furnace in foundry
Different types of furnace that foundries use

By vr foundries on 7-March-2019

If you have outsourced job work to any foundry, you must have a basic understanding of the types of furnaces in a foundry. You may think it is not necessary, but remember we use many items that are manufactured by melting the metals in the furnace on an everyday basis.

Electric Arc Furnace:
Heating charged material using electric arc is done in an electric arc furnace. This furnace is applicable for producing secondary steel. Charging is achieved through alloy metals, alloys, ingots and flux components. Electrical charge is passed through three electrodes, thereby forming an arc between the metal charge and electrodes. To eliminate oxidation of metal and excessive generation of heat, fluxes slag is present. Once this process is over, molten metal is then poured by raising the metal electrodes.     

Cupola Furnace:
This is the most common type of furnace. It is a long vertical furnace that comes with an opening at the top. The molten metal is removed every time from a hinged door built at the bottom of the furnace. The process of melting involves the layering of the furnace with limestone and heat with the passage of heat through it. Once the heating is done, the molten metal is produced which is removed from the furnace via the bottom hinge door.

Induction furnace:
In Induction furnace, copper coils are present on the exterior walls of the furnace through which a stream of current is passed every time. The passage of current through the charged metal, as a result, enables the metal to get heated.

These are some of the important furnace types used extensively in cast iron foundries in the country, though there are other large commercial types that are optimal for the purpose of metal melting which depends on your actual requirements and functions like heating materials, changing the shape and properties and casting.