Special Melting-ElectroSlag Remelting Process

Due to the sensitive industries such as oil and power related industries and sensitivity of steel structures and alloys employed in these industries, the need for production of steels free of impurities and segregation has necessitated, therefore re-melting methods such as ElectroSlag Remelting (ESR) and Vacuum Arc Remelting (VAR) are used for the production of such steels. Electroslag remelting is a process of remelting a consumable electrode utilizing the heat generated by an electric current passing through a molten slag between the electrode and the solidifying ingot. The consumable electrods are as cast or forged cylindrical parts made of an alloy to be remelt. An electroslag remelting process starts when the lower tip of a consumable electrode is immersed into a pool of molten slag. Close control of all remelting parameters is required for reproducible production of homogeneous ingots. This survey was done to study effective parameters on electroslag remelting process and its effects on structural and mechanical properties of steels.