## Induction Heating |

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air-gap ratio alloys alternating magnetic flux alternating-current resistance aluminum base dimension carbon steel cent charge resistivity circuit values CM CM CM cm length coefficient coil conductor copper conductors coreless induction furnace corresponding crucible Curie point decreases diameter eddy currents eddy-current watts Effect of charge electrical efficiency Electrical Resistivities equation example given in Fig given in Table graphs of Fig hardening heat content heat cycle heat development heater hollow cylindrical charge hysteresis induction heating inductor insulation kwhr liquid molten metal number of turns oersteds ohm-cm3 ohms per cm permeability power density primary coil proximity effect radius rate of heat rated index ratio RATIO A Fig reactance rectangular conductor rectangular section reference dimension resistance function resistor furnace secondary circuit shape of charge sheet shown in Fig single-layer skin effect solid cylindrical charge standard frequency stationary heating surface thermal conduction volt-amperes voltage volts watts per sq