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Al-Fe-Hf-RE aluminium alloy, preparation method thereof and power cable

An al-fe-hf-re, power cable technology, applied in the field of alloys, can solve problems such as poor comprehensive performance, poor fatigue resistance, and quality problems of aluminum alloy power cables

Active Publication Date: 2013-05-15
ANHUI JOY SENSE CABLE
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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-Hf-RE aluminium alloy, preparation method thereof and power cable
  • Al-Fe-Hf-RE aluminium alloy, preparation method thereof and power cable
  • Al-Fe-Hf-RE aluminium alloy, preparation method thereof and power cable

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preparation example Construction

[0067] The present invention also provides a method for preparing an Al-Fe-Hf-RE aluminum alloy, comprising the following steps:

[0068]a) Casting raw materials with the following composition 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, 0.002~0.25wt% Li, 0.001~0.2wt% Na, 0.002~0.25wt% K, 0.001~0.2wt% Ti, 0.001~0.15wt% V, 0.001~0.12wt% Cr, 0.001~0.12wt% Mn, 0.001~0.15wt% Ni , 0.001~0.2wt% of Ga, 0.003~0.2wt% of Ge, 0.001~0.2wt% of Rb, 0.001~0.15wt% of Nb, 0.001~0.2wt% of Mo, 0.001~0.25wt% of Tc, 0.001 ~0.15wt% Ru, 0.002~0.1wt% Rh, 0.001~0.12wt% Pd, 0.001~0.1wt% Ag, 0.002~0.13wt% Cd, 0.003~0.18wt% In, 0.001~0.08 wt% Sn, 0.001~0.3wt% Sb, 0.001~0.2wt% Cs, 0.001~0.08wt% Ba, 0.001~0.22wt% Hf, 0.01~3.0wt% RE, greater than zero and less than or equal to 0.2wt% of Si, greater than zero and less than or equal to 0.8wt% of B and the balance of...

Embodiment 1

[0081](1) Put the aluminum ingot into the furnace, heat it to melt and keep it warm at 720°C. 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, Al-B, Al-Li, Al-Na, Al-K, Al-Ti, Al-V, Al-Cr, Al -Mn, Al-Ni, Al-Ga, Al-Ge, Al-Rb, Al-Nb, Al-Mo, Al-Tc, Al-Ru, Al-Rh, Al-Pd, Al-Ag, Al-Cd , Al-In, Al-Sn, Al-Sb, Al-Cs, Al-Ba and Al-Hf master alloys, stir evenly, then add rare earth RE and stir for 20 minutes until fully stirred evenly, and keep it for 30 minutes; Refining the melt in the furnace; adding refining agent to the alloy melt, stirring evenly, then standing for 30 minutes, and operating the melt refining in a sealed environment; The liquid is poured out of the furnace, and after degassing and slag removal, it enters the casting machine for casting to obtain aluminum alloy ingots. The composition of the ingots is listed in Table 1;

[0082] (2) Heat up the aluminum alloy ingot obtained in...

Embodiment 2

[0087] (1) Put the aluminum ingot into the furnace, heat it to melt and keep it warm at 740°C. The melting process is completed in a sealed environment; first add Fe, Cu, Mg, Co, Be, Ca, Zn, Sr, Zr, Si , B, Li, Na, K, Ti, V, Cr, Mn, Ni, Ga, Ge, Rb, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Cs, Ba and Hf, stir evenly, then add rare earth RE and stir for 20 minutes until it is fully stirred evenly, and keep it for 30 minutes; then refine the above alloy melt in the furnace; For 30 minutes, the melt refining is operated in a sealed environment; after refining, the slag is removed, the temperature is adjusted to 720°C, 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 Ingot, the composition of the ingot is listed in Table 1;

[0088] (2) Heat up the aluminum alloy ingot obtained in step (1) at a rate of 3°C / min to 550°C, hold it for 16 hours and then roll it into a rod;...

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Abstract

The invention provides an Al-Fe-Hf-RE aluminium alloy and a preparation method thereof. The preparation method comprises the following steps of: a) casting an aluminium alloy cast ingot; b) homogenizing the aluminium alloy cast ingot and rolling the homogenized aluminium alloy cast ingot to obtain an aluminium alloy rod material; c) intermittently annealing the aluminium alloy rod material obtained in the step b); and d) aging the aluminium alloy rod material obtained in the step c), thus obtaining the aluminium alloy. The invention also provides a power cable. The aluminium alloy has better overall performances by selecting and controlling the added elements and adopting a reasonable preparation process.

Description

technical field [0001] The invention relates to the field of alloy technology, in particular to an Al-Fe-Hf-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 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, and 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 expanded the application fields of aluminum alloys. [0003] A power cable is a resource used to transmit and distribute electrical energy, and its basic structure consists of four parts: a core, an insulating layer, a shieldi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22F1/04C21D8/08H01B1/02H01B9/00
Inventor 林泽民
Owner ANHUI JOY SENSE CABLE
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