Intermediate-strength aluminium alloy rod and preparation method thereof

A medium-strength aluminum alloy and alloy liquid technology, which is applied in the field of aluminum alloys, can solve the problems that medium-strength aluminum alloys cannot obtain properties, and achieve the effects of good mechanical properties and corrosion resistance, prevention of strength loss, and reasonable deformation.

Active Publication Date: 2015-09-02
ANHUI ELECTRIC GRP SHARES
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 medium-strength aluminum alloy obtained by the existing preparation process cannot obtain ideal performance. It provides a good equipment basis for the preparation process control of medium-strength aluminum alloys

Method used

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  • Intermediate-strength aluminium alloy rod and preparation method thereof

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preparation example Construction

[0029] refer to figure 1 , the present invention proposes a method for preparing a medium-strength aluminum alloy rod, comprising the following steps:

[0030] S1: Smelting: Melt aluminum ingots, aluminum-silicon alloys, aluminum-iron alloys, magnesium ingots, and aluminum-rare earth alloys at 720-750°C to form alloy liquids, then conduct degassing and refining at 730-740°C, and then refine them at 720-730°C Keep it warm at ℃ for 30-50 minutes, and cast ingots to obtain ingots; before casting, adjust the composition of the alloy liquid. After the adjustment, the composition of the alloy liquid includes: iron ≤ 0.30%, silicon 0.30-0.50%, magnesium 0.30-0.50% , rare earth 0.10-0.15%, the balance is aluminum;

[0031] S2: Rolling: water-cooling the ingot obtained in S1, and then hot-rolling to obtain a hot-rolled aluminum alloy rod after cooling;

[0032] S3: Aging: artificially aging the hot-rolled aluminum alloy rod obtained in S2, the artificial aging temperature is 150-160°...

Embodiment 1

[0035] A method for preparing a medium-strength aluminum alloy rod proposed in this embodiment includes the following steps:

[0036] S1: Melting: Put the aluminum ingot into the melting furnace. After the aluminum ingot is melted into a liquid state at 740°C, add aluminum-silicon alloy, aluminum-iron alloy, aluminum-rare earth alloy, and wait for the aluminum-silicon alloy, aluminum-iron alloy, aluminum - After the rare earth alloy is melted, magnesium ingots are added to form an alloy liquid, and a refining agent is added at 735°C for degassing and refining, and the heat preservation is carried out at 725°C for 40 minutes, and the ingot is obtained by casting;

[0037] Among them, the composition of the alloy liquid is adjusted before casting, and the composition of the alloy liquid after adjustment includes: 0.20% iron, 0.40% silicon, 0.40% magnesium, 0.12% rare earth, and the balance is aluminum;

[0038] During the degassing and refining process, the amount of refining ag...

Embodiment 2

[0042] A method for preparing a medium-strength aluminum alloy rod proposed in this embodiment includes the following steps:

[0043] S1: Melting: Put the aluminum ingot into the melting furnace. After the aluminum ingot is melted into a liquid state at 750°C, add aluminum-silicon alloy, aluminum-iron alloy, aluminum-rare earth alloy, and wait for the aluminum-silicon alloy, aluminum-iron alloy, aluminum - After the rare earth alloy is melted, magnesium ingots are added to form an alloy liquid, and a refining agent is added at 740°C for degassing and refining, and the heat preservation is carried out at 730°C for 30 minutes, and cast to obtain ingots;

[0044] Among them, the composition of the alloy liquid is controlled before casting. After the control, the composition of the alloy liquid includes: 0.23% iron, 0.30% silicon, 0.50% magnesium, 0.10% rare earth, and the balance is aluminum;

[0045] During the degassing refining process, the amount of refining agent added is 0....

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Abstract

The invention discloses a preparation method for an intermediate-strength aluminium alloy rod. The preparation method comprises the following steps: smelting an aluminium ingot, aluminium-silicon alloy, aluminium-iron alloy, a magnesium ingot and aluminium-tombarthite alloy at 720-750 DEG C to form an alloy liquid, then degassing and refining at 730-740 DEG C, then standing at 720-730 DEG C for 30-50 min, and casting to obtain an ingot; adjusting and controlling alloy liquid components before casting, wherein the adjusted and controlled alloy liquid comprises the following components in percentage by weight: smaller than or equal to 0.30% of alloy, 0.30-0.50% of silicon, 0.30-0.50% of magnesium, 0.10-0.15% of tombarthite and the balance of aluminium; performing water cooling on the obtained ingot, then conducting hot rolling, and cooling so as to obtain a hot rolled aluminium alloy rod; conducting artificial aging on the obtained hot rolled aluminium alloy rod, wherein the artificial aging temperature is 150-160 DEG C, and the artificial aging time is 3.5-4 h, so as to obtain the intermediate-strength aluminium alloy rod. The invention further discloses the intermediate-strength aluminium alloy rod obtained by adopting the preparation method for the intermediate-strength aluminium alloy rod.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a medium-strength aluminum alloy rod 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 medium-strength aluminum alloy obtained by the existing preparation process cannot obtain ideal performance. It provides a good equip...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C21/08C22C1/03C22F1/05
Inventor 赵建军吴松如朱家俊
Owner ANHUI ELECTRIC GRP SHARES
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