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High conductivity, high intensity and heat resisting aluminum alloy conducting wire and method for producing the same and conducting wire

An aluminum alloy wire, high conductivity technology, applied in heat-resistant aluminum alloy wire and its manufacture, heat-resistant aluminum alloy wire wire, high conductivity, high strength field, can solve the problem of low strength of heat-resistant wire and temperature rise of wire High, sag increase and other problems, to achieve the effect of reducing investment cost, increasing power transmission capacity, and increasing laying span

Inactive Publication Date: 2009-05-06
广东吉青电缆实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The wires used in the transmission and transformation lines of the prior art include ordinary steel-cored aluminum stranded wires, aluminum-clad steel-cored aluminum stranded wires, heat-resistant alloy wires, and high-strength alloy wires. wires, which cannot meet the requirements of high electrical conductivity, high strength, and heat resistance for cables at the same time
For this reason, people have improved the cables. For example, in the technical solution disclosed in Chinese Patent Application No. 200610069052. More than 200MPa, this technical solution heat-treats aluminum alloy rods, which is time-consuming and power-intensive, resulting in a large backlog of products in the heat-treatment process, resulting in a bottleneck that restricts continuous production, and increases the cost of the product due to a large amount of time-consuming and power-consuming. , due to the low strength of this heat-resistant wire, and the ordinary galvanized steel wire used as a reinforcing element, the coefficient of linear expansion after preheating is large, the temperature of the wire rises, and the sag increases, which will affect the safe operation of the line
The technical solution disclosed in Chinese Patent Application No. 200610030805.6, although the tensile strength can reach more than 265 MPa, the long-term operating temperature of heat resistance cannot reach 150°C, and the electrical conductivity can only reach 53.0% IACS, and it is difficult to meet the requirements for high wires at the same time. Requirements for electrical conductivity, high strength, and heat resistance

Method used

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  • High conductivity, high intensity and heat resisting aluminum alloy conducting wire and method for producing the same and conducting wire

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Example 1, select the aluminum ingot with the brand name AI99.85 for remelting, add metal elements zirconium, iron, silicon, magnesium, and rare earth, and raise the temperature to 743°C in 3.5 hours, within the speed range of not more than 10 cycles per minute, Stir for 10 minutes, after conventional procedures such as scouring, degassing, slag removal, feeding, etc., put it aside for 45 minutes before furnace analysis, the content is: zirconium Zr 0.28%, iron Fe 0.49%, silicon Si 0.22%, magnesium Mg0.62 %, rare earth RE 0.18%, control the sum of copper Cufigure 1 As shown, the G2A type high-strength steel strands are 7 pieces of Φ2.40mm, and the aluminum alloy single wires are 24 pieces of Φ3.60mm, which are formed by concentric stranding to form 240 / 30mm 2 High conductivity, high strength, heat-resistant aluminum alloy wire. After testing, the conductivity is not less than 58.0% IACS, the tensile strength is 272MPa, the residual strength rate is not less than 90% whe...

Embodiment 2

[0028]Example 2, select an aluminum ingot with the brand name AI99.85 for remelting, add metal elements zirconium, iron, silicon, magnesium, and rare earth, and heat up to 735°C in 2.5 hours, within the speed range of not more than 10 cycles per minute, Stir for 12 minutes, after conventional procedures such as scouring, degassing, slag removal, feeding, etc., put it aside for 45 minutes before furnace analysis. The content is: zirconium Zr 0.20%, iron Fe 0.39%, silicon Si 0.14%, magnesium Mg0.54 %, rare earth RE 0.16%, control copper Cu2 High conductivity, high strength, heat-resistant aluminum alloy wire. After testing, the electrical conductivity is 58.0% IACS, the tensile strength is 265MPa, the strength residual rate is 90% when the long-term heat resistance is 150°C, and the elongation rate is 2.5%.

Embodiment 3

[0029] Example 3, select an aluminum ingot with the brand name AI99.85 for remelting, add metal elements zirconium, iron, silicon, magnesium, and rare earth, and raise the temperature to 735°C in 2.5 hours, within the speed range of not more than 10 cycles per minute, Stir for 15 minutes, after scouring, degassing, slag removal, feeding and other conventional procedures, after standing still for 45 minutes before the furnace analysis, the content is: zirconium Zr 0.34%, iron Fe 0.62%, silicon Si 0.26%, magnesium Mg0.68 %, rare earth RE 0.21%, control the sum of copper Cu2 High conductivity, high strength, heat-resistant aluminum alloy wire. After testing, the conductivity is not less than 58.0% IACS, the tensile strength is 278MPa, the residual strength rate is not less than 90% when the long-term heat resistance is 150°C, and the elongation rate is 2.1%.

[0030] The wire of the invention has high conductivity, high strength and good heat resistance, can not only increase the...

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Abstract

The invention discloses a high-conductivity high-strength heat resistance aluminum alloy conducting wire, a method for producing the same and a conducting wire produced from the same. The technical problem solved by the invention means that the high-conductivity high-strength heat resistance aluminum alloy conducting wire has the characteristics of high conductivity, high strength and heat resistance while meeting cable requirements. The aluminum alloy wire comprises the following components in weight percentage: 0.10 to 0.40 percent of Zr, 0.10 to 0.80 percent of Fe, 0.04 to 0.30 percent of Si, 0.50 to 0.80 percent of Mg, 0.10 to 0.30 percent of RE, less than 0.01 percent of Cu, and the balance being Al. The production method comprises the following steps: the Zr, the Fe, the Si, the Mg, the Re and the Al are placed in a furnace and subjected to stirring, standing, continuous cast and tandem rolling, drawing and time efficiency heat treatment. The conducting wire is prepared from the high-conductivity high-strength heat resistance aluminum alloy conducting wire. Compared with prior art, the electric conductivity of the conducting wire is more than 58.0 percent IACS, the tensile strength is more than 265MPa, and the heat resistance is more than 150 DEG C, thereby effectively increasing the power transmission capability of the conducting wire and enlarging the laying span of the conducting wire.

Description

technical field [0001] The present invention relates to a wire of a cable, a manufacturing method thereof, and a wire, in particular to a high-conductivity, high-strength, heat-resistant aluminum alloy wire and a manufacturing method thereof, and the use of the high-conductivity, high-strength, heat-resistant aluminum alloy wires of wires. Background technique [0002] The wires used in the transmission and transformation lines of the prior art include ordinary steel-cored aluminum stranded wires, aluminum-clad steel-cored aluminum stranded wires, heat-resistant alloy wires, and high-strength alloy wires. The wires cannot meet the requirements of high conductivity, high strength and heat resistance of the cable at the same time. For this reason, people have improved the cables. For example, in the technical solution disclosed in Chinese Patent Application No. 200610069052. More than 200MPa, this technical solution heat-treats aluminum alloy rods, which is time-consuming an...

Claims

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Application Information

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IPC IPC(8): C22C21/00B21B1/46C22F1/04H01B1/02
Inventor 刘小祥罗伟香
Owner 广东吉青电缆实业有限公司
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