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Heat-resistant aluminum alloy conductor material with electric conductivity of 62 percent and preparation method for heat-resistant aluminum alloy conductor material

A technology of aluminum alloy conductor and electrical conductivity, which is applied in the direction of metal/alloy conductor, cable/conductor manufacturing, circuit, etc., can solve the problems of increasing transmission loss, etc., and achieve the effect of reducing line loss, reducing wind dancing, and small wire diameter

Inactive Publication Date: 2015-04-29
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problem is that the conductivity of the existing heat-resistant aluminum alloy wire is 58% IACS and 60% IACS, which is 1 to 3% IACS lower than that of the duralumin wire, which increases the transmission loss

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A large-capacity, high-conductivity, heat-resistant aluminum alloy conductor material is mainly composed of aluminum, erbium, yttrium, and boron. The mass percentages of various elements are: erbium 0.32%, yttrium 0.21%, boron 0.025%, impurity element silicon 0.06%, impurity element iron 0.20%, impurity element chromium, manganese, vanadium, titanium sum is 0.012%, and the rest is aluminum .

[0013] The above-mentioned high-capacity, high-conductivity and heat-resistant aluminum alloy conductor material is prepared by the following process: firstly, the aluminum ingot with a purity of 99.7wt% is melted in a furnace, and the temperature of the molten aluminum is 720°C, and chemical analysis is carried out before the furnace. 0.06%, the impurity element iron is 0.20%, the sum of impurity elements chromium, manganese, vanadium and titanium (Cr+Mn+Ti+V) is 0.012%, and then add aluminum-erbium when the temperature of the aluminum liquid in the holding furnace is 740°C allo...

Embodiment 2

[0016] A large-capacity, high-conductivity, heat-resistant aluminum alloy conductor material is mainly composed of aluminum, erbium, yttrium, and boron. The mass percentages of various elements are: erbium 0.35%, yttrium 0.30%, boron 0.035%, impurity element silicon 0.05%, impurity element iron 0.16%, impurity element chromium, manganese, vanadium, titanium and 0.011%, the rest is aluminum .

[0017] The above-mentioned high-capacity, high-conductivity and heat-resistant aluminum alloy conductor material is prepared by the following process: firstly, the aluminum ingot with a purity of 99.7wt% is melted in a furnace, and the temperature of the molten aluminum is 730°C, and chemical analysis is carried out before the furnace. 0.05%, the impurity element iron is 0.16%, the sum of impurity elements chromium, manganese, vanadium and titanium (Cr+Mn+Ti+V) is 0.011%, and then add aluminum-erbium when the temperature of the aluminum liquid in the holding furnace is 750°C alloy, alum...

Embodiment 3

[0020] A large-capacity, high-conductivity, heat-resistant aluminum alloy conductor material is mainly composed of aluminum, erbium, yttrium, and boron. The mass percentages of various elements are: erbium 0.40%, yttrium 0.20%, boron 0.04%, impurity element silicon 0.06%, impurity element iron 0.18%, impurity element chromium, manganese, vanadium, titanium and 0.012%, the rest for aluminum.

[0021] The above-mentioned high-capacity, high-conductivity and heat-resistant aluminum alloy conductor material can be prepared by the following process: firstly, the aluminum ingot with a purity of 99.7wt% is melted in a furnace, and the temperature of the molten aluminum is 735°C. 0.06%, the impurity element iron is 0.18%, the sum of impurity elements chromium, manganese, vanadium, titanium (Cr+Mn+Ti+V) is 0.012%, and then add aluminum erbium alloy when the temperature of the aluminum liquid in the holding furnace is 740 °C , aluminum-yttrium alloy and aluminum-boron intermediate allo...

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Abstract

The invention discloses a heat-resistant aluminum alloy conductor material with the electric conductivity of 62 percent and a preparation method for the heat-resistant aluminum alloy conductor material, and belongs to the technical field of conductor materials for overhead transmission lines. The material comprises the following elements in percentage by mass: 0.31 to 0.50 percent of erbium, 0.20 to 0.40 percent of yttrium, 0.02 to 0.05 percent of boron, less than or equal to 0.06 percent of silicon impurities, less than or equal to 0.20 percent of iron impurities, less than or equal to 0.012 percent of impurities of chromium, manganese, vanadium and titanium, and the balance of aluminum, wherein the mass ratio of the erbium to the boron is greater than or equal to 10 and less than or equal to 15. The aluminum alloy conductor material disclosed by the invention is prepared into the lines in the required specifications by smelting, casting, cold machining and hot machining. The aluminum alloy conductor material disclosed by the invention has the tensile strength of greater than or equal to 160 MPa, the elongation rate of greater than or equal to 2.0 percent and the electric conductivity of greater than or equal to 62 percent according to IACS. The mechanical properties and the electrical properties at room temperature reach or even exceed those of an LY9-L2 high-conductivity hard aluminum conductor material; the heat resistance meets the requirement on the heat resistance of the heat-resistant aluminum alloy conductor material; compared with a heat-resistant aluminum alloy line with the electric conductivity of 60 percent according to IACS, the line loss can be reduced by 3 percent; remarkable economic benefits can be achieved.

Description

technical field [0001] The invention belongs to the technical field of conductor materials for overhead power transmission wires, in particular to a heat-resistant aluminum alloy conductor material with a conductivity of 62 percent and a preparation method thereof, which are suitable for large-capacity power transmission. Background technique [0002] Under the situation of the State Grid's "West-to-East Power Transmission, North-South Mutual Supply, and National Networking", there are more and more long-distance, large-capacity, and high-voltage transmission lines, and more and more attention has been paid to transmission loss, and more and more attention has been paid to energy-saving wires. The advantage of using heat-resistant aluminum alloy wires with higher current density to increase the transmission capacity is that the strength requirements for pole towers and fittings are lower, and the construction is easier. The existing problem is that the conductivity of the ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03C22F1/04H01B1/02H01B13/00
Inventor 侯世香刘东雨王迪韦艳妮许国正韩钰严康骅
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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