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Gas atomization pulverizing device capable of reducing satellite powder

A pulverizing device and gas atomization technology, which is applied in the field of gas atomization pulverizing device, can solve the problems of low yield of fine powder, large number of powder cohesion and agglomeration satellite powder, etc., so as to avoid cohesion and agglomeration and improve the running trajectory. , the effect of reducing the temperature

Pending Publication Date: 2021-12-31
AEROSPACE HIWING HARBIN TITANIUM IND
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Problems solved by technology

[0003] The present invention aims at the common problems of low fine powder yield, powder cohesion and agglomeration and large number of satellite ball powders in the existing vacuum air atomization powder making technology, and provides an air atomization powder making device that reduces satellite powder

Method used

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  • Gas atomization pulverizing device capable of reducing satellite powder

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Embodiment 1

[0020] A gas atomization powder making device for reducing satellite powder, the device includes an atomization chamber body 5, a smelting chamber 1 is arranged above the atomization chamber body 5, and a smelting crucible 2 for melting metal is arranged in the smelting chamber 1, and the smelting crucible The first nozzle is installed below the 2, and the first nozzle communicates with the top of the atomization chamber body 5, and the outlet 3 of the smelting chamber 1 corresponds to the first nozzle; The bottom of the atomization chamber body 5 is connected to the powder collection tank 6, and the side wall of the atomization chamber body 5 is connected with a second nozzle 7, the second nozzle 7 is located above the connection between the atomization chamber body 5 and the powder collection tank 6, and the atomization The side wall of the chamber body 5 is also communicated with the cyclone classification system 9, and the bottom of the cyclone classification system 9 is co...

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Abstract

The invention provides a gas atomization pulverizing device capable of reducing satellite powder, and belongs to the technical field of metal powder preparation devices. The problems that in an existing vacuum gas atomization pulverizing technology, the yield of fine powder is low, powder adheres and agglomerates, and the number of satellite ball powder is large are solved. A second nozzle is additionally arranged at the bottom of an atomizing chamber, bottom airflow is introduced, the temperature of the atomizing chamber is reduced, and meanwhile the moving track of backflow airflow is improved. Annular auxiliary gas of an annular gas spraying device promotes atomized liquid drops to be cooled, reverse argon spraying is carried out at the bottom of an atomization cabin, cooling is accelerated, meanwhile, the collision and bonding probability between metal molten drops in the powder atomization process is reduced, powder adhesion and agglomeration are avoided, the powder fluidity is improved, and the gas atomization powder satellite powder content is reduced. The high-standard requirement of industrial production for high-quality spherical metal powder is met, and meanwhile the working efficiency of vacuum induction melting gas atomization powder manufacturing equipment of a cold-wall crucible is improved.

Description

technical field [0001] The invention relates to a gas atomization powder making device for reducing satellite powder, and belongs to the technical field of metal powder preparation devices. Background technique [0002] Cold-wall crucible vacuum induction melting gas atomization powder making technology has become the mainstream technology for preparing powder for additive manufacturing. The powder prepared by this process has many advantages such as high fine powder yield and low cost, and has been widely used. However, the existing gas atomization method is a complex process of interaction between high-temperature metal melt and high-temperature gas, and it is easy to cause adhesion between powders under the action of high-speed airflow during the atomization process, and then form satellite spheres, resulting in powder problems such as poor mobility. However, the existing gas atomization powder making device cannot realize the ideal gas flow field in the atomization cham...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08
CPCB22F9/082B22F2009/0892
Inventor 田操刘邦涛陈卓侯继伟刘振军
Owner AEROSPACE HIWING HARBIN TITANIUM IND
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