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...Asm piht chapter pm page international all rights reserved www asminternational org practical induction heat treating g theory of heating by was first noted when it found that produced in transformer and motor windings as mentioned the metal this book accordingly studied so motors transformers could be built for maximum efficiency minimizing losses develop ment high frequency power supplies provided a means using surface hardening early use involved trial error with up personal knowledge specific applications but lack understanding basic principles through out years has been expanded extending currently into computer modeling processes these theories helps to understand application applied occurs due electromagnetic force fields producing an electrical current part parts resis tance flow electric resistance metals conduct electricity while offering causes show form is because according law conser vation energy transformed from one another not lost are based upon formu la p i r where am...