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Aluminium alloy wire with high strength and high electrical conductivity, and preparation method thereof

A technology of aluminum alloy wire and manufacturing method, which is applied in the direction of metal/alloy conductors, cable/conductor manufacturing, electrical components, etc., can solve the problems of ignoring texture utilization and ignoring, and achieve reduced investment costs, good heat resistance, and increased The effect of transmission capacity

Inactive Publication Date: 2012-10-10
SHENZHEN ZHAOFANG VENTURE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various articles and patents are exploring alloying methods, ignoring the improvement of the performance of aluminum conductors from the organizational structure, especially ignoring the use of texture

Method used

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  • Aluminium alloy wire with high strength and high electrical conductivity, and preparation method thereof
  • Aluminium alloy wire with high strength and high electrical conductivity, and preparation method thereof
  • Aluminium alloy wire with high strength and high electrical conductivity, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A

[0050] 1. Ingredients: per ton of A99.7 industrial pure aluminum ingot: 7kg of Al-Fe (containing Fe20%) master alloy; 6kg of Al-Cu (containing Cu20%) master alloy, 2kg of Al-Sc (containing Sc2% ) master alloy.

[0051] 2. Melting: Put the pure aluminum ingot into the melting furnace to melt, and after the molten aluminum temperature rises above 800°C, add Al-Fe and Al-Cu intermediate alloys in sequence; import the molten aluminum into the holding furnace, and control the temperature Between 750°C and 800°C, add 4Kg of mixed rare earth master alloy Al-Re (containing 9% Re) per ton of aluminum ingot and 3Kg of aluminum-boron master alloy Al-B (containing 2.5% of B) per ton of aluminum ingot Remove impurities; then use nitrogen to drive the refining agent to blow into the molten aluminum from the bottom of the furnace to degas; Components are analyzed and adjusted. Filtrate with a 35ppi porous ceramic plate, pour aluminum liquid at a temperature of 750°C to 800°C into the cryst...

Embodiment 1B

[0059] 1. Ingredients: per ton of A99.7 industrial pure aluminum ingot: 7kg of Al-Fe (containing Fe20%) master alloy; 6kg of Al-Cu (containing Cu20%) master alloy, 2kg of Al-Sc (containing Sc2% ) master alloy.

[0060] 2. Melting: Put the pure aluminum ingot into the melting furnace to melt, and after the molten aluminum temperature rises above 800°C, add Al-Fe master alloy; lead the molten aluminum into the holding furnace, and control the temperature at 750°C-800°C ℃, add 4Kg of rare earth master alloy Al-Re (containing Re 9%) per ton of aluminum ingot and 3Kg of aluminum-boron master alloy Al-B (containing 2.5% of B) per ton of aluminum ingot to remove impurities; Drive the refining agent to blow into the molten aluminum from the bottom of the furnace to degas; add 2Kg of master alloy Al-Sc (including 2% Sc) per ton of aluminum ingot after slag removal, and let it stand for 30 minutes, during which the composition in the furnace is analyzed and adjusted. Filtrate with a 35...

Embodiment 2A

[0069] 1. Ingredients: per ton of A99.7 industrial pure aluminum ingot: 30kg of Al-Fe (containing Fe20%) master alloy; 18kg of Al-Cu (containing Cu20%) master alloy, 15kg of Al-Sc (containing Sc2% ) master alloy.

[0070] 2. Melting: Put the pure aluminum ingot into the melting furnace to melt, and after the molten aluminum temperature rises above 800°C, add Al-Fe and Al-Cu intermediate alloys in sequence; import the molten aluminum into the holding furnace, and control the temperature Between 750°C and 800°C, add 4Kg of mixed rare earth master alloy Al-Re (containing 9% Re) per ton of aluminum ingot and 3Kg of aluminum-boron master alloy Al-B (containing 2.5% of B) per ton of aluminum ingot Remove impurities; then use nitrogen to drive the refining agent to blow into the molten aluminum from the bottom of the furnace to degas; Components are analyzed and adjusted. Filtrate with a 35ppi porous ceramic plate, pour aluminum liquid at a temperature of 750°C to 800°C into the cr...

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Abstract

The invention relates to a wire material of an aluminium alloy wire, and a preparation method thereof. An aluminium alloy wire with high strength and high electrical conductivity which has a high fiber texture degree is obtained through an ultra-low temperature rapid drawing process, and the aluminium alloy wire has a fiber texture degree of more than 60%, a tensile strength of more than 130Mpa, and an electrical conductivity of more than 63% IACS. According to the invention, a micro alloying design is performed by using composites of ferrum, scandium and the like which can form Al3Me type eutectic compound particles; a certain fiber texture is obtained through a drawing process by controlling a continuous casting and rolling process; the fiber texture degree is greatly increased and the distortion caused by room temperature deformation is reduced through the ultra-low temperature rapid drawing process; and the texture orientation and the texture degree of the aluminium wire after the drawing process are adjusted through an annealing treatment, the drawing stress is relaxed, the plasticity of the wire is recovered, the resistance of the wire is reduced and the electrical conductivity of the wire is increased. Compared with the prior art, the aluminium alloy wire and the preparation method of the invention can control the deformation process in micro alloying conditions to greatly increase the strength and the electrical conductivity of the wire.

Description

technical field [0001] The invention belongs to the manufacturing technology of aluminum alloy wires, in particular to a wire with high strength and high conductivity for manufacturing power transmission cables and a preparation method thereof. Background technique [0002] Copper is a common material for power transmission cables, but there is an extreme shortage of copper resources at home and abroad. Aluminum is also a conductive metal material, but the conductivity of pure aluminum is only 64% of that of copper. However, aluminum resources are very rich, the price is cheap (the current price is about 1 / 3 of copper, or even lower), and the proportion is about 30% of copper. Comprehensive comparison of aluminum cables has very prominent advantages. Because of this, the use rate of aluminum cables is very high in the world. More than 80% of French wires and cables are aluminum conductors, and Japan's aluminum conductors also account for more than 50%. Internationally, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00H01B1/02H01B13/00
Inventor 於国良刘士斌侯科峰
Owner SHENZHEN ZHAOFANG VENTURE TECH
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