Development of a compact cooling chamber for solidification processes in the metal powder production
Authors: Gaisina A.R.
Published in issue: #6(150)/2024
DOI: 10.18698/2308-6033-2024-6-2367
Category: Metallurgy and Science of Materials | Chapter: Powder Metallurgy and Composite Materials
The paper considers a problem in developing a condensation chamber for cooling the metal powders used in the spheroidization processes. It shows that in the practically used scheme for obtaining the metal powders after metal melting and its atomization the particles are solidifying and taking a spherical shape exposed to the surface tension. Industrial version requires a large flow of the gas-powder mixture, which is determined by significant geometric dimensions of the chamber itself in the particles’ solidification. Besides, a problem also appears of the particles sedimentation in the corners when using the standard flat top coolers. The paper aims at optimizing the gas dynamics flow in a chamber preventing a flow stall at the inlet and reducing the particles motion speed with maintaining the central flow structure. The research special feature lies in the proposed method of gas deceleration of the particle flow at the chamber miniaturized geometric dimensions. The paper identifies a device design that implements the gas braking method and studies the system operation parameters. Mathematical model of the particles motion in a chamber was developed. The model was studied using the CFD method.
EDN TZMFPF
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