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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">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2022-1-28-34</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2234</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>МЕТАЛЛУРГИЧЕСКИЕ ТЕХНОЛОГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METALLURGICAL TECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>Модернизация технологии винтовой прокатки в многовалковом стане</article-title><trans-title-group xml:lang="en"><trans-title>Modernization of screw rolling technology in a multi-roll mill</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>Ротенберг</surname><given-names>Ж. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Rotenberg</surname><given-names>Zh. Ya.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жозеф Яковлевич Ротенберг, к.т.н., доцент</p><p>620133, Екатеринбург, ул. Луначарского, стр. 31, оф. 304</p></bio><bio xml:lang="en"><p>Zhozef Ya. Rotenberg, Cand. Sci. (Eng.), Assist. Prof.</p><p>room 304, bld. 31, Lunacharskogo Str., Yekaterinburg 620133</p></bio><email xlink:type="simple">zhozef.rotenberg@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>Будников</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Budnikov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Сергеевич Будников, к.т.н., доцент кафедры «Обработка металлов давлением»</p><p>119049, Москва, Ленинский пр., 4</p></bio><bio xml:lang="en"><p>Aleksei S. Budnikov, Cand. Sci. (Eng.), Assist. Prof. of the Chair “Metal Forming”</p><p>4 Leninskii Ave., Moscow 119049</p></bio><email xlink:type="simple">budnikov.as@misis.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ООО «Уральский научно-исследовательский технологический институт»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>LLC Ural Scientific Research Technological Institute</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский технологический университет «МИСиС»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National University of Science and Technology “MISIS”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>11</day><month>02</month><year>2022</year></pub-date><volume>65</volume><issue>1</issue><fpage>28</fpage><lpage>34</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ротенберг Ж.Я., Будников А.С., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Ротенберг Ж.Я., Будников А.С.</copyright-holder><copyright-holder xml:lang="en">Rotenberg Z.Y., Budnikov A.S.</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://fermet.misis.ru/jour/article/view/2234">https://fermet.misis.ru/jour/article/view/2234</self-uri><abstract><p>Анализ процесса винтовой прокатки показал, что изменение осевой скорости валка по длине калибра косовалкового стана не соответствует требуемому характеру изменения скорости деформируемой заготовки. Процесс протекает при интенсивном осевом сжатии, в результате чего значительная часть обжимаемого в контактной зоне металла вытесняется в межвалковую зону. Показано, что от величины угла наклона образующей рассматриваемого участка валка к оси прокатки зависит направление осевой силы в соответствующей зоне прокатного калибра. Предложена модернизация технологии винтовой прокатки, позволяющая осуществить деформацию заготовки под воздействием внутриочагового осевого растяжения. Поставленная задача осуществляется путем применения калибровки валков, при которой в начале расположен гребневой участок валка, на котором осевая сила направлена против направления прокатки, а за ним – тянущий, на котором направление осевой силы совпадает с направлением прокатки. Такая схема действия осевых сил в зоне интенсивного обжатия заготовки создает наиболее благоприятные условия для течения металла в осевом направлении. Предложено техническое решение для осуществления стадии захвата заготовки валками, приведено описание указанной стадии и стационарной фазы процесса. Осуществленное в результате модернизации кардинальное изменение условия деформации заготовки позволяет снизить силовую нагрузку на рабочие валки, повысить их работоспособность и уменьшить энергетические затраты при прокатке. Это обеспечит прокатку сплошной заготовки в обжимном стане с большей вытяжкой, создаст предпосылки для расширения размерного и марочного сортамента при получении прутков в станах радиально-сдвиговой прокатки, а при производстве труб в прокатных линиях со станом Ассела диапазон готовой продукции может быть существенно расширен за счет изготовления тонкостенных, высокоточных труб.</p></abstract><trans-abstract xml:lang="en"><p>Analysis of the screw rolling process showed that change in axial speed of the roll along the length of the roll groove of cross rolling mill does not correspond to the required character of change in the speed of deformed billet. The process proceeds under intense axial compression, as a result of which a significant part of the metal crimped in the contact zone is displaced into the inter-roll area. It is shown that direction of the axial force in the corresponding zone of the roll groove depends on the value of inclination angle of the considered roll section generatrix to the rolling axis. The proposed modernization of screw rolling technology makes it possible to carry out deformation of the billet under the influence of intra-focal axial tension. The task is accomplished by rolls calibration when at the beginning there is a ridge section of the roll on which the axial force is directed against rolling direction; and behind it, a pulling one, on which the direction of the axial force coincides with rolling direction. Such a scheme of the axial forces action in the zone of intensive billet reduction creates the most favorable conditions for the metal flow in axial direction. A technical solution is proposed for the implementation of the stage of the billet gripping by rolls, and description of this stage and the process stationary phase is given. The cardinal change in the billet deformation condition after modernization makes it possible to reduce the power load on the work rolls, increase their efficiency and reduce energy costs during rolling. This will ensure the rolling of a solid billet in a roughing mill with a higher stretch, create the preconditions for expanding the size and grade assortment when obtaining rods in radial-displacement rolling mills and at production of pipes in rolling lines with the Assel mill. The range of finished products can be significantly expanded due to the production of thin-walled highprecision pipes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>винтовая прокатка</kwd><kwd>многовалковый стан</kwd><kwd>угол подачи</kwd><kwd>раскатной стан</kwd><kwd>рабочий валок</kwd><kwd>гребневая калибровка</kwd><kwd>осевое растяжение</kwd><kwd>вытяжка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>screw rolling</kwd><kwd>multi-roll mill</kwd><kwd>feed angle</kwd><kwd>rolling mill</kwd><kwd>work roll</kwd><kwd>ridge calibration</kwd><kwd>axial stretching</kwd><kwd>rolling-out</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">Ротенберг Ж.Я. Скорость подачи валка стана винтовой прокатки. Реферат рукописи // Библиографический указатель ВИНИТИ «Депонированные научные работы». 1988. № 10. С. 187.</mixed-citation><mixed-citation xml:lang="en">Rotenberg Zh.Ya. 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