Gas atomization spraying tray capable of adjusting flow rate of metal liquid flow
A technology of metal liquid and gas atomization, which is applied in the field of powder metallurgy, can solve the problems that do not involve the new atomization spray plate, etc., and achieve the effect of improving stability, atomization efficiency and uniformity
Inactive Publication Date: 2019-04-26
SHANGHAI RES INST OF MATERIAL
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Problems solved by technology
[0004] Among the atomization spray pans that have been applied and reported so far, there is almost no new atomization spray pan that controls the flow rate of the metal liquid flow, and the control of the flow rate of the metal liquid flow during the atomization process is to achieve a stable atomization process. An important means to increase product yield
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[0027] Such as figure 1 As shown, in one embodiment of the present invention, the gas atomization spray plate that can regulate the flow rate of the metal liquid flow includes a secondary nozzle and a main nozzle;
[0028] The auxiliary nozzle includes an auxiliary nozzle sealing cover 1 and an auxiliary nozzle main body 2. In this embodiment, the auxiliary nozzle sealing cover 1 and the auxiliary nozzle main body 2 are connected by thread sealing, and the auxiliary nozzle main body 2 and the auxiliary nozzle sealing cover 1 form an auxiliary nozzle body. The nozzle air chamber 3, and the pressure range of the injection gas of the auxiliary nozzle air chamber 3 is 0.5MPa-2MPa; the first metal liquid flow channel 4 is set on the auxiliary nozzle main body 2 and several flow directions are parallel to the first metal liquid flow channel 4 In this embodiment, there are 22 sub-nozzle gas channels 5, and the 22 sub-nozzle gas channels 5 are distributed around the first metal liquid...
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A gas atomization spraying tray capable of adjusting the flow rate of a metal liquid flow comprises an auxiliary nozzle and a main nozzle, wherein a negative pressure state of an atomization area of the main nozzle is adjusted with the auxiliary nozzle, so suction pressures in the atomization area of the main nozzle can be influenced and the flow rate of the metal liquid flow can be adjusted. Thegas atomization spraying tray provided by the invention has the beneficial effects that the flow rate of the metal liquid flow can be adjusted in real time by the main and auxiliary nozzle structuresdisposed on the spraying tray during atomization; and the supersonic speed of outlet gas at the main nozzle is realized with a Laval structure, so the atomization is more stable and efficient and homogeneity of powder particle size distribution and the acquisition rate of product fine powder can be increased.
Description
technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to gas atomization preparation equipment for metal 3D printing powder. Background technique [0002] In recent years, with the continuous development of advanced manufacturing and the rise of intelligent manufacturing, metal 3D printing technology has developed into a transformative method for product design and R&D in various industrial sectors, and its products have been demonstratively used in aviation, aerospace, medical Advanced fields such as equipment. In the entire 3D printing technology development system, the research and development of metal powder consumables has played a vital role in the development of the entire system. Metal powder is used as a raw material, and the characteristics of the powder will directly affect whether the 3D printing forming process can be carried out stably and efficiently, and have a decisive impact on the shape, dimensional accura...
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Login to View More IPC IPC(8): B22F9/08B33Y40/00
CPCB22F9/082B33Y40/00B22F2009/088
Inventor 卢林朱德祥吴文恒张亮王涛吴凯琦
Owner SHANGHAI RES INST OF MATERIAL