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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  • 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 medium-strength aluminum

Method used

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  • Intermediate-strength aluminium alloy rod and preparation method thereof

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Example Embodiment

[0029] Reference figure 1 The present invention provides a method for preparing a medium-strength aluminum alloy rod, which includes the following steps:

[0030] S1: Melting: Melting aluminum ingots, aluminum-silicon alloys, aluminum-iron alloys, magnesium ingots, and aluminum-rare earth alloys at 720-750℃ to form alloy liquid, and then degassing and refining at 730-740℃, and then at 720-730 Keep holding at ℃ for 30-50 minutes, and cast to obtain ingots; adjust the composition of the alloy liquid before casting, and the composition of the alloy liquid after control 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: the ingot obtained by S1 is water-cooled and then hot-rolled to obtain a hot-rolled aluminum alloy rod after cooling;

[0032] S3: Aging: the hot-rolled aluminum alloy rod obtained by S2 is artificially aged, the artificial aging temperature is 150-160℃, and the artificial aging time i...

Example Embodiment

[0034] Example 1

[0035] The 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 liquid at 740℃, add aluminum-silicon alloy, aluminum-iron alloy, aluminum-rare earth alloy, and wait for aluminum-silicon alloy, aluminum-iron alloy, aluminum -After the rare earth alloy is melted, magnesium ingot is added to form alloy liquid, refining agent is added at 735°C for degassing and refining, kept at 725°C for 40 minutes, and cast to obtain an ingot;

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

[0038] During the degassing refining process, the amount of refining agent added is 0.35% of the charge weight, a...

Example Embodiment

[0041] Example 2

[0042] The 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 liquid at 750℃, add aluminum-silicon alloy, aluminum-iron alloy, aluminum-rare earth alloy, and wait for aluminum-silicon alloy, aluminum-iron alloy, aluminum -After the rare earth alloy is melted, magnesium ingot is added to form an alloy liquid, refining agent is added at 740°C for degassing and refining, and the temperature is kept at 730°C for 30 minutes, and the ingot is obtained by casting;

[0044] Among them, the composition of the alloy liquid is adjusted before casting, and the composition of the alloy liquid after the adjustment includes by mass fraction: iron 0.23%, silicon 0.30%, magnesium 0.50%, rare earth 0.10%, and the balance is aluminum;

[0045] In the process of degassing refining, the amount of refining agent ad...

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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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