Improvement of the out-of-furnace steel treatment technology for improving its mechanical properties

The problem of increasing the competitiveness technology today is largely determined by quality manufacturing large-sized cast billets for their supporting systems. Many factors are involved in forming service properties a casting. Each factor important and affects resulting presence "cold" slag does not allow refining processes to be fully realized during induction melting steel. Therefore, attempts achieve same results steel without additional furnace treatment as electric arc do always lead success. In recent years, various methods out-of-furnace processing have been developed, which make it possible eliminate certain disadvantages melting. One them modification bucket with rare earth metals (REM). Additional ladle along REM also allows further improvement quality. Currently, REM, high affinity oxygen, sulfur, nitrogen, non-ferrous metals, other impurities, widely used production. Studies carried out improve its mechanical properties. effect alkaline master alloys on impact strength contamination index non-metallic inclusions cold-resistant shown.