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Aluminum alloy profile for aviation and production technology thereof

An aluminum alloy profile and production process technology, applied in the field of aviation aluminum alloy profile and its production process, can solve problems such as large energy consumption, and achieve the effects of reducing energy consumption, high mechanical properties, fine and uniform grains

Inactive Publication Date: 2018-02-09
CHINA ZHONGWANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, in order to solve the problem that the artificial aging process of 7xxx series aluminum alloy profiles needs to consume a lot of energy, the present invention provides an aluminum alloy profile for aviation and its production process

Method used

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  • Aluminum alloy profile for aviation and production technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A production process of an aluminum alloy profile for aviation, comprising the steps of:

[0028] A. Calculate the amount of each aluminum alloy raw material and prepare the aluminum alloy raw material according to the ratio. The ratio of the mass percentage of each element in the aluminum alloy profile raw material for aviation is as follows:

[0029] element

Si

Fe

mn

Zn

Mg

Cu

Zr

Ti

Sr

Al

content

0.25

0.40

0.25

5.0

15.0

8.0

1.0

1.0

0.01

margin

[0030] 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. Semi-continuous casting method of filtering and casting;

[0031] B. The aluminum alloy ingot obtained in step A is subjected to homogenization treatment, the temperature of the homogenization treatment is 500°C, and the holding t...

Embodiment 2

[0037] The difference between embodiment 2 and embodiment 1 is that in step A, the mass percentage ratio of each element in the aluminum alloy profile raw material for aviation is as follows:

[0038] element

Embodiment 3

[0040] The difference between embodiment 3 and embodiment 1 is that in step A, the mass percentage ratio of each element in the raw material of aluminum alloy profile for aviation is as follows:

[0041] element

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Abstract

The invention belongs to the field of aluminum alloy profile production, and relates to an aluminum alloy profile for aviation and a production technology thereof. The aluminum alloy profile includes,by mass, no more than 0.25% of Si, no more than 0.4% of Fe, no more than 0.25% of Mn, 5-20% of Zn, no more than 15% of Mg, no more than 8% of Cu, no more than 1% of Zr, no more than 1% of Ti, 0.01-1.0% of Sr and the balance Al. By adding a proper amount of rare earth element Sc into a composition of 7xxx series aluminum alloy, the prepared aluminum alloy profile can be fine and uniform in grain and have good thermal processing formability, and a recrystallization phenomenon does not exist in the process of hot extrusion and solid solution aging heat treatment, so that grain refining, segregation reduction and more uniform texture of the prepared aluminum alloy profile are achieved.

Description

technical field [0001] The invention belongs to the field of aluminum alloy profile production, and relates to an aluminum alloy profile for aviation and a production process thereof. Background technique [0002] The 7-series aluminum alloys with a total zinc and magnesium content between 5.0% and 6.5% and basically no Cu are usually called medium-strength weldable 7-series aluminum alloys in the field of aluminum processing, also known as 7xxx series aluminum alloys. Natural strengthening ability and medium strength, its tensile strength is between 294.0-441.0MPa, and the softening caused by the welding process can recover by itself after sufficient natural aging. It is suitable for the manufacture of welded components that are inconvenient to be heat treated after welding. The main lightweight welded structural materials for equipment, aerospace vehicles, military ships and civilian ships. [0003] The origin of the medium-strength weldable 7-series aluminum alloy can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/02C22F1/047
CPCC22C21/08C22C1/026C22F1/047
Inventor 荣伟宋超庞俊铭王浩于鹏
Owner CHINA ZHONGWANG
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