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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">vsgiu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Сибирского государственного индустриального университета</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of the Siberian State Industrial University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2304 - 4497</issn><issn pub-type="epub">2307-1710</issn><publisher><publisher-name>Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.57070/2304-4497-2024-3(49)-47-52</article-id><article-id custom-type="elpub" pub-id-type="custom">vsgiu-47</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>Раздел 2. Металлургия и материаловедение</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Section 2. Metallurgy and Materials Science</subject></subj-group></article-categories><title-group><article-title>ИССЛЕДОВАНИЕ ПРОЦЕССОВ ОБЕЗУГЛЕРОЖИВАНИЯ РЕЛЬСОВОЙ СТАЛИ Э90ХАФ ПРИ НАГРЕВЕ ПОД ПРОКАТКУ</article-title><trans-title-group xml:lang="en"><trans-title>INVESTIGATION OF DECARBURIZATION PROCESSES E90HAF RAIL STEEL WHEN HEATED FOR ROLLING</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>Пимахин</surname><given-names>Александр Васильевич</given-names></name><name name-style="western" xml:lang="en"><surname>Pimakhin</surname><given-names>Aleksandr V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ведущий специалист по дополнительному профессиональному образованию Центра дополнительного профессионального образования</p></bio><bio xml:lang="en"><p>a leading specialist in additional professional education at the Center for Additional Professional Education</p></bio><email xlink:type="simple">vestnicsibgiu@sibsiu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1310-1284</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Осколкова</surname><given-names>Татьяна Николаевна</given-names></name><name name-style="western" xml:lang="en"><surname>Oskolkova</surname><given-names>Tat’yana N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор кафедры металлургии черных металлов и химической технологии</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Prof. of the Chair of Ferrous Metallurgy and Chemical Technology</p></bio><email xlink:type="simple">oskolkovatatiana@yandex.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>Симачев</surname><given-names>Артем Сергеевис</given-names></name><name name-style="western" xml:lang="en"><surname>Simachev</surname><given-names>Artem S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры металлургии черных металлов и химической технологии</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Prof., Acting Head of the Chair of Ferrous Metallurgy and Chemical Technology</p></bio><email xlink:type="simple">simachev_as@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7985-5666</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Темлянцев</surname><given-names>Михаил Викторович</given-names></name><name name-style="western" xml:lang="en"><surname>Temlyantsev</surname><given-names>Mikhail V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор кафедры теплоэнергетики и экологии</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Professor of the Department of Thermal Power Engineering and Ecology</p></bio><email xlink:type="simple">uchebn_otdel@sibsiu.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>Темлянцева</surname><given-names>Елена Николаевна</given-names></name><name name-style="western" xml:lang="en"><surname>Temlyantseva</surname><given-names>Elena N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент, заведующая кафедрой теплоэнергетики и экологии</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Prof., Acting Head of the Chair “Thermal Power and Ecology”</p></bio><email xlink:type="simple">elena.temlyantseva@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8098-5895</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Запольская</surname><given-names>Екатерина Михайловна</given-names></name><name name-style="western" xml:lang="en"><surname>Zapol’skaya</surname><given-names>Ekaterina M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>преподаватель кафедры теплоэнергетики и экологии</p></bio><bio xml:lang="en"><p>Lecturer of the Department of Thermal Power Engineering and Ecology</p></bio><email xlink:type="simple">beloglazova-ekat@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><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Сибирский государственный индустриальный&#13;
университет</institution><country>Russian Federation</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>2024</year></pub-date><pub-date pub-type="epub"><day>02</day><month>02</month><year>2026</year></pub-date><volume>0</volume><issue>3</issue><fpage>47</fpage><lpage>52</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Пимахин А.В., Осколкова Т.Н., Симачев А.С., Темлянцев М.В., Темлянцева Е.Н., Запольская Е.М., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Пимахин А.В., Осколкова Т.Н., Симачев А.С., Темлянцев М.В., Темлянцева Е.Н., Запольская Е.М.</copyright-holder><copyright-holder xml:lang="en">Pimakhin A., Oskolkova T., Simachev A., Temlyantsev M., Temlyantseva E., Zapol’skaya E.</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://vestnik.sibsiu.ru/jour/article/view/47">https://vestnik.sibsiu.ru/jour/article/view/47</self-uri><abstract><p>Представлены результаты лабораторных исследований процессов обезуглероживания рельсовой стали марки Э90ХАФ при нагреве до температур 800 – 1250 °С. Глубину видимого обезуглероженного слоя стали определяли металлографическим методом. При проведении лабораторных экспериментов использовали образцы размером 10 ´ 10 ´ (2 ÷ 26) мм. Нагрев образцов проводили в электрической печи сопротивления СУОЛ-0,25.1/12,5-И1 с нагревателями из карбида кремния в атмосфере воздуха. Нагрев проводили до температур 800, 850, 900, 950, 1000, 1050, 1100, 1150, 1200 и 1250 °С и выдерживали при постоянной температуре в течение 10, 30 и 50 мин. Установлены и научно обоснованы температурные интервалы, для которых характерна различная динамика формирования обезуглероженного слоя. В температурном интервале 800 – (1000 ÷ 1050) °С наблюдается увеличение глубины видимого обезуглероженного слоя от 0 до 0,15 ÷ 0,24 мм. При температурах (1000 ÷ 1050) – 1200 °С и времени выдержки 30 и 50 мин происходит формирование обезуглероженного слоя глубиной до 0,57 и 0,72 мм, увеличение температур более 1200 – 1250 °С сопровождается его снижением до 0,40 и 0,52 мм. Для времени выдержки 10 мин при температурах 1200 – 1250 °С глубина обезуглероженного слоя стабилизируется на уровне 0,27 мм. Полученные данные рекомендуются для разработки металлосберегающих температурных режимов нагрева непрерывнолитых заготовок в методических печах при производстве рельсовой продукции с регламентированной глубиной видимого обезуглероженного слоя.</p></abstract><trans-abstract xml:lang="en"><p>The results of laboratory studies of decarburization processes of E90HAF grade rail steel when heated to temperatures of 800 – 1250 °C. are presented. The depth of the visible decarbonized steel layer was determined by metallographic method. During laboratory experiments, samples with a size of 10-10 (2 ÷ 26) mm were used. The samples were heated in an electric furnace of resistance SUOL-0.25.1/12.5-I1 with silicon carbide heaters in an air atmosphere. Heating was carried out to temperatures of 800, 850, 900, 950, 1000, 1050, 1100, 1150, 1200 and 1250 °C and kept at a constant temperature for 10, 30 and 50 minutes. Temperature ranges have been established and scientifically substantiated, for which different dynamics of the formation of a decarbonized layer are characteristic. In the temperature range of 800 – (1000 ÷ 1050) °C, an increase in the depth of the visible carbonized layer is observed from 0 to 0.15 – 0.24 mm. At temperatures (1000 ÷ 1050) – 1200 ° C and a holding time of 30 and 50 minutes. A decarbonized layer is formed with a depth of up to 0.57 and 0.72 mm, an increase in temperatures of more than 1200 – 1250 °C is accompanied by its decrease to 0.4 and 0.52 mm. For a holding time of 10 minutes at temperatures of 1200 – 1250 °C, the depth of the decarbonized layer is stabilized at 0.27 mm. The obtained data are recommended for the development of metal-saving temperature regimes for heating continuously cast blanks in methodical furnaces in the production of rail products with a regulated depth of the visible decarbonized layer.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>рельсовая сталь</kwd><kwd>нагрев под прокатку</kwd><kwd>обезуглероживание стали</kwd><kwd>исследование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>rail steel</kwd><kwd>heating for rolling</kwd><kwd>decarburization of steel</kwd><kwd>study</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">Karl-Otto Edel, Grigori Budnitzki, Thomas Schnitzer. Schienenfehler 1. Beanspruchung und Schädigung von Eisenbahnschienen. 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