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Aluminum alloy cable core and production technology of aluminum alloy cable core

A cable core, aluminum alloy technology, used in power cables, metal/alloy conductors, cable/conductor manufacturing, etc., can solve the problems of increased line loss, reduced corrosion resistance, shortened life, etc., and achieve strong corrosion resistance and creep resistance. Good performance, good thermal stability, no memory effect

Inactive Publication Date: 2014-09-24
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the production of wires and cables in my country is mainly made of pure aluminum electrical round aluminum rods. Due to the low strength of pure aluminum electrical round aluminum rods and the tensile strength ≤ 140MPa, steel cores are usually added to form steel-cored aluminum stranded wires when making wires and cables. , which will increase the weight of the wire and cable, increase the resistance, and reduce the corrosion resistance, resulting in an increase in the load of the pole, an increase in line loss, and a shortened life, which is not conducive to the realization of large-span, high-carrying capacity high-voltage transmission

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An aluminum alloy cable core, the weight ratio of its chemical composition is as follows: 0.3% copper, 0.2% iron, 0.05% silicon, 0.02% titanium, 0.01% potassium, 0.001% zinc, 0.001% manganese, 0.0003% magnesium, and the balance is aluminum.

[0023] A kind of production method of aluminum alloy cable core, carry out according to the following steps:

[0024] 1) Electrolyze the primary aluminum liquid and analyze the components of the primary aluminum liquid;

[0025] 2) Add aluminum liquid with a content of more than 99.5% in the melting furnace, and control the temperature between 760°C; add copper and iron, and control the content to 0.3% copper and 0.2% iron; first add copper and iron metal to the melting furnace Internal smelting, kept at a temperature of 760°C for 30 minutes, and stirred thoroughly and evenly with electromagnetic stirring for half an hour. After analysis before the furnace, it was determined that the content of each element in the chemical composi...

Embodiment 2

[0034] An aluminum alloy cable core, the weight ratio of its chemical composition is as follows: 0.6% copper, 0.1% iron, 0.02% silicon, 0.01% titanium, 0.01% potassium, 0.001% zinc, 0.001% manganese, 0.0003% magnesium, and the balance is aluminum.

[0035] A kind of production method of aluminum alloy cable core, carry out according to the following steps:

[0036] 1) Electrolyze the primary aluminum liquid and analyze the components of the primary aluminum liquid;

[0037] 2) Add aluminum liquid with a content of more than 99.5% in the melting furnace, and control the temperature between 800°C; add copper and iron, and control the content to 0.6% copper and 0.1% iron; first add copper and iron metal to the melting furnace Internal smelting, kept at 800°C for 40 minutes, and stirred thoroughly and evenly with electromagnetic stirring for half an hour. After analysis before the furnace, it was determined that the content of each element in the chemical composition met the abov...

Embodiment 3

[0046] An aluminum alloy cable core, the weight ratio of its chemical composition is as follows: 0.5% copper, 0.3% iron, 0.05% silicon, 0.02% titanium, 0.02% potassium, 0.001% zinc, 0.001% manganese, 0.0002% magnesium, and the balance is aluminum.

[0047] A kind of production method of aluminum alloy cable core, carry out according to the following steps:

[0048] 1) Electrolyze the primary aluminum liquid and analyze the components of the primary aluminum liquid;

[0049] 2) Add aluminum liquid with a content of more than 99.5% in the melting furnace, and control the temperature between 780°C; add copper and iron, and control the content to 0.5% copper and 0.3% iron; first add copper and iron metal to the melting furnace Internal smelting, kept at a temperature of 780°C for 35 minutes, and stirred thoroughly and uniformly for half an hour with electromagnetic stirring. After analysis before the furnace, it was determined that the content of each element in the chemical comp...

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PUM

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Abstract

The invention discloses an aluminum alloy cable core and a production technology of the aluminum alloy cable core. The aluminum alloy cable core comprises, by weight, 0.3% to 0.6% of copper, 0.1% to 0.3% of iron, 0.02% to 0.05% of silicon, 0% to 0.02% of titanium, 0% to 0.02% of potassium, 0% to 0.001% of zinc, 0%-0.001% of manganese, 0% to 0.0003% of magnesium and the balance aluminum. The finished circular aluminum rod is obtained sequentially through the steps of primary aluminum liquid electrolysis, component analysis, copper-iron agent adding, electromagnetic stirring, determining of copper-iron component content in the aluminum liquid, temperature adjustment, inner-furnace purification, inner-furnace standing, outer-furnace purification, online gas removal, continuous casting, blank shearing, continuous rolling, cooling and detecting. The aluminum alloy cable core is mainly used for a high-conductivity aluminum alloy cable, the cable manufactured with the aluminum alloy cable core has the higher corrosion resistance and the higher creep resistance compared with a copper core cable, the elasticity is 40% lower than that of the copper core cable, the flexible performance is 30% higher than that of the copper core cable, and the cable is free of the memory effect and good in heat stability.

Description

technical field [0001] The invention relates to the technical field of power wires, in particular to an aluminum alloy cable core and a production process thereof. Background technique [0002] At present, the production of wires and cables in my country is mainly made of pure aluminum electrical round aluminum rods. Due to the low strength of pure aluminum electrical round aluminum rods and the tensile strength ≤ 140MPa, steel cores are usually added to form steel-cored aluminum stranded wires when making wires and cables. , This will increase the weight of the wire and cable, increase the resistance, and reduce the corrosion resistance, resulting in an increase in the load of the pole, increased line loss, and shortened life, which is not conducive to the realization of high-voltage power transmission with large span and high carrying capacity. [0003] Therefore, it is urgent to develop a high-strength alloy aluminum wire with good heat resistance and large carrying capaci...

Claims

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Application Information

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IPC IPC(8): H01B1/02H01B9/00H01B13/00C22C21/18C22C21/16C22C21/14B22D11/06
Inventor 王文生李超
Owner STATE GRID CORP OF CHINA
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