Electromagnetic pulse forming device and method for sheet metal

Abstract

The invention discloses an electromagnetic pulse forming device and method for a metal sheet. The electromagnetic pulse forming method includes the steps that S1, when the metal sheet to be formed is arranged between a forming die and a forming coil, pressure equipment is used for applying pressure through a blank holder, and accordingly a metal sheet flange area can be prevented from being wrinkled; S2, a first power module is used for supplying a current to the forming coil, and the powered-on forming coil generates a pulsed magnet field at a metal sheet area; a second power module is used for supplying a current to the metal sheet, so that a pulse current is generated in the metal sheet; and the pulse current and the pulsed magnet field act with each other to generate electromagnetic force used for driving the metal sheet to be subjected to high-speed deformation; and S3, the metal sheet to be formed can be deformed through the electromagnetic force. According to the electromagnetic pulse forming device and method, in the mode of directly loading the currents, the current magnitude in the metal sheet can be increased obviously, the influence on the current magnitude by electrical resistivity is small, and the problem of being insufficient in forming force due to the fact that the induced eddy current of a low electric conductivity material is small can be effectively solved.

Description

technical field [0001] The invention belongs to the field of plastic forming of metal materials, and more specifically relates to an electromagnetic pulse forming device and method for metal plates. Background technique [0002] Lightweight is an important technical means to improve the ultimate carrying capacity of carrier devices and realize energy saving and emission reduction in aerospace, automobile and other fields. High-performance aluminum alloys, titanium alloys, and magnesium alloys have become the materials of choice for modern aerospace equipment to increase the limit of structural load-bearing capacity. [0003] However, under the existing quasi-static forming process, the above-mentioned light alloys have poor plastic formability and are prone to springback and cracking, which directly affect the quality of formed parts. Electromagnetic pulse forming technology is a high-energy, high-speed special processing method that uses pulsed electromagnetic force to pla...

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Problems solved by technology

[0008] Aiming at the defects of the prior art, the object of the present invention is to provide an electromagnetic pulse forming device and method for sheet metal, aiming to solve the problem of insufficient forming force due to the low induced eddy current in the prior art

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