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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">10.53360/2788-7995-2025-1(17)-44</article-id><article-id custom-type="elpub" pub-id-type="custom">kaz44-1761</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>ТЕОРЕТИЧЕСКИЕ ИССЛЕДОВАНИЯ ТЕПЛОВЫХ ПРОЦЕССОВ ПРИ  ЭЛЕКТРОЛИТНО-ПЛАЗМЕННОЙ ЗАКАЛКЕ</article-title><trans-title-group xml:lang="en"><trans-title>THEORETICAL STUDIES OF THERMAL PROCESSES IN ELECTROLYTIC-PLASMA  HARDENING</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>Рахадилов</surname><given-names>Б. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Rakhadilov</surname><given-names>B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бауржан Рахадилов – PhD, проректор по научной работе Восточно-Казахстанского университета имени Сарсена Аманжолова</p><p>070000, г. Усть-Каменогорск, ул. Гоголя, 7Г</p></bio><bio xml:lang="en"><p>Bauyrzhan Rakhadilov – PhD, Vice-rector on scientific work of Sarsen Amanzholov East Kazakhstan University</p><p>070018, Ust-Kamenogorsk, Gogol str. 7G</p></bio><email xlink:type="simple">rakhadilovb@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>Кусаинов</surname><given-names>Р. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Kusainov</surname><given-names>R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ринат Кенжеевич Кусаинов – руководитель </p><p>071412, г. Семей, ул. Физкультурная, 4а</p></bio><bio xml:lang="en"><p>Rinat Kenzheevich Kusainov – Head</p><p>071412, Semey, Fizkulturnaya str., 4a</p></bio><email xlink:type="simple">rinat.k.kus@mail.ru</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>Курмангалиев</surname><given-names>Р. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurmangaliev</surname><given-names>R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ринат Хамитулы Курмангалиев – младший научный сотрудник </p><p>071412, г. Семей, ул. Физкультурная, 4а</p></bio><bio xml:lang="en"><p>Rinat Khamituly Kurmangaliev – Junior Researcher </p><p>071412, Semey, Fizkulturnaya str., 4a</p></bio><email xlink:type="simple">rinat_real@rambler.ru</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>Бин Абд Азис</surname><given-names>М. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Bin Abd Azis</surname><given-names>M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мухаммад Нуразлан Бин Абд Азис – PhD, доцент, Наноцентр, факультет науки и математики</p><p>anjong Malim, 35900, Перак</p></bio><bio xml:lang="en"><p>Muhammad Noorazlan Bin Abd Azis – PhD, Associate Professor, Nano Center, Faculty of Science and Mathematics</p><p>Tanjong Malim, 35900, Perak</p></bio><email xlink:type="simple">azlanmn@fsmt.upsi.edu.my</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мусатаева</surname><given-names>Н. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Musataeva</surname><given-names>N. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Назира Мусатаева – студентка группы F-302</p><p>071412, г. Семей, ул. Физкультурная, 4а</p></bio><bio xml:lang="en"><p>Nazira Musataeva – Student of the F-302 group</p><p>071412, Semey, Fizkulturnaya str., 4a</p></bio><email xlink:type="simple">naziramusataeva51@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ТОО «Plasma Science»<country>Казахстан</country></aff><aff xml:lang="en">LLP «Plasma Science»<country>Kazakhstan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Инжиниринговый центр «Упрочняющие технологий и покрытия», Университет имени Шакарима города Семей<country>Казахстан</country></aff><aff xml:lang="en">Engineering Center «Strengthening Technologies and Coatings»<country>Kazakhstan</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Университет образования султана Идриса<country>Малайзия</country></aff><aff xml:lang="en">Universiti Pendidikan Sultan Idris<country>Malaysia</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>29</day><month>03</month><year>2025</year></pub-date><volume>0</volume><issue>1(17)</issue><fpage>342</fpage><lpage>352</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Рахадилов Б.К., Кусаинов Р.К., Курмангалиев Р.Х., Бин Абд Азис М.Н., Мусатаева Н.Е., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Рахадилов Б.К., Кусаинов Р.К., Курмангалиев Р.Х., Бин Абд Азис М.Н., Мусатаева Н.Е.</copyright-holder><copyright-holder xml:lang="en">Rakhadilov B., Kusainov R., Kurmangaliev R., Bin Abd Azis M., Musataeva N.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://tech.vestnik.shakarim.kz/jour/article/view/1761">https://tech.vestnik.shakarim.kz/jour/article/view/1761</self-uri><abstract><p>В статье рассмотрены теоретические аспекты тепловых процессов, происходящих при ЭПУ, включая анализ температурных полей и скоростей нагрева. Для численного моделирования использован метод конечных разностей, что позволило более точно определить распределение температуры в обрабатываемом материале. Рассматривалась задача теплопереноса в плоской пластине толщиной 15 мм, при котором граничные условия были следующими: на одной границе производился нагревание поверхностным тепловым потоком электролитной плазмы, с противоположной стороны тепло отводилось за счет конвекции в воздушной среде. Расчеты показали неравномерность распределения температуры по времени и глубине, что подтверждает возникновения трех разных структурных зон: зоны закалки, зоны термического воздействия и основной матрицы. Температура образцов при эксперименте измерялась с помощью термопары на расстоянии 2 мм от нагреваемой поверхности. Экспериментальные данные, полученные при обработке образцов из стали марки 45, подтвердили корректность численного моделирования. Результаты исследования демонстрируют эффективность использования численного моделирования, включая метод конечных разностей, для оптимизации параметров ЭПУ, что сокращает объем экспериментальных работ и снижает затраты на разработку технологий. Полученные данные могут быть использованы для совершенствования технологий упрочнения поверхностей деталей из конструкционных сталей, применяемых в сельскохозяйственной технике, машиностроении и других отраслях промышленности. Исследование подтверждает перспективность применения ЭПУ для повышения эксплуатационных характеристик стальных изделий.</p></abstract><trans-abstract xml:lang="en"><p>This article examines the theoretical aspects of thermal processes occurring during electrolytic-plasma hardening (EPH), including the analysis of temperature fields and heating rates. The finite difference method was used for numerical modeling, allowing for a more precise determination of the temperature distribution in the treated material. The heat transfer problem in a flat plate with a thickness of 15 mm was considered, where the boundary conditions were as follows: on one boundary, heating was carried out by a surface thermal flux from the electrolyte plasma, while on the opposite side, heat was dissipated through convection in an air medium. The calculations revealed non-uniform temperature distribution over time and depth, confirming the formation of three distinct structural zones: the hardened zone, the heat-affected zone, and the base matrix. The temperature of the samples during the experiment was measured using a thermocouple positioned 2 mm from the heated surface. Experimental data obtained from the treatment of 45 steel samples confirmed the accuracy of the numerical modeling. The research results demonstrate the effectiveness of numerical modeling, including the finite difference method, in optimizing EPH parameters, thereby reducing the volume of experimental work and lowering technology development costs. The obtained data can be used to improve surface hardening technologies for structural steel components used in agricultural machinery, mechanical engineering, and other industries. The study confirms the potential of EPH for enhancing the operational characteristics of steel products.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Электролитно-плазменное упрочнение</kwd><kwd>сталь 45</kwd><kwd>уравнение теплопроводности</kwd><kwd>численное моделирование</kwd><kwd>тепловые процессы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Electrolytic-plasma hardening</kwd><kwd>45 steel</kwd><kwd>heat conduction equation</kwd><kwd>numerical modeling</kwd><kwd>thermal processes</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">Thermal conductivity coefficients of stainless steel 12X18H10T in a wide temperature range / S.V. Stankus et al // High-Temperature Thermophysics. – 2008. – Vol. 46, № 5. – P. 795-797.</mixed-citation><mixed-citation xml:lang="en">Thermal conductivity coefficients of stainless steel 12X18H10T in a wide temperature range / S.V. 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