A Simulation Model for the Inductor of Electromagnetic Levitation Melting and Its Validation

This article presents a numerical model of electromagnetic levitation melting and its experimental validation. Levitation melting uses the phenomenon of magnetic induction to float a melted, usually metallic, conductor in an electromagnetic field. With the appropriate configuration of the coil (the source of the alternating magnetic field), the eddy currents induced in the molten batch interact with the coil magnetic field, which causes the melted metal to float without direct contact with any element of the heating system. Such a contactless process is very beneficial for melting very reactive metals (e.g., titanium) or metals with a high melting point (e.g., tungsten). The main disadvantage of levitation melting is the low efficiency of the process. The goal of the authors is to develop, by means of a numerical simulation and optimization tools, a system for levitation melting with acceptable efficiency. To achieve this, it is necessary to develop a reliable and representative computational model. The proposed model includes an analysis of the electromagnetic field, with innovative modeling of the convective heat transport. Experimental validation of the model was performed using aluminum alloy, due to the lack of the need to use a protective atmosphere and the ease of measurements. The measurements included electrical values, the melted batch positions during levitation, the melting time, and the temperature distribution in its area. The verification showed that the compliance between the computational model and the simulation for the position of the batch was accurate to 2 mm (6.25%), and the consistency of the batch melting time was accurate to 5 s (5.49%). The studies confirmed the good representativeness of the developed numerical model, which makes it a useful tool for the future optimization of the levitation melting system.

[1]  D. Pánek,et al.  Performance analysis of a robust design optimization of a solenoid with different sensitivity metrics , 2022, J. Comput. Appl. Math..

[2]  V. Payor,et al.  The Present Issues of Control Automation for Levitation Metal Melting , 2022, Symmetry.

[3]  H. Zandvliet,et al.  3D modeling of electromagnetic levitation coils , 2021, Current Applied Physics.

[4]  Lukasz Malinski,et al.  Influence of Selected Model Parameters on the Electromagnetic Levitation Melting Efficiency , 2021, Applied Sciences.

[5]  C. Jen,et al.  Effect of Rare Earth Metals (Y, La) and Refractory Metals (Mo, Ta, Re) to Improve the Mechanical Properties of W–Ni–Fe Alloy—A Review , 2021, Materials.

[6]  A. Kuperman,et al.  Envelope dynamics of resonant inverter driven electromagnetic levitation melting system with experimental verification , 2020, Mechanical Systems and Signal Processing.

[7]  R. Boyer,et al.  Opportunities and Issues in the Application of Titanium Alloys for Aerospace Components , 2020, Metals.

[8]  Alon Kuperman,et al.  Electro-mechanical modeling of electromagnetic levitation melting system driven by a series resonant inverter with experimental validation , 2020 .

[9]  V. Linkov,et al.  A review on crucibles for induction melting of titanium alloys , 2020 .

[10]  Jan K. Sykulski,et al.  A Benchmark TEAM Problem for Multi-Objective Pareto Optimization in Magnetics: The Time-Harmonic Regime , 2020, IEEE Transactions on Magnetics.

[11]  J. Smolka,et al.  Experimental Analysis of the Aluminium Melting Process in Industrial Cold Crucible Furnaces , 2019, Metals and Materials International.

[12]  K. Vutova,et al.  Effect of Electron Beam Method on Processing of Titanium Technogenic Material , 2019, Metals.

[13]  Tao Wang,et al.  Vacuum Electromagnetic Levitation Melting of Ti–Al Based Alloy Prepared by Aluminothermic Reduction of Acid Soluble Ti Bearing Slag , 2019, Metals and Materials International.

[14]  J. Smolka,et al.  Numerical examination of the evaporation process within a vacuum induction furnace with a comparison to experimental results , 2019, Applied Thermal Engineering.

[15]  T. Okabe,et al.  Current Status of Titanium Recycling and Related Technologies , 2018, JOM.

[16]  Iain Todd,et al.  Refractory metals as structural materials for fusion high heat flux components , 2018, Journal of Nuclear Materials.

[17]  A. Hasegawa,et al.  Thermal properties of pure tungsten and its alloys for fusion applications , 2018, Fusion Engineering and Design.

[18]  R. Hu,et al.  A Combined Electromagnetic Levitation Melting, Counter‐Gravity Casting, and Mold Preheating Furnace for Producing TiAl Alloy , 2018 .

[19]  Shyam Krishna Nagar,et al.  Performance enhancement of magnetic levitation system using teaching learning based optimization , 2017, Alexandria Engineering Journal.

[20]  K. Roh,et al.  Brief review of removal effect of hydrogen-plasma arc melting on refining of pure titanium and titanium alloys , 2016 .

[21]  G. Hieftje,et al.  Local cooling, plasma reheating and thermal pinching induced by single aerosol droplets injected into an inductively coupled plasma , 2016 .

[22]  Yu Cao,et al.  Thermodynamic design of electroslag remelting slag for high titanium and low aluminium stainless steel based on IMCT , 2016 .

[23]  A. Mclean,et al.  Applications of Electromagnetic Levitation and Development of Mathematical Models: A Review of the Last 15 Years (2000 to 2015) , 2016, Metallurgical and Materials Transactions B.

[24]  A. Gokhale,et al.  Effect of vacuum arc remelting and processing parameters on structure and properties of high purity niobium , 2015 .

[25]  Lin Feng,et al.  The Influence of Eddy Effect of Coils on Flow and Temperature Fields of Molten Droplet in Electromagnetic Levitation Device , 2015, Metallurgical and Materials Transactions B.

[26]  D. Matson,et al.  Magnetohydrodynamic Modeling and Experimental Validation of Convection Inside Electromagnetically Levitated Co-Cu Droplets , 2014, Metallurgical and Materials Transactions B.

[27]  R. Przylucki,et al.  The Stress Effects Occurring During Induction Heating of Titanium , 2013 .

[28]  Zachary L. Royer,et al.  Coil optimization for electromagnetic levitation using a genetic like algorithm , 2013 .

[29]  Bernard Nacke,et al.  Numerical Modeling of Free Surface Dynamics of Melt in an Alternate Electromagnetic Field: Part I. Implementation and Verification of Model , 2013, Metallurgical and Materials Transactions B.

[30]  V. Bojarevics,et al.  Levitated Liquid Dynamics in Reduced Gravity and Gravity-Compensating Magnetic Fields , 2012 .

[31]  K. Pericleous,et al.  Multi-physics modeling in the electromagnetic levitation and melting of reactive metals , 2011 .

[32]  G. Reinhart,et al.  Gas atomization of Al-Ni powders: Solidification modeling and neutron diffraction analysis , 2011 .

[33]  Chunxiang Cui,et al.  Titanium alloy production technology, market prospects and industry development , 2011 .

[34]  A. Kermanpur,et al.  Electromagnetic-thermal coupled simulation of levitation melting of metals , 2011 .

[35]  C. Gandin,et al.  A generalized segregation model for concurrent dendritic, peritectic and eutectic solidification , 2009 .

[36]  G. Frommeyer,et al.  High Temperature Materials Based on the Intermetallic Compound NiAl Reinforced by Refractory Metals for Advanced Energy Conversion Technologies , 2008 .

[37]  Johan Driesen,et al.  Experimental validation of electromagnetic-thermal coupled modelling of levitation melting , 2008 .

[38]  C. Bullard,et al.  Spin-up instability of a levitated molten drop in magnetohydrodynamic-flow transition to turbulence , 2005, IEEE Transactions on Magnetics.

[39]  Mohamed S. El-Genk,et al.  A review of refractory metal alloys and mechanically alloyed-oxide dispersion strengthened steels for space nuclear power systems , 2005 .

[40]  W. Zeng,et al.  An investigation of a new near-beta forging process for titanium alloys and its application in aviation components , 2005 .

[41]  R. Hyers.  Fluid flow effects in levitated droplets , 2005 .

[42]  R. Atwood,et al.  Multiscale modelling of microstructure formation during vacuum arc remelting of titanium 6-4 , 2004 .

[43]  Chang-Da Wen,et al.  Emissivity characteristics of roughened aluminum alloy surfaces and assessment of multispectral radiation thermometry (MRT) emissivity models , 2004 .

[44]  Mitsuo Niinomi,et al.  Recent metallic materials for biomedical applications , 2002 .

[45]  M. Niinomi,et al.  Alloying titanium and tantalum by cold crucible levitation melting (CCLM) furnace , 2000 .

[46]  A. Choudhury,et al.  Electron Beam Melting and Refining of Metals and Alloys , 1992 .

[47]  E. Strokin,et al.  Analysis of Refractory High Entropy Alloy Wtamonbv Produced by Additive Manufacturing Using Mixed Elemental Alloying Powder , 2022, SSRN Electronic Journal.

[48]  R. J. H. Wanhill,et al.  Aerospace Materials and Material Technologies , 2017 .

[49]  E. Baake,et al.  Large-scale levitation melting and casting of titanium alloys , 2017 .

[50]  P. Ostrowski,et al.  Analiza dynamiki wsadu podczas topienia indukcyjnego w warunkach lewitacji , 2016 .

[51]  E. Baake,et al.  New technology for large scale electromagnetic levitation melting of metals , 2015 .

[52]  Zhu Zhi-sho,et al.  Recent Research and Development of Titanium Alloys for Aviation Application in China , 2014 .

[53]  Baake,et al.  Numerical Modelling of Free Surface Dynamics of Melt in Alternate Electromagnetic Field , 2012 .

[54]  W. Martienssen,et al.  Springer handbook of condensed matter and materials data , 2005 .

[55]  K. Mimura,et al.  Purification of tantalum by means of hydrogen plasma arc melting , 1997 .