IF IF melting furnace, mainly for low-frequency coreless furnace smelting steel, alloy steel, cast iron and other ferrous metals, as well as stainless steel, copper, aluminum and zinc and other non-ferrous materials with high melting efficiency, energy saving, environmental protection, uniform metal components , heating up fast, simple, easy to complete production lines and so on. With the continuous development of technology, as an intermediate frequency electric alternating current frequency conversion devices have been widely used in various industrial fields, IF furnace species diversity, according to the working principle can be divided into a series resonant frequency electric and parallel resonant frequency electric furnace, referred to the series and parallel type.