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Preparation process of high-strength 7150 aluminum alloy medium plate

A preparation process and technology for aluminum alloy sheets, applied in the field of aluminum alloy manufacturing, can solve the problems of high fracture toughness and high stress corrosion resistance, affecting the scope of application, etc., to improve hardenability, improve intergranular corrosion, The effect of improving the resistance to stress corrosion

Inactive Publication Date: 2020-06-12
TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the present invention provides a preparation of high-strength 7150 aluminum alloy medium-thick plate in order to solve the problem that the existing 7-series aluminum alloy profiles cannot have both high strength, high fracture toughness and high stress corrosion resistance, which affects its application range craft

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  • Preparation process of high-strength 7150 aluminum alloy medium plate
  • Preparation process of high-strength 7150 aluminum alloy medium plate

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Embodiment Construction

[0035] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0036] The process path and process control of 7150 high-strength aluminum alloy are the difficulties in product production and performance assurance.

[0037]1. The 7150 aluminum alloy has a high degree of alloying and high purity, and it is difficult to form a large ingot, and it is easy to crack. The temperature of the metal added during the melting and casting process is improper, and the stirring during the alloying process is imp...

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Abstract

The invention belongs to the technical field of aluminum alloy manufacturing, and relates to a preparation process of a high-strength 7150 aluminum alloy medium plate. Raw material ingredients comprise: Si <= 0.50%, Fe <= 0.50%, Cu: 2.10-2.20%, Mn <= 0.01%, Mg: 2.15-2.35%, Cr <= 0.02%, Zn <= 6.65%, Ti <= 0.03%, Zr: 0.10-0.12%, single impurity <= 0.01%, total <= 0.15%, and the balance Al. The product formulation and casting process are optimized, the homogenization system is improved, initial rolling temperature is improved, high rolling-reduction rolling is adopted, the solid solution processis optimized, quenching delay time is strictly controlled, the quenching speed is improved, stretching delay time is strictly controlled, the optimal amount of stretching is selected, the aging process is improved, and finally the 7150 medium plate with excellent properties is obtained.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy manufacturing, and relates to a preparation process of a high-strength 7150 aluminum alloy plate. 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. [0003] 7150 aluminum alloy uses magnesium, zinc and copper as the main alloying elements. It can be strengthened by heat treatment. It has high strength, high rigidity, strong resistance to fatigue damage, high reliability and survivability. It is...

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Application Information

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IPC IPC(8): C22C21/10C22C1/02C22C1/06C22F1/053
CPCC22C1/026C22C1/06C22C21/10C22F1/002C22F1/053
Inventor 玄宝祖立成赵俊才葛浩龙付彦军景子毅杜凤彪
Owner TIANJIN ZHONGWANG ALUMINUM IND CO LTD
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