Aluminum alloy panel for aviation and production method of aluminum alloy panel

A technology of an aluminum alloy sheet and a production method, which is applied in the field of aluminum alloy sheet production, can solve problems such as uneven performance of domestic sheets, and achieve the effects of increased fracture toughness, uniform comprehensive performance and high strength

Active Publication Date: 2017-05-31
SHANDONG NANSHAN ALUMINUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, 7150-T7751 alloy plates with a length of more than 20m are required to manufacture the wing panels of large transport aircraft and passenger aircraft, but the performance of domestic plates is not uniform

Method used

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  • Aluminum alloy panel for aviation and production method of aluminum alloy panel
  • Aluminum alloy panel for aviation and production method of aluminum alloy panel
  • Aluminum alloy panel for aviation and production method of aluminum alloy panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] This embodiment provides a method for producing an aluminum alloy plate for aviation, which includes the following steps:

[0062] Melting: raw materials are prepared according to the chemical composition and mass percentage of the 7150 aluminum alloy standard, wherein the aluminum alloy raw material includes 25% of solid aluminum material, 40% of waste aluminum material, and 35% of electrolyte solution in terms of mass percentage. The aluminum alloy raw material is smelted under the condition of 720°C, and when 50% of the aluminum alloy raw material is melted into molten aluminum, the electromagnetic stirring is turned on, Zn ingot is added, and added by infiltration. After all the aluminum alloy raw materials are melted, other ingredients are added, and the slag is removed and the ingredients are adjusted.

[0063] Casting: pour the melt into an aluminum alloy ingot (480×1560×8650mm).

[0064] Two-stage homogenization treatment: Heat the aluminum alloy ingot to 460°C...

Embodiment 2

[0070] This embodiment provides a method for producing an aluminum alloy plate for aviation, which includes the following steps:

[0071] Melting: raw materials are prepared according to the chemical composition and mass percentage of the 7150 aluminum alloy standard, wherein the aluminum alloy raw material includes 35% of solid aluminum material, 50% of waste aluminum material, and 15% of electrolyte solution in terms of mass percentage. The aluminum alloy raw material is smelted under the condition of 760°C. When 60% of the aluminum alloy raw material is melted into molten aluminum, the electromagnetic stirring is turned on, Zn ingot is added, and added by infiltration. After all the aluminum alloy raw materials are melted, other ingredients are added, and the slag is removed and the ingredients are adjusted.

[0072] Casting: pour the melt into an aluminum alloy ingot (480×1560×8650mm).

[0073] Two-stage homogenization treatment: Heat the aluminum alloy ingot to 470°C at ...

Embodiment 3

[0080] This embodiment provides a method for producing an aluminum alloy plate for aviation, which includes the following steps:

[0081] Melting: raw materials are prepared according to the chemical composition and mass percentage of the 7150 aluminum alloy standard, wherein the aluminum alloy raw materials include: 30% solid aluminum material, 45% scrap aluminum material, and 25% electrolyte. The aluminum alloy raw material is smelted under the condition of 740°C. When 55% of the aluminum alloy raw material is melted into molten aluminum, the electromagnetic stirring is turned on, Zn ingot is added, and added by infiltration. After all the aluminum alloy raw materials are melted, other ingredients are added, and the slag is removed and the ingredients are adjusted.

[0082] Multi-stage purification treatment: the melt is transferred to the holding furnace, and the furnace side Ar and Cl 2The mixed gas is refined, and the melt is degassed through the SNIF degassing equipment...

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PUM

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Abstract

The invention provides an aluminum alloy panel for aviation and a production method of the aluminum alloy panel, relating to the production field of aluminum alloy panels. The production method comprises the steps of carrying out smelting, casting, dual-stage homogenization treatment, hot roll treatment and dual-stage solution treatment on aluminum alloy raw materials, and stretching, wherein the dual-stage homogenization treatment comprises the steps of heating an aluminum alloy cast ingot to 460-470 DEG C in a temperature increase rate of 10 DEG C / h-40 DEG C / h, maintaining the temperature for 20-25 hours, continuing to heat to 475-480 DEG C, maintaining the temperature for 6-8 hours and carrying out air cooling, and the aluminum alloy raw materials include the following raw materials in percentage by mass: 25%-35% of solid aluminum, 40%-50% of waste aluminum and 15%-35% of electrolyte. By virtue of the production method, the comprehensive performance of the produced aluminum alloy panel for the aviation is beneficially improved and is relatively uniform, and the strength is relatively high. Besides, the aluminum alloy panel produced by virtue of the production method is high in strength and durability, strong in damage tolerance and good in comprehensive performance.

Description

technical field [0001] The invention relates to the field of production of aluminum alloy plates, in particular to an aluminum alloy plate for aviation and a production method thereof. Background technique [0002] 7150 aluminum alloy has good comprehensive properties and is suitable for producing large-scale thick plates and forgings. With the increasing size of aircraft and the integration of structural parts, materials with small anisotropy and high performance uniformity are becoming more and more demanding. At present, 7150-T7751 alloy plates with a length of more than 20m are required to manufacture wing panels of large transport aircraft and passenger aircraft, but the performance of domestic plates is not uniform. The main structural parts of large aircraft still need to be imported. Contents of the invention [0003] The object of the present invention is to provide a method for producing aluminum alloy plates for aviation, through the improvement of the process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/053C22C1/03C22C1/06
CPCC22C1/026C22C1/03C22C1/06C22F1/053
Inventor 程仁策吕正风张华孟凡林孙学明罗杰陶志民黄同瑊于芳徐崇义张帆张启东王博赵俊凤
Owner SHANDONG NANSHAN ALUMINUM
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