Medium strength aluminium alloy wire with conductivity of 55% IACS, and preparation method thereof

A technology of aluminum alloy wire and conductivity, which is applied in the direction of metal/alloy conductor, cable/conductor manufacturing, circuit, etc., to achieve the effect of improving strength, saving construction cost and reducing impact

Active Publication Date: 2014-05-28
WUXI HUANENG ELECTRIC CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the high-strength aluminum alloy wires LHA1 and LHA2 widely used in my country have a conductivity of 52.5%IACS and 53%IACS respectively, which has a certain room for improvement compared with the conductivity of ordinary hard aluminum wires of 61%IACS.

Method used

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  • Medium strength aluminium alloy wire with conductivity of 55% IACS, and preparation method thereof
  • Medium strength aluminium alloy wire with conductivity of 55% IACS, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A high-strength aluminum alloy wire with an electrical conductivity of 55% IACS, the proportion of which is as follows by weight percentage: iron 0.16%-0.22%, silicon 0.48%-0.54%, magnesium 0.62%-0.67%, boron 0.01%-0.02% , Ytterbium 0.02%-0.05%, the rest is aluminum.

[0050] The preparation method of the high-strength aluminum alloy wire with the conductivity of 55%IACS, the steps are as follows:

[0051] (1) Material selection: by weight percentage:

[0052] a. Selection of aluminum ingot: choose 8 tons of aluminum ingot with grade Al99.70, Si 0.08%; Fe 0.15%; Cu 0.002%; Ti+Mn+Cr+V 0.015%; other impurities ≤0.03%; aluminum;

[0053] b. Aluminum-iron master alloy: aluminum-iron master alloy 52kg, Fe 5%; Si 0.16%; Cu 0.008%; Ti+Mn+Cr+V≤0.03%; other impurities ≤0.03%; the rest are aluminum;

[0054] c. Aluminum-silicon master alloy: 335kg of aluminum-silicon master alloy, Si 10%; Fe 0.18%; Cu 0.004%; Ti+Mn+Cr+V≤0.052%; other impurities ≤0.03%; the rest are aluminum; ...

Embodiment 2

[0079] A high-strength aluminum alloy wire with a conductivity of 55% IACS, the proportion of which is as follows by weight percentage: iron 0.16%-0.22%, silicon 0.48%-0.54%, magnesium 0.62%-0.67%, boron 0.01%-0.02% , Ytterbium 0.02%-0.05%, the rest is aluminum.

[0080] The preparation method of the high-strength aluminum alloy wire with the conductivity of 55%IACS, the steps are as follows:

[0081] (1) Material selection: by weight percentage:

[0082] a. Selection of aluminum ingots: Select 7.5 tons of aluminum ingots with the grade Al99.60 to ensure that in the molten aluminum melted from aluminum ingots: Si 0.12%; Fe 0.19%; Cu 0.009%; Ti+Mn+Cr+V 0.02 %; other impurity content ≤ 0.03%; the rest are aluminum;

[0083] b. Aluminum-iron master alloy: 10kg of aluminum-iron master alloy, Fe 5%; Si 0.18%; Cu 0.008%; Ti+Mn+Cr+V≤0.03%; other impurities ≤0.03%; the rest are aluminum;

[0084] c. Aluminum-silicon master alloy: 305kg of aluminum-silicon master alloy, Si 10%; Fe 0...

Embodiment 3

[0109] A high-strength aluminum alloy wire with an electrical conductivity of 55% IACS, the formula ratio is as follows by weight percentage: 0.2% iron, 0.51% silicon, 0.66% magnesium, 0.015% boron, 0.04% ytterbium, and the rest is aluminum.

[0110] The preparation method of the high-strength aluminum alloy wire with the conductivity of 55%IACS, the steps are as follows:

[0111] (1) Material selection: by weight percentage:

[0112] a. Selection of aluminum ingots: ensure that Si≤0.16%; Fe≤0.20%; Cu≤0.01%; Ti+Mn+Cr+V≤0.02%; other impurity content≤0.03% in molten aluminum melted from aluminum ingots ; The rest are aluminum;

[0113] b. Aluminum-iron master alloy: Fe 5%; Si≤0.2%; Cu≤0.1%; Ti+Mn+Cr+V≤0.1%; other impurities ≤0.03%; the rest are aluminum;

[0114] c. Aluminum-silicon master alloy: Si 10%; Fe≤0.2%; Cu≤0.1%; Ti+Mn+Cr+V≤0.1%; other impurities ≤0.03%; the rest are aluminum;

[0115] d. Aluminum boron master alloy: B 3%; Si ≤ 0.2%; Fe ≤ 0.4%; Cu ≤ 0.01%; other impu...

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Abstract

The invention relates to a medium strength aluminium alloy wire with conductivity of 55% IACS, and a preparation method thereof, and belongs to the field of alloy manufacturing technology. The alloy elements comprise, by weight, 0.16%-0.22% of iron, 0.48%-0.54% of silicon, 0.62%-0.67% of magnesium, 0.01%-0.02% of boron and 0.02%-0.05% of ytterbium, with the balance being aluminium. The medium strength aluminium alloy wire with a product conductivity higher than or equal to 55% IACS and tensile strength higher than or equal to 315 MPa is obtained by processes of selecting materials, smelting liquid aluminium, adjusting liquid aluminium ingredients, carrying out purifying treatment, deslagging, standing with heat preservation, degassing, filtering with heat preservation, casting and crystallizing, rolling an aluminum rod, drawing and aging. The wire and cable produced by using the aluminium alloy can be erected continuously by a conventional construction process. In a circuit operation process, circuit loss can be reduced; construction fee can be reduced; and enormous economic benefits and social benefits can be brought about for power transmission and transformation industries.

Description

technical field [0001] The invention relates to a high-strength aluminum alloy wire with a conductivity of 55% IACS and a manufacturing method thereof, in particular to a high-strength and high-conductivity aluminum alloy electric conductor and its manufacturing technology, belonging to the technical field of alloy manufacturing. Background technique [0002] The development and application of wires has a history of more than 100 years, and the development and application of aluminum alloy wires has a history of more than 80 years. [0003] Since the United States officially used pure aluminum wires as overhead stranded wires in 1898 and Aldrey aluminum alloy appeared in 1921, aluminum has been widely used as a conductor in the electrical industry. Aluminum alloy overcomes the disadvantages of low strength, creep, and poor heat resistance of pure aluminum stranded wire, which makes the development of aluminum alloy for electrical conduction more rapid. Aluminum alloy cored ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08H01B1/02H01B13/00
Inventor 杨怀鞠霖周瑾徐俊刘军
Owner WUXI HUANENG ELECTRIC CABLE
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