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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">10.17073/0368-0797-2025-6-613-620</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2999</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>Влияние кольцевых швов на напряженно-деформированное состояние в цилиндрической керамической оболочковой форме при затвердевании в ней стальной отливки</article-title><trans-title-group xml:lang="en"><trans-title>Effect of annular seams on stress-strain state in cylindrical ceramic shell mold during solidification of a steel casting in it</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9594-4068</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Евстигнеев</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Evstigneev</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Иванович Евстигнеев, д.т.н., профессор, главный научный сотрудник Управления научно-исследовательской деятельностью</p><p>Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр. Ленина, 27</p></bio><bio xml:lang="en"><p>Aleksei I. Evstigneev, Dr. Sci. (Eng.), Prof., Chief Researcher of the Department of Research Activities</p><p>27 Lenina Ave., Komsomolsk-on-Amur, Khabarovsk Territory 681013, Russian Federation</p></bio><email xlink:type="simple">diss@knastu.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/0000-0003-0200-1675</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Одиноков</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Odinokov</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валерий Иванович Одиноков, д.т.н., профессор, главный научный сотрудник Управления научно-исследовательской деятельностью</p><p>Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр. Ленина, 27</p></bio><bio xml:lang="en"><p>Valerii I. Odinokov, Dr. Sci. (Eng.), Prof., Chief Researcher of the Department of Research Activities</p><p>27 Lenina Ave., Komsomolsk-on-Amur, Khabarovsk Territory 681013, Russian Federation</p></bio><email xlink:type="simple">79122718858@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/0000-0001-5142-2455</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чернышова</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Chernyshova</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дарья Витальевна Чернышова, аспирант кафедры «Авиастрое­ние»</p><p>Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр. Ленина, 27</p></bio><bio xml:lang="en"><p>Dar’ya V. Chernyshova, Postgraduate of the Chair of Aircraft Engineering</p><p>27 Lenina Ave., Komsomolsk-on-Amur, Khabarovsk Territory 681013, Russian Federation</p></bio><email xlink:type="simple">daracernysova744@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/0000-0003-0667-2468</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Евстигнеева</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Evstigneeva</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анна Алексеевна Евстигнеева, студент</p><p>Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр. Ленина, 27</p></bio><bio xml:lang="en"><p>Anna A. Evstigneeva, Student</p><p>27 Lenina Ave., Komsomolsk-on-Amur, Khabarovsk Territory 681013, Russian Federation</p></bio><email xlink:type="simple">annka.ewstic@mail.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/0000-0001-8023-316X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дмитриев</surname><given-names>Э. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dmitriev</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Эдуард Анатольевич Дмитриев, д.т.н., доцент, ректор</p><p>Россия, 681013, Хабаровский край, Комсомольск-на-Амуре, пр. Ленина, 27</p></bio><bio xml:lang="en"><p>Eduard A. Dmitriev, Dr. Sci. (Eng.), Prof., Assist. Prof., Rector</p><p>27 Lenina Ave., Komsomolsk-on-Amur, Khabarovsk Territory 681013, Russian Federation</p></bio><email xlink:type="simple">rector@knastu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Комсомольский-на-Амуре государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Komsomolsk-on-Amur State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>08</day><month>01</month><year>2026</year></pub-date><volume>68</volume><issue>6</issue><fpage>613</fpage><lpage>620</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Евстигнеев А.И., Одиноков В.И., Чернышова Д.В., Евстигнеева А.А., Дмитриев Э.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Евстигнеев А.И., Одиноков В.И., Чернышова Д.В., Евстигнеева А.А., Дмитриев Э.А.</copyright-holder><copyright-holder xml:lang="en">Evstigneev A.I., Odinokov V.I., Chernyshova D.V., Evstigneeva A.A., Dmitriev E.A.</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/2999">https://fermet.misis.ru/jour/article/view/2999</self-uri><abstract><p>При кристаллизации жидкого металла в оболочковой литейной форме на ее поверхностях возникают значительные нормальные напряжения: на внутренней – сжимающие, на наружной – растягивающие. Особенно ярко они проявляются в начальный момент времени охлаждения. Это может привести к повреждению литейной формы, а значит, и к повреждению кристаллизующейся металлической отливки. Снизить уровень напряженно-деформированного состояния в поверхностных слоях можно с помощью нанесения на внешнюю и внутреннюю поверхности специальных кольцевых (температурных) выточек (швов). В настоящей работе сформулирована и решена задача по влиянию температурных швов во внутренних и внешних слоях оболочковой формы (ОФ) на уровень её напряженно-деформированного состояния (НДС) при кристаллизации стальной отливки. В качестве параметра стойкости ОФ к трещинообразованию приняты нормальные напряжения σ22 , σ33 , возникающие как на внутренней, так и внешней поверхностях ОФ в начальный момент заливки металла и охлаждения стальной отливки. Рассматривается осесимметричная задача для цилиндрической керамической ОФ. На основе сформулированной целевой функции приведен алгоритм решения задачи с использованием уравнений линейной теории упругости, уравнения теплопроводности и апробированного численного метода. В результате решения задачи определено минимальное количество и места расположения выточек на внутренней и внешней поверхности ОФ, обеспечивающих уменьшение нормальных напряжений. Результаты решения задачи представлены в виде эпюр напряжений по сечениям рассматриваемой области. Дан анализ полученных результатов стойкости ОФ к трещинообразованию. Даны рекомендации по использованию результатов работы в различных научно-технических областях.</p></abstract><trans-abstract xml:lang="en"><p>During the crystallization of liquid metal in a shell casting mold, significant normal stresses occur on its surfaces. On the inner – compressive, on the outer – tensile. They are especially pronounced at the initial moment of cooling time. This can lead to damage to the casting mold, and hence damage to the crystallizing metal casting. It is possible to reduce the level of stress-strain state in the surface layers by applying special annular (temperature) recesses (seams) to the outer and inner surfaces. In this paper, the problem of the influence of temperature seams in inner and outer layers of a shell mold (SM) on the level of its stress-strain state (SSS) during crystallization of a steel casting was formulated and solved. The normal stresses σ22 , σ33 , which occur both on the inner and outer surfaces of SM at the initial moment of metal casting and cooling of the steel casting, are accepted as a parameter of SM resistance to cracking. An axisymmetric problem for a cylindrical ceramic SM is considered. Based on the formulated objective function, the paper presents an algorithm for solving the problem using the equations of the linear theory of elasticity, the equation of thermal conductivity and the proven numerical method. As a result of solving the problem, the minimum number and locations of recesses on the inner and outer surfaces of SM, ensuring a decrease in normal stresses, were determined. The results of solving the problem are presented in the form of stress plots across the sections of the considered area. The authors analyzed the obtained results of SM resistance to cracking and gave recommendations on the use of the obtained results in various scientific and technical fields.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>литье по выплавляемым моделям</kwd><kwd>оболочковая форма</kwd><kwd>напряженное состояние</kwd><kwd>температурный шов</kwd><kwd>трещиностойкость</kwd><kwd>алгоритм определения напряжений</kwd></kwd-group><kwd-group xml:lang="en"><kwd>investment casting</kwd><kwd>shell mold</kwd><kwd>stress state</kwd><kwd>temperature seam</kwd><kwd>crack resistance</kwd><kwd>stresses detection algorithm</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 24-29-00214, https://rscf.ru/project/24-29-00214/.</funding-statement><funding-statement xml:lang="en">The research was supported by the Russian Science Foundation, grant No. 24-29-00214, https://rscf.ru/project/24-29-00214/.</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">Kanyo J.E., Schafföner S., Uwanyuze R.Sh., Leary K.S. 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