Furnace is electrical energy into heat in the furnace of the workpiece heating furnace, furnace with fuel, the advantages of electric furnace: furnace atmosphere easy control material heating heating temperature, temperature, and easy to control.
Furnace is put furnace within of power into for heat on artifacts heating of heating furnace, with fuel furnace compared, furnace of advantages has: furnace within atmosphere easy control, even can pumped into vacuum; material heating fast, heating temperature high, temperature easy control;
production process more easy achieved mechanized and automation; labor health conditions good; efficiency high; products quality good, and more environmental, conducive to ease increasingly serious of environment problem.
On the metallurgical furnaces are mainly used for steel, ferro-alloys, non-ferrous metal smelting, heating, and heat treatment.
Emerged in the late 19th century industrial-scale furnace, since in the 1950 of the 20th century, due to the high demand for metallurgical products in growth and electricity declined with the development of the power industry, share of furnaces in metallurgical furnaces rise year by year.
Furnace can be divided into electric resistance furnaces, induction furnaces, electric arc furnaces, furnace, such as plasma, electron beam furnace.