Aluminum alloy thin-walled member and its high-efficiency hot stamping forming method and application

Abstract

The invention provides an aluminum alloy thin-walled component and its high-efficiency hot stamping forming method and application. By utilizing the characteristics of high efficiency, fast cycle time and high integration of progressive dies, rapid heating-pre-cooling and pre-deformation-cold die final The forming process steps are integrated in a set of progressive molds, and the paint treatment is carried out, that is, the aging high-strength aluminum alloy is used, and the heat is exchanged quickly by contacting with the heating flat mold. By controlling the contact pressure, the forming temperature can be reached by holding the pressure for a short time. Interval; through pre-cooling and pre-deformation to generate uniform strain cumulative dislocations, while avoiding the high-temperature softening phenomenon of aluminum alloy materials in the high-temperature deformation stage, to achieve the purpose of deformation; finally stamping in the final forming mold at room temperature to obtain the required parts and Baking paint treatment is carried out; this method greatly shortens the production cycle of aluminum alloy hot-formed parts, is suitable for fast-paced continuous industrial production mode, and has a high degree of integration of process steps, which saves equipment costs and time costs, while ensuring the mechanical properties of formed parts.

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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