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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">10.17073/0368-0797-2021-1-14-20</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2034</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>Разработка методики расчета остаточных напряжений и параметров пружинения листа на роликовой правильной машине</article-title><trans-title-group xml:lang="en"><trans-title>Calculation of residual stresses and parameters of sheet springing on roller leveler</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>Максимов</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Maksimov</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евгений Александрович Максимов, к.т.н., технолог</p><p>454090, Челябинск, ул. 3-го Интернационала, 113а</p></bio><bio xml:lang="en"><p>Evgenii A. Maksimov, Cand. Sci. (Eng.), Technologist</p><p>113a, 3-go Internatsionala str., Chelyabinsk 454090</p></bio><email xlink:type="simple">maksimov50@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>Шаталов</surname><given-names>Р. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Shatalov</surname><given-names>R. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Роман Львович Шаталов, д.т.н., профессор</p><p>107023, Москва, ул. Большая Семеновская, 38</p></bio><bio xml:lang="en"><p>Roman L. Shatalov, Dr. Sci. (Eng.), Prof.</p><p>38, Bol'shaya Semenovskaya str., Moscow 107023</p></bio><email xlink:type="simple">mmomd@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>Шаламов</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Shalamov</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виктор Георгиевич Шаламов, д.т.н., профессор</p><p>454080, Челябинск, пр. Ленина, 76</p></bio><bio xml:lang="en"><p>Viktor G. Shalamov, Dr. Sci. (Eng.), Prof.</p><p>76, Lenina ave., Chelyabinsk 454080</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ЗАО «Интрай»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>LLC “Intrai”</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский политехнический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Polytechnic University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Южно-Уральский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>South Ural State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>16</day><month>02</month><year>2021</year></pub-date><volume>64</volume><issue>1</issue><fpage>14</fpage><lpage>20</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Максимов Е.А., Шаталов Р.Л., Шаламов В.Г., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Максимов Е.А., Шаталов Р.Л., Шаламов В.Г.</copyright-holder><copyright-holder xml:lang="en">Maksimov E.A., Shatalov R.L., Shalamov V.G.</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/2026">https://fermet.misis.ru/jour/article/view/2026</self-uri><abstract><p>Показано, что практически все технологические процессы изготовления металлопродукции методами пластической деформации связаны с формированием в готовых изделиях самоуравновешенной системы остаточных напряжений. Уровень остаточных напряжений является во многих случаях важным параметром, определяющим качество изделий, полученных в результате пластического деформирования. Причины образования остаточных напряжений многообразны: неоднородность пластической деформации, температурного поля, фазовые превращения и др. По своей величине они могут превосходить напряжения от внешних нагрузок. В настоящее время к металлопродукции предъявляют дополнительные требования с целью создания машин и конструкций, работающих в условиях высоких нагрузок и скоростей, резких колебаний параметров внешней среды. Опыт эксплуатации конструкций в различных областях техники и результаты многочисленных экспериментов показывают, что остаточные напряжения существенно влияют на надежность и долговечность машин и механизмов. На основе теории о разгрузке А.А. Ильюшина получены аналитические зависимости для расчета эпюры изменения остаточных напряжений по толщине листа при изгибе под роликами правильной машины (РПМ), а также угла пружинения. Рассмотрено образование эпюры остаточных напряжений по толщине листа при правке для второго, третьего и последующих роликов РПМ. Установлено, что в результате принципа суперпозиции эпюра остаточных напряжений под вторым и третьим роликами складывается, образуя суммарную эпюру после второго и третьего роликов. Для четвертого, пятого, шестого и последующих роликов РПМ также происходит алгебраическое сложение эпюр остаточных напряжений. Показано, что для листа из стали 45 толщиной 10 мм, шириной 500 мм, r/h = 200 максимальные растягивающие остаточные напряжения 200 МПа наблюдаются на расстоянии Z/h = 0,3 от нейтральной линии по толщине листа. Сравнительный анализ показал, что для данного листа расхождение между опытными и расчетными значениями остаточных напряжений составляет 10 – 26 %, что позволяет рекомендовать методику расчета остаточных напряжений при правке листа на РПМ для оценки качества выправляемых листов.</p></abstract><trans-abstract xml:lang="en"><p>Practically all technological processes of metal products manufacturing by plastic deformation methods are associated with the formation of a self-balanced system of residual stresses in finished products. Level of residual stresses is in many cases an important parameter that determines the quality of products obtained as a result of plastic deformation. Reasons for the formation of residual stresses are diverse (inhomogeneity of plastic deformation, temperature field, phase transformations, etc.), which in their magnitude can exceed stresses from external loads. Currently, additional requirements are imposed on metal products in order to create machines and structures operating under high loads and speeds, sharp fluctuations in the parameters of the external environment. The experience of operating structures in various fields of technology and the results of numerous experiments show that residual stresses significantly affect the reliability and durability of machines and mechanisms. Based on the A.A. Ilyushin theory of unloading, analytical dependences were obtained for calculating the diagram of the change in residual stresses across the sheet thickness during bending under the rollers of leveler, as well as the springing angle. Formation of a diagram of residual stresses along the sheet thickness during leveling for the second, third and subsequent rollers of the leveler is considered. It was found that as a result of the superposition principle, the residual stresses diagrams under the second and third rollers are added, forming a total diagram after the second and third rollers. For the fourth, fifth, sixth and subsequent leveler rollers, an algebraic addition of the residual stress diagrams also occurs. It is shown that for a 45 steel sheet with a thickness of 10 mm, a width of 500 mm, r/h = 200, the maximum tensile residual stresses of 200 MPa are observed at a distance of Z/h = 0.3 from the neutral line along the sheet thickness. And in this case the discrepancy between the experimental and calculated values of residual stresses is 10 – 26 %, which makes it possible to recommend a method for calculating the residual stresses when leveling a sheet on a roller leveler for estimation of its quality.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>роликовая правильная машина</kwd><kwd>листовой прокат</kwd><kwd>остаточные напряжения</kwd><kwd>параметры пружинения листа после правки</kwd></kwd-group><kwd-group xml:lang="en"><kwd>roller leveler</kwd><kwd>rolled sheet</kwd><kwd>residual stresses</kwd><kwd>springing</kwd><kwd>sheet after leveling</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">Соколов И.А., Уральский В.А. Остаточные напряжения и качество металлопродукции. М.: Металлургия, 1981. 96 с.</mixed-citation><mixed-citation xml:lang="en">Sokolov I.A., Ural’skii V.A. 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