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High-conductivity thermal-treatment type medium-strength aluminum alloy conducting filament

A technology of aluminum alloy monofilament and high conductivity, which is applied in the direction of metal/alloy conductors, root rods/rods/wires/strip conductors, etc., can solve the problems of high cost, complicated production process, and low conductivity of products, and achieve improved intensity effect

Active Publication Date: 2015-10-14
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +6
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, a lot of research has been carried out on medium-strength all-aluminum alloy wires, but the production process of medium-strength all-aluminum alloy wires still has problems such as complex production process, high cost, and low electrical conductivity (mainly at 58.5% IACS level)

Method used

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  • High-conductivity thermal-treatment type medium-strength aluminum alloy conducting filament
  • High-conductivity thermal-treatment type medium-strength aluminum alloy conducting filament
  • High-conductivity thermal-treatment type medium-strength aluminum alloy conducting filament

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The composition and mass percentage of the heat-treated medium-strength aluminum alloy conductive monofilament with high conductivity are:

[0045]

[0046]

[0047] Each alloying element is added to an industrially pure aluminum ingot with a purity of 99.7%, so that their final contents are as shown above. Alloying elements B, Si, and Cu are added in the form of Al-B, Al-Si, and Al-Cu master alloys, and alloying element Mg is added in the form of pure metal Mg. The aluminum alloy ingot is formed by casting in a copper mold; the aluminum alloy ingot is hot-rolled by a rolling mill, and the rolled aluminum alloy round rod adopts a conventional aluminum monofilament preparation process, and the mold is sequentially matched, and the wire is drawn on a high-speed wire drawing machine. The aluminum alloy monofilament has a diameter of 3.60 mm, an electrical conductivity of 59.26% IACS, a tensile strength of 245.2 MPa, and an elongation of 4.4%.

Embodiment 2

[0049] The composition and mass percentage of the heat-treated medium-strength aluminum alloy conductive monofilament with high conductivity are:

[0050]

[0051] Each alloying element is added to an industrially pure aluminum ingot with a purity of 99.7%, so that their final contents are as shown above. Alloying elements B, Si, and Cu are added in the form of Al-B, Al-Si, and Al-Cu master alloys, and alloying element Mg is added in the form of pure metal Mg. The aluminum alloy ingot is formed by casting in a copper mold; the aluminum alloy ingot is hot-rolled by a rolling mill, and the rolled aluminum alloy round rod adopts a conventional aluminum monofilament preparation process, and the mold is sequentially matched, and the wire is drawn on a high-speed wire drawing machine. The aluminum alloy monofilament has a diameter of 3.60 mm, an electrical conductivity of 59.42% IACS, a tensile strength of 248.4 MPa, and an elongation of 4.2%.

Embodiment 3

[0053] The composition and mass percentage of the heat-treated medium-strength aluminum alloy conductive monofilament with high conductivity are:

[0054]

[0055]

[0056] Each alloying element is added to an industrially pure aluminum ingot with a purity of 99.7%, so that their final contents are as shown above. Alloying elements B, Si, and Cu are added in the form of Al-B, Al-Si, and Al-Cu master alloys, and alloying element Mg is added in the form of pure metal Mg. The aluminum alloy ingot is formed by casting in a copper mold; the aluminum alloy ingot is hot-rolled by a rolling mill, and the rolled aluminum alloy round rod adopts a conventional aluminum monofilament preparation process, and the mold is sequentially matched, and the wire is drawn on a high-speed wire drawing machine. The aluminum alloy monofilament has a diameter of 3.84 mm, an electrical conductivity of 59.49% IACS, a tensile strength of 246.3 MPa, and an elongation of 4.5%.

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Abstract

The invention provides a high-conductivity thermal-treatment type medium-strength aluminum alloy conducting filament, and belongs to the technical field of electric transmission line overhead conductors of the electric power industry. The high-conductivity thermal-treatment type medium-strength aluminum alloy conducting filament solves the technical problems that in the prior art, conductivity is low, and electric transmission line loss is high. The microstructure of alloy is adjusted by controlling the content of B, Mg, Si, Cu and other microalloying elements and adopting the thermal treatment process, and therefore the medium-strength aluminum alloy filament is developed, wherein the conductivity of the filament is not smaller than 59.2% IACS (20 DEG C), the tensile strength of the filament is not smaller than 240 MPa, and the ductility of the filament is not smaller than 4.0%.

Description

【Technical field】 [0001] The invention relates to an overhead wire used for transmission lines in the electric power industry, in particular to a high-conductivity heat-treated medium-strength aluminum alloy conductive monofilament. 【Background technique】 [0002] When laying power grid lines, it is necessary to comprehensively consider the cost of towers, foundations, insulators and fittings, as well as the cost of wire erection and site transportation. When the medium-strength all-aluminum alloy conductor is used instead of the steel-cored aluminum conductor, the annual power consumption can be reduced, thereby saving 5% to 8% of the cost of the line body, and because the average span increases, the amount of towers is reduced, making the tower per kilometer The material index is reduced by about 15%, which further saves the corridor area. Compared with high-strength all-aluminum alloy wires (conductivity 52.5-53%IACS), medium-strength all-aluminum alloy wires have higher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C21/08C22C1/03C22F1/043C22F1/047H01B1/02H01B5/02
Inventor 祝志祥陈保安韩钰陈新杨长龙张强潘学东赵蕊王晓芳刘东雨冯砚厅于鑫刘明慧叶丽军王培林孟博王昭
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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