A kind of atomization preparation device of nickel aluminum powder

Abstract

The invention discloses an atomizing preparation device of nickel aluminum powder. The atomizing preparation device comprises a furnace body, a smelting chamber, an atomizing chamber and a collection chamber. The bottom of a smelting chamber crucible is connected to a liquid storage bag through a flow guiding pipe, the bottom of the liquid storage bag is connected with a centrifugal spray nozzle through a flow guiding pipe, the centrifugal spray nozzle is of a circular arc shape, and the diameter is 20 cm; the outer side of the centrifugal spray nozzle is symmetrically provided with two liquid discharging openings, the diameter of the liquid discharging openings is 2 cm, and the open direction of the liquid discharging openings is the tangent line direction of the circular arc; a pulse pressurizing air pipe is arranged above the centrifugal spray nozzle, the pulse pressurizing air pipe is connected with an air source, and a control system controls the air source to perform pulse type pressurization on melt in the centrifugal spray nozzle; the periphery of the centrifugal spray nozzle is correspondingly provided with two inert gas spray nozzles, and the direction of the inert gas spray nozzles is opposite to the tossing-out direction of the liquid discharging opening melt generated when the centrifugal spray nozzle is rotated; the collection chamber is arranged below the atomizing chamber, and the collection chamber is internally provided with a cyclone separator and an ultrasonic vibrating screen. By means of the atomizing preparation device, the crushing effect is improved, and the uniform degree of the powder material is improved.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to an atomization preparation device for nickel-aluminum powder. Background technique [0002] Intermetallic Ni 3 Al has abnormal yield strength-temperature effect, as well as high wear resistance and corrosion resistance. It has become an important structural material in the contemporary aerospace industry, civil industry and other fields, especially in the field of aeroengine blades. prospect. 3D printing, or additive manufacturing, is a rapid prototyping process that has emerged in recent years. It adopts layer-by-layer powder coating, laser or electron beam melting and molding to realize the finishing molding of precision parts and avoid the occurrence of defects in the casting process. Defects such as shrinkage cavity and porosity have become a new material processing method. [0003] At present, the powder used in 3D printing is generally obtained by...

AI Technical Summary

Problems solved by technology

Part of the more advanced technology uses the centrifugal method to atomize the melt after being thrown out. In the process of using centrifugal throwing, the inventor has found through research that the blowing speed and angle of the gas in the atomization process after the melt is thrown out, the liquid The direction of the flow has an impact on the effect of atomization and the particle size of the powder after atomization, but the current centrifugal process adopts the method of blowing air after continuous centrifugation, which makes the particle size distribution of the prepared powder uneven

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