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Homogenization and heating combined integrated heat treatment technology and aluminum alloy cast ingot

A homogeneous heat treatment and aluminum alloy ingot casting technology, which is applied in the field of aluminum alloy materials, can solve the problems of mirror aluminum alloy surface defects and low gloss, and achieve the improvement of product qualification rate, reduction of manufacturing cost, fine and uniform distribution of crystal grains Effect

Active Publication Date: 2020-04-17
中铝河南洛阳铝加工有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide an integrated heat treatment process combining homogenization and heating and aluminum alloy ingots, and use the heat treatment process to treat 8000 series aluminum alloy ingots to solve the problem of surface defects and luster easily formed on mirror aluminum alloys low degree problem

Method used

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  • Homogenization and heating combined integrated heat treatment technology and aluminum alloy cast ingot
  • Homogenization and heating combined integrated heat treatment technology and aluminum alloy cast ingot
  • Homogenization and heating combined integrated heat treatment technology and aluminum alloy cast ingot

Examples

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Embodiment 1

[0026] Example 1, the 8014 mirror aluminum alloy ingot is subjected to an integrated heat treatment of homogenization and heating, the process steps and parameters are as follows:

[0027] (1) Homogenization heat treatment: Slowly raise the temperature of the aluminum alloy ingot to 630°C, the heating rate is 30°C / h, and then heat preservation treatment for 16h;

[0028] (2) Heating heat treatment: the aluminum alloy ingot after homogenization heat treatment is cooled to 500°C, and then kept for 10 hours.

[0029] After the integrated heat treatment of homogenization and heating, the distribution of the second phase in the 8014 mirror aluminum alloy ingot is as follows: figure 2 shown. Compared with the 8014 mirror aluminum alloy ingot without heat treatment, the number of Fe-containing second phases (diameter > 0.5 μm) in the aluminum alloy ingot treated by the process described in this example is 707, and the area ratio is 1.10 %; the Fe-containing second phase is spheric...

Embodiment 2

[0030] Example 2, the 8014 mirror aluminum alloy ingot is subjected to an integrated heat treatment of homogenization and heating, the process steps and parameters are as follows:

[0031] (1) Homogenization heat treatment: Slowly raise the temperature of the aluminum alloy ingot to 610°C, the heating rate is 30°C / h, and then heat preservation treatment for 10h;

[0032] (2) Heating heat treatment: the aluminum alloy ingot after homogenization heat treatment is cooled to 510°C, and then kept for 4 hours.

[0033] After the homogenization and heating integrated process, the distribution of the second phase in the 8014 mirror aluminum alloy ingot is as follows: image 3 shown. Compared with the 8014 mirror aluminum alloy ingot without heat treatment, after the process described in this example, the number of Fe-containing second phases (diameter > 0.5 μm) in the aluminum alloy ingot is 410, and the area ratio is 0.64 %; the Fe-containing second phase is spherical and dispersed...

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Abstract

The invention provides a homogenization and heating combined integrated heat treatment technology and an aluminum alloy cast ingot. Aiming at 8000-series aluminum alloy with high Fe element content, the technology comprises a homogenizing heat treatment process and a heating heat treatment process, Fe-containing second phase dispersed distribution in a cast ingot structure can be promoted, rod-shaped intermittent distribution at a grain boundary and spherical dispersion distribution in grains are realized, and the material performance is improved. The aluminum alloy casting part adopting the technology is subsequently processed into a mirror plate, the surface of the mirror plate has no stripe-shaped and pocking mark defects, the glossiness is high, the overall manufacturing cost is reduced, and the technology is suitable for industrial production of high-end 8000-series mirror surface aluminum alloy plate strips.

Description

technical field [0001] The invention belongs to the field of aluminum alloy materials, and in particular relates to an integrated heat treatment process combining homogenization and heating and aluminum alloy casting ingots. Background technique [0002] In recent years, with the vigorous development of the architectural decoration industry and the automobile industry, the market demand for aluminum materials with special surface effects has continued to increase, especially aluminum materials with mirror effects have become more and more widely used, mainly including the lighting industry, solar energy Reflectors, architectural appearance, interior decoration, furniture, elevators, signs, interior and exterior decoration of automobiles, household appliances and consumer electronics and other industries. [0003] Iron has always been considered as a major impurity element in aluminum alloys (especially wrought aluminum alloys); in the case of high iron content, coarse needle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04C22C21/00C21D9/70
CPCC21D9/70C22C21/00C22F1/04
Inventor 吴广奇高崇刘辉王森
Owner 中铝河南洛阳铝加工有限公司
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