blackmetИзвестия высших учебных заведений. Черная МеталлургияIzvestiya. Ferrous Metallurgy0368-07972410-2091National University of Science and Technology "MISIS"10.17073/0368-0797-2015-10-721-727blackmet-738Research ArticleРЕСУРСОСБЕРЕЖЕНИЕ В ЧЕРНОЙ МЕТАЛЛУРГИИRESOURCE SAVING IN FERROUS METALLURGYСОВЕРШЕНСТВОВАНИЕ ТЕХНОЛОГИИ РАСКИСЛЕНИЯ И ВНЕПЕЧНОЙ ОБРАБОТКИ РЕЛЬСОВОЙ ЭЛЕКТРОСТАЛИ С ЦЕЛЬЮ ПОВЫШЕНИЯ КАЧЕСТВА РЕЛЬСОВОГО ПРОКАТАIMPROVED DEOXIDATION TECHNOLOGIES AND SECONDARY TREATMENT OF RAIL ELECTRIC STEEL IN ORDER TO IMPROVE THE QUALITY OF RAILWAY ROLLINGКозыревН. А.KozyrevN. A.

д.т.н., заведующий кафедрой материаловедения, литейного и сварочного производства

Dr. Sci. (Eng.), Professor, Head of the Chair “Materials, Foundry and Welding Production”

kozyrev_na@mtsp.sibsiu.ruПротопоповЕ. В.ProtopopovE. V.

д.т.н., профессор, ректор

Dr. Sci. (Eng.), Professor, Rector

УманскийА. А.UmanskiiA. A.

к.т.н., доцент кафедры металлургии черных металлов

Cand. Sci. (Eng.), Assist. Professor of the Chair of Ferrous Metallurgy

БойковД. В.BoikovD. V.

к.т.н., начальник сталеплавильного отдела

Cand. Sci. (Eng.), Head of the Steel-Making Department

Сибирский государственный индустриальный университет (654007, Россия, Кемеровская обл., г. Новокузнецк, ул. Кирова, 42)РоссияSiberian State Industrial University (42, Kirova str., Novokuznetsk, Kemerovo Region, 654007, Russia)Russian FederationОАО «ЕВРАЗ – объединенный Западно-Сибирский металлургический комбинат» (654043, Россия, Кемеровская обл., г. Новокузнецк, шоссе Космическое, 16)РоссияOJSC “EVRAZ – Joint West Siberian Metallurgical Plant” (16, Kosmicheskoe route, Novokuznetsk, Kemerovo Region, 654043, Russia)Russian Federation2015281120155810721727Copyright © Козырев Н.А., Протопопов Е.В., Уманский А.А., Бойков Д.В., 20152015Козырев Н.А., Протопопов Е.В., Уманский А.А., Бойков Д.В.Kozyrev N.A., Protopopov E.V., Umanskii A.A., Boikov D.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://fermet.misis.ru/jour/article/view/738

Исследованиями, проведенными в условиях электросталеплавильного цеха ОАО «ЕВРАЗ ЗСМК», установлено, что увеличение длительности продувки рельсовой стали инертным газом при обработке на агрегате ковш – печь с 63 до 122 мин. способствует уменьшению количества оксидных неметаллических включений, при этом остальные контролируемые параметры качества готовых рельсов не ухудшаются. Промышленными экспериментами доказана технико-экономическая эффективность использования силикомарганца марки FeMnSi30HP вместо силикомарганца марки МнС18 для раскисления рельсовой стали в условиях электросталеплавильного цеха ОАО «ЕВРАЗ ЗСМК». Установлено повышение степени сквозного усвоения углерода и кремния на 4 и 13 % соответственно. Механические свойства и макроструктура рельсов, полученных при использовании опытной технологии, находятся на уровне плавок текущего производства. По полученным расчетным данным экономическая эффективность от использования нового ферросплава марки FeMnSi30HP составила 13,99 и 32,64 руб./т для рельсов категорий Т1 и НЭ соответственно.

The studies conducted under the conditions of the electric-furnacemelting shop of “EVRAZ ZSMK” have shown that the increase of the duration of the rail steel blowing with an inert gas, when processingat the aggregate “ladle-furnace” from 63 to 122 min., reduces the number of oxide non-metallic inclusions; while the remaining controlled quality parameters of fi nished rails are not worsen. Production experiments have proved the technical and economic efficiency of silicomanganese of FeMnSi30HP brand instead of silicomanganese of MnS18 brand for deoxidation of rail steel under the conditions of the electric-furnace melting shop of “EVRAZ ZSMK”. An increase in the degree of pass-through assimilation of carbon and silicon has been found (by 4 % and 13 % respectively). The mechanical properties and microstructure of rails, obtained when using experimental techniques, are at the current melting production. According to the obtained calculated data from the use of cost-effectiveness of a new brand of ferroalloy FeMnSi30HP is 13.99-32.64 rubles/t for the rails of different categories.

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The authors declare that there are no conflicts of interest present.