Processing method of T4-state 2024 aluminum alloy sheet

A processing method and aluminum alloy technology, which is applied in the field of aluminum alloy, can solve problems such as poor plate shape, achieve the effects of improving plate shape, increasing plate yield, and reducing unevenness

Inactive Publication Date: 2019-09-10
TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a processing method for a T4 state 2024 aluminum alloy sheet i

Method used

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  • Processing method of T4-state 2024 aluminum alloy sheet
  • Processing method of T4-state 2024 aluminum alloy sheet

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Embodiment 1

[0026] A processing method for a T4 state 2024 aluminum alloy sheet, comprising the following steps:

[0027] A. Melting and casting: according to the chemical composition and content range of 2024 aluminum alloy, the ingredients are prepared, the prepared aluminum alloy raw materials are added to the melting furnace and mixed evenly, and then melted into liquid aluminum alloy. After standing, refining, slag removal, and online degassing 1. After the filtering process, the liquid aluminum alloy is melted and cast into an aluminum alloy ingot. The specification of the aluminum alloy ingot is: 500×1680×7000mm, and the mass percentage ratio of each element of the aluminum alloy raw material is as follows:

[0028] element Si Fe Cu mn Mg Ni Zn Ti Impurities Al content 0.04 0.08 4.2 0.5 1.48 0.05 0.06 0.03 0.15 margin

[0029] B. Homogenization: The aluminum alloy ingot after melting and casting is homogenized in a soaking furnace, th...

Embodiment 2

[0038] A processing method for a T4 state 2024 aluminum alloy sheet, comprising the following steps:

[0039] A. Melting and casting: according to the chemical composition and content range of 2024 aluminum alloy, the ingredients are prepared, the prepared aluminum alloy raw materials are added to the melting furnace and mixed evenly, and then melted into liquid aluminum alloy. After standing, refining, slag removal, and online degassing 1. After the filtering process, the liquid aluminum alloy is melted and cast into an aluminum alloy ingot. The specification of the aluminum alloy ingot is: 500×1680×7000mm, and the mass percentage ratio of each element of the aluminum alloy raw material is as follows:

[0040] element Si Fe Cu mn Mg Ni Zn Ti Impurities Al content 0.04 0.08 4.2 0.5 1.48 0.05 0.06 0.03 0.15 margin

[0041] B. Homogenization: The aluminum alloy ingot after melting and casting is homogenized in a soaking furnace, th...

Embodiment 3

[0050] A processing method for a T4 state 2024 aluminum alloy sheet, comprising the following steps:

[0051] A. Melting and casting: according to the chemical composition and content range of 2024 aluminum alloy, the ingredients are prepared, the prepared aluminum alloy raw materials are added to the melting furnace and mixed evenly, and then melted into liquid aluminum alloy. After standing, refining, slag removal, and online degassing 1. After the filtering process, the liquid aluminum alloy is melted and cast into an aluminum alloy ingot. The specification of the aluminum alloy ingot is: 500×1680×7000mm, and the mass percentage ratio of each element of the aluminum alloy raw material is as follows:

[0052] element Si Fe Cu mn Mg Ni Zn Ti Impurities Al content 0.04 0.08 4.2 0.5 1.48 0.05 0.06 0.03 0.15 margin

[0053] B. Homogenization: The aluminum alloy ingot after melting and casting is homogenized in a soaking furnace, th...

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Abstract

The invention belongs to the technical field of aluminum alloys, and relates to a processing method of a T4-state 2024 aluminum alloy sheet. The processing method comprises the following steps of casting, homogenizing, ingot casting heating, hot rolling, cold rolling, bending and straightening, box type annealing, continuous annealing and finishing. Compared with the prior art, the box type annealing is added before solid solution quenching, the internal stress generated in the cold rolling process is released, so that the non-uniformity of stress in the width and the length direction of coiled materials is reduced, thus effectively solving the problem of poor plate shape of the T4-state 2024 aluminum alloy sheet prepared by an existing process.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, and relates to a processing method for a T4-state 2024 aluminum alloy thin plate. Background technique [0002] 2024 aluminum alloy belongs to the Al-Cu-Mg series aluminum alloy, which can be strengthened by heat treatment. It has the advantages of high strength, low specific gravity, good heat resistance and high fatigue strength, and is widely used in aviation, aerospace and other fields. . The production process of 2024 aluminum alloy coil T4 state thin plate is: melting and casting→soaking→heating→hot rolling→cold rolling→continuous annealing→finishing→cross cutting. The T4 state aluminum alloy 2024 thin plate produced by this production process can meet the conventional performance requirements, but there will be many problems, resulting in an increase in the scrap rate of the plate. Among them, the plate shape problem is one of the important issues that cause the increase in the s...

Claims

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Application Information

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IPC IPC(8): C22C21/18C22C1/02C22F1/057
CPCC22C1/026C22C21/18C22F1/002C22F1/057
Inventor 蔡鹏程刘俊涛宋扬赵俊才崔学团高晓亮郭富安
Owner TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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