Aluminum alloy thin-wall component as well as efficient hot stamping forming method and application thereof

Abstract

The invention provides an aluminum alloy thin-wall component as well as an efficient hot stamping forming method and application thereof. According to the aluminum alloy thin-wall component as well as the efficient hot stamping forming method and application thereof, by means of the characteristics of high efficiency, fast rhythm and high integration degree of a progressive die, the process steps of rapid heating-precooling and predeformation-final forming of a cold die are integrated into one progressive die, and paint baking treatment is carried out, namely, aging-state high-strength aluminum alloy is adopted, carries out rapid heat exchange by making contact with a heating flat plate die, and a forming temperature interval can be reached by controlling a contact pressure and maintaining the pressure for a short time; uniform accumulative dislocation of strain is generated through the precooling and predeformation, meanwhile, a high-temperature softening phenomenon of the aluminum alloy material in a high-temperature deformation stage is avoided, and the purpose of deformation is achieved; and finally, stamping is carried out in a room-temperature final forming die to obtain a required part, and the paint baking treatment is carried out. According to the method, the production cycle for an aluminum alloy hot-formed part is greatly shortened, the method is suitable for a fast-rhythm continuous industrial production mode, and high in process step integration degree, the equipment cost and the time cost are saved, and meanwhile the mechanical property of the formed part is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of sheet metal forming and processing, and in particular relates to an aluminum alloy thin-walled component and its high-efficiency hot stamping forming method and application. Background technique [0002] In response to the energy crisis and environmental crisis, the development of advanced manufacturing technology to achieve lightweight structures has become a research hotspot in the aerospace and automotive industries. In recent years, aluminum alloys with high specific strength, stiffness and good corrosion resistance have attracted the attention of the industry. However, the plasticity of aluminum alloys at room temperature is poor, and the subsequent heat treatment process efficiency of stamping parts is low. Traditional methods cannot meet the requirements of the process. Require. [0003] Utilizing the characteristics of high-temperature plasticity enhancement of aluminum alloys, parts with complex...

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Problems solved by technology

In recent years, aluminum alloys with high specific strength, stiffness and good corrosion resistance have attracted the attention of the industry. However, the plasticity of aluminum alloys at room temperature is poor, and the subsequent heat treatment process efficiency of stamping parts is low. Traditional methods cannot meet the requirements of the process. Require

[0003] Utilizing the characteristics of high-temperature plasticity enhancement of aluminum alloys, parts with complex features can be formed by using isothermal forming methods, but subsequent strengthening treatments such as solid solution-quenching-artificial aging are usually required, resulting in thermal distortion of the parts and low process efficiency.

Some scholars put forward the aluminum alloy hot stamping (HFQ) technology on the basis of the hot stamping process of boron steel. Wrinkles and other process defects can achieve the purpose of forming complex parts while ensuring strength and dimensional accuracy. However, this process is limited by the long solution time and aging time in the aluminum alloy heat treatment system, and the cycle is slow. It is not suitable for industrial continuous production.

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