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Heat treatment method for cast aluminium alloy

A technology of casting aluminum alloy and heat treatment method, which is applied in the field of heat treatment of metal materials and heat treatment process of cast aluminum alloy, can solve problems such as increasing economic cost, and achieve the effects of high production efficiency, low cost and high mechanical properties

Active Publication Date: 2018-03-30
北京世联信诺科技有限公司
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Problems solved by technology

At present, the improvement of the strength of cast aluminum alloys mostly depends on the addition of new and efficient alloying elements or some complex casting processes, which increases the economic cost to a certain extent.

Method used

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  • Heat treatment method for cast aluminium alloy

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Embodiment Construction

[0018] The technical solution of the present invention will be further introduced in detail below in conjunction with the accompanying drawings of the description.

[0019] The invention discloses a heat treatment method for cast aluminum alloy, wherein, the mass percentage of the components of the cast aluminum alloy is Cu: 2.2-2.9%; Mn: 0.3-0.4%; Cd: 0.15-0.19%; Ti: 0.1-0.15%; Zr: 0.10-0.15%; Ag: 0.05-0.15%, the total impurity content is not more than 0.1%, and the balance is aluminum.

[0020] The aluminum alloy of the above components is melted and poured, and the casting is heat treated.

[0021] as attached figure 1 As shown, a heat treatment method for cast aluminum alloy disclosed in the present invention comprises the following steps:

[0022] The first step is to heat-preserve the casting at 190°C for 1 hour;

[0023] In the second step, the casting is subjected to heat preservation treatment at 525°C, and the heat preservation time is 15h;

[0024] The third ste...

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Abstract

The invention provides a heat treatment method for a cast aluminium alloy. The heat treatment method is characterized in that the cast aluminium alloy is subjected to low-temperature short-time agingtreatment at first, then subjected to two-step solution treatment and room-temperature quenching, and finally subjected to two-step aging treatment. The heat treatment method provided by the inventionhas the following beneficial effects: with the adoption of the heat treatment method provided by the invention, the casting produced from the alloy is high in mechanical property, and the productioncost is greatly lowered.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a heat treatment method for metal materials, in particular to a heat treatment process for cast aluminum alloys. Background technique [0002] Cast aluminum alloy has the advantages of low density, high strength, simple production process and low cost. At present, it has been widely used in national industry. The application fields cover aviation, aerospace, electronics, ships, weapons, high-speed rail and other fields. However, with the continuous progress of modern industry, various industries have higher and higher performance requirements for cast aluminum alloys. At present, the improvement of the strength of cast aluminum alloys mostly depends on the addition of new and efficient alloying elements or some complex casting processes, which increases the economic cost to a certain extent. Therefore, it is necessary to develop a heat treatment process that can further improve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/12C22F1/057
CPCC22C21/12C22F1/057
Inventor 周广顺
Owner 北京世联信诺科技有限公司
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