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VERSION:2.0
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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 15a
SUMMARY:Recent technologies of optimal induction heating for hot strip mill
DESCRIPTION:Induction heaters are installed in many hot strip mills (HSM’s) to improve process control performance. Induction Heating (IH) is a non-contact heating method that uses electricity as an energy source and heats up the strip by the principle of electromagnetic induction. Therefore, depending on the source of the electricity, IH emits less carbon dioxide and has relatively higher heating efficiency than other heating methods, and so assists in achieving carbon neutrality.
IH heating characteristics differ depending on the heating-coil and iron core shape of the primary conductor. Heating characteristics also differ depending on the through direction of the magnetic flux to the work pieces. In order to improve process control performance in a HSM, the optimum heating pattern should be determined depending on the above heating characteristics so that strip temperature can be appropriately controlled.
In this paper, we introduce recent technology of analysis and control for IH , using the three types of IH provided by TMEIC as examples.
First, as an example of computational simulation of IH, an overview of the three-dimensional finite element method (FEM) for magnetic field is introduced. By utilizing FEM, we can evaluate the heating characteristics of IH in various cases without needing experiments on actual equipment.
Next, recent temperature control in a HSM using IH is introduced. During rolling, the required heat-up amount is dynamically calculated based on a numerical model of IH-heating and a temperature model based on the two-dimensional finite difference method.
Furthermore, a calculation method for the optimum heat up pattern along the width direction is introduced. This method is based on the evolutionary computation algorithm. Optimal parameters for IH setup, such as position in width direction and power of IH, can be calculated even if several IHs of different types are combined.
CLASS:PUBLIC
DTSTART:20230615T142000
DTEND:20230615T144000
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