Electromagnetic Modeling and Thermal Analysis of a Non-Axisymmetric System for Induction Brazing

Dragomir Grozdanov, Khristo Tarnev and Nikolay Hinov
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Dragomir Grozdanov: Department of Power Electronics, Technical University of Sofia, 1000 Sofia, Bulgaria
Khristo Tarnev: Department of Applied Physics, Technical University of Sofia, 1000 Sofia, Bulgaria
Nikolay Hinov: Department of Power Electronics, Technical University of Sofia, 1000 Sofia, Bulgaria

Energies, 2020, vol. 13, issue 14, 1-14

Abstract: The electromagnetic process happening between an induction brazing coil and the brazing assembly was studied and is described in the following pages. Using the tools of numerical analysis, we managed to achieve 3-D simulation of the process, which includes presentation of the magnetic field, thermal heat transfer, and time dependence. The results presented are considered for two of commonly used materials—copper and stainless steel in the shape of pipes. The induction brazing coil is a complex C-shape to match with the real industrial practices. The results obtained from the model are in accordance with the experimental results, as in both the model and the experiment, the required temperature was reached in about 6 s. It was found that during the brazing process, the inductance of the winding increases by about 4 nH and the resistance by 1.5 m?, which is important for the coordination of the power supply.

Keywords: numerical analysis; induction brazing; complex shape coils; industrial applications (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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