Electromagnetic partitioning forming and springback control in the fabrication of curved parts

Cui, Xiaohui; Du, Zhihao; Xiao, Ang; Yan, Ziqing; Qiu, Dongyang; Yu, Huimin; Chen, Baoguo

doi:10.1016/j.jmatprotec.2020.116889

Cited by 24 publications

(2 citation statements)

References 15 publications

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“…Cui et al [ 19 ] proposed electromagnetic increment forming (EMIF), which was used to form large 3003 aluminum alloy parts with a moving discharge of small coils. Cui et al [ 20 ] proposed an electromagnetic partitioning forming technology that can precisely manufacture and achieve springback control of large bending radius parts using 3003 aluminum alloy. During the process, elastic deformation is transformed into plastic deformation, and the residual stress is very small after EMF.…”

Section: Introductionmentioning

confidence: 99%

Deformation Behavior and Properties of 7075 Aluminum Alloy under Electromagnetic Hot Forming

Deng

Liu

et al. 2021

Materials

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High-strength 7075 aluminum alloy is widely used in the aerospace industry. The forming performance of 7075 aluminum alloy is poor at room temperature. Therefore, hot forming is mainly adopted. Electromagnetic forming is a high-speed forming technology that can significantly improve the forming limit of difficult-to-deform materials. However, there are few studies on electromagnetic hot forming of 7075-T6 aluminum alloy. In this study, the deformation behavior of 7075-T6 aluminum alloy in the temperature range of 25 °C to 400 °C was investigated. As the temperature increased, the sheet forming height first decreased, then increased. When the forming temperature is between 200 °C and 300 °C, η phase coarsening leads to a decrease in stress and hardness of the material. When the forming temperature is between 300 °C and 400 °C, continuous dynamic recrystallization of 7075 aluminum alloy occurs, resulting in grain refinement and an increase in stress and hardness. The results of numerical simulations and experiments all show that the forming height and deformation uniformity of the sheet metal are optimal at 400 °C, compared to 200 °C.

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Section: Introductionmentioning

confidence: 99%

Deformation Behavior and Properties of 7075 Aluminum Alloy under Electromagnetic Hot Forming

Deng

Liu

et al. 2021

Materials

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“…They used numerical simulation and experimental veri cation, nding that the wrinkling was primarily caused by the circumferential compressive stress, which was a consequence of stress wave propagation caused by electric discharge. Finally, Cui et al [16] proposed the electromagnetic partitioning forming to achieve precise manufacturing and control the springback when producing curved parts.…”

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confidence: 99%

Large ellipsoid parts manufacture using electromagnetic incremental forming with variable blankholder structure

Cui

Yan

Chen

et al. 2021

Int J Adv Manuf Technol

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The large ellipsoid parts are the main load-bearing components in the rocket tank, which are prone to wrinkle when using the traditional stamping. In order to solve the wrinkling problem in large parts, the EMIF method with a variable blank holder is proposed in this paper. The numerical simulation has shown that the sheet material near the blank holder is, as a consequence of stamping, subjected to circumferential compressive stress. When the drawing height was 100 mm, the sheet metal was notably wrinkled. In the electromagnetic forming (EMF) process, the sheet region facing the coil becomes thinner.However, the sheet metal thickness corresponding to the coil edge increases with the increase in forming height. If the EMF forming height is 150 mm, the sheet, which is in contact with the smooth mold, is deformed without a wrinkle. Compared to the traditional stamping, the EMF can signi cantly reduce the sheet metal wrinkling, improving the deformation height of the sheet metal smooth area.

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Springback and deformation uniformity of high-strength aluminum alloy sheet using electromagnetic forming

Yan

Cui

et al. 2021

Int J Adv Manuf Technol

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Electromagnetic partitioning forming and springback control in the fabrication of curved parts

Cited by 24 publications

References 15 publications

Deformation Behavior and Properties of 7075 Aluminum Alloy under Electromagnetic Hot Forming

Deformation Behavior and Properties of 7075 Aluminum Alloy under Electromagnetic Hot Forming

Large ellipsoid parts manufacture using electromagnetic incremental forming with variable blankholder structure

Springback and deformation uniformity of high-strength aluminum alloy sheet using electromagnetic forming

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