- Pr master alloy, Al-Er master alloy, Al-Fe master alloy, Al-Mn master alloy, Al-Cr master alloy, Al-Zr master alloy, Al-Cu master alloy, Al-Zn master alloy and Mg are mixed, Prepare alloy liquid;

[0070] (2) hea...

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Abstract

The invention relates to the technical field of aluminum alloys, and particularly relates to a high-conductivity corrosion-resistant aluminum alloy and a preparation method thereof. The aluminum alloycomprises the following elements by weight percentage: 0.3-0.6% of Si, 0.6-0.9% of Mg, 0.01-0.04% of B, 0.01-0.02% of Ti, 0.005-0.01% of Sr, 0.001-0.005% of Pr, 0.02-0.1% of Er, 0.2-0.4% of Fe, 0.01-0.02% of Mn, 0.01-0.02% of Cr, 0.005-0.015% of Zr, 0.02-0.05% of Cu, 0.03-0.07% of Zn and the balance of aluminum and unavoidable impurities. The aluminum alloy is relatively high in tensile strength(240 MPa or more than 240 MPa), yield strength, electric conductivity (58% or more than 58%) and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a highly conductive and corrosion-resistant aluminum alloy and a preparation method thereof. Background technique [0002] At present, the grades and states of conductive alloy products produced by extrusion technology in China mainly include 6063-T5, 6063-T6, 6101-T6, 6101B-T6, 6101B-F, 6101-T65, of which 6063-T5, 6063-T6, The tensile strength of 6101-T6 and 6101B-T6 aluminum alloy extrusions is usually 170-260Mpa, but the volume conductivity at 20°C is below 56.5% IACS; the conductivity of 6101BF extrusions is above 56.5% IACS, but The tensile strength is usually below 130MPa. Therefore, in actual production, it is difficult for 6063-T5, 6063-T6, 6101-T6, 6101B-T6, and 6101B-F alloys to simultaneously meet the design requirements for conductive aluminum row products that require high electrical conductivity, mechanical properties, and corrosion resistance. [0003] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/03C22F1/047
CPCC22C1/026C22C1/03C22C21/08C22F1/047
Inventor 何旭坤
Owner 东莞市东兴铝业有限公司
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