Abstract
Research in the electrosmelting shop at OAO EVRAZ ZSMK indicates that, if inert gas is injected into molten rail steel in the ladle for 122 min, rather than 63 min, the quantity of nonmetallic oxide inclusions may be reduced, without impairing overall rail quality. Industrial experiments show that replacing MnS18 silicomanganese with FeMnSi30HP silicomanganese in the reduction of rail steel is economically effective in the electrosmelting shop at OAO EVRAZ ZSMK. The assimilation of carbon and silicon is increased by 4 and 13%, respectively. The mechanical properties and macrostructure of rails obtained by this experimental technology match those of the steel currently produced. According to the calculation results, the use of FeMnSi30HP ferroalloy provides savings of 13.99 and 32.64 rub/t for rails of category T1 and NE, respectively.
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