Device and method for forming workpiece by utilizing electrified explosive shock waves of metal foil

Abstract

The invention provides a device and a method for forming a workpiece by utilizing electrified explosive shock waves of a metal foil. The method comprises the following steps: connecting the metal foil with a pulse power supply system to form a closed loop; putting metal foil is in a liquid environment; enabling the liquid in the liquid environment to be subjected to oxidation-reduction reaction with the metal foil; arranging a metal workpiece to be processed on the metal foil; enabling the metal workpiece to be machined to be partially located in the liquid environment, insulating the metal workpiece to be machined and the metal foil, thereby guaranteeing that liquid does not conduct electricity between the metal foil and the metal workpiece to be machined; introducing pulse current into the metal foil through the pulse power supply system, enabling the metal foil to explode under the action of the pulse current to generate violent shock waves, and enabling the metal foil and liquid in the liquid environment to be subjected to an oxidation-reduction reaction in the explosion process to release a large amount of energy; and under the action of the shock waves and the energy, enabling the metal workpiece to be machined to generate mechanical response to be machined and formed. The energy utilization rate in the explosive forming process of the metal foil is increased.

Description

technical field [0001] The invention belongs to the field of metal material processing, and more specifically relates to a device and method for forming workpieces by using metal foil electrified explosion shock waves. Background technique [0002] The wide use of light alloy materials provides an effective way to achieve lightweight industrial production. Among its many processing techniques, the forming and welding of light alloy materials have very important applications in the fields of aerospace and automobile manufacturing. However, conventional processes cannot meet its high-performance forming and welding manufacturing requirements: (1) In terms of forming, commonly used lightweight alloy materials (such as aluminum alloys, titanium alloys, etc.) have poor formability at room temperature and are prone to excessive thinning , Significant springback and other defects; (2) In terms of welding, especially in the welding of dissimilar metals, due to the significant differ...

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Problems solved by technology

[0008] Aiming at the defects of the prior art, the purpose of the present invention is to provide a device and method for forming workpieces by using metal foil electrified explosion shock waves, aiming to solve the problems of poor repeatability, low energy utilization rate and processing range of existing metal foil electric explosion processing. Limited, high requirements on power system and circuit parameters

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