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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Frontier Materials &amp; Technologies</journal-id><journal-title-group><journal-title xml:lang="en">Frontier Materials &amp; Technologies</journal-title><trans-title-group xml:lang="ru"><trans-title>Frontier Materials &amp; Technologies</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2782-4039</issn><issn publication-format="electronic">2782-6074</issn><publisher><publisher-name xml:lang="en">Togliatti State University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">908</article-id><article-id pub-id-type="doi">10.18323/2782-4039-2024-1-67-6</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">The study of end milling temperature of low-alloy steel in coarse-grained and ultrafine-grained states</article-title><trans-title-group xml:lang="ru"><trans-title>Исследование температуры концевого фрезерования низколегированной стали в крупнозернистом и ультрамелкозернистом состояниях</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6298-1068</contrib-id><name-alternatives><name xml:lang="en"><surname>Rastorguev</surname><given-names>Dmitry A.</given-names></name><name xml:lang="ru"><surname>Расторгуев</surname><given-names>Дмитрий Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Engineering), assistant professor of Chair “Equipment and Technologies of Machine Building Production”</p></bio><bio xml:lang="ru"><p>кандидат технических наук, доцент кафедры «Оборудование и технологии машиностроительного производства»</p></bio><email>rast_73@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7465-650X</contrib-id><name-alternatives><name xml:lang="en"><surname>Sevastyanov</surname><given-names>Aleksandr A.</given-names></name><name xml:lang="ru"><surname>Севастьянов</surname><given-names>Александр Александрович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>postgraduate student of Chair “Equipment and Technologies of Machine Building Production”</p></bio><bio xml:lang="ru"><p>аспирант кафедры «Оборудование и технологии машиностроительного производства»</p></bio><email>a.sevastyanov@tltsu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Klevtsov</surname><given-names>Gennady V.</given-names></name><name xml:lang="ru"><surname>Клевцов</surname><given-names>Геннадий Всеволодович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Doctor of Sciences (Engineering), professor of Chair “Nanotechnologies, Materials Science and Mechanics”</p></bio><bio xml:lang="ru"><p>доктор технических наук, профессор кафедры «Нанотехнологии, материаловедение и механика»</p></bio><email>klevtsov11948@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Togliatti State University</institution></aff><aff><institution xml:lang="ru">Тольяттинский государственный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-03-29" publication-format="electronic"><day>29</day><month>03</month><year>2024</year></pub-date><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>61</fpage><lpage>69</lpage><history><date date-type="received" iso-8601-date="2024-03-29"><day>29</day><month>03</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Rastorguev D.A., Sevastyanov A.A., Klevtsov G.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Расторгуев Д.А., Севастьянов А.А., Клевцов Г.В.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Rastorguev D.A., Sevastyanov A.A., Klevtsov G.V.</copyright-holder><copyright-holder xml:lang="ru">Расторгуев Д.А., Севастьянов А.А., Клевцов Г.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://vektornaukitech.ru/jour/article/view/908">https://vektornaukitech.ru/jour/article/view/908</self-uri><abstract xml:lang="en"><p>The paper presents the results of the study of the end milling temperature of low-alloy steel depending on the cutting modes and the type of crystalline structure. The experiment was carried out on a PROMA FHV-50PD universal milling machine. The blanks were processed using a 12-12D-30C-75L-4F HRC55 carbide milling cutter. No cooling was used during processing. The obtained data were statistically analyzed to identify the dependence of the end milling temperature of low-alloy steel on the processing modes and the steel crystalline structure. When creating a mathematical model of cutting temperature, the authors carried out a bootstrap analysis to identify the significance of the parameters of the processing modes. The mathematical model was chosen using the Akaike informative criterion. It was found that mathematical models of the temperature dependence on processing modes for both types of crystalline structure include the cutting depth in the second power. At the same time, for steel in an ultrafine-grained state, both the cutting depth and the feed are statistically significant. It was not possible to detect the influence of cutting speed on temperature in the studied range of processing modes. Thus, when milling this group of materials, the force component primarily determined by the cutting depth exerts the predominant influence on the temperature regime. The level of cutting temperature when processing steel in an ultrafine-grained state is generally higher than when processing steel in a coarse-grained state, which should be associated with the increased physical and mechanical properties of steel with an ultrafine-grained crystalline structure.</p></abstract><trans-abstract xml:lang="ru"><p>Представлены результаты исследования температуры концевого фрезерования низколегированной стали в зависимости от режимов резания и типа кристаллической структуры. Эксперимент проводился на универсальном фрезерном станке PROMA FHV-50PD. Обработку заготовок осуществляли твердосплавной фрезой 12-12D-30C-75L-4F HRC55. В ходе обработки охлаждение не использовалось. Полученные данные подвергались статистическому анализу с целью выявления зависимости температуры концевого фрезерования низколегированной стали от режимов обработки и кристаллической структуры стали. При создании математической модели температуры резания проводился бутстреп-анализ для определения значимости параметров режимов обработки. Выбор математической модели производился с использованием информационного критерия Акаике. Обнаружено, что математические модели зависимости температуры от режимов обработки для обоих типов кристаллической структуры включают глубину резания во второй степени. При этом для стали в ультрамелкозернистом состоянии статистически значима не только глубина резания, но и подача. Влияния скорости резания на температуру в исследуемом диапазоне режимов обработки обнаружить не удалось. Таким образом, при обработке фрезерованием данной группы материалов преобладающее влияние на температурный режим оказывает силовая составляющая, в первую очередь определяемая глубиной резания. Уровень температуры резания при обработке стали в ультрамелкозернистом состоянии в целом выше, чем при обработке стали в крупнозернистом состоянии, что должно быть связано с повышенными физико-механическими свойствами стали с ультрамелкозернистой кристаллической структурой.</p></trans-abstract><kwd-group xml:lang="en"><kwd>material cutting</kwd><kwd>coarse-grained (CG) and ultrafine-grained (UFG) structure</kwd><kwd>low-alloy steel</kwd><kwd>cutting temperature</kwd><kwd>end milling</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>резание материалов</kwd><kwd>крупнозернистая (КЗ) и ультрамелкозернистая (УМЗ) структура</kwd><kwd>низколегированная сталь</kwd><kwd>температура резания</kwd><kwd>концевое фрезерование</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The authors thank Professor R.Z. Valiev, the Director of the Research Institute of Physics of Advanced Materials at Ufa University of Science and Technology (Ufa), for kindly provided materials for the study. The work was financially supported by the Russian Science Foundation (project No. 20-69-47059, https://rscf.ru/project/20-69-47059/).</funding-statement><funding-statement xml:lang="ru">Авторы благодарят директора НИИ ФПМ при Уфимском университете науки и технологий (г. Уфа) профессора Р.З. Валиева за любезное предоставление материалов для исследования. Работа выполнена при финансовой поддержке РНФ (проект № 20-69-47059, https://rscf.ru/project/20-69-47059/).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Elias C.N., Meyers M.A., Valiev R.Z., Monteiro S.N. Ultra fine grained titanium for biomedical applications: an overview of performance. Journal of Materials Research and Technology, 2013, vol. 2, no. 4, pp. 340–350. DOI: 10.1016/j.jmrt.2013.07.003.</mixed-citation><mixed-citation xml:lang="ru">Elias C.N., Meyers M.A., Valiev R.Z., Monteiro S.N. 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