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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">kaz44</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Университета Шакарима. Серия технические науки</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Shakarim University. Technical Sciences</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2788-7995</issn><issn pub-type="epub">3006-0524</issn><publisher><publisher-name>«Шәкәрім университеті» КеАҚ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.53360/2788-7995-2026-2(22)-63</article-id><article-id custom-type="elpub" pub-id-type="custom">kaz44-2624</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>ТЕХНИЧЕСКАЯ ФИЗИКА И ТЕПЛОЭНЕРГЕТИКА</subject></subj-group></article-categories><title-group><article-title>ВЛИЯНИЕ ТОНКОГО HVOF-ПОКРЫТИЯ CR₃C₂-NICR НА ТЕРМИЧЕСКОЕ СОПРОТИВЛЕНИЕ И ТЕМПЕРАТУРНОЕ СОСТОЯНИЕ ТРУБ ПАРОПЕРЕГРЕВАТЕЛЯ КОТЛА БКЗ-320-140</article-title><trans-title-group xml:lang="en"><trans-title>THE EFFECT OF A THIN CR₃C₂-NICR HVOF COATING ON THE THERMAL RESISTANCE AND TEMPERATURE DISTRIBUTION OF STEAM SUPERHEATER TUBES IN A BKZ-320-140 BOILER</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0203-6050</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Даутбеков</surname><given-names>М. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Dautbekov</surname><given-names>M. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мерхат Курметович Даутбеков – научный сотрудник,</p><p>070002, г. Усть-Каменогорск, ул. Гоголя, 7г</p></bio><bio xml:lang="en"><p>Merkhat Kurmetovich Dautbekov – Researcher,</p><p>070002, Ust-Kamenogorsk, st. Gogol, 7g</p></bio><email xlink:type="simple">merkhatd@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/0000-0002-5630-9467</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кеңесбеков</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Kengesbekov</surname><given-names>A. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Айдар Бақытбекұлы Кеңесбеков – старший научный сотрудник,</p><p>070002, г. Усть-Каменогорск, пр. Шакарим, 157</p></bio><bio xml:lang="en"><p>Aidar Bakytbrkuly Kenesbekov – Senior Researcher, </p><p>070002, Ust-Kamenogorsk, st. Shakarym Ave. 157</p></bio><email xlink:type="simple">kenesbekovaidar@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Төлеубаев</surname><given-names>Т. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Toleubayev</surname><given-names>T. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тұрар Тұрысбекұлы Төлеубаев – руководитель отдела подготовки ремонтов и перспективного развития,</p><p>070002, г. Усть-Каменогорск, ул. Промышленная, 2</p></bio><bio xml:lang="en"><p>Turar Turysbekuly Toleubaev – Head of the Department of Repair Preparation and Prospective Development, </p><p>Ust-Kamenogorsk, Promyshlennaya St., 2</p></bio><email xlink:type="simple">turar.t.t@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-8026-1408</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мұрал</surname><given-names>А.</given-names></name><name name-style="western" xml:lang="en"><surname>Mural</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Айбол Мурал – младший научный сотрудник,</p><p>070002, г. Усть-Каменогорск, ул. Гоголя, 7г</p></bio><bio xml:lang="en"><p>Aibol Mural – Junior Researcher,</p><p>070002, Ust-Kamenogorsk, st. Gogol, 7g</p></bio><email xlink:type="simple">aibolm02@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ТОО «PlasmaScience»</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>PlasmaScience LLP</institution><country>Kazakhstan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ТОО «Институт композиционных материалов»</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>Institute of Composite Materials LLP</institution><country>Kazakhstan</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ТОО «Усть-Каменогорская ТЭЦ»</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>LLP «Ust-Kamenogorsk CHP»</institution><country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>29</day><month>07</month><year>2026</year></pub-date><volume>0</volume><issue>2(22)</issue><fpage>593</fpage><lpage>605</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Даутбеков М.К., Кеңесбеков А.Б., Төлеубаев Т.Т., Мұрал А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Даутбеков М.К., Кеңесбеков А.Б., Төлеубаев Т.Т., Мұрал А.</copyright-holder><copyright-holder xml:lang="en">Dautbekov M.K., Kengesbekov A.B., Toleubayev T.T., Mural 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://tech.vestnik.shakarim.kz/jour/article/view/2624">https://tech.vestnik.shakarim.kz/jour/article/view/2624</self-uri><abstract><p>В работе проведён анализ влияния газотермических покрытий на основе Cr₃C₂- NiCr, полученных методом высокоскоростного газопламенного напыления (HVOF), на теплофизические характеристики труб ширмовых пароперегревателей котлоагрегата БКЗ-320- 140. Рассмотрено влияние защитного покрытия на процессы теплопередачи, включая конвективный и радиационный теплообмен, а также на температурное состояние металла в условиях высокотемпературного воздействия дымовых газов. Расчёт температурного поля выполнен методом конечных элементов в программном комплексе ELCUT 6.6 с учётом нестационарного режима теплопередачи. В ходе моделирования учтены реальные эксплуатационные параметры, включая давление и температуру пара, скорость потоков и теплофизические свойства материалов. Установлено, что наличие покрытия приводит к незначительному увеличению суммарного термического сопротивления системы «стенка трубы – покрытие». При этом влияние покрытия на температурный режим труб и плотность теплового потока остаётся минимальным. Показано, что применение покрытий Cr₃C₂-NiCr позволяет повысить коррозионно-эрозионную стойкость поверхностей нагрева без существенного снижения теплотехнической эффективности котлоагрегата в реальных условиях эксплуатации. Полученные результаты могут быть использованы при проектировании, модернизации и оптимизации энергетического оборудования тепловых электростанций в промышленной энергетике Казахстана.</p></abstract><trans-abstract xml:lang="en"><p>This study analyzes the effect of HVOF-sprayed Cr₃C₂-NiCr coatings on the thermophysical characteristics of superheater tubes of the BKZ-320-140 boiler unit. The influence of the protective coating on heat transfer processes, including convective and radiative heat exchange, as well as on the temperature state of the tube material under high-temperature flue gas conditions, is investigated. The temperature field was calculated using the finite element method in the ELCUT 6.6 software under transient heat transfer conditions. The model incorporates real operating parameters, including steam pressure and temperature, flow velocities, and thermophysical properties of materials. The results show that the presence of the coating leads to a slight increase in the total thermal resistance of the “tube wall–coating” system. However, its effect on the temperature regime and heat flux density is negligible. It is demonstrated that Cr₃C₂-NiCr coatings improve the corrosion and erosion resistance of heating surfaces without significantly reducing the thermal efficiency of the boiler unit under real operating conditions. The obtained results can be applied in design, modernization and optimization of power equipment in industrial energy systems of Kazakhstan.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>тепловые электростанции</kwd><kwd>поверхности нагрева</kwd><kwd>пароперегреватель</kwd><kwd>газотермическое напыление</kwd><kwd>HVOF</kwd><kwd>защитные покрытия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>thermal power plants</kwd><kwd>heating surfaces</kwd><kwd>steam superheater</kwd><kwd>gas thermal spraying</kwd><kwd>detonation spraying</kwd><kwd>protective coatings</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Данное исследование финансировалось Комитетом науки Министерства науки и высшего образования Республики Казахстан (грант № AP226683418).</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">International Energy Agency. 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