Medium strength aluminium alloy wire with conductivity of 60% IACS, and preparation method thereof

A medium-strength aluminum alloy and aluminum alloy wire technology, applied in the direction of metal/alloy conductors, cable/conductor manufacturing, circuits, etc., can solve the problems of large power loss in transmission lines, conductivity is only 57%, and high heat treatment temperature. Effects of reducing line loss, reducing secondary dendrite spacing, and improving strength and electrical conductivity

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

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Problems solved by technology

[0003] Chinese patent CN102041418A discloses a method of manufacturing a medium-strength aluminum alloy wire with a conductivity of 57%, although the strength is greater than 245MPa, its conductivity is only 57% IACS
There is a big gap with the 61% IACS of ordinary duralumin. If it is popularized and applied in the line, it will inevitably lead to a large power loss in the transmission line.
[0004] Chinese patent CN201110030978.9 discloses a method for manufacturing a medium-strength aluminum alloy wire with a conductivity of 59%, introducing 0.02-0.04% copper to limit the further improvement of the conductivity; the heat treatment temperature in the process is as high as 200-220°C, which requires high energy consumption

Method used

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  • Medium strength aluminium alloy wire with conductivity of 60% IACS, and preparation method thereof
  • Medium strength aluminium alloy wire with conductivity of 60% IACS, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A 60% IACS medium-strength aluminum alloy wire with a conductivity of 60%. The formula ratio by weight percentage is as follows: iron 0.16%, silicon 0.24%, magnesium 0.40%, boron 0.01%, rare earth elements 0.08%, and the rest is aluminum.

[0049] The rare earth elements are mainly cerium and lanthanum, in which cerium is 0.036%-0.085%, lanthanum is 0.023%-0.052%, and the amount is other mixed rare earth elements.

[0050] Conductivity 60% IACS medium-strength aluminum alloy wire, the steps are as follows:

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

[0052] a. Aluminum ingot: select 7 tons of Al99.60 aluminum ingot, Si-0.14%; Fe 0.18%; Cu 0.009%; Ti+Mn+Cr+V≤0.02%; other impurity content≤0.03%; the rest is aluminum ;

[0053] b. Aluminum-iron alloy: aluminum-iron alloy 10kg, Fe 5%; Si 0.17%; Cu 0.006%; Ti+Mn+Cr+V 0.025%; other impurities content ≤0.03%; the rest is aluminum;

[0054] c. Aluminum-silicon alloy: 105kg of aluminum-silicon alloy, Si 10%; Fe 0.18%; Cu 0.004...

Embodiment 2

[0079] An IACS medium-strength aluminum alloy wire with a conductivity of 60%. The formula ratio is as follows in terms of weight percentage: iron 0.22%, silicon 0.30%, magnesium 0.48%, boron 0.02%, rare earth element 0.15%, and the rest is aluminum.

[0080] The rare earth elements are mainly cerium and lanthanum, in which cerium is 0.036%-0.085%, lanthanum is 0.023%-0.052%, and the amount is other mixed rare earth elements.

[0081] Conductivity 60% IACS medium-strength aluminum alloy wire, the steps are as follows:

[0082] (1) Material selection: by weight percentage:

[0083] a. Aluminum ingots: 7 tons of Al99.70 aluminum ingots. The molten aluminum made from aluminum ingots guarantees Si 0.08%; Fe 0.15%; Cu 0.002%; Ti+Mn+Cr+V 0.015%; other impurities Content ≤0.03%; the rest is aluminum;

[0084] b. Aluminum-iron alloy: Aluminum-iron alloy 5kg, Fe 5%; Si 0.17%; Cu 0.006%; Ti+Mn+Cr+V 0.023%; other impurities content ≤0.03%; the rest is aluminum;

[0085] c. Aluminum-silicon alloy: ...

Embodiment 3

[0110] An IACS medium-strength aluminum alloy wire with a conductivity of 60%. The formula ratio is as follows in terms of weight percentage: iron 0.19%, silicon 0.27%, magnesium 0.44%, boron 0.015%, rare earth element 0.1%, and the rest is aluminum.

[0111] The rare earth elements are mainly cerium and lanthanum, of which cerium is 0.036%-0.085%, lanthanum is 0.023%-0.052%, and the rest are other rare earth elements.

[0112] Conductivity 60% IACS medium-strength aluminum alloy wire, the steps are as follows:

[0113] (1) Material selection: by weight percentage:

[0114] a. Aluminum ingots: the molten aluminum made by smelting aluminum ingots ensures that Si≤0.16%; Fe≤0.22%; Cu≤0.01%; Ti+Mn+Cr+V≤0.02%; other impurities content ≤0.03%; the rest Is aluminum

[0115] b. Aluminum-iron alloy: Fe 5%; Si≤0.2%; Cu≤0.1%; Ti+Mn+Cr+V≤0.1%; other impurity content ≤0.03%; the rest is aluminum;

[0116] c. Aluminum-silicon alloy: Si 10%; Fe≤0.2%; Cu≤0.1%; Ti+Mn+Cr+V≤0.1%; other impurity content ≤0...

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Abstract

The invention relates to a medium strength aluminium alloy wire with conductivity of 60% 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, 0.24%-0.30% of silicon, 0.40%-0.48% of magnesium, 0.01%-0.02% of boron and 0.08%-0.15% of a rare earth element, with the balance being aluminium. The medium strength aluminium alloy wire with a product conductivity higher than or equal to 60% IACS and tensile strength higher than or equal to 230 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 the medium strength aluminium alloy has significant economic benefits and social benefits.

Description

Technical field [0001] The invention relates to a 60% IACS medium-strength aluminum alloy wire with a conductivity of 60% and a manufacturing method thereof, in particular to a medium-strength high-conductivity aluminum alloy electrical conductor and a manufacturing technology thereof, belonging to the technical field of alloy manufacturing. Background technique [0002] The development and application of aluminum alloy wires have a history of more than 80 years. Since the United States officially used pure aluminum wire as overhead stranded wire in 1898 and Aldrey aluminum alloy appeared in 1921, aluminum has been widely used as a conductor in the electrical industry. In the world, Japan, France, Australia, etc. are all developing and applying a large number of high-strength aluminum alloy wires. Most of them are non-heat-treated aluminum alloys. The main advantages are simple production process, low cost, and good electrical conductivity (58.5-59%IACS). The strength is 240~255...

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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