Moderate-intensity high-conductivity electrical aluminum wire material and preparation method thereof

A wire material and conductivity technology, applied in the direction of metal/alloy conductors, etc., can solve problems such as strength and conductivity that cannot meet application requirements, low conductivity performance indicators, and high power consumption, so as to increase the actual current-carrying area and reduce crystals. Defects, Adjustment Easy Effect

Active Publication Date: 2014-02-05
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the production of Al-Mg-Si alloy wire mainly adopts continuous casting and rolling process, but due to the restriction of composition ratio and preparation method, the strength and conductivity of Al-Mg-Si alloy wire products still cannot meet the application requirements
Chinese patent (CN102162050A) discloses a method for manufacturing a medium-strength aluminum alloy wire with a conductivity of 59%, which improves the tensile strength of the alloy wire to a certain extent, but the conductivity index is low
Chinese patent (CN102634695A) discloses a high-conductivity non-heat-treated medium-strength aluminum alloy wire and its manufacturing method. The conductivity of the manufactured alloy wire is only 60% IACS, which consumes a lot of power and wastes energy in actual overhead applications.

Method used

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preparation example Construction

[0026] A method for preparing the above-mentioned medium-strength and high-conductivity electrical aluminum wire material, characterized in that the steps of the method are as follows:

[0027] (1) Alloy smelting and pouring: First, place Al with a purity of 99.7% in a crucible for melting, and set the melting temperature to 690-710°C. After Al is melted, add Al-26%Si, Al-50%Fe, Al- 50% Cu master alloy and pure magnesium; after the alloy is completely melted, raise the melting temperature to 720-740°C for refining with argon blowing, after refining, let stand for 5-10 minutes to remove slag, and carry out electromagnetic stirring, the stirring time is 20-30 Minutes, after stirring, let it stand for 5-10 minutes; then use a ceramic filter to filter and purify and cast it into an extrusion billet;

[0028] (2) Alloy extrusion:

[0029] 1) Perform solid solution pretreatment at 500-520°C on the extruded ingot, keep it warm for 1-2 hours, take it out and cool it in air;

[0030]...

Embodiment 1

[0036] A method for preparing a medium-strength high-conductivity electrical aluminum wire material, the steps are as follows:

[0037] (1) Alloy smelting and pouring: First, put Al with a purity of 99.7% in a crucible for melting, and set the melting temperature to 690°C. After Al is melted, add Al-26%Si, Al-50%Fe, Al-50% in turn Cu intermediate alloy and pure magnesium; after the alloy is completely melted, raise the melting temperature to 720°C for refining with argon blowing, after refining, let stand for 5 minutes to remove slag, and carry out electromagnetic stirring, the stirring time is 20 minutes, and let stand for 5 minutes after stirring ; After that, it is filtered and purified with a ceramic filter and cast into an extruded billet;

[0038] (2) Alloy extrusion:

[0039] 1) Perform solid solution pretreatment at 500°C on the extruded ingot, keep it warm for 2 hours, take it out and cool it in air;

[0040] 2) Extrude the ingot into a Φ10mm aluminum rod on the bed...

Embodiment 2

[0044] A method for preparing the above-mentioned medium-strength and high-conductivity electrical aluminum wire material, the steps are as follows:

[0045] (1) Alloy smelting and pouring: First, put Al with a purity of 99.7% in a crucible for melting, and set the melting temperature to 710°C. After Al is melted, add Al-26%Si, Al-50%Fe, Al-50% in turn Cu intermediate alloy and pure magnesium; after the alloy is completely melted, raise the melting temperature to 740°C for refining by blowing argon, after refining, let stand for 10 minutes to remove slag, and carry out electromagnetic stirring, the stirring time is 30 minutes, and stand for 10 minutes after stirring ; After that, it is filtered and purified with a ceramic filter and cast into an extruded billet;

[0046] (2) Alloy extrusion:

[0047] 1) Perform solid solution pretreatment at 520°C on the extruded ingot, keep it warm for 1 hour, take it out and cool it in air;

[0048]2) Extrude the ingot into a Φ10mm aluminu...

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Abstract

The invention relates to a moderate-intensity high-conductivity electrical aluminum wire material and a preparation method thereof. A method for optimizing the alloy components and combining processes of extruding, preparing and aging is adopted, so that an Al-Mg-Si alloy wire is high in density, fewer in defects and high in yield. The problem that the conductivity and intensity of the Al-Mg-Si alloy wire prepared by a traditional method cannot be considered simultaneously is solved. The conductivity of the Al-Mg-Si alloy wire prepared by the method disclosed by the invention is over 62 percent IACS (International Annealed Copper Standard), the tensile strength is over 220MPa, and the alloy wire is easy to implement and low in cost and has obvious social and economic benefits and wide application prospects.

Description

technical field [0001] The content of the invention belongs to the field of electrical materials and preparation, and specifically discloses a medium-strength and high-conductivity electrical aluminum wire material and a preparation method thereof. Background technique [0002] Due to the shortage of copper resources, the use of aluminum conductors as overhead materials has become a worldwide issue. In the United States, Japan and other countries, the amount of aluminum conductors used as overhead conductors is more than 50%, and France is as high as 80%. However, due to the lack of technical strength in this area in our country, the technological content of the products is not high, which seriously restricts the development and application of aluminum wires. At present, my country's overhead conductors are still dominated by steel-cored aluminum stranded wires, which have high costs and large losses in long-distance power transmission. According to the national power grid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08H01B1/02C22F1/047C22C1/03C22C1/06
Inventor 王峰王松伟王帆刘正毛萍莉
Owner SHENYANG POLYTECHNIC UNIV
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