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Heat-resistant aluminum-alloy conductor material for cables and manufacture method thereof

A technology of aluminum alloy conductors and aluminum alloys, which is applied in the direction of metal/alloy conductors, root rods/rods/wires/strip conductors, etc., can solve the problems that the residual strength rate cannot meet the actual requirements, and achieve improved plasticity and high ductility , Improve the effect of cold working performance

Inactive Publication Date: 2013-02-13
绩溪欣意圣厚源电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it mentions that adding rare earth element Y can improve the thermal stability of the cable, the strength residual rate under long-term heat-resistant conditions still cannot meet the actual requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Add an aluminum ingot with a purity greater than 99.70wt% in the shaft furnace, raise the temperature to 710-760°C to melt the aluminum ingot, raise the temperature to 740-800°C, add 0.35wt% Fe, 0.19wt% Cu, 0.22wt% of Mg, 0.12wt% of Zr, 0.15wt% of Ca, and 0.18wt% of Y are completely melted, and the alloy composition is adjusted to the set range. The alloy elements are based on the aluminum master alloy form join;

[0021] 2) Keep warm at 720-780°C for 30 minutes, then add 0.1wt% refining agent (produced by Kefa Industrial Co., Ltd., Nanhai District, Foshan City) to remove slag and gas, and then cast into aluminum alloy castings.

[0022] 3) Import the aluminum alloy casting into the rolling mill, the temperature of the introduction into the rolling mill is 450-500°C, and the final rolling temperature of the aluminum alloy rod exported from the rolling mill is 280-300°C;

[0023] 4) Cold drawing the aluminum alloy rods into Φ1.5mm aluminum alloy wires, twisting 19 dr...

Embodiment 2

[0027] 1) Add an aluminum ingot with a purity greater than 99.70wt% in the shaft furnace, raise the temperature to 710-760°C to melt the aluminum ingot, raise the temperature to 740-800°C, add 0.45wt% Fe, 0.09wt% Cu, 0.12wt% of Mg, 0.05wt% of Zr, 0.11wt% of Ca, and 0.08wt% of Sc are completely melted, and the alloy composition is adjusted to the set range. The alloy elements are based on the aluminum master alloy form join;

[0028] 2) Keep warm at 720-780°C for 30 minutes, then add 0.3wt% refining agent to remove slag and degas, and then cast into aluminum alloy castings, the casting temperature

[0029] 3) Import the aluminum alloy casting into the rolling mill, the temperature of the introduction into the rolling mill is 450-500°C, and the final rolling temperature of the aluminum alloy rod exported from the rolling mill is 280-300°C;

[0030] 4) Cold drawing the aluminum alloy rods into Φ2.5mm aluminum alloy wires, twisting 19 drawn aluminum alloy wires to prepare conduct...

Embodiment 3

[0034] 1) Add an aluminum ingot with a purity greater than 99.70wt% in the shaft furnace, raise the temperature to 710-760°C to melt the aluminum ingot, raise the temperature to 740-800°C, add 0.75wt% Fe, 0.25wt% Cu, 0.08wt% of Mg, 0.08wt% of Zr, 0.09wt% of Ca, and 0.43wt% of Er are completely melted, and the alloy composition is adjusted to the set range. The alloy elements are based on the aluminum alloy form join;

[0035] 2) Keep warm at 720-780°C for 30 minutes, then add 0.13wt% refining agent to remove slag and degas, and then cast into aluminum alloy castings, the casting temperature

[0036] 3) Import the aluminum alloy casting into the rolling mill, the temperature of the introduction into the rolling mill is 450-500°C, and the final rolling temperature of the aluminum alloy rod exported from the rolling mill is 280-300°C;

[0037] 4) Cold drawing the aluminum alloy rods into Φ3.5mm aluminum alloy wires, twisting 7 drawn aluminum alloy wires to prepare conductor core...

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Abstract

The invention relates to a heat-resistant aluminum-alloy conductor material for cables and a manufacture method thereof. The aluminum-alloy conductor material is prepared from the following components in percentage by weight: 0.3-1.0 percent of Fe, 0.01-0.3 percent of Cu, 0.01-0.3 percent of Mg, 0.01-0.3 percent of one, two or three of Mg, Ca, Mo and Sb and 0.05-0.8 percent of one or more rear-earth elements of Sc, Y and Er, not larger than 0.1 percent of Si, not larger than 0.15 percent of other impurities and the balance of Al. The aluminum-alloy conductor material has excellent conductivity, tensile performance, flexible performance and excellent heat resistance, can be used as insulated cable cores of wires and cables and is particularly suitable for overhead insulated conductor wire cores.

Description

technical field [0001] The invention belongs to the technical field of electric wire and cable and its manufacturing process, and in particular relates to a heat-resistant aluminum alloy conductor material for cables and a preparation method thereof. Background technique [0002] In the field of power transmission, aluminum is light, cheap, and has good conductivity, high specific strength, and good wear resistance, so it occupies a dominant position in the field of electrical engineering. On overhead transmission lines, especially on ultra-high voltage lines and large-span lines, aluminum alloy cables have always been the main material of overhead transmission cables. Although the heat-resistant aluminum alloy conductors currently used are used for overhead wires, there is no heat-resistant requirement for conductors used for wire and cable insulation cores. On the one hand, the application of aluminum alloy conductors in wire and cable conductor cores is not very good. On...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/02H01B1/02H01B5/02
Inventor 林泽民
Owner 绩溪欣意圣厚源电缆有限公司
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