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Device and method for batch preparation of multi-size uniform spherical powder based on uniform metal droplet spraying

A metal droplet, spherical powder technology, applied in metal processing equipment, transportation and packaging, additive processing, etc., can solve problems such as low productivity, achieve the effects of small oscillation, low flight speed, and consistent thermal history

Active Publication Date: 2019-02-19
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • 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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  • Device and method for batch preparation of multi-size uniform spherical powder 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 batch preparation device and method for uniform spherical powder with multi-particle diameters based on uniform metal droplet spraying, which is used to solve the technical problem of low productivity in the existing uniform spherical metal powder preparation method. The technical solution is to generate mechanical vibration by inputting an electrical signal to the piezoelectric ceramic, and the generated mechanical vibration causes the molten metal at the nozzle to generate a certain speed, so that a certain amount of metal fluid is ejected, and each ejected fluid forms a A drop of metal. By controlling the pressure of molten metal in the device and the vibration of piezoelectric ceramics, droplets with uniform size and consistent thermal history can be obtained. The liquid droplet prepared by the method has a low flying speed, can be completely solidified in a very short distance, has small vibration of the liquid droplet, and has high sphericity. Multiple piezoelectric ceramics are installed in the vertical and horizontal directions of the device, and multi-nozzle nozzles of different sizes can be used to prepare a large number of uniform spherical metal powders with multiple particle sizes at one 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 Patents(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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