The process of steel making in an induction furnace involves several steps:
1. Power is supplied through power cables to the induction coil.
2. The induction coil generates a rapidly alternating magnetic field.
3. The alternating magnetic field induces electric currents, known as eddy currents, in the metallic charge.
4. The eddy currents flow through the resistance of the material and generate heat through Joule heating.
5. The heat generated by the eddy currents melts the metallic charge, transforming it into liquid steel.
6. Once the liquid steel reaches a temperature of around 1650°C, it is tapped into a steel ladle for further processing.
Induction furnaces are commonly used in steel manufacturing due to their efficiency and simplicity of operation. There are two main types of induction furnaces: coreless and channel. Coreless induction furnaces do not have a core and rely on the electromagnetic field generated by the induction coil. Channel induction furnaces have a channel or trough where the metallic charge is placed.
The advantages of steel making through the induction furnace route include the ease of operation, excellent product quality, and lower oxidation losses. However, one of the limitations is the lack of refining capacity, which requires careful selection of the raw materials used.
Other types of steel melting furnaces include crucible furnaces, cupola furnaces, and electric arc furnaces. Crucible furnaces are simple furnaces made of refractory materials and are often used by jewelry makers and hobbyists. Cupola furnaces are chimney-like furnaces filled with coal-coke and additives, but they have been largely phased out in favor of induction furnaces. Electric arc furnaces use electrodes to pass an electrical current through the metal and are commonly used for large slabs and beams.
If you are looking for a steel melting induction furnace near you, you can search for steel manufacturers or foundries in your local area.
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