A metal powder preparation device

Abstract

The invention discloses a metal powder preparation device, which comprises a tundish heat preservation crucible, a flow guide pipe, an atomization nozzle and an atomization spray plate connected in sequence, the top of the flow guide pipe is provided with a raised part, and the bottom of the tundish heat preservation crucible is There is a concave part corresponding to the convex part at the end, and the convex part is clamped with the concave part. The heat-preserving graphite sleeve is set on the guide tube and the guide tube is fixedly connected with the thermally insulating graphite cover. The heating induction coil is wound on the thermally insulating graphite cover. The heating induction coil is a copper tube, and the outer wall of the heating induction coil is covered with an insulating layer. One end of the heating induction coil is connected to a water inlet pipe, and the other end is connected to a water outlet pipe, and the heating induction coil is connected to an alternating power supply. A gas distribution ring is provided, and the gas outlet of the gas distribution ring is connected with the air inlet of the atomizing nozzle, and the atomizing nozzle is fixedly connected with the gas distribution ring; Second water cooling channel. The metal powder preparation device of the invention can ensure the smooth preparation of the 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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