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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">10.17073/0368-0797-2023-6-645-652</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2652</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>МЕТАЛЛУРГИЧЕСКИЕ ТЕХНОЛОГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METALLURGICAL TECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>Исследования процессов формирования микроструктуры мелющих шаров из рельсовой стали в зависимости от параметров закалочной среды</article-title><trans-title-group xml:lang="en"><trans-title>Formation of microstructure in rail steel grinding balls depending on quenching medium parameters</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4403-9006</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Уманский</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Umanskii</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Александрович Уманский, д.т.н., профессор кафедры металлургии черных металлов</p><p>Россия, 654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42</p></bio><bio xml:lang="en"><p>Aleksandr A. Umanskii, Dr. Sci. (Eng.), Prof. of the Chair of Ferrous Metal­lurgy</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007, Russian Federation</p></bio><email xlink:type="simple">umanskii@bk.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>Байдин</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Baidin</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вадим Викторович Байдин, соискатель степени к.т.н. кафедры металлургии черных металлов</p><p>Россия, 654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42</p></bio><bio xml:lang="en"><p>Vadim V. Baidin, Candidates for a degree of Сand. Sci. (Eng.) of the Chair of Ferrous Metallurgy</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007, Russian Federation</p></bio><email xlink:type="simple">5745426@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9712-3757</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Симачев</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Simachev</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Артем Сергеевич Симачев, к.т.н., доцент кафедры «Обработка металлов давлением и металловедение. ЕВРАЗ ЗСМК»</p><p>Россия, 654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42</p></bio><bio xml:lang="en"><p>Artem S. Simachev, Cand. Sci. (Eng.), Assist. Prof. of the Chair “Metal Forming and Metal Science. “EVRAZ ZSMK”</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007, Russian Federation</p></bio><email xlink:type="simple">simachev_as@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>Думова</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Dumova</surname><given-names>L. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Любовь Валерьевна Думова, соискатель степени к.т.н. кафед­ры металлургии черных металлов</p><p>Россия, 654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42</p></bio><bio xml:lang="en"><p>Lyubov’ V. Dumova, Candidates for a degree of Сand. Sci. (Eng.) of the Chair of Ferrous Metallurgy</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007, Russian Federation</p></bio><email xlink:type="simple">doumova@bk.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>Сафонов</surname><given-names>С. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Safonov</surname><given-names>S. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Олегович Сафонов, ассистент кафедры металлургии черных металлов</p><p>Россия, 654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42</p></bio><bio xml:lang="en"><p>Sergei O. Safonov, Assistant of the Chair of Ferrous Metallurgy</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007, Russian Federation</p></bio><email xlink:type="simple">sergey.safonov.1950@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Сибирский государственный индустриальный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Industrial University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>29</day><month>12</month><year>2023</year></pub-date><volume>66</volume><issue>6</issue><fpage>645</fpage><lpage>652</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Уманский А.А., Байдин В.В., Симачев А.С., Думова Л.В., Сафонов С.О., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Уманский А.А., Байдин В.В., Симачев А.С., Думова Л.В., Сафонов С.О.</copyright-holder><copyright-holder xml:lang="en">Umanskii A.A., Baidin V.V., Simachev A.S., Dumova L.V., Safonov S.O.</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/2652">https://fermet.misis.ru/jour/article/view/2652</self-uri><abstract><p>Проведены исследования формирования микроструктуры мелющих шаров из отбраковки рельсовой стали при их закалке в различных полимерных средах. На первом этапе, на основании исследований охлаждающей способности растворов полимеров «ПКМ» и «Термовит» при варьировании их концентраций и температуры построены кривые охлаждения мелющих шаров из рельсовой стали марки К76Ф. При концентрации указанных полимеров в водном растворе 2 и 4 % скорость охлаждения мелющих шаров из стали К76Ф практически идентична при температурах раствора 20 и 30 °С и значимо снижается в случае увеличении температуры раствора полимера до 40 °С. При этом наиболее заметное снижение скорости охлаждения характерно для полимера «ПКМ» при его концентрации на уровне 2 %. На втором этапе проведены металлографические исследования микроструктуры мелющих шаров из рельсовой стали К76Ф, закалка которых проводилась в лабораторных условиях с использованием полимеров «ПКМ» и «Термовит» с концентраций 2 – 4 % и температурой 20 – 40 °С. Использование раствора «ПКМ» для закалки шаров обеспечивает значительно более высокие качество микроструктуры и твердость термообработанных шаров по сравнению с применением полимера «Термовит». Варьирование концентрации и температуры полимерной закалочной среды «ПКМ» позволяет получать мелющие шары с различными эксплуатационными характеристиками, определяющими потенциальные области их применения. Закалка шаров в растворе указанного полимера с концентрацией 2 % и температурой 20 – 30 °С обеспечивает получение шаров с высокой твердостью (соответствующей IV группе твердости по ГОСТ 7524 – 2015), а использование для закалки раствора этого же полимера с концентрацией 4 % и температурой 20 – 30 °С создает возможность производства шаров с более низкой твердостью, но потенциально высокой ударной стойкостью.</p></abstract><trans-abstract xml:lang="en"><p>Studies of the formation of microstructure of grinding balls from the rejects of rail steel were carried out during their quenching in various polymer media. At the first stage, based on studies of the cooling capacity of solutions of polymers PCM and Thermovit with varying concentrations and temperatures, the authors constructed the cooling curves of grinding balls made of K76F rail steel. It was found that at concentration of these polymers in an aqueous solution of 2 and 4 %, cooling rate of grinding balls made of K76F steel is almost identical at solution temperatures of 20 and 30 °C and significantly decreases when the temperature of the polymer solution increases to 40 °C. At the same time, the most noticeable decrease in the cooling rate is characteristic of PCM polymer with its concentration at the level of 2 %. At the second stage, the authors carried out metallographic studies of the microstructure of grinding balls made of K76F rail steel, which were quenched in laboratory conditions using polymers PCM and Thermovit with concentrations of 2 – 4 % and temperature of 20 – 40 °C. As a result, it was determined that the use of the PCM solution for quenching balls provides a significantly higher quality of microstructure and hardness of heat-treated balls compared to the use of the Thermovit polymer. At the same time, varying the concentration and temperature of the PCM polymer quenching medium allows one to obtain grinding balls with different performance characteristics that determine the potential areas of their application. Thus, quenching of balls in a solution of the specified polymer with concentration of 2 % and temperature of 20 – 30 °C ensures the production of balls with high hardness (corresponding to the IV hardness group according to the state standard GOST 7524 – 2015), and the use of a solution of the same polymer with concentration of 4 % and temperature of 20 – 30 °С for quenching creates the possibility of producing balls with lower hardness, but potentially high impact resistance.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>микроструктура</kwd><kwd>мелющие шары</kwd><kwd>рельсовая сталь</kwd><kwd>полимеры</kwd><kwd>термообработка</kwd><kwd>закалочная среда</kwd><kwd>ударная стойкость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>microstructure</kwd><kwd>grinding balls</kwd><kwd>rail steel</kwd><kwd>polymers</kwd><kwd>heat treatment</kwd><kwd>quenching medium</kwd><kwd>impact resistance</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 22-29-20170, гранта Кемеровской области – Кузбасса.</funding-statement><funding-statement xml:lang="en">The research was supported by the Russian Science Foundation, grant No. 22-29-20170, and by the Kemerovo Region – Kuzbass.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Улегин К.А., Шведов К.Н., Бородин А.Н., Рубцов В.Ю. 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