Seven-series aluminum alloy profile and manufacturing method thereof

A technology for aluminum alloy profiles and a manufacturing method, which are applied in the fields of 7 series aluminum alloy profiles and their manufacturing, Al-Zn-Mg-Cu aluminum alloy profiles and their manufacturing fields, can solve the problem that high strength and high ductility cannot be achieved at the same time. Application range and other issues, to achieve excellent strength and ductility, reduce production costs, and improve efficiency

Active Publication Date: 2020-04-10
CHINA ZHONGWANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides a 7-series aluminum alloy profile and its manufacturing method in order to solve the problem that the existing 7-series aluminum alloy profile cannot have both high strength and high ductility, which affects its application range

Method used

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  • Seven-series aluminum alloy profile and manufacturing method thereof

Examples

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Embodiment 1

[0037] A method for manufacturing a 7-series aluminum alloy profile, comprising the following steps:

[0038] A. Calculate the amount of each aluminum alloy raw material and prepare the aluminum alloy raw material according to the ratio. The mass percentage ratio of each element of the 7-series aluminum alloy raw material is as follows:

[0039] element Si Fe Cu mn Mg Cr Zn Zr Ti Impurities Al content 0.5 0.5 2.0 0.3 4.0 0.3 8.0 0.2 0.03 0.05 margin

[0040] Add the prepared aluminum alloy raw materials into the melting furnace and mix them evenly to melt them into liquid aluminum alloys, then melt and cast the liquid aluminum alloys into aluminum alloy ingots. The semi-continuous casting method of filtering and casting, the diameter of the aluminum alloy ingot is 400mm;

[0041] B. The aluminum alloy ingot obtained in step A is subjected to solution treatment, the temperature of solution treatment is 450° C., and the solution ...

Embodiment 2

[0046] The difference between Example 2 and Example 1 is that the mass percentage ratio of each element of the 7-series aluminum alloy raw material in step A is as follows:

[0047] element Si Fe Cu mn Mg Cr Zn Zr Ti Impurities Al content 0.4 0.35 2.0 0.2 3.0 0.2 8.0 0.1 0.03 0.05 margin

Embodiment 3

[0049] The difference between Example 3 and Example 2 is that the temperature of the solution treatment in step B is 430° C., and the solution holding time is 6 hours.

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Abstract

The invention belongs to the technical field of production and manufacturing of aluminum alloy, and relates to a seven-series aluminum alloy profile and a manufacturing method thereof. The seven-series aluminum alloy profile is prepared from the following components in percentage by weight, equal to or less than 0.5% of Si, equal to or less than 0.5% of Fe, 1.0-3.0% of Cu, equal to or less than 0.3% of Mn, 1.5-4.5% of Mg, equal to or less than 0.3% of Cr, 7.0-12.0% of Zn, 0.05-0.3% of Zr, 0.005-0.5% of Ti, equal to or less than 0.05% of each of other impurities, equal to or less than 0.15% oftotal impurities and the balance Al. According to the manufacturing method of the seven-series aluminum alloy profile, artificial seasoning can be directly conducted without an off-line solid solutionprocess, the performance of the product can also meet the requirements, the seven-series aluminum alloy profile which is excellent in strength and ductility can be produced, and the efficiency is improved while the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy production and manufacture, and relates to a 7-series aluminum alloy profile and a manufacturing method thereof, in particular to an Al-Zn-Mg-Cu aluminum alloy profile and a manufacturing method thereof. Background technique [0002] The specific gravity of aluminum alloys is lower than that of steel materials, and the 7-series aluminum alloys have high strength and good heat resistance, and have been widely used as structural materials for aircraft, spacecraft and vehicles. With the widespread adoption of dual-aisle aircraft, the requirements for the overall processing performance of the aircraft are getting higher and higher, and aeronautical structural parts are gradually developing in the direction of thick profiles or even ultra-thick profiles. 7 series (Al-Zn-Mg-Cu series) aluminum alloys are widely used in aerospace structural parts due to their high strength. Uniformity puts forwar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22F1/053C22C1/02
CPCC22C1/026C22C21/10C22F1/002C22F1/053
Inventor 祝哮李洪林贾占涛
Owner CHINA ZHONGWANG
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