[1]峰山,张浩.电极感应熔化气雾化制备高速钢粉末雾化模拟[J].中国材料进展,2025,44(11):1061-1068.[doi:10.7502/j.issn.1674-3962.202401016]
　FENG Shan,ZHANG Hao.Simulation of Atomization of HighSpeed Steel Powder Prepared by Electrode Induction Melting and Aeroatomization[J].MATERIALS CHINA,2025,44(11):1061-1068.[doi:10.7502/j.issn.1674-3962.202401016]
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电极感应熔化气雾化制备高速钢粉末雾化模拟()

中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
44
期数:
2025年11
页码:
1061-1068
栏目:
出版日期:
2025-11-28

文章信息/Info

Title:
Simulation of Atomization of HighSpeed Steel Powder Prepared by Electrode Induction Melting and Aeroatomization
文章编号:
1674-3962(2025)11-1061-08
作者:
峰山; 张浩
内蒙古工业大学材料科学与工程学院，内蒙古 呼和浩特 010051
Author(s):
FENG Shan; ZHANG Hao
Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
关键词:
数值模拟; 一次雾化; 二次雾化; 高速钢液流; 粒径分布; 拉瓦尔喷管
Keywords:
numerical simulation;  primary atomization;  secondary atomization;  highspeed steel molten flow;  particle size distribution;  Laval nozzle
分类号:
TF123
DOI:
10.7502/j.issn.1674-3962.202401016
文献标志码:
A
摘要:
电极感应熔化气雾化(EIGA)是制备超洁净无夹杂物粉末的先进技术。雾化制粉过程涉及多物理场耦合，机理复杂，难以实现精准调控，而数值模拟可以进行可视化呈现。根据拉瓦尔喷管结构原理，运用SolidWorks建模软件构建非限制式喷嘴结构模型，并导入流体力学Fluent软件进行两相流模拟。高速钢液流的雾化过程分为一次雾化与二次雾化，采用精度更高的大涡模拟法（LES）结合自适应网格方法，对不同直径（3，4和5 mm）的液流进行雾化模拟。当出口质量流量趋于稳定，视为完成一次雾化模拟过程。二次雾化是在一次雾化的基础上建立子模型，并提取粒径为0.5 mm的单液滴进行模拟。结果表明，超音速气体射流对高速钢液流进行冲击雾化，在一次雾化过程中，随着高速钢液流直径的增大，其破碎成液滴群的平均粒径也变大。二次雾化采用更加精密的网格以捕捉破碎雾化后更加细小的液滴，模拟液滴粒径主要分布在50~250 μm。
Abstract:
Electrode induction melting gas atomization (EIGA) is an advanced powder preparation technology for producing ultra-clean, inclusion-free powders. The atomization powder preparation process involves multi-physical fields coupling, complex mechanisms make atomization difficult to achieve precise control, while numerical simulation can intuitively represent this intricate and hard-tomaster process. Based on the structural principle of the Laval nozzle, a supersonic nozzle model was constructed using the SolidWorks modeling software and imported into the computational fluid dynamics software Fluent for two-phase flow simulation. The atomization process of high-speed steel molten flow is divided into primary atomization and secondary atomization. A more accurate large eddy simulation (LES) method combined with adaptive mesh method was used to simulate the molten flow with different diameters (3, 4 and 5 mm). The primary atomization simulation was considered complete when the outlet mass flow rate tended to stabilize. For secondary atomization, a sub-model was established based on the primary atomization, and a single droplet with a particle size of 0.5 mm was extracted for simulation. The results show that the supersonic gas jet impacts and atomizes the high-speed steel molten flow. During the primary atomization process, as the diameter of the high-speed steel molten flow increases, the average particle size of the droplet group formed by its fragmentation also increases. The secondary atomization adopts a more precise mesh to capture the finer droplets generated by fragmentation and atomization. The simulation results indicate that the particle size of the droplet group is mainly distributed in the range of 50~250 μm.

备注/Memo

备注/Memo:
收稿日期：2024-01-12修回日期：2024-08-02 基金项目：2023自治区高校基本科研业务费项目（JY20230046） 第一作者：峰山，男，1983年生，讲师，硕士生导师， Email:summitpeak@163.com
更新日期/Last Update: 2025-10-30