Metal powder preparation device

Abstract

The invention discloses a metal powder preparation device which comprises a tundish insulation crucible, a diversion pipe, an atomizing nozzle and an atomizing spray tray which are connected in sequence. A bulge part is arranged at the top end of the diversion pipe, a sunken part corresponding to the bulge part is arranged at the bottom end of the tundish insulation crucible, and the bulge part is buckled with the sunken part. An insulation graphite sleeve is arranged on the diversion pipe in a sleeved mode, and the diversion pipe is fixedly connected with the insulation graphite sleeve. The insulation graphite sleeve is wound with a heating induction coil, the heating induction coil is a copper pipe, and the outer wall of the heating induction coil is wrapped with an insulating layer. One end of the heating induction coil is connected with a water inlet pipe, and the other end of the heating induction coil is connected with a water outlet pipe. The heating induction coil is connected with an alternating power supply. An air distributing ring is arranged on the diversion pipe in a sleeved mode, an air outlet of the air distributing ring communicates with an air inlet of the atomizing nozzle, and the atomizing nozzle is fixedly connected with the air distributing ring. A first water cooling channel is formed in the atomizing spray tray, and a second water cooling channel is formed in the atomizing nozzle. The metal powder preparation device can ensure the smooth preparation of metal powder.

Description

technical field [0001] The invention relates to the technical field of metal smelting equipment, in particular to a metal powder preparation device. Background technique [0002] In recent years, metal 3D printing technology has developed rapidly, and the requirements for metal powder, the raw material of 3D printing technology, are getting higher and higher. The main performance indicators of metal powders are characterized by small particle size, narrow particle size distribution, high sphericity, good fluidity, and high bulk density; the existing powder preparation technologies are faced with low fine powder yield and poor powder sphericity. And other disadvantages, greatly increasing the cost of metal powder for metal 3D printing. [0003] The gas atomization method to prepare metal powder is currently the most common method suitable for metal 3D printing technology. The gas atomization method converts the kinetic energy of the gas into the surface energy of the metal l...

AI Technical Summary

Problems solved by technology

Secondly, in the atomization process, the heat preservation effect of the guide tube is the key to determine the continuity of the atomization. The sharp drop in temperature at the blowing point causes the metal to solidify in the conduit and cause plugging

[0005] The existing metal powder preparation device cannot guarantee the coaxiality of the guide tube and the nozzle, and there is a problem of plugging, which leads to unsmooth powder production, and the distance between the guide tube and the atomizing nozzle is fixed, which is not conducive to the production of different physical parameters. Optimal Selection of Metal Powder Preparation Parameters

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