Effect of slag composition on desulphurization of steel prepared by induction melting & electroslag remelting

摘要

With the developments in nuclear & aerospace engineering there is a need for quality steels with improved properties. Steels prepared from conventional routes are not suitable in critical applications where cleaner steels are required. The conventional casting shows inclusions, porosities, segregation and coarse grain size. Quality steels are prepared by secondary refining processes like Electroslag Remelting (ESR) & Vacuum Arc Remelting (VAR). These processes produce ingots free from non metallic inclusions, free from porosity, free from segregation and with good surface finish. In the ESR process the consumable electrode is passed into a superheated liquid slag. The heat for the process is produced by current passing between the mould base and the electrode through the slag.