Info

Title:

Simulation of Atomization of High Speed Steel Powder Prepared by Electrode Induction Melting and Aeroatomization

Author(s):

FENG Shan; ZHANG Hao

Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China

Keywords:

Numerical simulation;  Primary and secondary atomization;  High speed steel flow;  Particle size distribution;  laval nozzle;  hartmann resonator

CLC:

PACS:

TF123

DOI:

-

DocumentCode:

Abstract:

Electrode Induction Melting Gas Atomization (EIGA) is an advanced technology for producing ultra-clean powder free from inclusions. The atomization process is highly intricate and can be visualized through numerical simulation. In this study, a supersonic nozzle model based on the structure principle of Laval nozzle was designed using SolidWorks modeling software, and two-phase flow simulation was conducted using FLUENT software. The atomization process of high-speed steel liquid flow was divided into primary and secondary atomization stages. Large Eddy Simulation (LES) with higher accuracy was chosen as the model, and the adaptive mesh method was employed to simulate different liquid flow diameters (3mm, 4mm, 5mm). Upon reaching a stable outlet mass flow rate, the atomization simulation process was considered complete. A secondary atomization model was established based on the primary atomization, and a single droplet with a particle size of 0.5mm was extracted for simulation. The results indicate that the supersonic gas jet effectively atomizes the high-speed steel liquid flow. As the diameter of the high-speed steel liquid flow increases, so does the average particle size of the resulting droplets broken by it. For secondary atomization, a more precise mesh will be used to capture smaller droplets after crushing and atomizing; consequently, the average size distribution of simulated droplet particles is approximately 170 μm.The statement serves as a supplementary guide for the effective facilitation and subsequent implementation of the enterprise’s experimental endeavors