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Principle and classification of induction furnace

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[Abstract]:
Themaincomponentsofinductionfurnaceincludeinductor,furnacebody,powersupply,capacitorandcontrolsystem.Undertheactionofalternatingelectromagneticfieldininductionfurnace,thematerialwillgenerateeddycurren
The main components of induction furnace include inductor, furnace body, power supply, capacitor and control system. Under the action of alternating electromagnetic field in induction furnace, the material will generate eddy current and heat and melt. Under the action of alternating magnetic field, the composition and temperature of melt in the furnace are homogeneous, and the melting temperature can reach 1650 degrees. In addition to melting in atmosphere, induction furnace can also be melted in vacuum, argon and neon and other protective atmospheres, so as to meet the requirements of special quality.
 
Induction furnace has outstanding advantages in melting soft magnetic alloys, high resistance alloys, platinum group alloys, heat-resistant, corrosion resistant, wear-resistant alloys and pure metals.
 
Induction furnace is usually divided into two categories: core induction furnace and coreless induction furnace. The core induction furnace has iron core through the inductor and power supply by power frequency power supply. It is mainly used for melting and insulation of all kinds of cast iron, brass, bronze, zinc and other metals. The electric efficiency is over 90%. It can use the waste furnace material, the smelting cost is low and the maximum furnace can reach 270 tons. The core free induction furnace has no iron core passing through the inductor, which is divided into industrial frequency induction furnace, three frequency doubling induction furnace, generator unit medium frequency induction furnace, thyristor medium frequency induction furnace and high frequency induction furnace.