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Metal powder preparation device and method

A technology of metal powder and preparation equipment, which is applied in the field of metal powder preparation equipment and preparation, can solve the problems of metal powder satellite powder and other problems, achieve the effect of reducing the collision frequency and solving the phenomenon of satellite powder

Pending Publication Date: 2018-12-11
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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Problems solved by technology

[0005] The purpose of the present invention is to provide a metal powder preparation device and preparation method to solve the problem of satellite powder phenomenon in the metal powder prepared by the existing gas atomization process

Method used

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  • Metal powder preparation device and method
  • Metal powder preparation device and method

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Embodiment Construction

[0036] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0037] Such as figure 1 As shown, it is a schematic structural diagram of the metal powder preparation device provided by the present invention. The metal powder preparation device comprises a first chamber 1, a second chamber 2 and an atomization system arranged between the first chamber 1 and the second chamber 2, wherein:

[0038] The first chamber 1 is provided with a smelter 11 for melting metal, a tundish 12 for transferring molten metal and a draft pipe 13 for guiding the molten metal to flow out, and the outside of the smelter 11 and the tundish 12 are both The ring is provided with heating coils 14 for heating the melter 11 and the tundish 12 . Preferably, the smelter 11 is heated by medium frequency induction, and the tundish 12 is heated by resistance, so that the degree of superheat of...

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Abstract

The invention belongs to the technical field of metal powder material preparation, and discloses a metal powder preparation device and method. The metal powder preparation device comprises a first chamber, a second chamber and an atomizing system, wherein the first chamber is internally provided with a smelting device for melting metal; the atomizing system comprises a first spray nozzle and a second spray nozzle, wherein the first spray nozzle and the second spray nozzle communicate with the top of the second chamber, air sources are connected to the first spray nozzle and the second spray nozzle, and an outlet of the smelting device corresponds to the first spray nozzle. A metal melting body which outflows from the smelting device and enters the second chamber is atomized to form metal liquid drops by using gas ejected from the first spray nozzle, and metal powder is formed through heat transferring with the gas which is ejected from the first spray nozzle, after gas which is ejectedfrom the second spray nozzle enters the second chamber, an air curtain capable of restraining the metal powder cycling and rising is formed, so that the collision frequency of the metal powder and the metal liquid drops is reduced, the formation of satellite powder is reduced, and thus the problem that a satellite powder phenomenon exists in the metal powder prepared by an existing gas atomizingtechnology is solved.

Description

technical field [0001] The invention relates to the technical field of metal powder material preparation, in particular to a metal powder preparation device and a preparation method. Background technique [0002] Fine spherical metal powder is the raw material for advanced manufacturing technologies such as 3D printing and injection molding, and gas atomization is an important method for preparing fine spherical metal powder. [0003] However, the traditional gas atomization pulverization equipment and the commonly used fine spherical metal powder gas atomization preparation process generally have the problem of low fine powder yield. For example, the particle size of the metal powder used in the selective laser melting process is generally less than 53 microns. For the aluminum alloy powder prepared by supersonic gas atomization technology, the powder yield in this particle size range is generally not higher than 30%. In addition, there is satellite powder phenomenon in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08
CPCB22F9/082B22F2009/0888Y02P10/25
Inventor 黎兴刚朱强
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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