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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="other" 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">843</article-id><article-id pub-id-type="doi">10.18323/2782-4039-2023-2-64-4</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></subject></subj-group></article-categories><title-group><article-title xml:lang="en">The study of the structure and properties of a wear-resistant gas-thermal coating containing tungsten</article-title><trans-title-group xml:lang="ru"><trans-title>Исследование структуры и свойств износостойкого газотермического покрытия с содержанием вольфрама</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Plesovskikh</surname><given-names>Aleksey Yu.</given-names></name><name xml:lang="ru"><surname>Плесовских</surname><given-names>Алексей Юрьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>postgraduate student</p></bio><bio xml:lang="ru"><p>аспирант</p></bio><email>plesovskih@tehno-oren.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5303-9780</contrib-id><name-alternatives><name xml:lang="en"><surname>Krylova</surname><given-names>Svetlana E.</given-names></name><name xml:lang="ru"><surname>Крылова</surname><given-names>Светлана Евгеньевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Doctor of Sciences (Engineering), Professor</p></bio><bio xml:lang="ru"><p>доктор технических наук, профессор</p></bio><email>krilova27@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Orenburg State University, Orenburg</institution></aff><aff><institution xml:lang="ru">Оренбургский государственный университет, Оренбург</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-06-30" publication-format="electronic"><day>30</day><month>06</month><year>2023</year></pub-date><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>89</fpage><lpage>101</lpage><history><date date-type="received" iso-8601-date="2023-06-30"><day>30</day><month>06</month><year>2023</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://vektornaukitech.ru/jour/article/view/843">https://vektornaukitech.ru/jour/article/view/843</self-uri><abstract xml:lang="en"><p>The paper presents the results of reverse engineering including metallographic, mechanical, and engineering-technical studies of used rods of a compressor produced by the Dresser-Rand company (Siemens, Germany). The study established that the original product is made of AISI 4140 steel with a working coating based on tungsten carbide applied to a depth of 0.2 mm by the HVOF method. The paper contains the results of the development of an import-substituting technological process for producing a wear-resistant powder coating of the Ni–Cr–B–WC system applied by cold gas flame spraying on the surface of a critical unit of compressor equipment in the oil and gas industry. Microanalysis identified that the sprayed spherical WC particles are evenly distributed in the nickel bond without the formation of free cavities at the lamella boundary, retain the size identical to the original powder composition upon the high-speed collision with the substrate, and minimize the level of residual mechanical stresses in the surface layer. The study shows that the sprayed coating has a high microhardness (the bases – 700 HV<sub>0.1</sub>, WC – up to 2000 HV<sub>0.1</sub>), which ensures high wear resistance during operation of the rod in a friction pair. A comparative analysis of the tribological properties of the coatings showed that when changing the shape, particle size distribution, and percentage ratio of tungsten carbide from 20 to 70 % in the nickel matrix, the overall wear resistance of the coating equivalently increases. The authors concluded on the possibility of manufacturing an import-substituting product using the gas flame spraying technology with metallurgical powder compositions containing tungsten. The authors developed an industrial technology for applying a wear-resistant coating on the working surface of a rod made of AISI 4140 steel. The paper presents the results of the analysis of the stress state of a material with a coating produced using the developed technology in comparison with the original product. In the product obtained by the experimental technology, in the process of applying the coating and its subsequent mechanical processing, uniform residual mechanical stresses are formed that do not exceed the value of the difference in the principal mechanical stresses. The paper presents the results of the study obtained both on standard samples and on a pilot part.</p></abstract><trans-abstract xml:lang="ru"><p>Представлены результаты реверс-инжиниринга, включающего металлографические, механические и инженерно-технические исследования отработанных штоков компрессора, изготовленного фирмой Dresser-Rand (Siemens, Германия). Установлено, что оригинальное изделие изготовлено из стали AISI 4140 с нанесенным рабочим покрытием на основе карбида вольфрама на глубину до 0,2 мм методом HVOF. Приведены результаты разработки импортозамещающего технологического процесса получения износостойкого порошкового покрытия системы Ni–Cr–B–WC, наносимого методом холодного газопламенного напыления на поверхность ответственного узла компрессорного оборудования нефтегазовой отрасли. Путем микроанализа установлено, что напыляемые частицы WC сферической формы равномерно распределяются в никелевой связке без образования свободных полостей на границе ламелей, сохраняют размер, идентичный исходной порошковой композиции, при скоростном соударении с подложкой, минимизируют уровень остаточных механических напряжений в поверхностном слое. Показано, что напыленное покрытие обладает высокой микротвердостью (основы – 700 HV<sub>0,1</sub>, WC – до 2000 HV<sub>0,1</sub>), что обеспечивает высокую износостойкость при эксплуатации штока в паре трения. Сравнительный анализ трибологических свойств покрытий показал, что при изменении формы, гранулометрического содержания и процентного соотношения карбида вольфрама с 20 до 70 % в никелевой матрице эквивалентно увеличивается общая износостойкость покрытия. Сделан вывод о возможности изготовления импортозамещающего изделия с использованием технологии газопламенного напыления металлургическими порошковыми композициями с содержанием вольфрама. Разработана промышленная технология нанесения износостойкого покрытия на рабочую поверхность штока из стали AISI 4140. Приведены результаты анализа напряженного состояния материала с покрытием, полученным по разработанной технологии, в сравнении с оригинальным изделием. У изделия, полученного по экспериментальной технологии, в процессе нанесения покрытия и последующей его механической обработки формируются равномерные остаточные механические напряжения, не превышающие значения разности главных механических напряжений. Представлены результаты исследования, полученные как на стандартных образцах, так и на пилотной детали. </p></trans-abstract><kwd-group xml:lang="en"><kwd>reverse engineering</kwd><kwd>compressor rod</kwd><kwd>cold gas flame spraying</kwd><kwd>wear-resistant tungsten-based coating</kwd><kwd>tribological properties</kwd><kwd>residual mechanical stresses</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>реверс-инжиниринг</kwd><kwd>шток компрессора</kwd><kwd>холодное газопламенное напыление</kwd><kwd>износостойкое покрытие на основе вольфрама</kwd><kwd>трибологические свойства</kwd><kwd>остаточные механические напряжения</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Barvinok V.A., Shitarev I.L., Bogdanovich V.I., Dokukina I.A., Karasev V.M. 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