Analysis of the induction heating for moving inductor coil

Yun, Jin-Oh; Yang, Young-Soo

doi:10.1007/bf02916020

Cited by 9 publications

(6 citation statements)

References 7 publications

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“…18 Several works have been focused on the uniformity in temperature distribution for movable induction heating. 19–23 Gao and Qin 19 numerically investigated the effect of the feed path and workpiece curvature on the temperature uniformity. They observed that the temperature distribution uniformity varying with the change in curvature and direction of feed path.…”

Section: Introductionmentioning

confidence: 99%

A methodological approach to design a coil for localised high-frequency induction heating of flat plate

Biswal

Pal

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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High-frequency induction heating (HFIH) is a quick heating technology, mostly used for localised surface treatment. The HFIH process has a portable RLC tank circuit consisting of a fixed size capacitor bank, load-matching transformer and a small size inductor coil. However, the work feasibility of small size inductor coil involves complexity in matching the resonant frequency between the RLC tank circuit and the high-frequency induction power source. Because the resonant frequency of the RLC tank circuit depends on the shape, size and configuration of the considered inductor coil. To address the issue, a numerical model-based approach is proposed herein to do the frequency matching for any coil configurations. Three different coil configurations such as co-direction, single-direction and opposite-direction current coils are considered in the simulation study to optimise their geometry and estimation of resonant frequencies. Based on the derived resonant frequency of the inductor coils, another coupled electromagnetic-thermal model is developed to get the thermal characteristics for a planar heating process of an 8 mm thick mild steel plate. After finding the optimal geometry of all coil configurations, the coils are fabricated and used in experimentation to verify the results of numerical models. It is found that the coil geometry has a significant effect on the resonant frequency and the heating characteristics. In addition, the current work emphasises a systematic approach to address the temperature non-uniformity that arises at the inlet and outlet positions of the workpiece in movable induction heating.

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Section: Introductionmentioning

confidence: 99%

A methodological approach to design a coil for localised high-frequency induction heating of flat plate

Biswal

Pal

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Zhu [8] used a fully coupled analysis to simulate the processing of induction line heating, but this analysis required a vast number of calculations and amount of computational time. Yun [9] used the magnetic thermal coupled finite element method to simulate the high-frequency induction line heating process, considering the influence of temperature changes on the magnetic field distribution. This method ignored the influence of plate deformation on the heat generation.…”

Section: Introductionmentioning

confidence: 99%

Effect of Plate Curvature on Heat Source Distribution in Induction Line Heating for Plate Forming

et al. 2020

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Line heating is an essential process in the formation of ship hull plates with a complex curvature. Electromagnetic induction heating is widely used in the line heating process. In electromagnetic induction heating, the shape of the coil and the air gap between the inductor and workpiece could influence the heat source distribution. Moreover, in the line heating process, the change of curvature of the plate will cause a change of the air gap of the inductor. Magnetic thermal coupling calculation is an effective method for simulating induction heating. This paper used the finite element method to calculate the distribution of heat sources in different initial plate curvatures and coil widths. The changes in heat source distribution and its laws were investigated. The results show that when the coil width is less than 100 mm, the effect of plate curvature on heat source distribution and strain distribution is not apparent; when the coil width is greater than 100 mm, the plate curvature has a visible effect on the heat generation distribution. In the case of a curvature increasing from 0 to 1 and a coil width equal to 220 mm, the Joule heat generation in the center of the heating area is reduced by up to 21%.

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“…Also, high technological demands about temperature distribution on the surface of the cylinder make it necessary to use several inductors along the axis of the cylinder, and to equip this set with precise system of temperature measurement and control, which requires the exact knowledge about dynamic parameters of the object. Infrared camera was quite often used for precise temperature measurement [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…Transfer function models of heated rotating cylinderOne of widely used transfer function models of the object of studies is the one, in which temperature of each section of the object is the output signal, and the input signal is the power provided to the object[2]. Its structural scheme is shown inFig.…”

mentioning

confidence: 99%

Using Infrared Camera for Dynamic Properties Identification of Induction Heated Rotating Steel Cylinder

Kucharski

Frączyk

Urbanek

2012

Image Processing & Communications

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Analysis of the induction heating for moving inductor coil

Cited by 9 publications

References 7 publications

A methodological approach to design a coil for localised high-frequency induction heating of flat plate

A methodological approach to design a coil for localised high-frequency induction heating of flat plate

Effect of Plate Curvature on Heat Source Distribution in Induction Line Heating for Plate Forming

Using Infrared Camera for Dynamic Properties Identification of Induction Heated Rotating Steel Cylinder

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