粉末冶金技术2024，Vol.42Issue(6)：573-581,9.DOI:10.19591/j.cnki.cn11-1974/tf.2022110008
熔体尖端锥角对气雾化制粉中雾化过程的影响
Effect of melt tip taper angle on atomization process in gas atomization
杨姝 1陈陟 2亓昌 1裴连政 2廖相巍3
作者信息
- 1. 大连理工大学工业装备结构分析优化与CAE软件全国重点实验室,大连 116024||大连理工大学宁波研究院,宁波 315016
- 2. 大连理工大学工业装备结构分析优化与CAE软件全国重点实验室,大连 116024
- 3. 鞍钢集团钢铁研究院,鞍山 114021
- 折叠
摘要
Abstract
Atomizing nozzle is the core component of the gas atomization process,which structural parameters,especially the melt tip taper angle of the delivery tube,have the great impact on the gas atomization results.Changing the taper angle of melt tip is more effective and economical than changing the atomization process parameters such as gas pressure and temperature.The computational fluid dynamics(CFD)method was used to simulate the internal flow field in the spray chamber with different melt tip taper angles in this paper.The commercial CFD software FLUENT was used to calculate and visualize the complex multiphase flow process in the closed spray chamber with high temperature and high pressure.The influence of various factors on the melt breaking effect in the single phase flow field was analyzed,and the volume of fluid(VOF)model was used to simulate the primary atomization process.The results show that the direction of air flow can be changed by changing the melt tip taper angle(16°,22°,28°,34°,40°,and 46°).With the change of taper angle,the stagnation point position,stagnation pressure,and suction pressure show the regular characteristics in single-phase flow field.The mass median diameter(MMD)of the primary atomization also varies with the change of melt tip taper angle.The droplet size distribution after primary atomization can be controlled by changing the melt tip taper angle.The minimum MMD is 304 μm when the melt tip taper angle is 34°.关键词
气体雾化/一次雾化/紧耦合喷嘴/熔体Key words
gas atomization/primary atomization/tightly-coupled nozzle/melt分类
矿业与冶金引用本文复制引用
杨姝,陈陟,亓昌,裴连政,廖相巍..熔体尖端锥角对气雾化制粉中雾化过程的影响[J].粉末冶金技术,2024,42(6):573-581,9.
