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O.S. Fishman
Induction heating or melting with multiple frequencies
B. Mikhailovich, A. Kapusta, M. Khavkin, S. Lesin, B. Tilman
On the potential use of an harmonic rotating magnetic fields in electromagnetic processing of materials
J.P. Jordan
Method of high‐frequency induction heating
V. Demidovich, F. Chmilenko, B. Nikitin, V. Olenin, E. Grigoriev
Electromagnetic processing of titanium alloys before plastic deformation
H.J. Peter
Simultaneous dual‐frequency induction hardening (SDF method) a new way of heat treatment
S. Lupi, F. Dughiero, M. Forzan
Modelling single‐ and double‐frequency induction hardening of gear‐wheels
Purpose – The purpose of this paper is to determine technological potential of using multi‐frequency electromagnetic fields for the optimization of induction heating process. Design/methodology/approach – The aim of the research is achieved by using phase‐modulated current feeding the solenoid that excites the magnetic field. In this case, the magnetic field, side by side with the carrier frequency, contains frequency spectrum arising due to modulation. At that, spectral components possess different penetration depths, which ensures a more uniform current density distribution over the cross‐section of the heated object. The results are obtained using theoretical analysis of electrodynamic and thermal processes in the heated body. Findings – In the course of the work, a basic possibility of the objective realization is established, and its high enough efficiency is achieved using a sufficiently large range of modulation parameters. Practical implications – The described method can significantly improve the technology of thermal treatment of metals and alloys liable to the formation of surface defects due to extreme temperature stresses. Originality/value – The novelty of the paper consists in the use of phase‐modulated currents in induction heating.
COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering – Emerald Publishing
Published: Sep 13, 2011
Keywords: Induction heating; Phase modulation; Electromagnetic fields; Frequency spectrum; Temperature field; Heat transfer
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