Device for preparing metal amorphous powder through ultrasonic atomization recooling method

Abstract

The invention relates to an amorphous powder ultrasonic atomization device, in particular to novel ultrasonic atomization metal amorphous powder preparing equipment integrating fusion, ultrasonic atomization, a liquid nitrogen and water secondary recooling system, vacuum drying and discharging screening and collecting. A vacuum fusion crucible is used for fusing raw materials into metal fusion liquid. The metal fusion liquid becomes atomized globular liquid drops under the effect of an ultrasonic atomizer. The metal liquid drops are quickly cooled through liquid nitrogen and cooling water to form metal particles. The metal particles are dried through a vacuum drying oven. The dried metal particles are screened and collected. The amorphous powder preparing method is suitable for metal, quasicrystals and microcrystals.

Description

technical field [0001] The present invention relates to an amorphous powder ultrasonic atomization preparation device, in particular to an ultrasonic atomization device involving melting, ultrasonic atomization, liquid nitrogen + water secondary recooling system, vacuum drying, discharge screening and collection. A new type of metal amorphous powder preparation equipment. Background technique [0002] At the beginning of the 21st century, due to the proposal of the German Industry 4.0 strategy and Made in China 2025, the manufacturing industry set off a wave of innovation and creation. Among them, the additive manufacturing technology represented by 3D printing has been highly concerned by the global scientific and technological circles, and the additive manufacturing of metals has increasingly become the development direction of the future manufacturing industry. However, with the development of manufacturing technology, corresponding problems have become increasingly prom...

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Problems solved by technology

Similarly, the glass-forming ability of amorphous powder will also be weakened in the following situations: ① The composition of the multi-element alloy deviates from the eutectic or near-eutectic composition point; ② The purity of the raw material is not high enough; ③ In the master alloy fusion or forming Impurities are introduced during the process; ④The superheat of the master alloy before forming is not properly selected

[0004] In recent years, the commonly used amorphous strip crushing method and gas atomization method have to obtain 10 5 The cooling rate of K / s is very difficult, and there are problems such as irregular powder shape, wide particle size distribution range and high oxygen content in the method of preparing powder; although the water atomization method can improve the cooling rate of preparing amorphous, but the melting The interaction between the liquid flow and the water flow makes the powder easily oxidized and irregular in shape. At the same time, when the molten metal is solidified, it meets water to form a water vapor film, which hinders the rapid cooling of the molten droplet.

[0005] At present, limited by the domestic technical level, the research and development of amorphous magnetic powder preparation equipment is progressing slowly, and there are fewer related production enterprises, but there is a huge market demand for amorphous powder. Therefore, it is urgent to develop a set of control cores. A new type of amorphous powder manufacturing equipment

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