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  <front>
    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.31897/pmi.2019.2.216</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-13189</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/13189</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Электромеханика и машиностроение</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Electromechanics and mechanical engineering</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Development and research of formation technologies on specialized presses with subsequent sintering of high-density details from iron-based powders</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Разработка  и  исследование  технологии формования на специализированных прессах с последующим спеканием высокоплотных деталей из порошков на железной основе</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Dmitriev</surname>
            <given-names>A. M.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Дмитриев</surname>
              <given-names>А. М.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Dmitriev</surname>
              <given-names>A. M.</given-names>
            </name>
          </name-alternatives>
          <email>countess.olga@gmail.com</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Московский государственный технологический университет «СТАНКИН» (Москва, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Moscow State Technological University «STANKIN» (Moscow, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Korobov</surname>
            <given-names>N. V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Коробова</surname>
              <given-names>Н. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Korobov</surname>
              <given-names>N. V.</given-names>
            </name>
          </name-alternatives>
          <email>mt-6@yandex.ru</email>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Московский государственный технологический университет «СТАНКИН» (Москва, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Moscow State Technological University «STANKIN» (Moscow, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Badalyan</surname>
            <given-names>A. Zh.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Бадалян</surname>
              <given-names>А. Ж.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Badalyan</surname>
              <given-names>A. Zh.</given-names>
            </name>
          </name-alternatives>
          <email>p-ooogrin@yandex.ru</email>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
        <aff-alternatives id="aff3">
          <aff>
            <institution xml:lang="ru">Московский государственный технологический университет «СТАНКИН» (Москва, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Moscow State Technological University «STANKIN» (Moscow, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2019-04-23">
        <day>23</day>
        <month>04</month>
        <year>2019</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2019</year>
      </pub-date>
      <volume>236</volume>
      <fpage>216</fpage>
      <lpage>228</lpage>
      <history>
        <date date-type="received" iso-8601-date="2018-10-28">
          <day>28</day>
          <month>10</month>
          <year>2018</year>
        </date>
        <date date-type="accepted" iso-8601-date="2018-12-30">
          <day>30</day>
          <month>12</month>
          <year>2018</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2019-04-23">
          <day>23</day>
          <month>04</month>
          <year>2019</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2019 А. М. Дмитриев, Н. В. Коробова, А. Ж. Бадалян</copyright-statement>
        <copyright-statement xml:lang="en">© 2019 A. M. Dmitriev, N. V. Korobov, A. Zh. Badalyan</copyright-statement>
        <copyright-year>2019</copyright-year>
        <copyright-holder xml:lang="ru">А. М. Дмитриев, Н. В. Коробова, А. Ж. Бадалян</copyright-holder>
        <copyright-holder xml:lang="en">A. M. Dmitriev, N. V. Korobov, A. Zh. Badalyan</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/13189">https://pmi.spmi.ru/pmi/article/view/13189</self-uri>
      <abstract xml:lang="ru">
        <p>Создание в деформируемой заготовке сдвигов ее слоев улучшает качество изготавливаемого обработкой давлением изделия. Схемы равноканального углового прессования и осадки цилиндрической заготовки поворачивающимся бойком были разработаны специалистами ранее и стали базовыми для ученых, занимающихся нанотехнологиями. Одной из наиболее современных схем создания наноструктур обработкой на прессах является схема «Cyclic Extrusion Compression» (в России – «Песочные часы»), имеющая существенные недостатки. До настоящего времени исследований по созданию сдвигов слоев в уплотняемых металлических порошках существенно меньше, чем при уплотнении компактных заготовок. В статье разработаны схемы уплотнения на прессах заготовок из порошков на железной основе, имеющие некоторую аналогию с «Песочными часами», при этом лишенные недостатков, присущих названной схеме, и реализуемые на созданных образцах специализированных гидравлических прессов. Описаны результаты проведенных исследований плотности, прочности и микротвердости до спекания образцов, формованных из ряда отечественных и импортных порошков на железной основе, в том числе легированных углеродом и другими легирующими компонентами. Установлено, что при применении схем формования порошков, обеспечивающих большие сдвиги между частицами, плотность заготовок повышается в среднем на 10-12 %. При среднем напряжении (16,32 МПа) поперечного среза формованного образца до его спекания формование со сдвигами между частицами увеличивает это напряжение на 78 %. Предел прочности после спекания образцов, изготовленных с применением разработанных авторами статьи схем их уплотнения, увеличивается примерно в 2 раза. Магнитно-импульсная обработка (МИО) формованного образца до его спекания увеличивает его прочность на срез до спекания независимо от схемы формования. При проведении МИО как порошка, так и сформованного образца достигается наиболее равномерное распределение микротвердости в образце, а после последующего спекания – наиболее равномерное распределение механических характеристик изделия. Результаты всех исследований описаны уравнениями регрессии.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Creating shifts of the lyaers in a deforming workpieces improves the quality of the product produced by pressure treatment. qual-channel angular pressing and precipitations of a cylindrical billet with a rotating turnaround were developed by specialists earlier and became basic for scientists engaged in nanotechnology. One of the most modern schemes for creating nanostructures by processing on presses is the «Cyclic Extrusion Compression» scheme (in Russia – «Hourglass»), which has significant drawbacks. To date, research on the creation of layer shifts in compacted metal powders is substantially less than in compaction of compact blanks. The article developed compaction schemes for presses of blanks from iron-based powders that have a certain analogy with the «Hourglass», while lacking the disadvantages inherent in the named scheme and implemented on the created samples of specialized hydraulic presses. The results of the studies of density, strength and microhardness before sintering the samples molded from a number of domestic and imported powders on iron base, including those doped with carbon and other alloying components, are described. It has been established that with the use of the formation schemes for powders providing large shifts between particles, the density of the preforms increases on average by 10-12 %. With an average stress (16.32 MPa) of the transverse section of the molded specimen prior to its sintering, molding with shifts between particles increases this stress by 78 %. The strength after sintering of samples made using the compaction schemes developed by the authors of the article increases approximately by 2 times. Magnetic pulse treatment (MPT) of a molded sample prior to its sintering increases its resistance to shearing before sintering, regardless of the molding pattern. When MPT of both the powder and the molded sample is executed, the most uniform distribution of microhardness in the sample is achieved, and after subsequent sintering, the most uniform distribution of the mechanical characteristics of the product. The results of all studies are described by regression equations.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>материалы порошковые</kwd>
        <kwd>железная основа</kwd>
        <kwd>формование холодное на прессах</kwd>
        <kwd>формование со сдвигаи слоев</kwd>
        <kwd>образцы высокоплотные</kwd>
        <kwd>механические характеристики образцов до спекания</kwd>
        <kwd>влияние магнитно-импульсной обработки при формовании</kwd>
        <kwd>исследование</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>powder materials</kwd>
        <kwd>iron base</kwd>
        <kwd>cold molding on presses</kwd>
        <kwd>shifts shaping</kwd>
        <kwd>high-density samples</kwd>
        <kwd>mechanical characteristics of the samples before sintering</kwd>
        <kwd>Influencing magnetic pulse processing during molding</kwd>
        <kwd>study</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
  <back>
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