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Electro-conductive filament

A monofilament and aluminum alloy monofilament technology, which is applied in the direction of metal/alloy conductors, can solve the problems of complex production process, high cost, and low conductivity of the product, and achieve simple preparation process, low production cost and high conductivity. Effect

Inactive Publication Date: 2016-07-27
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 aluminum alloy wires, but the production process of medium-strength 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A medium-strong conductive monofilament material with high conductivity. Add various alloying elements to industrial pure aluminum ingot with a purity of 99.7%, and the melting temperature is 700-720°C to make B, Si, Mg, Sc, Fe, Cr+Mn The content of +V+Ti is shown in Table 1, and the balance is Al. Alloying elements B, Si, and Sc are added in the form of Al-B, Al-Si, Al-Sc intermediate alloys, and alloying elements Mg is added in the form of pure metal Mg; among them, industrial pure aluminum ingots are added at 700-720°C after melting -B master alloy Stir for 15 minutes, stand still for 20 minutes, remove slag, raise the temperature to 720°C and add Al-Si master alloy, metal Mg and Al-Sc master alloy.

[0048] Use a mixer to fully stir the aluminum alloy liquid, and add N at 700-720°C 2 Blow into the refining agent for 10 minutes to dehydrogenate and slag-refine the aluminum alloy liquid, stir for 8 minutes and then stand for 30 minutes to remove slag; pour the prepar...

Embodiment 2

[0050] A medium-strong conductive monofilament material with high conductivity. Add various alloying elements to industrial pure aluminum ingot with a purity of 99.7%, and the melting temperature is 700-720°C to make B, Si, Mg, Sc, Fe, Cr+Mn The content of +V+Ti is shown in Table 1, and the balance is Al. Alloying elements B, Si, and Sc are added in the form of Al-B, Al-Si, Al-Sc intermediate alloys, and alloying elements Mg is added in the form of pure metal Mg; among them, industrial pure aluminum ingots are added at 700-720°C after melting -B master alloy Stir for 15 minutes, stand still for 20 minutes, remove slag, raise the temperature to 720°C and add Al-Si master alloy, metal Mg and Al-Sc master alloy.

[0051] Use a mixer to fully stir the aluminum alloy liquid, and add N at 700-720°C 2 Blow into the refining agent for 10 minutes to dehydrogenate and slag-refine the aluminum alloy liquid, stir for 12 minutes and then stand for 30 minutes to remove slag; pour the prepa...

Embodiment 3

[0053] A medium-strong conductive monofilament material with high conductivity. Add various alloying elements to industrial pure aluminum ingot with a purity of 99.7%, and the melting temperature is 700-720°C to make B, Si, Mg, Sc, Fe, Cr+Mn The content of +V+Ti is shown in Table 1, and the balance is Al. Alloying elements B, Si, Sc are added in the form of Al-B, Al-Si, Al-Sc intermediate alloys, and alloying element Mg is added in the form of pure metal Mg; among them, the industrial pure aluminum ingot is melted and added at 700-720°C The Al-B master alloy was stirred for 15 minutes, slag was removed after standing still for 20 minutes, and the temperature was raised to 720°C to add the Al-Si master alloy, metal Mg and Al-Sc master alloy.

[0054] Use a mixer to fully stir the aluminum alloy liquid, and add N at 700-720°C 2 Blow into the refining agent for 10 minutes to dehydrogenate and slag-refine the aluminum alloy liquid, stir for 10 minutes and then stand still for 30 ...

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PUM

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Abstract

The invention provides an electro-conductive filament which is characterized in that trace amounts of B and Sc are added into a Al-Mg-Si alloy and heat treatment is carried out after wiredrawing at room temperature. The invention aims to solve the technical problems of low electro-conductivity and high transmission line loss. As the contents of microalloying elements of B, Mg, Si and Sc and the technology for heat treatment are controlled to adjust the microstructure of an alloy, the moderately strong electro-conductive filament being 59.5% IACS (20 DEG C) or higher in electro-conductivity, 250 MPa or higher in tensile strength and 4.5% or higher in ductility is obtained.

Description

technical field [0001] The invention relates to an overhead wire used for a power transmission line in the electric power industry, in particular to a 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 medium-strength aluminum alloy conductors are used instead of steel-cored aluminum conductors, the annual power consumption can be reduced, thereby saving 5% to 8% of the cost of the line body, and due to the increase in the average span, the amount of towers is reduced, making the tower material per kilometer The index is reduced by about 15%, which further saves the corridor area. Compared with high-strength aluminum alloy wires (conductivity 52.5-53% IACS), medium-strength aluminum alloy wires have higher electrical conductivity (≥58.5% IACS) and lower wire loss rate. The ...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C21/02C22C21/00C22C1/03C22F1/047H01B1/02
Inventor 祝志祥陈保安张强韩钰陈新杨长龙张宏宇夏玉钰王玲金鹏刘君吴观斌孔晓峰林琳
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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