An integrated heat treatment process combining homogenization and heating and aluminum alloy ingot casting

A homogeneous heat treatment and aluminum alloy ingot casting technology, which is applied in the field of aluminum alloy materials, can solve problems such as surface defects and low gloss of mirror aluminum alloys, and achieve the effects of increased product qualification rate, reduced manufacturing cost, and increased quantity

Active Publication Date: 2021-04-27
中铝河南洛阳铝加工有限公司 +1
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  • 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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  • An integrated heat treatment process combining homogenization and heating and aluminum alloy ingot casting
  • An integrated heat treatment process combining homogenization and heating and aluminum alloy ingot casting
  • An integrated heat treatment process combining homogenization and heating and aluminum alloy ingot casting

Examples

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Effect test

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 an integrated heat treatment process combining homogenization and heating and aluminum alloy castings. The process is aimed at 8000 series aluminum alloys with high Fe element content, including a homogenization heat treatment process and a heating heat treatment process, which can promote the ingot microstructure The second phase containing Fe is diffusely distributed, discontinuously distributed in a rod shape at the grain boundary, and spherically dispersed in the grain, which improves the material properties. The aluminum alloy castings using this process are subsequently processed into mirror panels without streaks and pitting defects, with high gloss and reduced overall manufacturing costs, which are suitable for industrial production of high-end 8000 series mirror aluminum alloy sheets and 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 Patents(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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