Induction Heating and Heat Treatment
Electromagnetic induction is a way to heat electrically conductive materials such as metals. This article provides a brief history of electromagnetic induction and the development of induction heating technology. It explores various applications such as heating prior to metalworking, heat treating, melting, joining (welding, brazing/soldering, and shrink fitting), coating, paint curing, adhesive bonding, and zone refining of semiconductors. The article also discusses the advantages of induction heating.
Induction heating is a combination of several interrelated physical phenomena, including heat transfer, electromagnetics, and metallurgy. This article presents a brief review of different heat transfer modes, namely, heat conduction, thermal radiation, and convection. It focuses on the specifics of induction heating and heat treating applications. The article discusses the nonlinear and interrelated nature of a particular heat transfer phenomenon, physical property, and skin effect. It also presents simple case studies and general physical laws governing different heat transfer modes. The article also discusses the basic concepts of direct current and alternating current circuits, and reviews the theory of electromagnetic fields.
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