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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2020-8-665-673</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-1960</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ИНФОРМАЦИОННЫЕ ТЕХНОЛОГИИ И АВТОМАТИЗАЦИЯ В ЧЕРНОЙ  МЕТАЛЛУРГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INFORMATION TECHNOLOGIES AND AUTOMATIC CONTROL IN FERROUS METALLURGY</subject></subj-group></article-categories><title-group><article-title>Совершенствование метода моделирования процесса прокатки кольцевых заготовок на радиально-осевом кольцепрокатном стане</article-title><trans-title-group xml:lang="en"><trans-title>Modeling of ring billets rolling on radial-axial ring-rolling mill</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Снитко</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Snitko</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., доцент, заведующий кафедрой «Обработка металлов давлением»</p><p>83001, Донецк, ул. Артема, 58</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Professor, Head of the Chair “Metal Forming”</p><p>Donetsk</p></bio><email xlink:type="simple">snitko_sa@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Яковченко</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakovchenko</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор кафедры «Обработка металлов давлением»</p><p>83001, Донецк, ул. Артема, 58</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Professor of the Chair “Metal Forming”</p><p>Donetsk</p></bio><email xlink:type="simple">mond1991@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пилипенко</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pilipenko</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры «Обработка металлов давлением»</p><p>83001, Донецк, ул. Артема, 58</p></bio><bio xml:lang="en"><p>Postgraduate of the Chair “Metal Forming”</p><p>Donetsk</p></bio><email xlink:type="simple">VictorPilipenkoDNTU@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ивлева</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivleva</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>прикладной программист</p><p>83001, Донецк, бульвар Пушкина, 12</p></bio><bio xml:lang="en"><p>Application Programmer</p><p>Donetsk</p></bio><email xlink:type="simple">ivl22@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Донецкий национальный технический университет</institution><country>Украина</country></aff><aff xml:lang="en"><institution>Donetsk National Technical University</institution><country>Ukraine</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Частное научно-производственное предприятие «МОНД»</institution><country>Украина</country></aff><aff xml:lang="en"><institution>Private research and production enterprise “MOND”</institution><country>Ukraine</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>08</day><month>10</month><year>2020</year></pub-date><volume>63</volume><issue>8</issue><fpage>665</fpage><lpage>673</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Снитко С.А., Яковченко А.В., Пилипенко В.В., Ивлева Н.И., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Снитко С.А., Яковченко А.В., Пилипенко В.В., Ивлева Н.И.</copyright-holder><copyright-holder xml:lang="en">Snitko S.A., Yakovchenko A.V., Pilipenko V.V., Ivleva N.I.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://fermet.misis.ru/jour/article/view/1960">https://fermet.misis.ru/jour/article/view/1960</self-uri><abstract><p>На базе радиально-осевой прокатки кольцевых заготовок созданы ресурсосберегающие технологии обработки металлов д нием. Определение рациональных параметров этого процесса при освоении новых профилей является актуальной научно-технической задачей. Метод трехмерного конечно-элементного моделирования процесса является наиболее эффективным инструментом совершенствования технологических режимов процесса прокатки колец. Однако, как показала практика, метод конечно-элементного моделирования требует адаптации применительно к каждому процессу обработки металлов давлением. Этому вопросу и посвящена настоящая работа. Обоснована целесообразность использования для конечно-элементного моделирования процессов прокатки колец зависимости для расчета напряжения течения металла, разработанной на базе теории, учитывающей химический состав конструкционной углеродистой стали, ее температуру, скорость деформации, накопленную деформацию, а также процессы динамического преобразования структуры металла при горячей прокатке. Создана компьютерная программа автоматизированного определения параметров зависимости. Выполнен анализ точности полученной зависимости по отношению к экспериментальным данным. В ходе этих расчетов использовали метод автоматизированного определения напряжения течения металла путем сплайн-интерполяции экспериментальных данных, входящих в компьютерную базу цифровой информации для конкретной марки стали. Средняя относительная погрешность расчетных значений напряжения течения металла относительно экспериментальных составила 8 %. Предложен усовершенствованный метод выполнения расчетов параметров процесса прокатки кольцевых заготовок и выхода на требуемую скорость роста диаметра кольца. Метод реализуется в системе конечно-элементного моделирования, который аналогичен способу работы системы управления кольцепрокатным станом при решении этой же задачи (выхода на требуемую скорость роста диаметра кольца) при осуществлении соответствующей прокатки на практике. При вычислении величин обжатий использовали итерационный процесс и метод половинного деления. Средние отклонения расчетных величин параметров процесса прокатки кольцевых заготовок от экспериментальных не превысили 12,4 %, что дает возможность применения предложенного подхода для изучения закономерностей процесса прокатки колец и совершенствования технологии их прокатки.</p></abstract><trans-abstract xml:lang="en"><p>On the basis of radial-axial rolling of ring billets, resource-saving technologies for metal forming have been created. Determining the rational parameters of this process is the actual scientific and technical task at development of new profiles. The method of three-dimensional finite element modeling is the most effective tool for improving the technological conditions of ring rolling process. However, as practice has shown, the finite element modeling method requires adaptation to each process of metal forming. This is the subject of the present work. The expediency of using dependency for calculating the metal flow stress for finite-element modeling of ring-rolling processes is substantiated. This dependence was developed on the basis of a theory that takes into account the chemical composition of structural carbon steel, its temperature, strain rate, accumulated deformation, and also the processes of dynamic transformation of the metal structure during hot rolling. A computer program for automated determination of dependency parameters has been developed. The analysis of the accuracy of the obtained dependence was performed in relation to the experimental data. In the course of these calculations, the method of automated determination of the metal flow stress was used by spline interpolation of the experimental data included in the computer database of digital information for a particular steel grade. The average relative error of calculated values of the metal flow stress was 8 % relative to the experimental ones. An improved method is proposed for calculating the parameters of ring billets rolling and reaching the required growth rate of the ring diameter implemented in a finite element modeling system, which is similar to the way the control system of the ring-rolling mill works in solving the same problem (reaching the required growth rate of the ring diameter) when implemented appropriate rolling in practice. When calculating the size of the compression, the iterative process and the method of half division were used. The average deviations of calculated values of the parameters of ring billets rolling from the experimental did not exceed 12.4 %, which makes it possible to apply the proposed approach to study the patterns of the rings rolling process and to improve the rolling technology.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>прокатка кольцевой заготовки</kwd><kwd>кольцепрокатный стан</kwd><kwd>метод конечно-элементного моделирования</kwd><kwd>напряжение течения металла</kwd><kwd>промышленный эксперимент</kwd><kwd>скорость роста диаметра кольца</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ring billet rolling</kwd><kwd>ring-rolling mill</kwd><kwd>finite element modeling method</kwd><kwd>metal flow stress</kwd><kwd>industrial experiment</kwd><kwd>growth rate of ring diameter</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Gorbatyuk S.M., Kochanov A.V. 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