Effect of Electrode Induction Melting Gas Atomization Process on Fine Powder Yields: Diameter of Free-Fall Gas Atomizer
Source abstract
Abstract
Electrode induction melting gas atomization (EIGA) is a widely applied method for preparing ultra-clean metal powders. The method is a completely crucible-free melting and atomization process. The current paper aims to study the relationship between the diameter of the atomizer and powder yields in EIGA. The principal design objectives were to produce small-particle uniform powders by controlling the diameter of atomizer within the range of 20-40 mm. A computational fluid dynamics approach was developed to study the flow field characteristics of the atomizers in different diameters; the k-ε turbulence model, the volume of fluid model, the discrete phase model, and the empirical model were developed to explore the distribution of diameters. The simulation results showed that the maximum fine powder yields were obtained when d = 30 mm, and the velocity of the recirculation zone decreased with the increase in diameter, which reduced fine powder yields. It was proven that the simulated results agreed well with the experimental data. This study could provide theoretical data and guidance for the optimized design of atomizers to improve fine powder yields in EIGA.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fluid Dynamics and Heat Transfer · Particle Dynamics in Fluid Flows · Electrohydrodynamics and Fluid Dynamics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (25)
Show source-provided references
1. M. Wei, S. Chen, J. Liang and C. Liu, Effect of Atomization Pressure on the Breakup of TA15 Titanium Alloy Powder Prepared by EIGA Method for Laser 3D Printing, Vacuum, 2017, 143, p 185–194.10.1016/j.vacuum.2017.06.014 ↗
2. R.-P. Guo, L. Xu, B.Y.-P. Zong and R. Yang, Characterization of Prealloyed Ti-6Al-4V Powders from EIGA and PREP Process and Mechanical Properties of HIPed Powder Compacts, Acta Metallurgica Sinica (English Letters), 2017, 30(8), p 735–744.10.1007/s40195-017-0540-4 ↗
3. V.C. Srivastava and S.N. Ojha, Effect of Aspiration and Gas–Melt Configuration in Close Coupled Nozzle on Powder Productivity, Powder Metall., 2013, 49(3), p 213–218.10.1179/174329006X128304 ↗
4. N. Zeoli and S. Gu, Numerical Modelling of Droplet Break-Up for Gas Atomisation, Comput. Mater. Sci., 2006, 38(2), p 282–292.10.1016/j.commatsci.2006.02.012 ↗
5. N. Zeoli and S. Gu, Computational Simulation of Metal Droplet Break-Up, Cooling and Solidification during Gas Atomisation, Comput. Mater. Sci., 2008, 43(2), p 268–278.10.1016/j.commatsci.2007.10.005 ↗
6. N. Zeoli, H. Tabbara and S. Gu, CFD Modeling of Primary Breakup During Metal Powder Atomization, Chem. Eng. Sci., 2011, 66(24), p 6498–6504.10.1016/j.ces.2011.09.014 ↗
7. M. Xia, P. Wang, X. Zhang, J. Wu and C. Ge, Optimum Structure Design of Free-Fall Nozzle in Preparation Process of Superalloy Powders by Electrode Induction Gas Atomization Technology, Powder Metallurgy Technol., 2019, 37(04), p 288–297.
8. K.K. Guo, C.S. Liu, S.Y. Chen, H.H. Dong and S.Y. Wang, High Pressure EIGA Preparation and 3D Printing Capability of Ti-6Al-4V Powder, Trans Nonferrous Metals Soc China, 2020, 30(1), p 147–159.10.1016/S1003-6326(19)65187-3 ↗
9. K.K. Guo, C.S. Liu, S.Y. Chen, J.B. Li, Q. Fu, Iop, Effect of atomization pressure on the flow field distribution of TC4 alloy powder prepared by EIGA, 4TH INTERNATIONAL CONFERENCE ON ADVANCED COMPOSITE MATERIALS AND MANUFACTURING ENGINEERING 2017ed., 201710.1088/1757-899X/207/1/012046 ↗
10. C.S. Huang, Z.Q. Liu, Y.B. Wu, L.P. Wen, J. Chen, Z.Y. Xiao, Properties and Characterization of Ti-6Al-4V Alloy Fine Powders Prepared by Electrode Induction Melting Gas Atomization (EIGA) Technique, RARE METAL MATERIALS AND ENGINEERING, 48(10), 3302–3308 (2019) (in Chinese)
11. C.-R. Si, X.-J. Zhang, J.-B. Wang and Y.-J. Li, Design and Evaluation of a Laval-Type Supersonic Atomizer for Low-Pressure Gas Atomization of Molten Metals, Int. J. Miner. Metall. Mater., 2014, 21(6), p 627–635.10.1007/s12613-014-0951-4 ↗
12. M. Xia, P. Wang, X. Zhang and C. Ge, A Computational Fluid Dynamics (CFD) Investigation of the Primary and Secondary Atomization of the Free-Fall Atomizer in EIGA Process, Act Physica Sinica-Chinese Edition, 2018, 67, p 41–51.
13. H.P. Zou, Z.Y. Xiao, Pre-breakup mechanism of free-fall nozzle in electrode induction melting gas atomization, MATERIALS TODAY COMMUNICATIONS, 29, (2021) (in English)10.1016/j.mtcomm.2021.102778 ↗
14. S. Motaman, A.M. Mullis, R.F. Cochrane, I.N. McCarthy and D.J. Borman, Numerical and Experimental Modelling of Back Stream Flow During Close-Coupled Gas Atomization, Comput. Fluids, 2013, 88, p 1–10.10.1016/j.compfluid.2013.08.006 ↗
15. R. Kaiser, C. Li, S. Yang and D. Lee, A Numerical Simulation Study of the Path-Resolved Breakup Behaviors of Molten Metal in High-Pressure Gas Atomization: With Emphasis on the Role of Shock Waves in the Gas/Molten Metal Interaction, Adv. Powder Technol., 2018, 29(3), p 623–630.10.1016/j.apt.2017.12.003 ↗
16. X. Chen, "Research on flow field structure and atomization mechanism of close-coupled gas atomization ", Central South University, 2007
17. A. López, W. Nicholls, M.T. Stickland and W.M. Dempster, CFD Study of Jet Impingement Test erosion using Ansys Fluent® and OpenFOAM®, Comput. Phys. Commun., 2015, 197, p 88–95.10.1016/j.cpc.2015.07.016 ↗
18. G.E. Hunt and G.K. Batchelor, An Introduction to Fluid Dynamics, Math. Gaz., 1968, 52(380), p 206.10.2307/3612749 ↗
19. H. Lubanska, Correlation of Spray Ring Data for Gas Atomization of Liquid Metals, JOM, 1970, 22(2), p 45–49.10.1007/BF03355938 ↗
20. W. Duangkhamchan, F. Ronsse, F. Depypere, K. Dewettinck and J.G. Pieters, CFD Study of Droplet Atomisation using a Binary Nozzle in Fluidised Bed Coating, Chem. Eng. Sci., 2012, 68(1), p 555–566.10.1016/j.ces.2011.10.022 ↗
21. J. Wang, M. Xia, J. Wu, C. Ge, Ladle Nozzle Clogging in Vacuum Induction Melting Gas Atomization: Influence of the Melt Viscosity, Metallurgical and Materials Transactions B, (2022)10.1007/s11663-022-02537-y ↗
22. W. Zhao, F. Cao, Z. Ning, G. Zhang, Z. Li and J. Sun, A Computational Fluid Dynamics (CFD) Investigation of the Flow Field and the Primary Atomization of The Close Coupled Atomizer, Comput. Chem. Eng., 2012, 40, p 58–66.10.1016/j.compchemeng.2012.02.014 ↗
23. G.S.E. Antipas, Modelling of the Break Up Mechanism in Gas Atomization of Liquid Metals Part II, The gas flow model, Comput. Mater. Sci., 2009, 46(4), p 955–959.10.1016/j.commatsci.2009.04.046 ↗
24. J. Ting, J. Connor and S. Ridder, High-Speed Cinematography of Gas-Metal Atomization, Mater. Sci. Eng., A, 2005, 390(1–2), p 452–460.10.1016/j.msea.2004.08.060 ↗
25. A. ünal, Liquid Break-Up in Gas Atomization of Fine Aluminum Powders, Metallurgical Trans. B, 1989, 20(1), p 61–69.10.1007/BF02670350 ↗