Regarding induction furnaces, the editor of Judian will summarize the classification of induction furnaces for you today.
Induction furnaces are classified according to the structure of the furnace body, and there are two types: crucible type and groove type.
Crucible type is also called coreless induction furnace. The grooved type is also called a cored induction furnace.
Crucible coreless induction furnaces can be divided into power frequency furnaces and intermediate frequency furnaces according to different frequencies.
According to different structures, grooved cored induction furnaces can be divided into vertical furnaces and horizontal furnaces.
In the field of foundry, induction furnaces are used for three purposes: melting, holding and pouring. According to these different uses, electric furnaces can be divided into: melting furnaces, holding furnaces and pouring furnaces.
Power frequency crucible induction furnace is mainly used for smelting cast iron and non-ferrous metals. Due to the large electromagnetic stirring force, the life of the furnace lining is very short during steelmaking. Therefore, it is not suitable for steelmaking unless the life of the refractory material can be solved.
Coreless induction furnaces are also not suitable for non-ferrous metals with strict gas content requirements. When the power frequency crucible induction furnace is used as a holding furnace, the induction coil is short, about 1/4 of the crucible height.
The intermediate frequency electric furnace is suitable for the smelting and heat preservation of steel and non-ferrous metals. Compared with the power frequency crucible induction furnace, the advantages of the intermediate frequency crucible induction furnace are high power density, convenient melting, no need for a three-phase balance device, and the furnace body is small in size under the same production conditions.
The medium frequency crucible induction furnace can empty the molten steel, which is convenient for changing metal types.
Crucible induction furnace is characterized by simple shape of furnace lining, convenient furnace construction, easy inspection and repair of furnace lining, and can be started and stopped at any time.
Coreless induction furnaces are mainly used for smelting and heat preservation of non-ferrous metals such as copper, aluminum and zinc, and heat preservation of cast iron, as well as pouring furnaces on pouring lines.
The characteristic of the cored induction furnace is that the electric efficiency and power factor of the furnace are higher than those of the crucible induction furnace. The disadvantage is that the refractory material in the groove part is not easy to inspect and repair, and it is also necessary to conduct current insulation when not in production, and it is difficult to change the metal type. Therefore, the grooved induction furnace is suitable for the production of a single variety.
This is what we share today about the classification of induction furnaces, I hope it can be helpful to you.
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