Nanopowder Preparation Device by Confined Electroexplosion Method of Ablation Material Tube

Abstract

Nanopowder preparation device by ablation material tube-constrained electric explosion method, the electric explosion chamber (9) is provided with an air inlet valve (18), a vacuum pump (10), the electric explosion device is installed in the electric explosion chamber (9), and the electric motor (1) Drive the reciprocating lead screw (6) to rotate to drive the lead screw nut (7) and the connecting body (12) fixed thereon to reciprocate. The slurry (19) is transported into the groove of the loading rod (14) through the feeder (5) through the feeding pipe (15), and a constraint is formed between the restraining sleeve (4) and the groove of the loading rod (14) Tubes, parallel electrodes (22) are installed in the electrode holder (24), capacitor C loads high voltage to elastic electrodes (17) and parallel electrodes (22), and large current is introduced into slurry (19) to cause explosion. The device can make the electric explosion process go on continuously and improve the production efficiency. The electric explosion occurs in the confinement tube, which is beneficial to the higher temperature and higher pressure of the conductor material in the confinement tube. The electrode is easy to replace, which can ensure the purity of the powder.

Description

technical field [0001] The invention relates to the technical field of nano-powder preparation, in particular to a device for preparing nano-powder by an electric explosion method constrained by an ablation material tube. Background technique [0002] The preparation of nano-powder by electric explosion method is to apply high voltage to the conductor in a certain medium or vacuum, and generate a strong pulse current instantly. Under the action of explosive impact, high-speed sputtering, and form nano-powder after free cooling. The preparation of nano-powder by electric explosion has the advantages of high energy conversion rate, adjustable process parameters, no pollution to the environment, and wide range of applicable materials. [0003] Currently researched electric explosion method for preparing nano metal powder technology, the method of electric explosion metal wire is the most common. When producing pure metal nanopowder, it is usually electric explosion pure metal...

AI Technical Summary

Problems solved by technology

This is because when the mass of the powder conductor per unit length is too large, the energy density on the powder conductor will inevitably be reduced

Increasing the initial voltage can increase the energy density on the powder conductor, but when the voltage exceeds a certain value, the gas layer on the surface of the conductor will break down prematurely, the energy deposited on the powder conductor will be significantly reduced, and the synthesis effect of the electric explosion material is not ideal

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