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Multi-grain-size uniform spherical powder batch preparation device and method based on uniform metal droplet spraying

A technology of metal droplets and spherical powders, applied in metal processing equipment, transportation and packaging, additive processing, etc., can solve the problems of low productivity and achieve the effects of small vibration, uniform size, and consistent thermal history

Active Publication Date: 2017-07-07
NORTHWESTERN POLYTECHNICAL UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiency of low productivity of the existing uniform spherical metal powder preparation method, the present invention provides a batch preparation device and method for uniform spherical powder with multiple particle sizes based on uniform metal droplet spraying

Method used

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  • Multi-grain-size uniform spherical powder batch preparation device and method based on uniform metal droplet spraying

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Embodiment Construction

[0023] The following examples refer to figure 1 .

[0024] Device example:

[0025] The present invention is based on the uniform metal droplet spraying multi-particle size uniform spherical powder batch preparation device comprising a vacuum pump 1, a collection box 2, a cooling cabinet 3, an induction heating coil 4, a chamber 5, a heat shield 6, a cooling ring 7, a signal Generator 8, oxygen content detector 9, piezoelectric ceramics 10, vibrating rod 11, nozzle 12, cooler 13, powder collector 14, barrier plate 15, collection box barometer 16, argon cylinder 17, chamber pressure Table 18, crucible 19, induction heater 20, crucible pressure gauge 21, crucible thermocouple 22, temperature controller 23, chamber thermocouple 24, water content analyzer 25 and fasteners 26. The separation of the chamber 5 and the crucible 19 can continuously add metal raw materials in the crucible 19, so that the uninterrupted production of metal powder can be realized. Wherein, argon gas is ...

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Abstract

The invention discloses a multi-grain-size uniform spherical powder batch preparation device and method based on uniform metal droplet spraying. The multi-grain-size uniform spherical powder batch preparation device and method based on uniform metal droplet spraying are used for solving the technical problem that an existing uniform spherical metal powder preparation method is low in productivity. According to the technical scheme, electric signals are input into piezoelectric ceramics to generate mechanical vibration of the piezoelectric ceramics, generated mechanical vibration enables molten metal at nozzles to generate a certain speed, and accordingly a certain amount of metal fluid is sprayed out, and fluid sprayed each time forms a metal droplet. By controlling the pressure of the molten metal in the device and vibration of the piezoelectric ceramics, the droplets uniform in size and consistent in thermal history can be obtained. The flying speed of the droplets prepared through the method is low, the droplets can completely solidify within a very short flying distance, and the droplets are small in vibration and high in degree of sphericity. The multiple piezoelectric ceramics are installed on the device in the longitudinal direction and the transverse direction, and meanwhile, the multi-spraying-hole nozzles of different sizes are used for preparing a large amount of multi-grain-size uniform spherical powder at a time.

Description

technical field [0001] The invention relates to a batch preparation device for uniform spherical powder with multiple particle diameters based on uniform metal droplet injection, and also relates to a batch preparation device method for uniform spherical powder with multiple particle diameters based on uniform metal droplet injection. Background technique [0002] With the rapid development of 3D printing technology, the material industry for 3D printing has also grown rapidly in recent years. Due to its wide range of forming and the ability to process parts that are difficult to process by conventional processing methods, metal additive manufacturing technology has developed rapidly in military and other fields in recent years. The equal-diameter spherical high-quality metal powder is the basic raw material for molding, and the quality of the metal powder for molding has a great influence on the dimensional accuracy and mechanical properties of the molded part. Uniform met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/115B22F1/00B33Y70/00
CPCB22F3/115B33Y70/00B22F1/065
Inventor 齐乐华李晨晨罗俊张代聪伊浩杨方
Owner NORTHWESTERN POLYTECHNICAL UNIV
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