一、概述现代冶金和机械制造工厂的铸造车间,越来越多地采用新型的工频无芯感应电炉,来熔炼各种铸铁。有的还用来熔炼铸钢。感应电炉的工作原理,是将炉料——被熔炼的铸铁,置于通以工频电流i_1的感应器线圈W_1所产生的交变磁场φ中,根据电磁感应原理,炉料中感生涡流 First, an overview of modern metallurgical and mechanical manufacturing plant foundry, more and more use of new frequency-frequency coreless induction furnace, to smelt all kinds of cast iron. Some are also used to smelt cast steel. Induction furnace works, is the charge - is cast iron, placed in the frequency by the current i_1 sensor coil W_1 generated by the alternating magnetic field φ, according to the principle of electromagnetic induction, charge induced eddy current