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High-conductivity rare earth aluminum alloy wire and manufacturing method thereof

A technology of aluminum alloy wire and high conductivity, which is applied in the direction of conductive materials, conductive materials, metal/alloy conductors, etc., can solve the problems of high cost of copper cables and high copper prices, and achieve improved conductivity, inhibition of corrosion, and improvement of thermal stability sexual effect

Active Publication Date: 2017-05-24
靖江市新万国标准件制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the vast majority of wire and cable conductors use copper conductors. Due to the relative lack of copper resources in my country and the high price of copper, copper conductors account for about 70% of the cost of copper cables, and the cost of manufacturing copper cables is too high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The aluminum alloy material contains the following components: 0.05wt% Ag, 0.01wt% Si, 0.01wt% Fe, 0.01wt% Zn, 0.01wt% Ga, 0.05wt% rare earth elements, the rest is aluminum and non- Impurities to avoid. The chemical composition of the rare earth element is: 0.02wt% Ce, 0.02wt% Nd, 0.005wt% Pr, Sm 0.0008wt%, and La 0.02wt%. The content of a single impurity element of the unavoidable impurities is 0-0.01wt%, and the total content of the impurities is 0-0.03wt%.

[0033] In a nitrogen atmosphere, within 4 hours, the aluminum ingot (aluminum content is not less than 99.6wt%) is heated at a uniform rate to 670°C, the molten aluminum is stirred for 90 minutes, then alloying elements are added, and the stirring is continued for 40 minutes to refine and remove slag. Through continuous casting and continuous rolling, φ9.5mm aluminum alloy rod is made. The φ9.5mm aluminum rod is drawn for the first time, then spheroidized and annealed at 380°C for 240min, cooled to room temperatur...

Embodiment 2

[0037] The aluminum alloy material contains the following components: 0.5wt% Ag, 0.1wt% Si, 0.2wt% Fe, 0.1wt% Zn, 0.03wt% Ga, 0.25wt% rare earth elements, the rest is aluminum and non- Impurities to avoid. The chemical composition of the rare earth element is: 0.1wt% Ce, 0.05wt% Nd, 0.01wt% Pr, 0.0009wt% Sm, 0.01wt% La. The content of a single impurity element of the unavoidable impurities is 0-0.01wt%, and the total content of the impurities is 0-0.03wt%.

[0038] In a nitrogen atmosphere, within 4 hours, the aluminum ingot (aluminum content is not less than 99.6wt%) is heated to 670°C at a uniform speed, the molten aluminum is stirred for 90 minutes, the above alloy elements are added, and the stirring is continued for 40 minutes to refine and remove slag. Through continuous casting and continuous rolling, φ9.5mm aluminum alloy rod is made. The φ9.5mm aluminum rod is drawn for the first time, then spheroidized and annealed at 380°C for 240min, cooled to room temperature in ai...

Embodiment 3

[0042] The aluminum alloy material is composed of the following components: 0.2wt% Ag, 0.04wt% Si, 0.05wt% Fe, 0.01wt% Zn, 0.01wt% Ga, 0.2wt% rare earth elements, the rest is aluminum and non- Impurities to avoid. The weight percentage of the chemical composition of the rare earth element is: 0.05wt% Ce, 0.04wt% Nd, 0.007wt% Pr, 0.0009wt% Sm, 0.01wt% La. The content of a single impurity element of the unavoidable impurities is 0-0.01wt%, and the total content of the impurities is 0-0.03wt%.

[0043] In a nitrogen atmosphere, within 4 hours, the aluminum ingot (aluminum content is not less than 99.6wt%) is heated to 670°C at a uniform speed, the molten aluminum is stirred for 90 minutes, the above alloy elements are added, and the stirring is continued for 40 minutes to refine and remove slag. Through continuous casting and continuous rolling, φ9.5mm aluminum alloy rod is made. The φ9.5mm aluminum rod is drawn for the first time, then spheroidized and annealed at 380°C for 240mi...

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Abstract

The invention provides a rare earth aluminum alloy wire high in electrical conductivity, corrosion resistance, wear resistance and toughness, and a manufacturing method of manufacturing the rare earth aluminum alloy wire. The rare earth aluminum alloy material comprises silver, silicon, iron, zinc, gallium, a rare earth element, aluminum and inevitable elements. The contents of all the above elements are as follows: 0.05-0.5 wt% of Ag, 0.01-0.1 wt% of Si, 0.01-0.2 wt% of Fe, 0.01-0.1 wt% of Zn, 0.01-0.03 wt% of Ga, 0.05-0.25 wt% of rare earth element, and the balance of aluminum and inevitable impurities. According to the technical scheme of the method for manufacturing the rare earth aluminum alloy wire, firstly, an aluminum ingot is melted. Secondly, corresponding alloying elements are added into the molten aluminum liquid. Thirdly, through the continuous-casting, continuous-rolling and drawing process, an aluminum alloy wire is finally manufactured. The manufactured aluminum alloy wire is excellent in electrical conductivity, and the conductivity of the aluminum alloy wire can reach or exceed 101. 2% IACS. Meanwhile, the manufactured aluminum alloy wire is excellent in flexibility, corrosion resistance and wear resistance.

Description

Technical field [0001] The invention belongs to the field of materials for wire and cable conductors. Specifically, the invention relates to a high-conductivity rare earth aluminum alloy wire and a preparation method thereof. Background technique [0002] At present, most of the wire and cable conductors use copper conductors. Due to the relative lack of copper resources in my country, copper prices remain high. Copper conductors account for about 70% of the cost of copper cables. The cost of manufacturing copper cables is too high. Compared with copper cables, aluminum alloy cables are lighter in weight, easy to lay, and can reduce installation costs by at least 20%-40%. However, the conductivity of aluminum alloy conductors is 61.5% of that of copper conductors, and the current carrying capacity is 79% of copper conductors. The conductivity of copper conductors per unit volume is much better than that of aluminum alloy conductors. [0003] How to improve the electrical conductiv...

Claims

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Application Information

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IPC IPC(8): H01B1/02H01B13/00C22C21/10C22C21/02C22C21/00
CPCC22C21/00C22C21/02C22C21/10H01B1/023H01B13/00
Inventor 徐灿国
Owner 靖江市新万国标准件制造有限公司
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