Electrical Resistance Melting Furnace

(also electric resistance furnace), an electric furnace in which heat is generated by conductors that offer resistance to the passage of a current through them. Resistance furnaces are widely used in heat treatment, for heating prior to pressure shaping, and to dry or melt materials.The resistance furnaces or ovens are used for heat treatment of metals, commercial or domestic heating, pottery work, etc. The different elements of the furnace can be energies from DC or AC supply of the rated voltage. The star-delta formation provides a wide variation of the temperature.