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A kind of rare earth aluminum alloy and preparation method thereof

A technology of aluminum alloy and aluminum alloy rod, which is applied in the field of alloy, can solve the problems of electrical properties and tensile properties to be improved, and achieve the effects of improving low-temperature anti-corrosion performance, improving processing plasticity, and good electrical conductivity

Active Publication Date: 2017-11-07
李政汉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aluminum alloy conductor materials in the prior art have done a lot of research and improvement in terms of electrical properties, corrosion resistance, mechanical properties, processing properties, creep resistance, etc., but for the corrosion resistance of aluminum alloy cables in low temperature environments performance, as well as electrical and tensile properties at low temperatures to be improved

Method used

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  • A kind of rare earth aluminum alloy and preparation method thereof
  • A kind of rare earth aluminum alloy and preparation method thereof
  • A kind of rare earth aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Put the aluminum ingot into the melting furnace, heat it to 700°C to melt it, raise the temperature to 830°C, and keep it for 30 minutes; then add Cu, Sn, rare earth Pr, raise the temperature to 950°C to melt it, and keep it warm for 20 minutes Then add V, Mn, Cr, the temperature rises to 1200°C, and keep it warm for 30 minutes; then add rare earth Er, raise the temperature to 1450°C, stir for 10 minutes, and keep it warm for 30 minutes; cool down to 735°C, and then melt the above alloy Refining in the furnace; adding refining agent to the alloy melt, stirring evenly, and then standing and keeping warm for 30 minutes. After refining, remove slag, let it stand still, and adjust the temperature to 660°C. The alloy liquid is poured out of the furnace, and after degassing and slag removal, it enters the casting machine for casting. The speed of the casting machine is controlled at 2.5m / min, and the aluminum alloy casting is obtained. Ingot, the composition of the ingot ...

Embodiment 2

[0044] (1) Put the aluminum ingot into the furnace, heat it to 750°C to melt it, raise the temperature to 850°C, and keep it for 30 minutes; then add Cu, Sn, rare earth Pr, raise the temperature to 1050°C to melt it, and keep it warm for 20 minutes Then add V, Mn, Cr, the temperature rises to 1300°C, and keep it warm for 30 minutes; then add rare earth Er, raise the temperature to 1550°C, stir for 10 minutes, and keep it warm for 30 minutes; drop the temperature to 740°C, and then melt the above alloy Refining in the furnace; adding refining agent to the alloy melt, stirring evenly, and then standing and keeping warm for 30 minutes. After refining, remove slag, let it stand still, and adjust the temperature to 660°C. The alloy liquid is poured out of the furnace, and after degassing and slag removal, it enters the casting machine for casting. The speed of the casting machine is controlled at 3.5m / min, and the aluminum alloy casting is obtained. Ingot, the composition of the in...

Embodiment 3

[0048] (1) Put the aluminum ingot into the melting furnace, heat it to 730°C to melt it, raise the temperature to 835°C, and keep it for 30 minutes; then add Cu, Sn, rare earth Pr, raise the temperature to 1000°C to melt it, and keep it warm for 20 minutes Then add V, Mn, Cr, the temperature rises to 1250°C, and keep it warm for 30 minutes; then add rare earth Er, raise the temperature to 1500°C, stir for 10 minutes, and keep it warm for 30 minutes; drop the temperature to 738°C, and then melt the above alloy Refining in the furnace; adding refining agent to the alloy melt, stirring evenly, and then standing and keeping warm for 30 minutes. After refining, remove slag, let it stand still, and adjust the temperature to 660°C. The alloy liquid is poured out of the furnace, and after degassing and slag removal, it enters the casting machine for casting. The speed of the casting machine is controlled at 3.0m / min, and the aluminum alloy casting is obtained. Ingot, the composition o...

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Abstract

The invention relates to the field of alloy technology, in particular to a rare earth aluminum alloy and a preparation method thereof. The rare earth aluminum alloy in the present invention comprises the following components by weight percentage: 1.1-1.3wt% of Cu; 0.9-1.1wt% of V; 1.3-1.4wt% of Mn; 0.45-0.55wt% of Sn; 0.12 -0.14 wt% Cr; 0.85-0.98 wt% Pr; 0.45-0.66 wt% Er; balance aluminum. In the preparation method of the rare earth aluminum alloy in the present invention, the aluminum ingot is first melted, and then the corresponding alloying elements are sequentially added to the melted aluminum liquid at different temperatures, and then cast, homogenized, and rolled under certain conditions. Made of aluminum alloy rods, and then processed through drawing, twisting, annealing, extrusion, and cable forming processes, and finally made into rare earth aluminum alloy cables. The rare earth aluminum alloy in the present invention not only has good corrosion resistance at low temperature, but also has more excellent electrical properties and tensile properties at low temperature.

Description

technical field [0001] The invention relates to the field of alloy technology, in particular to a rare earth aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and it is widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. With the rapid development of science and technology and industrial economy, the demand for aluminum alloys is increasing, so the research on aluminum alloys is also in-depth. The wide application of aluminum alloys has promoted the development of aluminum alloys in the power industry, and at the same time the development of the power industry has broadened the application fields of aluminum alloys. [0003] The basic component of the power industry - power cable, is a resource used to transmit and distribute electric energy. Its basic structure consists of four parts: core, insulatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04
Inventor 李政汉
Owner 李政汉
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