A device for decoupling electrical effects during electromagnetic forming

Abstract

The invention discloses an electric effect decoupling device in the electromagnetic forming process, which comprises a pulse discharge circuit, a magnetic field generating device, a magnet collector, an electromagnetic shielding module and a driving ring, and the pulse discharge circuit is used to provide pulse current to the magnetic field generating device; The magnetic field generating device is used to generate the driving magnetic field according to the pulse current; the magnetic collector is used to concentrate the driving magnetic field near the driving ring; the electromagnetic shielding module is used to shield the magnetic field on the workpiece in the axial direction; the driving ring is used to Shield the magnetic field on the workpiece in the direction, and use its own induced current to interact with the driving magnetic field to generate electromagnetic force to drive itself and the workpiece to deform at the same time; effectively shield the induced eddy current of the electromagnetic field on the workpiece through the electromagnetic shielding module and the driving ring , to decouple the effect of current and the high temperature effect generated by current from the workpiece, realize the decoupling of current in the electromagnetic forming process, and separate the role of current and high-speed deformation in electromagnetic forming.

Description

technical field [0001] The invention belongs to the technical field of forming, and more specifically relates to a device for decoupling electric effects in the electromagnetic forming process. Background technique [0002] Electromagnetic forming technology is a new high-speed forming method with high speed, high temperature rise and high current at room temperature. Electromagnetic forming can greatly improve the formability of aluminum alloys, magnesium alloys and other light metals that are difficult to form at room temperature. The scope of application of light metals in transportation, aerospace and other fields has accelerated the process of lightweighting in related fields. [0003] However, the electromagnetic forming technology is still in the research stage. During the electromagnetic forming process, the material is subjected to high strain rate, high temperature rise and high current at the same time, and its deformation mechanism is complicated and difficult to...

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Problems solved by technology

[0006] Aiming at the defects of the prior art, the purpose of the present invention is to provide a device for decoupling electrical effects in the electromagnetic forming process, aiming at solving the problem that the current provides a huge electromagnetic force to drive the deformation of the workpiece in the existing electromagnetic forming process. The current itself and the Joule heating effect caused by it have a great influence on the deformation behavior of the material. The effects of current, heat and high-speed deformation are coupled with each other, and the physical process is complex and variable, which makes it difficult to decouple the influence of various physical quantities on the deformation behavior of the material.

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