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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">10.17073/0368-0797-2020-9-735-741</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-1983</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>ИННОВАЦИИ В МЕТАЛЛУРГИЧЕСКОМ ПРОМЫШЛЕННОМ И ЛАБОРАТОРНОМ ОБОРУДОВАНИИ, ТЕХНОЛОГИЯХ И МАТЕРИАЛАХ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INNOVATIONS IN METALLURGICAL INDUSTRIAL AND LABORATORY EQUIPMENT, TECHNOLOGIES AND MATERIALS</subject></subj-group></article-categories><title-group><article-title>Определение глубины и степени упрочнения поверхности прокатного валка при текстурировании его дробью</article-title><trans-title-group xml:lang="en"><trans-title>Estimation of depth and degree of mill roll surface hardening during grit texturing</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>Звягина</surname><given-names>Е. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Zvyagina</surname><given-names>E. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры «Машины и технологии обработки давлением и машиностроения»</p><p>455000, Челябинская обл., Магнитогорск, ул. Ленина, 38</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng), Assist. Professor of the Chair “Machinery and Metal Forming Technology and Mechanical Engineering”</p><p>Magnitogorsk</p></bio><email xlink:type="simple">zviagina_mmf@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>Огарков</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Ogarkov</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор кафедры «Машины и технологии обработки давлением и машиностроения»</p><p>455000, Челябинская обл., Магнитогорск, ул. Ленина, 38</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng), Professor of the Chair “Machinery and Metal Forming Technology and Mechanical Engineering”</p><p>Magnitogorsk</p></bio><email xlink:type="simple">ogarkovnikolai@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>Полякова</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Polyakova</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н, профессор кафедры технологий обработки материалов</p><p>455000, Челябинская обл., Магнитогорск, ул. Ленина, 38</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng), Professor of the Chair “Materials Processing Technologies”</p><p>Magnitogorsk</p></bio><email xlink:type="simple">m.polyakova@magtu.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>Сухова</surname><given-names>М. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Sukhova</surname><given-names>M. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>магистр кафедры «Машины и технологии обработки давлением и машиностроения»</p><p>455000, Челябинская обл., Магнитогорск, ул. Ленина, 38</p></bio><bio xml:lang="en"><p>MA Student of the Chair “Machinery and Metal Forming Technology and Mechanical Engineering”</p><p>Magnitogorsk</p></bio><email xlink:type="simple">suhova.mash@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Магнитогорский государственный технический университет им. Г.И. Носова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>G.I. Nosov Magnitogorsk State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>16</day><month>11</month><year>2020</year></pub-date><volume>63</volume><issue>9</issue><fpage>735</fpage><lpage>741</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Звягина Е.Ю., Огарков Н.Н., Полякова М.А., Сухова М.Д., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Звягина Е.Ю., Огарков Н.Н., Полякова М.А., Сухова М.Д.</copyright-holder><copyright-holder xml:lang="en">Zvyagina E.Y., Ogarkov N.N., Polyakova M.A., Sukhova M.D.</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/1983">https://fermet.misis.ru/jour/article/view/1983</self-uri><abstract><p>Представлен наиболее распространенный способ формирования микрогеометрии поверхности валков дрессировочных станов, обеспечивающий требуемую шероховатость холоднокатаной полосы (дробеметная обработка). Исследования по насечке поверхности проведены на промышленной установке «Виллибратор», металлографические исследования выполнены на оптическом микроскопе MEIJI 2700 и растровом электронном микроскопе JSM-6490LV. Выявлено измельчение структуры поверхностного слоя при взаимодействии материала валка с дробью. Представлены результаты теоретических и экспериментальных исследований по оценке упрочняющего действия дробеметной обработки (ДМО) на формируемый шероховатый слой прокатного валка. Для теоретического анализа процесса ДМО использован один из методов теории пластичности (метод нижней оценки). Для упрощения математических выкладок микровпадина валка аппроксимирована сферической поверхностью. Получена количественная оценка степени деформации и глубины упрочненного слоя, которые определяются скоростью дроби и твердостью поверхности валка. Глубина упрочненного слоя определяется размерами используемой дроби и в меньшей степени скоростью соударения дроби о поверхность валка и твердостью текстурируемой поверхности. При анализе литературных источников установлено, что увеличение твердости на одну единицу влечет повышение стойкости в среднем на 3 %. Применение ДМО позволяет сократить время перевалки валков дрессировочных станов на 6,0 – 10,5 % в зависимости от используемых режимов насечки валков дробью. Повышение твердости поверхностного слоя является следствием измельчения его структуры в процессе взаимодействия с дробью. Выявлено, что увеличение твердости поверхностного слоя приводит к повышению его износостойкости и усталостной прочности. Установлено, что при скорости 60 м/с твердость повышается примерно на 3,5 единицы.</p></abstract><trans-abstract xml:lang="en"><p>The paper presents shot blasting (SB) as the most common method of arrangement of temper mills rolls surface microgeometry, providing required roughness of the cold-rolled strip. The surface riffing studies were carried out at the Willibrator industrial unit; metallographic studies were performed using MEIJI 2700 optical microscope and JSM-6490LV scanning electron microscope. Refinement of the surface layer structure during interaction of the roll material with the grit was revealed. In the work the lower bound method, one of the methods of plasticity theory, is used for theoretical analysis of the SB process. To make computations easier, the roll microcave is approximated to spherical shape. Quantitative estimates of deformation degree and the depth of hardened layer were determined by speed of the grit and hardness of the roll surface. The depth of hardened layer is obtained by the size of used grit, and to a lesser extent, by the speed of grit impact on the roll surface and textured surface hardness. It has been searched out in literature that increase in hardness by one unit leads in average to 3 % increase in resistance. Thus, SB application allows reduction of time of rolls rehandling of temper mills by 6.0 – 10.5 %, depending on application modes of rolls riffing with grit. Analysis of microstructure have shown that increase in hardness of the surface layer is a consequence of refinement of its structure in process of interaction with the grit. It has been revealed that increase in hardness of the surface layer leads to an increase in its wear resistance and fatigue strength. The authors of the work have found that at speed of 60 m/s the hardness increases by 3.5 units.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>дробь</kwd><kwd>глубина упрочнения</kwd><kwd>степень упрочнения</kwd><kwd>дробеметная обработка</kwd><kwd>твердость</kwd><kwd>текстурируемая поверхность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fraction</kwd><kwd>depth and degree of hardening</kwd><kwd>shot blasting (SB)</kwd><kwd>hardness</kwd><kwd>textured surface</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">Bel’skii S.M., Mazur S.I., Mukhin Y.A., Goncharov A.I. Influence of the cross section of hot – rolled steel on the flatness of cold-rolled strip // Steel in Translation. 2013. Vol. 43. No. 5. P. 313 – 316.</mixed-citation><mixed-citation xml:lang="en">Bel’skii S.M., Mazur S.I., Mukhin Y.A., Goncharov A.I. 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