Heat treatment technology of 2024 aluminum alloy thin plates

An aluminum alloy, sheet technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve problems such as scrap, tensile properties, intergranular corrosion unqualified, affecting the company's production progress, etc. Corrosion performance and fatigue performance improvement effect

Inactive Publication Date: 2015-05-06
青岛齐力铸钢有限公司
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Problems solved by technology

In the process of raw material testing and parts production, the 2024 aluminum alloy sheet often has unqualified tensile properties and intergranular corrosion after being treated by the current heat treatment process.
As a result, raw materials cannot be put into storage or parts are scrapped, which will affect the company's production schedule

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0014] The heat treatment process of the 2024 aluminum alloy sheet of the present embodiment comprises the following steps:

[0015] (1) Select the 2024 aluminum alloy clad aluminum plate with a thickness of 2.0mm, and use a box-type air circulation resistance furnace for heat treatment. The process parameters of the heat treatment are as follows: the solution temperature is 498°C, and the solution holding time is 20min to 50min. Aging at 185°C for 10 hours;

[0016] (2) After the alloy is solid solution heated, it is taken out from the resistance furnace and rapidly quenched in water to maintain its structure, and then artificially aged. After the aging is completed, it is air-cooled to room temperature to obtain a heat-treated alloy.

[0017] The heat-treated 2024 aluminum alloy sheet has significantly improved mechanical properties, corrosion resistance and fatigue properties.

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Abstract

The invention discloses a heat treatment technology of 2024 aluminum alloy thin plates. Technological parameters of heat treatment are changed to obtain the following optimal technological parameters: solid solution is carried out at 498DEG C for 20min, and ageing is carried out at 185DEG C for 10h. The technology solves a problem that the production schedule of a company is influenced by no warehousing of raw materials or part discarding due to unqualified tensile property and unqualified intercrystalline corrosion of 6061 aluminum alloys prepared in the prior art. The optimized heat treatment technology obviously improves the mechanical properties, the corrosion resistance and the fatigue resistance of the 2024 aluminum alloy thin plates.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a heat treatment process of a 2024 aluminum alloy thin plate. [0003] Background technique [0004] 2024 aluminum alloy is a kind of hard aluminum, which is a material developed in the United States in the 1940s. Cu and Mg are the main alloying elements in 2024 aluminum alloy. In the process of raw material testing and parts production, the 2024 aluminum alloy sheet often has unqualified tensile properties and intergranular corrosion after being treated by the current heat treatment process. As a result, raw materials cannot be stored or parts are scrapped, which affects the company's production schedule. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems in the prior art, the object of the present invention is to provide a heat treatment process for 2024 aluminum alloy sheet, which can directly cast ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04C21D9/46
CPCC22F1/04C22F1/002
Inventor 刘占向
Owner 青岛齐力铸钢有限公司
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