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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">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32446/0368-1025it.2025-6-23-31</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-2413</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>ИЗМЕРЕНИЯ В ИНФОРМАЦИОННЫХ ТЕХНОЛОГИЯХ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MEASUREMENTS IN INFORMATION TECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>Метод комплексного мониторинга газовой среды в процессе селективного лазерного плавления</article-title><trans-title-group xml:lang="en"><trans-title>A method for the comprehensive monitoring of gas environments during selective laser melting</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-7359-9871</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пимушкин</surname><given-names>Я. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Pimushkin</surname><given-names>Ya. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ярослав Игоревич Пимушкин</p><p>Москва</p></bio><bio xml:lang="en"><p>Yaroslav I. Pimushki</p><p>Moscow</p></bio><email xlink:type="simple">yaroslav-pimushkin@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/0009-0004-6453-069X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федотенко</surname><given-names>Е. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedotenko</surname><given-names>E. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Екатерина Дмитриевна Федотенко</p><p>Москва</p></bio><bio xml:lang="en"><p>Ekaterina D. Fedotenko</p><p>Moscow</p></bio><email xlink:type="simple">kat.fedotenko@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/0000-0002-8239-5354</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Григорьев</surname><given-names>С. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Grigoriev</surname><given-names>S. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Николаевич Григорьев</p><p>Москва</p></bio><bio xml:lang="en"><p>Sergey N. Grigoriev</p><p>Moscow</p></bio><email xlink:type="simple">s.grigoriev@stankin.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный технологический университет «СТАНКИН»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State University for Technology “STANKIN”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>13</day><month>12</month><year>2025</year></pub-date><volume>74</volume><issue>6</issue><fpage>23</fpage><lpage>31</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ФГУП "ВНИИФТРИ", 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">ФГУП "ВНИИФТРИ"</copyright-holder><copyright-holder xml:lang="en">ФГУП "ВНИИФТРИ"</copyright-holder><license xlink:href="https://www.izmt.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.izmt.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.izmt.ru/jour/article/view/2413">https://www.izmt.ru/jour/article/view/2413</self-uri><abstract><p>Современные аддитивные технологии, в частности селективное лазерное плавление, позволяют создавать изделия со сложной геометрией и требуемыми физико-механическими характеристиками. На качество конечного изделия влияет состав газовой среды в рабочей камере установок, реализующих селективное лазерное плавление. Наиболее критично окисление расплавленного металла, которое приводит к образованию дефектов формы и ухудшению механических свойств готового изделия. Существующие стандартные системы мониторинга, основанные на удалённом расположении датчиков, не обеспечивают достаточной полноты информации о газовой среде в рабочей камере установок, например, о локальных флуктуациях состава газовой среды непосредственно в ванне расплава и образовании газообразных окислителей – оксидов азота NOx и паров воды. Предложен и экспериментально обоснован метод комплексногомониторинга газовой среды, основанный на детектировании суммарной концентрациимолекулярного кислорода, NOx и индикаторов влаги H2, NH3. Разработана архитектура информационно-измерительной системы комплексного мониторинга газовой среды. Система интегрируется в существующее промышленное оборудование без его конструктивных изменений. По результатам экспериментальных исследований на технологических машинах EOS M 280 (Electro Optical Systems, Германия) и Farsoon FS 121M (Farsoon, Китай) подтверждено образование NOx в процессе плавления и показано, что предложенным методом можно получить более точную информацию о составе газовой среды, чем с использованием стандартных систем. Разработанная информационно-измерительная система комплексногомониторинга предназначена длямногоуровневого контроля состава газовой среды путёмавтоматического управления подачей газов на основе многопараметрического анализа в реальном времени. Применение системы позволяет получить более полную картину о химическом составе среды в рабочей камере установки селективного лазерного плавления и адекватно реагировать на риски окисления, минимизируя дефекты и повышая качество изделий.</p></abstract><trans-abstract xml:lang="en"><p>Modern additive technologies, in particular selective laser melting, allow the creation of products with complex geometries and the required physical and mechanical characteristics. The quality of the final product is infl uenced by the composition of the gas environment in the working chamber of selective laser melting installations. The most critical factor is the oxidation of molten metal, which leads to the formation of shape defects and deterioration of the mechanical properties of the finished product. Existing standard monitoring systems based on remote sensors do not provide suffi cient information about the gas environment in the working chamber of the installations, for example, about local fl uctuations in its composition directly in the melt bath and the formation of gaseous oxidants – nitrogen oxides NOx and water vapour. A method for comprehensive monitoring of the gas environment has been proposed and experimentally validated, based on the detection of the total concentration of molecular oxygen, NOx and moisture indicators H2, NH3. The architecture of an information and measurement system for comprehensive monitoring of the gas environment has been developed. The system can be integrated into existing industrial equipment without any design changes. Experimental studies on EOS M 280 (Electro Optical Systems, Germany) and Farsoon FS 121M (Farsoon, China) technological machines have confi rmed the formation of NOx during the melting process and shown that the proposed method can provide more accurate information about the state of the atmosphere than standard systems. The developed information and measurement system for comprehensive monitoring is designed to prevent oxidative processes in the working chamber of a selective laser melting installation by means of multi-level control of the gas environment composition. Automatic gas supply control based on real-time multi-parameter analysis provides a more complete picture of the chemical composition of the environment and allows for an adequate response to oxidation risks, minimising defects and improving product quality.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>селективное лазерное плавление</kwd><kwd>газовая среда</kwd><kwd>комплексный мониторинг</kwd><kwd>оксиды азота</kwd><kwd>окислительные дефекты</kwd><kwd>многопараметрический анализ</kwd><kwd>автоматическое управление</kwd><kwd>информационноизмерительная система</kwd></kwd-group><kwd-group xml:lang="en"><kwd>selective laser melting</kwd><kwd>gas environment</kwd><kwd>comprehensive monitoring</kwd><kwd>nitrogen oxides</kwd><kwd>oxidation defects</kwd><kwd>multiparameter analysis</kwd><kwd>automated control</kwd><kwd>information and measurement system</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой Российского научного фонда (грант № 21-79-30058-П)</funding-statement><funding-statement xml:lang="en">This work was supported by the Russian Science Foundation (grant No. 21-79-30058-P).</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">Григорьев С. 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