blackmetИзвестия высших учебных заведений. Черная МеталлургияIzvestiya. Ferrous Metallurgy0368-07972410-2091National University of Science and Technology "MISIS"10.17073/0368-0797-2015-5-322-327blackmet-663Research ArticleМЕТАЛЛУРГИЧЕСКИЕ ТЕХНОЛОГИИMETALLURGICAL TECHNOLOGIESТЕОРИЯ И ПРАКТИКА РЕСУРСОСБЕРЕГАЮЩИХ ТЕХНОЛОГИЙ ПРОИЗВОДСТВА СОРТОВОГО ПРОКАТА НА ДЕЙСТВУЮЩИХ НЕПРЕРЫВНЫХ СТАНАХTHEORY AND PRACTICE OF RESOURCE-SAVING TECHNOLOGIES OF MILL BAR PRODUCTION AT THE OPERATING CONTINUOUS ROLLING MILLSФастыковскийР. А.FastykovskiiR. A.

д.т.н., профессор кафедры обработки металлов давлением и металловедения. ЕВРАЗ ЗСМК

Dr. Sci. (Eng.), Professor of the Chair of ferrous metallurgy “Metal Forming and Metal Science, OJSC “EVRAZ ZSMK”

УманскийА. А.UmanskiiA. A.

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

Cand. Sci. (Eng.), Assist. Professor of the Chair of ferrous metallurgy

umanskii@bk.ruСибирский государственный индустриальный университет 654007, Россия, Кемеровская обл., г. Новокузнецк, ул. Кирова, 42РоссияSiberian State Industrial University 42, Kirova str., Novokuznetsk, Kemerovo Region, 654007, RussiaRussian Federation201510062015585322327Copyright © Фастыковский Р.А., Уманский А.А., 20152015Фастыковский Р.А., Уманский А.А.Fastykovskii R.A., Umanskii A.A.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/663

На основании результатов моделирования процессов прокатки в сортовых калибрах простой формы определены и экспериментально подтверждены закономерности течения поверхностных слоев заготовок и их влияние на формирование напряженно-деформированного состояния металла в процессе прокатки. С учетом сформулированных рекомендаций разработана и прошла опытно-промышленное опробование новая калибровка валков черновой группы клетей непрерывного мелкосортного стана 250-2 ОАО «ЕВРАЗ ЗСМК», использование которой позволило увеличить выход годного при производстве проката из качественных конструкционных сталей на 3 %. Проведена оценка повышения эффективности производства за счет увеличения производительности при внедрении процесса прокатки-разделения в условиях действующего непрерывного мелкосортного стана 250-1 ОАО «ЕВРАЗ ЗСМК». Предложена методика для определения кратности разделения в зависимости от необходимого приращения производительности, приведены рекомендации по расчету скоростного режима в черновых и чистовых клетях непрерывных станов, фактические данные по изменению суммарных коэффициентов вытяжки и скоростных условий по группам клетей при получении арматурных профилей № 10, № 12 и № 14.

Based on the modeling results of the processes of high-qualityrolling in calibers of a simple form, the flow patterns of surface layers of the blanks and their influence on the formation of stress-strain state of the metal in the rolling process have been determined and confirmed experimentally. Subject to the formed recommendations a new calibration of rolls of roughing mill of continuous light-section mill 250-2 of OJSC «EVRAZ ZSMK» has been developed and passed the trial approbation. Its use has increased the yield in the production of high-quality rolled structural steel by 3 %. The evaluation to improve the production efficiency by increasing productivity in the implementation process of rolling-separation under the existing continuous light-section mill 250-1 of OJSC «EVRAZ ZSMK» has been conducted. A technique for determining the multiplicity of separation depending on the desired performance increments has been offered, as well as provided the guidance on the calculation of the speed limit in the roughing and finishing stand continuous mill, the actual data on the change of the total reduction ratio and speed conditions on groups stands in the preparation of rebars no. 10, no. 12, no. 14.

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