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A medium-strength aluminum alloy rod for cables and its preparation method

A medium-strength aluminum alloy and aluminum alloy rod technology, which is applied in the field of aluminum alloys, can solve the problems that tensile-resistant aluminum alloys cannot obtain performance, achieve reasonable deformation, balance elongation and yield strength, and prevent breakage

Active Publication Date: 2017-06-30
ANHUI ELECTRIC GRP SHARES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, due to the continuous increase in product performance requirements, in the process of preparing medium-strength aluminum alloy rods, the tensile-resistant aluminum alloy obtained by the existing preparation process cannot obtain ideal performance. , providing a good equipment basis for the preparation process control of tensile aluminum alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of preparation method of medium-strength aluminum alloy rod for electric cable that the present invention proposes, comprises the following steps:

[0022] S1. Melting: Melt aluminum ingots, aluminum-silicon alloys, aluminum-iron alloys, aluminum-rare earth alloys, and magnesium ingots at 720°C to form an alloy liquid, then perform degassing and refining at 740°C, and then keep the temperature at 720°C for 50 minutes , to obtain an ingot by casting; wherein, the composition of the alloy liquid is regulated before casting, and the composition of the alloy liquid after regulation includes: iron≤0.30%, silicon 0.30%, magnesium 0.50%, rare earth 0.10%, and the balance is aluminum; During the degassing refining process, the amount of refining agent added is 0.4% of the charge weight, and the hydrogen content in the alloy liquid after refining is 0.10ml / 100g;

[0023] S2. Rolling: The ingot obtained in S1 is water-cooled. When the ingot is water-cooled, the cooling wat...

Embodiment 2

[0027] A kind of preparation method of medium-strength aluminum alloy rod for electric cable that the present invention proposes, comprises the following steps:

[0028] S1. Melting: Melt aluminum ingots, aluminum-silicon alloys, aluminum-iron alloys, aluminum-rare earth alloys, and magnesium ingots at 750°C to form an alloy liquid, then conduct degassing and refining at 730°C, and then keep the temperature at 730°C for 30 minutes , to obtain an ingot by casting; wherein, the composition of the alloy liquid is regulated before casting, and the composition of the alloy liquid after regulation includes: iron≤0.30%, silicon 0.50%, magnesium 0.30%, rare earth 0.15%, and the balance is aluminum; During the degassing refining process, the amount of refining agent added is 0.4% of the charge weight, and the hydrogen content in the alloy liquid after refining is 0.10ml / 100g;

[0029] S2. Rolling: The ingot obtained in S1 is water-cooled. When the ingot is water-cooled, the cooling wat...

Embodiment 3

[0033] A kind of preparation method of medium-strength aluminum alloy rod for electric cable that the present invention proposes, comprises the following steps:

[0034] S1. Melting: Melt aluminum ingots, aluminum-silicon alloys, aluminum-iron alloys, aluminum-rare earth alloys, and magnesium ingots at 735°C to form an alloy liquid, then conduct degassing and refining at 736°C, and then keep the temperature at 728°C for 35 minutes , to obtain an ingot by casting; wherein, the composition of the alloy liquid is regulated before casting, and the composition of the alloy liquid after regulation includes by mass fraction: iron≤0.30%, silicon 0.48%, magnesium 0.36%, rare earth 0.14%, and the balance is aluminum; During the degassing refining process, the amount of refining agent added is 0.37% of the charge weight, and the hydrogen content in the alloy liquid after refining is 0.11ml / 100g;

[0035] S2. Rolling: The ingot obtained in S1 is water-cooled. When the ingot is water-coole...

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PUM

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Abstract

The invention discloses a production method of a medium-strength aluminum alloy rod for cables. The method comprises the following steps: melting aluminum ingots, aluminum-silicon alloy, aluminum-iron alloy, aluminum-rare earth alloy and magnesium ingots to form an alloy liquid, carrying out degassing refining, carrying out heat insulation standing, and casting to obtain cast ingots, wherein the alloy liquid comprises, by mass, 0.30% or less of iron, 0.30-0.50% of silicon, 0.30-0.50% of magnesium, 0.10-0.15% of rare earth, and the balance of aluminum; carrying out water cooling on the obtained cast ingots, carrying out hot rolling, and cooling to obtain a hot-rolled aluminum alloy rod; carrying out solid solution treatment on the hot-rolled aluminum alloy rod to obtain a solid solution treated aluminum alloy rod; and naturally ageing the solid solution treated aluminum alloy rod for 1-2h, and artificially ageing at 150-160DEG C for 3.5-4h to obtain the medium-strength aluminum alloy rod for cables. The invention also discloses the medium-strength aluminum alloy rod for cables.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a medium-strength aluminum alloy rod for cables and a preparation method thereof. Background technique [0002] At present, with the development of conductor alloying, transmission wires using aluminum alloy materials as conductor materials and reinforcement materials are also widely used at home and abroad. The representative types include all aluminum alloy stranded wires and aluminum alloy cored aluminum stranded wires. The all-aluminum alloy stranded wire is composed of the same material, the manufacturing process is very simple, and it has many advantages in engineering applications. In the existing technology, due to the continuous increase in product performance requirements, in the process of preparing medium-strength aluminum alloy rods, the tensile-resistant aluminum alloy obtained by the existing preparation process cannot obtain ideal performance. , which pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C21/02C22C21/08C22F1/04C22F1/043C22F1/047C22F1/05H01B13/00H01B1/02
Inventor 赵建军黄海琴吴松如
Owner ANHUI ELECTRIC GRP SHARES
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