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Aluminum-magnesium-silicon alloy monofilament and preparation method thereof

A silicon alloy and monofilament technology, which is applied in the field of aluminum alloy monofilament, can solve the problems of low conductivity and difficulty in meeting the requirements of energy-saving and loss-reducing power transmission.

Pending Publication Date: 2020-10-27
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing aluminum-magnesium-silicon alloy wires have low electrical conductivity, which makes it difficult to meet the power transmission requirements for energy saving and loss reduction

Method used

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  • Aluminum-magnesium-silicon alloy monofilament and preparation method thereof
  • Aluminum-magnesium-silicon alloy monofilament and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] An aluminum-magnesium-silicon alloy monofilament, its components and their mass percentages are:

[0043] element magnesium silicon erbium Lanthanum (Cerium) boron Vanadium + Titanium + Chromium + Manganese aluminum Mass fraction / wt.%0.500.300.500.080.010.01 margin

[0044] Put the electrical pure aluminum ingot with a purity of 99.7% into a smelting furnace at 730°C for smelting;

[0045] After melting, add the aluminum-lanthanum master alloy and the aluminum-boron master alloy at 740°C, fully stir it after melting completely, and let it stand for 40 minutes;

[0046] Pour 4 / 5 of the melt from the upper part of the smelting furnace into another holding furnace, add pure magnesium, aluminum-silicon master alloy, and aluminum-erbium master alloy at 730℃, stir for 15min after complete melting, and let stand for 15min;

[0047] Blow in 0.5~0.8MPa nitrogen gas at 715℃ for 15min, leave it to stand for 20min, then slag off;

[0048] Pour the aluminum alloy liquid at 700℃ into the ...

Embodiment 2

[0051] An aluminum-magnesium-silicon alloy monofilament, the mass percentage of each component is:

[0052] element magnesium silicon erbium Lanthanum (Cerium) boron Vanadium + Titanium + Chromium + Manganese aluminum Mass fraction / wt.%0.700.500.400.050.0150.008 margin

[0053] The electrical pure aluminum ingot with a purity of 99.7% is added to the melting furnace at a melting temperature of 750°C; after the pure aluminum is completely melted, the aluminum-cerium master alloy is added at 730°C and the aluminum-boron master alloy is added at the same time, and then fully stirred after it is completely melted , Stand for 50min; pour the upper aluminum liquid of 4 / 5 melting furnace into another holding furnace, add pure magnesium, aluminum-silicon master alloy, aluminum-erbium master alloy at 750℃, stir for 10min after complete melting, and let stand for 20min . Make their final content as shown above. Blow in 0.5-0.8MPa nitrogen at 720°C for 10 minutes, and let it stand for...

Embodiment 3

[0055] An aluminum-magnesium-silicon alloy monofilament, the mass percentage of each component is:

[0056] element magnesium silicon erbium Lanthanum (Cerium) boron Vanadium + Titanium + Chromium + Manganese aluminum Mass fraction / wt.%0.600.400.300.040.020.007 margin

[0057] The electrical pure aluminum ingot with a purity of 99.7% is added to the melting furnace, and the melting temperature is 740℃; after the pure aluminum is completely melted, the lanthanum-cerium mixed rare earth and the aluminum-boron intermediate alloy are added at 735℃. , Stand for 50min; pour the upper aluminum liquid of the 4 / 5 melting furnace into another holding furnace, add pure magnesium, aluminum-silicon master alloy, aluminum-erbium master alloy at 740℃, stir for 15min after complete melting, and stand for 20min . Make their final content as shown above. Blow in 0.5-0.8MPa nitrogen at 730°C for 15 minutes, and let it stand for 25 minutes before removing slag. The aluminum alloy liquid was p...

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Abstract

The invention provides an aluminum-magnesium-silicon alloy monofilament and a preparation method thereof. The alloy monofilament comprises, by mass percent, 0.50%-0.70% of magnesium, 0.30%-0.50% of silicon, 0.30%-0.50% of erbium, 0-0.08% of lanthanum (cerium), 0.01%-0.02% of boron, not larger than 0.01% of impurity elements vanadium, titanium, chromium and manganese and the balance aluminum and inevitable impurities. The preparation method of the monofilament comprises the steps of smelting, refinement, casting, rolling, wire drawing and aging treatment. The proportion of the components included in the aluminum-magnesium-silicon alloy monofilament is adjusted, the preparation process corresponding to the aluminum-magnesium-silicon alloy monofilament is selected, and the aluminum alloy monofilament with electric conductivity being larger than or equal to 56%IACS(20 DEG C), tensile strength being larger than or equal to 300 MPa and ductility being larger than or equal to 3.0% is obtained.

Description

Technical field [0001] The invention relates to an electrical conductor material, specifically a design and an aluminum alloy monofilament. Background technique [0002] With the rapid development of industry, the demand for electricity is increasing year by year. The overall performance of overhead conductors as an important carrier of power transmission in the power grid directly affects the safety of power transmission and the efficiency of energy transmission. High-strength overhead conductors can not only ensure the safety of the conductors in harsh service environments such as ice coating and wind load, but also have high electrical conductivity that can improve the power transmission efficiency of power transmission lines and reduce transmission losses. [0003] Aluminum-magnesium-silicon alloy is the material of choice for long-distance and large-span transmission lines because of its low degree of alloying, high specific strength, good mechanics and electrical conductivit...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C1/03C22F1/047
CPCC22C1/026C22C1/03C22C21/08C22F1/002C22F1/047
Inventor 陈保安潘学东张静媛赵丽丽赵蕊刘刚程鹏明祝志祥张强丁一陈新韩钰张磊陈素红
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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