Abstract
This chapter discusses electromagnetic induction heating. Electromagnetic induction heating utilizes a changing magnetic field to induce electrical eddy currents in the material being heated. These eddy currents dissipate energy, thus heating the material. This process is only appropriate for electrically conductive materials such as metals. The predominant means of creating a strong magnetic field is through the use of a coil. The flow of AC current through a coil generates an alternating magnetic field that extends through the material being heated. Coils are individually designed to heat simple or very complex shapes. The heating pattern, depth, rate, and uniformity can be closely controlled through the coil design, power supply frequency, and power density level. Thus, induction heating can be used for surface heating, through heating, or melting, and is widely available for a wide variety of applications.
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