Combined atomization centrifugal rotating disk

Abstract

The invention discloses a centrifugal rotary disc for combined atomization, which comprises a centrifugal disc and a centrifugal tray, the centrifugal disc is detachably coaxially nested and connected to the centrifugal tray, and the bottom end of the centrifugal tray is screwed to the motor shaft. The combined atomizing centrifugal rotating disk provided by the present invention avoids the disadvantages of difficult processing, high manufacturing cost and short service life of a single structure due to the adoption of a composite structure; it can be widely used in the atomization powder making of different metals or alloys, Even during the atomization of high-melting point alloy materials, the centrifugal disc will not be broken by thermal shock. The rotating disk can evenly distribute the metal melt on its surface to form a complete liquid film, which is split into finer droplets under the action of centrifugal force, and then cooled and solidified into fine powder during flight.

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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