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Preparation method of aluminum alloy complex component product with bidirectional curvature

An aluminum alloy and curvature technology, which is applied in the field of aerospace propellant storage tanks, can solve the problems of insufficient success rate and long heat preservation time of formed aluminum alloy components, and achieve the goals of improving mechanical properties, reducing heat preservation time, and improving forming efficiency Effect

Active Publication Date: 2020-11-17
BEIJING INST OF ASTRONAUTICAL SYST ENG
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Problems solved by technology

[0004] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to provide a preparation method of aluminum alloy complex component products with bidirectional curvature, to solve the problem that the heat preservation time of the formed aluminum alloy component products in the prior art is too long, Defects that the success rate of formed aluminum alloy component products is not high enough

Method used

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  • Preparation method of aluminum alloy complex component product with bidirectional curvature
  • Preparation method of aluminum alloy complex component product with bidirectional curvature
  • Preparation method of aluminum alloy complex component product with bidirectional curvature

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preparation example Construction

[0033] Such as figure 1 Shown, the preparation method of the aluminum alloy component product of a kind of bidirectional curvature of the present invention, comprises the following steps:

[0034] Step A: Perform solution treatment on the aluminum alloy plate in an electric furnace, the temperature of the solution treatment is 480-560°C, the time of the solution treatment is 20-80 minutes, and then spray and quench with water; the aluminum alloy plate is 2219 aluminum alloy plate;

[0035] Step B, using a cold forming step combining drawing and rolling to pre-deform the bent aluminum alloy plate after solution quenching with a deformation amount of 8-10%;

[0036] Step B makes the aluminum alloy plate that has become somewhat curved after solution quenching return to flatness. The purpose of pre-deformation of the aluminum alloy sheet in this step is to smooth the deformed aluminum alloy sheet after solution quenching and reduce residual stress, and the other is to facilitat...

Embodiment 1

[0051] The method of the invention is used to prepare aluminum alloy component products with two-way curvature.

[0052] The 2219 aluminum alloy plate is subjected to solution treatment in an electric heating furnace. The temperature of the solution treatment is 535 ° C, the solution is 45 minutes, and then water is sprayed and quenched; the deformation of the aluminum alloy plate after solution quenching is 8% Deformation; place the aluminum alloy plate in an aging furnace for artificial aging, and treat it at 175°C for 8 hours; perform single-curvature preforming on the aluminum alloy plate, and the time for single-curvature preforming is about 20 minutes; The final aluminum alloy curved plate is subjected to double-curvature vacuum creep aging forming. The temperature in the autoclave is raised to 180°C and the pressure is increased to 0.6MPa, and the heat preservation and pressure are kept for about 3 hours. After cooling down, the formed aluminum alloy is obtained. alloy ...

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Abstract

The invention discloses a preparation method of an aluminum alloy complex component product with bidirectional curvature. The preparation method comprises the following steps that A, an aluminum alloyflat plate is subjected to solid solution quenching; B, the aluminum alloy plate bent after solid solution quenching is subjected to pre-deformation; C, the pre-deformed aluminum alloy flat plate issubjected to artificial aging treatment in an aging furnace; D, single-curvature preforming is conducted on the aluminum alloy flat plate obtained after artificial aging treatment; E, the aluminum alloy bent plate obtained in the step D is placed on a mold to be subjected to double-curvature vacuum creep age forming, and the aluminum alloy component product with the bidirectional curvature is prepared. The defects that in the prior art, the heat preservation time of creep age forming of formed aluminum alloy component products is too long, and the success rate of the formed aluminum alloy component products is not high enough are overcome.

Description

technical field [0001] The invention relates to a method for forming double-curvature melon petals at the bottom of a carrier rocket body structure storage tank, in particular to a method for preparing a bidirectionally curved aluminum alloy complex component product, which belongs to the technical field of aerospace propellant storage tanks. Background technique [0002] The propellant tank is an important part of the rocket body structure. It stores and transports propellant for the power system. At the same time, it participates in the force transmission of the rocket body as the main force transmission structure. The load environment is complex and the requirements for light weight are high. The melon petal component is an important part of the bottom of the launch vehicle tank. Generally, it is manufactured by drawing and deep drawing. However, because it is formed at room temperature, it will have large springback, low forming accuracy, and uneven performance distributi...

Claims

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Application Information

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IPC IPC(8): B21D11/22B21D11/06C22F1/04
CPCB21D11/22B21D11/06C22F1/04
Inventor 胡正根刘观日容易荆木春张智王非凡董曼红刘德博阮小鹏王鹏李斌杨楠朱文俐刘力源张健王晓博郭彦明马云龙
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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