Induction furnaces are important applications for industry

Induction furnace has high electrical and thermal efficiency , fast heating speed , easy to realize mechanization and automatic operation , good product quality , low production cost , no pollution , good working conditions , energy saving , etc . Widely used in industrial production .
Induction heater technology is mainly divided into high frequency , intermediate frequency and power frequency . The medium frequency melting furnace is mainly used for the melting and heat preservation of non-ferrous metals and their alloys . It is also used for the melting and heat preservation of steel and cast iron . In addition to the general advantages of electro metallurgy , Such as easy to create the necessary atmosphere , easy to adjust the temperature specifications , reduce metal burning , ensure the quality of castings , improve productivity and reduce the labor intensity of workers , but also ensure the uniform composition of the alloy due to the electromagnetic stirring effect generated in the molten metal . The application of the intermediate frequency furnace to inductive heating of the metal material before forging , stamping , extrusion and rolling hot processing is also carried out , and is also used for heat treatment of the workpiece .
The use of high frequency and medium frequency currents for surface quenching of workpieces has become a major surface quenching method in the modern machine manufacturing industry . For surface hardening of workpieces with large workpiece diameters and thicker quenching layers , induction furnace with lower frequency are used .
Induction heating is not only used for heating before hot working such as forging and stamping , but also on heat treatment of quenching and tempering , intermediate recrystallization annealing of cold extrusion workpieces , stress annealing of welds , etc . In recent years , low-temperature induction heating has also been applied to hot charging such as ring gears and flywheels , hot mounting of motor rotors and shafts , and hot charging and hot charging of bearing inner rings .