Preparation device and preparation method of metal powder

Abstract

The invention relates to a preparation device and a preparation method of metal powder. The preparation device comprises an atomization tank, a liquid guide pipe, an ultrasonic atomizer, an energy device of the ultrasonic atomizer, a rotary liquid distributor and a power device of the rotary liquid distributor, wherein the liquid guide pipe, the ultrasonic atomizer, the energy device of the ultrasonic atomizer, the rotary liquid distributor and the power device of the rotary liquid distributor are positioned in the atomization tank, the liquid guide pipe and the rotary liquid distributor are coaxially arranged, so that metal melt is conveyed to the rotary liquid distributor through the liquid guide pipe, the rotary liquid distributor and the ultrasonic atomizer are coaxially arranged and are close to each other, so that the metal melt is centrifugally dispersed to the surface of the ultrasonic atomizer through the rotary liquid distributor to form a metal film. The preparation method of the metal powder specifically relates to a preparation process through the device. According to the preparation device and the preparation method of the metal powder, the melt can be rapidly and uniformly distributed through centrifugal atomization, the metal powder of a high degree of sphericity and micro surface roundness is prepared by combining the ultrasonic atomization technology, the problems that the centrifugal atomizing on special-shaped powder is poor in powder surface, and the ultrasonic atomization preparation is low in efficiency and low in productivity are solved, and the purpose of preparing the spherical metal powder by ultrasonic and centrifugal composite atomization is achieved.

Description

technical field [0001] The invention relates to the technical field of metal powder preparation, in particular to a metal powder preparation device and a preparation method. Background technique [0002] As an important industrial material, metal powder is increasingly used in power electronics, Internet of Things, artificial intelligence, aerospace and other fields. With the development of technologies such as thermal spraying, additive manufacturing, lightweight equipment, and electronic surface mount, the performance of particle size distribution, microscopic morphology, and stability of metal powder materials is getting higher and higher, and because metal powder Parameters such as surface roundness and sphericity determine the stability of metal powder during screening, transportation, and use. Therefore, these factors promote the development of metal powder preparation technology in the direction of high sphericity, high stability, and high quality. [0003] At presen...

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Problems solved by technology

[0005] Chinese patent application CN 201710564998.1 discloses an atomization chamber, a device for preparing metal powder and its use method, Chinese patent application CN201711240113.9 discloses a large-amplitude ultrasonic spherical metal powder preparation device and method, and Chinese patent application CN 01140401.9 discloses Ultrasonic atomization preparation method and device of spherical metal powder. These three patents are all through the flow of molten metal to the umbrella-shaped ultrasonic energy-concentrating ring, using ultrasonic cavitation to atomize into powder, which is subjected to the energy concentrator. Limited by liquid film thickness and ultrasonic power, the powder output rate is low when the atomization flow rate is below 45um

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