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A manufacturing method of high-strength, high-toughness, and large-size aluminum alloy sheet for large passenger aircraft

A high-strength and high-toughness aluminum alloy sheet technology, which is applied in the field of manufacturing high-strength, high-toughness, large-size aluminum alloy sheets for large passenger aircraft, can solve the problems of small size, poor matching of strength and toughness, etc. smooth effect

Active Publication Date: 2021-12-14
NORTHEAST LIGHT ALLOY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of small specifications and poor matching of strength and toughness in the existing high-strength, high-toughness and large-size aluminum alloy plates for large passenger aircraft, and to provide a manufacturing method for high-strength, high-toughness and large-size aluminum alloy plates for large passenger planes

Method used

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  • A manufacturing method of high-strength, high-toughness, and large-size aluminum alloy sheet for large passenger aircraft
  • A manufacturing method of high-strength, high-toughness, and large-size aluminum alloy sheet for large passenger aircraft
  • A manufacturing method of high-strength, high-toughness, and large-size aluminum alloy sheet for large passenger aircraft

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specific Embodiment approach 1

[0021] Specific Embodiment 1: In this embodiment, a method for manufacturing a high-strength, high-toughness and large-size aluminum alloy sheet for a large passenger aircraft is realized according to the following steps:

[0022] 1. Ingredients: Weigh cathode copper, Aluminum-manganese master alloy, magnesium ingot, aluminum-titanium master alloy and aluminum ingot;

[0023] 2. Preparation of aluminum alloy melt: Add the aluminum ingot weighed in step 1 into the melting furnace, and then add aluminum-manganese master alloy and aluminum-titanium master alloy. When the charge softens and collapses, cover the flux; When the cathode copper is used, add cathode copper; after adding cathode copper, the charge is completely melted, and when the melt temperature is 720°C-730°C, perform the first slag removal, and then when the melt temperature is 710°C-730°C, add Magnesium ingots, magnesium ingots are submerged in the melt, covered with flux, and then fully stirred. After stirring, ...

specific Embodiment approach 2

[0034] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, 4.1% to 4.4% of Cu, 0.5% to 0.6% of Mn, 1.25% to 1.5% of Mg, 0.02% to 0.04% Ti and the balance of Al weigh cathode copper, aluminum-manganese master alloy, magnesium ingot, aluminum-titanium master alloy and aluminum ingot. Others are the same as the first embodiment.

specific Embodiment approach 3

[0035] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in step one, 4.25% by weight of Cu, 0.55% of Mn, 1.4% of Mg, 0.02% of Ti and the balance of Al weigh Take cathode copper, aluminum-manganese master alloy, magnesium ingot, aluminum-titanium master alloy and aluminum ingot. Others are the same as those in Embodiment 1 or 2.

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Abstract

A method for manufacturing a high-strength, high-toughness and large-size aluminum alloy sheet for a large passenger aircraft. The invention relates to a method for manufacturing a high-strength, high-toughness, and large-size aluminum alloy sheet for a large passenger aircraft. The purpose of the present invention is to solve the problems that the existing high-strength, high-toughness and large-scale aluminum alloy plates for large passenger aircraft have small specifications and poor matching of strength and toughness. Aluminum-titanium master alloy and aluminum ingot, then prepare aluminum alloy melt, then semi-continuous casting, homogenization annealing, heating, rolling, solid solution, cold working, stretching, aging, and then complete: the present invention produces a flat surface High-strength, high-toughness and large-size aluminum alloy sheet products for large passenger aircraft, which are uniform in thickness, large in size, and well matched in strength and toughness, can fully meet the needs of users. The invention is applied to the field of manufacturing large-scale aluminum alloy plates.

Description

technical field [0001] The invention relates to a method for manufacturing high-strength, high-toughness and large-size aluminum alloy plates for large passenger aircraft. Background technique [0002] The design goal of a large passenger aircraft is long life, that is, to meet 90,000 flight hours and a life span of 30 calendar years, which requires that the selected key structural materials of large passenger aircraft have a high durability damage tolerance. The lower panel structure of the outer wing of a large passenger aircraft is an important load-bearing part, requiring materials not only to have high strength, but also to have high fracture toughness and fatigue strength. [0003] At present, the specifications of this type of plate produced under industrial conditions are small, which cannot reach the 25.4mm×1250mm×13000mm required by users; the matching of strength and toughness is poor, and it cannot meet the longitudinal yield strength above 469MPa, the longitudin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/057C22C1/02C22C1/03C22C1/06C22C21/16
CPCC22F1/057C22C21/16C22C1/026C22C1/03C22C1/06
Inventor 付金来吕新宇徐涛丛福官王志超任伟才王海彬佟有志吴沂哲于莉莉闫洪达赵扬臧家吉
Owner NORTHEAST LIGHT ALLOY CO LTD
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