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Overhead heat-resistance aluminum alloy conductor material and preparation method thereof

A technology of aluminum alloy conductors and aluminum alloy melts, which is applied in the directions of metal/alloy conductors, conductive materials, conductive materials, etc., to achieve the effects of improving electrical conductivity, reducing resistivity, and low price

Inactive Publication Date: 2017-06-27
河北欣意电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conductivity and heat resistance of aluminum conductor materials are a pair of contradictions, and the two are often caught in the dilemma of trade-offs, which is the technical bottleneck for the development of heat-resistant aluminum conductor materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A heat-resistant aluminum alloy conductor material for aerial use, the mass percentage of each element is as follows: zirconium: 0.10%, yttrium: 0.05%, scandium: 0.10%, lanthanum and cerium: 0.75%, iron: 0.18%, silicon: 0.05%, Nickel: 0.03%, magnesium: 0.01%, zinc: 0.04%, boron: 0.005%, the rest is aluminum and unavoidable impurities. Wherein, the mass ratio of lanthanum and cerium is 7:3.

[0026] The preparation method of the above-mentioned heat-resistant aluminum alloy conductor material for aerial use includes the following steps:

[0027] (1) After selecting the raw materials according to the mass percentage of each element, put the returned materials, aluminum ingots and Al-Fe master alloy blanks into the melting furnace, heat until melted, and then transfer the obtained melt into the holding furnace;

[0028] (2) Adjust the melt temperature in the holding furnace to 720-780°C, then add Al-Zr master alloy, Al-Sc master alloy, Al-Y master alloy, Al-RE master allo...

Embodiment 2

[0033] A heat-resistant aluminum alloy conductor material for aerial use, the mass percentage of each element is as follows: zirconium: 0.3%, yttrium: 0.10%, scandium: 0.01%, lanthanum and cerium: 1.0%, iron: 0.05%, silicon: 0.02%, Nickel: 0.02%, magnesium: 0.02%, zinc: 0.01%, boron: 0.01%, the rest is aluminum and unavoidable impurities. Wherein, the mass ratio of lanthanum and cerium is 8:2.

[0034] The preparation method of the above-mentioned heat-resistant aluminum alloy conductor material for aerial use is also described in Example 1.

Embodiment 3

[0036] A heat-resistant aluminum alloy conductor material for aerial use, the mass percentage of each element is as follows: zirconium: 0.45%, yttrium: 0.01%, scandium: 0.06%, lanthanum and cerium: 0.3%, iron: 0.12%, silicon: 0.04%, Nickel: 0.05%, magnesium: 0.01%, zinc: 0.03%, boron: 0.01%, the rest is aluminum and unavoidable impurities. Wherein, the mass ratio of lanthanum and cerium is 7.5:2.5.

[0037] The preparation method of the above-mentioned heat-resistant aluminum alloy conductor material for aerial use is also described in Example 1.

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Abstract

The invention discloses an overhead heat-resistance aluminum alloy conductor material and a preparation method thereof, and relates to the technical field of aluminum alloy conductor materials. The overhead heat-resistance aluminum alloy conductor material comprises the following elements in percentage by mass: 0.10-0.45% of zirconium, 0.01-0.10% of yttrium, 0.01-0.10% of scandium, 0.3-1.0% of lanthanum and cerium, 0.05-0.18% of iron, silicon not more than 0.05%, nickel not more than 0.05, magnesium not more than 0.02, zinc not more than 0.04, boron not more than 0.01, and the balance of aluminum and inevitable impurities. The preparation method comprises the following steps: foundry returns, aluminum ingots and Al-Fe intermediate alloy blanks are put in a smelting furnace, are heated for melting, and are transferred into an insulation furnace; then, Al-Zr, Al-Sc, Al-Y and Al-RE intermediate alloys are added for refining and deslagging to prepare fine alloy melts; a continuous casting and continuous rolling process is adopted to firstly pour the fine alloy melts as aluminum alloy castings; and the aluminum alloy castings are leaded into a rolling mill to roll aluminum alloy rods with needed specifications. The aluminum alloy conductor material is high in electric conductivity and excellent in high-temperature resistance; and the preparation method needs no heat treatment, saves the energy consumption, and reduces the production cost.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy conductor materials. Background technique [0002] With the increase of power grid load, power transmission is developing in the direction of high voltage, large capacity, and long distance, which puts forward strict requirements on the transmission wire. Transmission efficiency, on the other hand, requires that the transmission wire has good heat resistance and anti-sag characteristics, so as to reduce the cost of line construction and save the tight corridor resources. However, the conductivity and heat resistance of aluminum conductor materials are a pair of contradictions, and the two are often caught in the dilemma of trade-offs, which is the technical bottleneck for the development of heat-resistant aluminum conductor materials. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a heat-resistant aluminum alloy conductor mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03B21B1/46H01B1/02
CPCB21B1/463C22C1/026C22C1/03C22C21/00H01B1/023
Inventor 于贵良赵晓冬王海涛
Owner 河北欣意电缆有限公司
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