A metal atomization and electric field separation device and method

Abstract

The invention relates to a metal atomizing and electric field sorting device and method and belongs to the technical field of metal powder preparation. In the device, a metal smelting furnace is connected with a tundish above an atomizing tank through an infusion pipe, the tundish is internally provided with a charge supply bar connected with a charge feeder, a weighing device is installed below the tundish, and the weighing device is connected with the atomizing tank through a base; a flow guiding pipe is installed on the bottom of the tundish, and an atomizer is installed under a stem bar in the atomizing tank; a horizontal metal plate electrode connected with a direct-current voltage source is installed over the atomizer, circular metal plate electrodes connected with the direct-current voltage source are installed on the outer side of the atomizer and the inner side of the atomizing tank, and the lower portion of the atomizing tank is connected with an annular powder classification collector; and discharging openings of different collecting zones of the annular powder classification collector are connected with a transition material storage tank and a powder collecting cylinder which are below the annular powder classification collector through pneumatic butterfly valves. According to the metal atomizing and electric field sorting device and method, metal atomizing and electric field sorting device is organically combined and can prepare metal powder which is high in preparation difficulty and high in quality grade requirement for a long time.

Description

technical field [0001] The invention relates to a metal atomization and electric field separation device and method, which is a technology integrating centrifugal atomization or ultrasonic atomization pulverization and electric field separation process. The device and method can be applied to the preparation of medium and low temperature metal powders. The invention belongs to the technical field of metal powder preparation. Background technique [0002] At present, with the development of various high-tech products towards integration, miniaturization, and personalization, at the same time, with the development of processing and manufacturing technology, such as 3D printing technology in biomedical, automobile manufacturing, aerospace, mechanical processing, and daily life Application in daily necessities; the application of electronic patch printing technology makes the interconnection and packaging of integrated circuits change from traditional wire welding to patch print...

AI Technical Summary

Problems solved by technology

Chinese patent CN200410079654 proposes a non-integrated preparation technology of centrifugal atomization and powder classification, and the preparation time is limited and cannot be continuously atomized for a long time, which has an adverse effect on powder quality control; Chinese patent CN200410021160 proposes a preparation method using centrifugal atomization A device for solder powder with low oxygen content, however, the powder classification of this preparation method achieves different particle size classification methods by controlling the speed of the centrifugal atomization motor and changing the density of the atomization environment medium. This method is difficult to control and has a large particle size classification accuracy. Not enough, at the same time it is difficult to control the content of ultrafine powder, and it is not conducive to obtaining better powder morphology

The powder classification technology involved in Chinese patents CN201210212549 and CN201010623153 all use the method of installing different mesh screens on the sieve machine to obtain the required particle size. In this mechanical screening method, the screen is easy to block, and the screening effect will gradually block with the mesh. Therefore, the sieving particle size is unstable, and when sieving ultra-fine powder or powder with low density, there will be a large amount of floating powder, and the poor particle size control of this product cannot meet the requirements.

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