Combined atomization centrifugal rotating disk

Abstract

The invention discloses a combined atomization centrifugal rotating disk. The combined atomization centrifugal rotating disk comprises a centrifugal disk and a centrifugal tray. The centrifugal disk is detachably and coaxially nested and connected to the centrifugal tray. The bottom end of the centrifugal tray is in threaded connection with a motor shaft. As the combined atomization centrifugal rotating disk provide by the invention is of a combined structure, and the defects of an adopted single structure is hard to machine, high in manufacturing cost and short in service life are avoided. The combined atomization centrifugal rotating disk is widely applied to atomization powder making of different kinds of metals or alloys. Even if in the atomization process of high-melting-point alloy materials, the centrifugal disk cannot be broken due to heat impact. The rotating disk can make a metal melt be distributed on the surface of the metal melt uniformly to form a layer of complete liquid film and be split into finer liquid drops under the action of centrifugal force, and then the liquid drops are cooled and condensed into micro powder in the flying process.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a centrifugal rotating disc for combined atomization. Background technique [0002] The atomization method belongs to the mechanical pulverization method, which is widely used, and its production scale is second only to the reduction method. Combined atomization method is a new technology of metal atomization powder making. The prepared powder has small particle size, narrow particle size distribution and good sphericity. It has broad application prospects in 3D printing, metal powder injection molding, electronic paste and other fields. [0003] The combined atomization method combines free-falling gas atomization and centrifugal atomization. In combined atomization, the material selection, design and manufacture of the rotating disk are very critical. At present, combined atomization generally adopts the rotary disc used in centrifugal atomization, and most of them adopt cera...

AI Technical Summary

Problems solved by technology

At present, combined atomization generally adopts the rotary disc used in centrifugal atomization, and most of them adopt ceramic integrated structure, which is difficult to process, high in cost, and short in service life; in terms of scope of application, most of them are only suitable for atomization of low melting point metals or alloys. powder, and for high melting point metal materials, it is easy to cause cracking and damage of the centrifugal disc due to the thermal shock of the atomization process

In addition, at the beginning of centrifugal atomization, a part of metal melt is easy to adhere to the rotating disk due to cooling and solidification, which seriously affects the normal progress of atomization powder making, reduces atomization efficiency and increases costs

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