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Al-Fe-Si-B-RE aluminum alloy, and preparation method and power cable thereof

An al-fe-si-b-re, power cable technology, applied in the field of alloys, can solve the problems of poor comprehensive performance, quality problems, safety hazards and other problems of aluminum alloy power cables

Active Publication Date: 2013-03-20
于贵良 +1
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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 are relatively excellent in electrical properties, corrosion resistance and mechanical properties, etc., but are still relatively poor in fatigue resistance, which is prone to quality problems and affects the service life or band of the aluminum alloy material. Therefore, the overall performance of aluminum alloy power cables is still poor

Method used

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  • Al-Fe-Si-B-RE aluminum alloy, and preparation method and power cable thereof
  • Al-Fe-Si-B-RE aluminum alloy, and preparation method and power cable thereof
  • Al-Fe-Si-B-RE aluminum alloy, and preparation method and power cable thereof

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preparation example Construction

[0066] The invention also provides a method for preparing Al-Fe-Si-B-RE aluminum alloy, which includes the following steps:

[0067] a) Casting the following raw materials to obtain an aluminum alloy ingot: 0.01~1.6wt% Fe, 0.001~0.3wt% Cu, 0.001~0.3wt% Mg, 0.001~0.3wt% Co, 0.001~0.2 wt% Be, 0.001~0.3wt% Ca, 0.001~0.2wt% Zn, 0.001~0.3wt% Sr, 0.001~0.3wt% Zr, 0.01~3.0wt% RE, greater than zero and less than or equal 0.2wt% Si, greater than zero and less than or equal to 0.8wt% B and the balance aluminum;

[0068] b) homogenizing the aluminum alloy ingot, and rolling the homogenized aluminum alloy ingot to obtain an aluminum alloy rod;

[0069] c) subjecting the aluminum alloy rod obtained in step b) to batch annealing treatment;

[0070] d) subjecting the aluminum alloy rod obtained in step c) to aging treatment to obtain an aluminum alloy.

[0071] According to the present invention, step a) is a casting process to obtain an aluminum alloy ingot. In order to fully dissolve various eleme...

Embodiment 1

[0080] (1) Put the aluminum ingot into the furnace, heat it to melt and keep it at 720℃. The melting process is completed in a sealed environment; first add Fe, Cu, Mg, Co, Be, Ca, Zn, Sr, Zr, Si And B, after stirring evenly, add rare earth RE and stir for 20 minutes until fully stirred and evenly, and keep it for 30 minutes; then refining the above alloy melt in the furnace; add the refining agent to the alloy melt and stir it evenly, then stand for heat preservation 30min, the melt refining is operated in a sealed environment; after refining, slagging, standing, and adjusting the temperature to 650℃, the alloy liquid is poured out of the furnace, and after degassing and slag removal, it enters the casting machine for casting to obtain aluminum alloy casting The ingot, the composition of the ingot is listed in Table 1;

[0081] (2) The aluminum alloy ingot obtained in step (1) is heated at a rate of 5°C / min, the temperature is raised to 450°C, and the temperature is kept for 6 h...

Embodiment 2

[0086] (1) Put the aluminum ingot into the furnace, heat it to melt and keep it at 740℃. The melting process is completed in a sealed environment; first add Al-Fe, Al-Cu, Al-Mg, Al-Co, Al-Be , Al-Ca, Al-Zn, Zn-Sr, Al-Zr, Al-Si and Al-B master alloys, stir evenly, then add rare earth RE and stir for 20 minutes until fully stirred and evenly, stand for 30 minutes; The melt is refined in the furnace; the refining agent is added to the alloy melt, and the mixture is stirred evenly, and then allowed to stand for 30 minutes. The melt refining is operated in a sealed environment; after refining, the slagging, standing, and temperature adjustment to 720 ℃, alloy The liquid is poured out of the furnace, and after degassing and slag removal, it enters the casting machine for casting to obtain an aluminum alloy ingot. The composition of the ingot is listed in Table 1;

[0087] (2) The aluminum alloy ingot obtained in step (1) is heated at a rate of 3°C / min, the temperature is raised to 550°...

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Abstract

The invention provides an Al-Fe-Si-B-RE aluminum alloy, and a preparation method of the Al-Fe-Si-B-RE aluminum alloy. The method comprises the steps that: (a) an aluminum alloy ingot is cast; (b) the aluminum alloy ingot is subjected to a homogenization treatment; and the obtained aluminum alloy ingot is rolled, such that an aluminum alloy rod material is obtained; (c) the aluminum alloy rod material obtained in the step (b) is subjected to a batch-type annealing treatment; and (d) the aluminum alloy rod material obtained in the step (c) is subjected to an aging treatment, such that aluminum alloy is obtained. The invention also provides a power cable. According to the invention, through the selection and control over added elements and the adoption of a reasonable preparation process, the obtained aluminum alloy is provided with good comprehensive performance.

Description

Technical field [0001] The invention relates to the technical field of alloys, in particular to an Al-Fe-Si-B-RE aluminum alloy, a preparation method thereof, and a power cable. 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 industries. With the rapid development of science and technology and industrial economy, the demand for aluminum alloys is increasing, and the research on aluminum alloys is also intensified. The wide application of aluminum alloy has promoted the development of aluminum alloy in the power industry, and at the same time, the development of the power industry has expanded the application fields of aluminum alloy. [0003] Power cable is a resource used to transmit and distribute electric energy. Its basic structure consists of four parts: core, insulation layer, shielding layer and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/02C22C21/08C22C21/10C22C21/18C22F1/04C22F1/043C22F1/047C22F1/05C22F1/053C22F1/057H01B1/02H01B9/02H01B13/00
Inventor 林泽民
Owner 于贵良
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