Abstract
The induction heating with ferromagnetic metal powder bonded magnetic flux concentrator (MPB-MFC) demonstrates more advantages in surface heating treatments of metal. However, the moving heating application is mostly applied in the industrial production. Therefore, the analytical understanding of the mechanism, efficiency, and controllability of the moving induction heating process becomes necessary for process design and optimization. This paper studies the mechanism of the moving induction heating with magnetic flux concentrator. The MPB-MFC assisted moving induction heating for Inconel 718 alloy is studied by establishing the finite element simulation model. The temperature field distribution is analyzed, and the factors influencing the temperature are studied. The conclusion demonstrates that the velocity of the workpiece should be controlled properly and the heat transfer coefficient (HTC) has little impact on the temperature development, compared with other input parameters. In addition, the validity of the static numerical model is verified by comparing the finite element simulation with experimental results on AISI 1045 steel. The numerical model established in this work can provide comprehensive understanding for the process control in production.
Highlights
Induction heating plays an important role in many industrial manufacturing processes, such as hardening, brazing, tempering, and stress relieving [1]
The emergence of the metal powder bonded magnetic flux concentrator (MPB-MFC) made of ferromagnetic metal powder bonded with organic binder enables the induction heating process to possess higher heating efficiency and improved performance [2]
The factors influencing the eddy current intensity have not been researched clearly during this novel process. In this part, special attention is taken to the power density distribution generated by the eddy current and the temperature field evolution
Summary
Induction heating plays an important role in many industrial manufacturing processes, such as hardening, brazing, tempering, and stress relieving [1]. Due to its special material properties, the MPB-MFC exhibits less heat loss, longer coil life, and better formability into various shapes [3]. The MPB-MFC assisted induction heating system is studied by establishing the finite element simulation model and experimental verification [4]. It is crucial to analyze the coupled procedure with moving motion for better predictability in the induction process design and optimization. The mechanism of electromagnetic-thermal transformation with moving motion is studied, and the finite element model is established for a plane moving induction heating system with the MPB-MFC on Inconel 718 alloy. The precise modeling and simulation of the moving induction heating process could help better mechanism understanding, which provides an explicit method for process design and optimization. (a) The sketch map of the moving induction (b) Variation of B in the heating microelement
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