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Implementation of Low Frequency Welding Pre-heating System Using Induction Heating  

Yang, Juyeong (Hankyong National University, Department of Electrical, Electronic and Control Engineering, Human Science Institute)
Kim, Soochan (Hankyong National University, Department of Electrical, Electronic and Control Engineering, Human Science Institute)
Park, Junmo (Tongmyong University, School of Electronic and Biomedical Engineering)
Publication Information
Journal of the Institute of Convergence Signal Processing / v.19, no.2, 2018 , pp. 61-67 More about this Journal
Abstract
Welding preheating means that the surface of the base material to which the metal is welded before the main welding is heated to a constant temperature. It prevents the cracks of the adjacent influences such as reduction of material hardening degree by controlling the cooling rate, suppression of segregation of impurities, prevention of thermal deformation, and moisture removal. For this reason, it is a necessary operation for high quality welding. Induction heating is an efficient heating method that converts electric energy into heat energy by applying electromagnetic induction phenomenon. Compared with combustion heat generated by gas and liquid, it is clean, stable, and economical as well as rapid heating. It can be heated regardless of the shape, depth and material of the heating body by modifying the shape of the frequency and the coil with a simple structure. In this paper, we implemented a low frequency welding preheating system using induction heating technique and observed the temperature changes of coil resistance, inductance and automotive transmission parts according to the height of each transmission in winding coil for three kinds of automotive transmission parts. We confirmed that the change of current is a very important factor in the low frequency heating.
Keywords
Induction heating; Low frequency heating; Welding;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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