Atomizer capable of preventing high-melting-point substances from blocking and application of atomizer

Abstract

The invention discloses an atomizer capable of preventing high-melting-point substances from blocking. The atomizer comprises a honeycomb duct, a nozzle, a metal jacket, a heating element, a ceramic circular ring, a ceramic sealing ring, a reflective layer and the like, wherein the heating element is arranged in a clearance reserved between the honeycomb duct and the metal jacket; the inner surface of the metal jacket is provided with the reflective layer; one end of the metal jacket is tapered into an outer conical body from up to down from the position between one / third and one / second near an outlet of the lower end, and the lower end of the metal jacket is flush with the honeycomb duct; and the lower end of the ceramic circular ring suspended by a metal screw is in threaded connected with the ceramic sealing ring. The atomizer capable of preventing the high-melting-point substances from blocking can effectively solve the problem about the blocking of the high-melting-point substances, has the advantages of simple structure, convenience for installation and the like, and can effectively prevent the blocking, and materials are saved.

Description

technical field [0001] The invention relates to the technical field of producing ultra-fine powder by gas atomized melt, more specifically relates to an atomizer which prevents blockage of high-melting point substances and its application in the preparation process of metal or alloy ultra-fine powder. Background technique [0002] In the industry of preparing metal and alloy powders, gas atomization technology has become one of the main methods to produce high-performance metal and alloy powders. Because gas atomization has a high cooling rate and supercooling degree, gas atomization can effectively reduce the segregation of alloy components, and obtain alloy powder with fine microstructure and uniform composition. In addition, powders with non-equilibrium structures such as amorphous, quasicrystalline, microcrystalline or supersaturated solid solutions can be obtained by controlling the condensation rate, so gas atomization has been widely used in high-tech materials such a...

AI Technical Summary

Problems solved by technology

The second is that the metal droplets splash back during the atomization process, that is, the atomized droplets fly in the direction of the airflow atomization nozzle, and the splashed metal droplets adhere to the lower end of the airflow atomization nozzle, and continue to solidify and accumulate , which eventually leads to blockage of the guide tube on the center hole of the airflow atomization nozzle and interrupts the atomization process

Among them, the second and third phenomena occur more frequently on the diversion tube. The former is due to the cooling of the molten metal due to its proximity to the flying gas, and the latter is due to the reaction with oxygen, so once the diversion The pipe is clogged and production will not continue

Especially for the case of compound blockage, the conventional method of removing the atomizer to unblock it often cannot solve the problem, mainly because the melting point of the compound is generally high. In this case, the only way to replace the entire atomizer , which greatly increases the production cost, but also affects the preparation efficiency and product quality

[0005] At present, there are many technologies for improving and updating the atomizer, and there are many related patents, but most of these technologies are about how to control the particle size of metal powder and how to improve production efficiency, etc., and there are few about how to prevent the blockage of the atomizer, especially Patents and technologies for high melting point compounds

[0006] In short, how to prevent the blockage of the diversion tube of the atomizer without affecting the production efficiency is a difficult problem

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