Induction heating of rotating cylindrical nonmagnetic billets with prescribed temperature profile

A new way of induction heating of cylindrical nonmagnetic billets is modelled and experimentally verified. This technology, among others, makes it possible to obtain a required temperature profile of the heated billet along its length. The billet is heated by rotation in a stationary magnetic field produced by high-parameter permanent magnets. The magnets are fixed on long arms made of ferromagnetic steel and the distance between the billet and arms can vary in the axial direction. The paper presents the continuous mathematical model of the problem, its numerical solution and verification of selected results by measurements.

[1]  L. A. Barragan,et al.  Modeling of Planar Spiral Inductors Between Two Multilayer Media for Induction Heating Applications , 2006, IEEE Transactions on Magnetics.

[2]  Fabrizio Dughiero,et al.  A new high efficiency technology for the induction heating of non magnetic billets , 2011 .

[3]  S. Lupi,et al.  Experimental and Numerical Analysis of DC Induction Heating of Aluminum Billets , 2009, IEEE Transactions on Magnetics.

[4]  J. Swinburne.  Electromagnetic Theory , 1894, Nature.

[5]  Luis Angel Barragan,et al.  Series Resonant Multiinverter with Discontinuous-Mode Control for Improved Light-Load Operation , 2011, IEEE Transactions on Industrial Electronics.

[6]  J. Acero,et al.  Series resonant multi-inverter with discontinuous-mode control for improved light-load operation , 2010, IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society.

[7]  Valery Rudnev,et al.  Handbook of Induction Heating , 2002 .

[8]  Frantisek Mach,et al.  Finite-Element 2-D Model of Induction Heating of Rotating Billets in System of Permanent Magnets and its Experimental Verification , 2014, IEEE Transactions on Industrial Electronics.

[9]  D. Meeker,et al.  Finite Element Method Magnetics , 2002 .

[10]  J. Acero,et al.  Magnetic vector potential based model for eddy-current loss calculation in round-wire planar windings , 2006, IEEE Transactions on Magnetics.

[11]  T. Lubin,et al.  Induction Heating of Aluminum Billets Subjected to a Strong Rotating Magnetic Field Produced by Superconducting Windings , 2009, IEEE Transactions on Magnetics.

[12]  N. Takahashi,et al.  3-D Eddy Current Analysis of Induction Heating Apparatus Considering Heat Emission, Heat Conduction, and Temperature Dependence of Magnetic Characteristics , 2009, IEEE Transactions on Magnetics.

[13]  P ? ? ? ? ? ? ? % ? ? ? ? , 1991 .

[14]  Jiin-Yuh Jang,et al.  Numerical and experimental thermal analysis for a metallic hollow cylinder subjected to step-wise electro-magnetic induction heating , 2007 .

[15]  Antonio Morandi,et al.  Operational constraints on the DC induction heating of aluminum billets , 2011 .

[16]  Ha Pham Ngoc,et al.  Phase Angle Control of High-Frequency Resonant Currents in a Multiple Inverter System for Zone-Control Induction Heating , 2011, IEEE Transactions on Power Electronics.

[17]  J. M. Coulson,et al.  Heat Transfer , 2018, A Concise Manual of Engineering Thermodynamics.

[18]  H. Fujita,et al.  Estimating Method of Heat Distribution Using 3-D Resistance Matrix for Zone-Control Induction Heating Systems , 2012, IEEE Transactions on Power Electronics.

[19]  Fabrizio Dughiero,et al.  Magnetic Field Synthesis in the Design of Inductors for Magnetic Fluid Hyperthermia , 2010, IEEE Transactions on Magnetics.

[20]  H. Fujita,et al.  A New Zone-Control Induction Heating System Using Multiple Inverter Units Applicable Under Mutual Magnetic Coupling Conditions , 2011, IEEE Transactions on Power Electronics.

[21]  Pascal Maussion,et al.  Induction Heating Technology and Its Applications: Past Developments, Current Technology, and Future Challenges , 2014, IEEE Transactions on Industrial Electronics.

[22]  Fabio Giulii Capponi,et al.  Axial-Flux Permanent-Magnet Generator for Induction Heating Gensets , 2010, IEEE Transactions on Industrial Electronics.

[23]  I. Dolezel,et al.  Model of Induction Heating of Rotating Non-Magnetic Billets and its Experimental Verification , 2014, IEEE Transactions on Magnetics.

[24]  Oscar Lucía,et al.  Computational Modeling of Two Partly Coupled Coils Supplied by a Double Half-Bridge Resonant Inverter for Induction Heating Appliances , 2013, IEEE Transactions on Industrial Electronics.