A gas atomization nozzle for preparing fine spherical powder
A spherical powder, gas atomization technology, applied in the field of gas atomized metal powder, can solve the problems of low yield of fine powder, poor atomization effect, coarse and not dense matrix structure, etc., achieve high-efficiency preparation, improve atomization Efficiency, the effect of reducing production costs
Active Publication Date: 2018-08-14
JIANGXI YUEAN SUPERFINE METAL +1
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Problems solved by technology
The atomization nozzle determines the atomization efficiency and powder performance. If the design of the atomization nozzle is unreasonable, the atomization effect will be poor, the obtained powder particles will be coarser, and the yield of fine powder will be lower.
In the prior art, the design of the atomizing nozzle mostly adopts the first-stage atomization technology, which makes it difficult to achieve the homogenization and miniaturization of the broken metal melt into droplets, and the deposited matrix structure is coarse and not dense
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[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other implement...
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The invention relates to the technical field of gas atomization of metal powder and provides a gas atomization nozzle for preparing superfine spherical powder. The gas atomization nozzle is provided with a gas flow channel and a flow guiding channel and also provided with a first face and a second face which are opposite to each other, wherein the flow guiding channel is provided with an inlet formed in the first face and an outlet formed in the second face; the gas flow channel comprises a gas inlet channel, a gas cavity, a plurality of first gas outlet channels and a second gas outlet channel, the gas cavity communicates with the gas inlet channel and the second gas outlet channel, and the second gas outlet channel is provided with a second gas outlet formed in the second face and surrounding the outlet; and the plurality of first gas outlet channels communicate with the gas cavity, and each first gas outlet channel is provided with first gas outlets, which are formed in the second face and located between the second gas outlet and the outlet. According to the gas atomization nozzle for preparing superfine spherical powder, owing to the twice-atomization structural design, superfine metal powder can be prepared efficiently.
Description
technical field [0001] The invention relates to the technical field of gas-atomized metal powder, in particular to a gas-atomized nozzle for preparing fine spherical powder. Background technique [0002] The gas atomization method is the most commonly used method for preparing metal powder, and the process is completed by spray forming technology. Generally speaking, the implementation process is as follows: in the process of metal spray forming, the high-pressure gas atomizes the continuous metal liquid flow through the atomizing nozzle, and the metal liquid flow is broken into tiny droplets, and then the liquid droplets Cooling is performed to form a billet. The metal powder obtained by the gas atomization method has the characteristics of fine grain, uniform composition and excellent performance. [0003] Spray forming technology can not only overcome the defects brought by the traditional metallurgical process, but also avoid the powder making, pressing, sintering and ...
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IPC IPC(8): B22F9/08
CPCB22F9/082B22F2009/088
Inventor 邹海平李博李上奎王兵李显信吕华朱建国
Owner JIANGXI YUEAN SUPERFINE METAL