Plate electromagnetic bulging method and device based on layered magnetic field converter

By introducing a layered magnetic field converter during the electromagnetic forming process, adjusting the induced current distribution on the plate, the problem of insufficient electromagnetic forming uniformity of light alloys is solved, and more efficient electromagnetic force distribution and energy utilization are achieved. It is suitable for multiple Processing scenarios.

CN119187334AActive Publication Date: 2024-12-27CHINA THREE GORGES UNIV
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Patent Information

Application Number
CN202411542088.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-31
Publication Date
2024-12-27
Estimated Expiration
2044-10-31

AI Technical Summary

Technical Problem

In the prior art, the electromagnetic forming uniformity of light alloys is insufficient, the double coil structure is complex, the energy utilization rate is low, and the scope of application of the conductor ring method is limited, so it cannot be applied to various processing scenarios.

Method used

The plate electromagnetic expansion method based on a layered magnetic field converter is adopted. By introducing a layered magnetic collector between the driving coil and the forming plate, the plate is adjusted by using the electrical connection between the end-face conductor layer, the intermediate insulating layer and the bottom-face conductor layer. The induced current distribution on the surface improves the electromagnetic force distribution characteristics and achieves uniform deformation of the plate.

Benefits of technology

It improves the flatness and power utilization rate of the middle swelling area of ​​the plate, reduces the power loss, simplifies the processing process of multi-specified plates, extends the service life of the drive coil, and is suitable for production of different forming specifications.

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Abstract

The invention relates to a plate electromagnetic bulging method based on a layered magnetic field converter, the cross section of the layered magnetic field converter is trapezoidal, and the layered magnetic field converter comprises an end surface conductor layer, a middle insulating layer and a bottom surface conductor layer; the layered magnetic field converter is provided with a through breaking joint, and the end surface conductor layer and the bottom surface conductor layer are electrically connected at the breaking joint; the layered magnetic field converter is arranged between the driving coil and a to-be-formed plate, the end face conductor layer is tightly attached to an end bulging area of the plate, and when the driving coil is powered on, axial electromagnetic force is generated under a superimposed magnetic field of current of the driving coil and induced current of the layered magnetic field converter; the axial electromagnetic force borne by the end bulging area of the plate is larger than the axial electromagnetic force borne by the middle bulging area, the induction magnetic flux of the middle bulging area of the plate is evenly distributed, and the flatness of the middle bulging area of the plate is improved. The electromagnetic force distribution characteristic on the bulging plate is improved, uniform deformation of the plate can be achieved, and the bulging effect of the plate is improved.
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Citation Information

Patent Citations

  • Electromagnetic plate forming method based on conductor circular ring

    CN116833297A

  • Hierarchically-controlled electromagnetic incremental forming method

    CN105127284A

  • Electromagnetic pulse hole-flanging and forming device for thick plate or thick arc-shaped piece

    CN110681760A

  • Circular ring electromagnetic bulging analysis and control method and bulging device

    CN112387843A

  • Electromagnetic forming device and forming method

    CN115971321A