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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">10.17073/0368-0797-2020-10-829-835</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-1998</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>Изменение податливости сырой песчано-глинистой формы под воздействием геометрических и теплофизических свойств отливки</article-title><trans-title-group xml:lang="en"><trans-title>Impact of transportation on foundry coke quality</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>Колокольцев</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolokol’tsev</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор, президент ФГБОУ ВО «Магнитогорский государственный технический университет им. Г.И. Носова»</p><p>455000, Россия, Челябинская обл., Магнитогорск, пр. Ленина, 38</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Professor, President</p><p>Magnitogorsk, Chelyabinsk Region</p></bio><email xlink:type="simple">kwm@magtu.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>Савинов</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Savinov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., доцент, директор Института металлургии, машиностроения и материалообработки</p><p>455000, Россия, Челябинская обл., Магнитогорск, пр. Ленина, 38</p></bio><bio xml:lang="en"><p>(Eng.), Assist. Professor, Director of the Institute of Mechanical Engineering and Materials Processing</p><p>Magnitogorsk, Chelyabinsk Region</p></bio><email xlink:type="simple">savinov_nis@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>Феоктистов</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Feoktistov</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., заведующий кафедрой литейных процессов и материаловедения</p><p>455000, Россия, Челябинская обл., Магнитогорск, пр. Ленина, 38</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Professor, Head of the Chair “Foundry Processes and Materials Science”</p><p>Magnitogorsk, Chelyabinsk Region</p></bio><email xlink:type="simple">fna87@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>Постникова</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Postnikova</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>старший преподаватель кафедры механики</p><p>455000, Россия, Челябинская обл., Магнитогорск, пр. Ленина, 38</p><p> </p></bio><bio xml:lang="en"><p>Senior Lecturer of the Chair of Mechanics</p><p>Magnitogorsk, Chelyabinsk Region</p></bio><email xlink:type="simple">a-tus@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Магнитогорский государственный технический университет им. Г.И. Носова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Nosov Magnitogorsk State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>10</day><month>12</month><year>2020</year></pub-date><volume>63</volume><issue>10</issue><fpage>829</fpage><lpage>835</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Колокольцев В.М., Савинов А.С., Феоктистов Н.А., Постникова А.С., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Колокольцев В.М., Савинов А.С., Феоктистов Н.А., Постникова А.С.</copyright-holder><copyright-holder xml:lang="en">Kolokol’tsev V.M., Savinov A.S., Feoktistov N.A., Postnikova 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/1998">https://fermet.misis.ru/jour/article/view/1998</self-uri><abstract><p>Одним из путей повышения экономической эффективности работы литейного предприятия является снижение себестоимости изделия за счет уменьшения брака, весомая доля которого образуется ввиду возникновения горячих и холодных трещин в процессе затвердевания и охлаждения в системе «отливка – форма». Образование трещин происходит из-за силового взаимодействия отливки с формой. В настоящее время используется ряд подходов к определению величины напряженного состояния в материале отливки и, соответственно, определению величины силового взаимодействия. В работе рассматривается разработанная оценка напряженно-деформированного состояния системы «отливка – форма», которое определяется по сопротивлению деформации формовочной смеси. Изменение сопротивления деформации формовочной смеси носит сложный характер ввиду многофакторности процесса взаимосвязи возникающих напряжений с тепловым и компонентным составом слоя песчано-глинистой формы. В работе исследовалось влияние геометрических параметров и теплофизических свойств отливки на сопротивление деформации формовочной смеси. Разработана математическая модель, учитывающая теплопередачу между отливкой и формой, нарастание сухого слоя формы и миграцию влаги в слое песчано-глинистой смеси. На основе математического моделирования проведен количественный анализ влияния теплофизических свойств отливки: теплопроводности, объемной теплоемкости, теплоты кристаллизации, а также геометрических параметров в виде толщины стенки отливки на податливость сырой песчано-глинистой формовочной формы влажностью 5 %, выраженной через среднее сопротивление деформации под элементом затруднения длиной 100 мм. Установлено, что исследование изменения вышеперечисленных факторов в сторону увеличения в фиксированный момент времени повышает среднее значение сопротивления деформации. Показана количественная взаимосвязь выделившегося тепла с ростом сухого слоя формовочной смеси. Отмечено, что динамика изменения средней температуры не всегда совпадает с ростом сопротивления деформации формовочной смеси.</p></abstract><trans-abstract xml:lang="en"><p>One of the ways to increase economic efficiency of the foundry is to reduce the product cost by reducing scrap, a significant proportion of which is formed due to formation of hot and cold cracks during solidification and cooling in the casting-mold system. The formation of cracks occurs due to the force interaction of casting with mold. Currently, a number of approaches are used to determine the value of stress state in the casting material and, accordingly, to determine the value of force interaction. The paper considers the developed estimation of stress-strain state of the casting-mold system, which is determined by deformation resistance of the molding mixture. Change in deformation resistance of the molding mixture is complex due to the multi-factor nature of resulting stresses interaction with thermal and component composition of the sand-clay layer. We have studied the influence of geometric parameters and thermophysical properties of the casting on deformation resistance of the molding mixture. A mathematical model was developed that takes into account the heat transfer between casting and mold, increase in mold dry layer, and the migration of moisture in layer of the sand-clay mixture. On the basis of mathematical modeling, we have made a quantitative analysis of the influence of thermophysical properties of casting (thermal conductivity, volumetric heat capacity, heat of crystallization, geometric parameters) on ductility of raw sand-clay mold with humidity of 5 % expressed in terms of the average resistance to deformation under an obstruction element 100 mm long. It was established that increase in the above-mentioned factors, at a fixed time, increases the average value of deformation resistance. The quantitative relationship of the released heat with growth of the dry layer of the molding mixture is described. It was noted that dynamics of changes in the average temperature does not always coincide with increase in deformation resistance of the molding mixture.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сопротивление деформации</kwd><kwd>геометрические параметры</kwd><kwd>теплофизические свойства</kwd><kwd>податливость</kwd><kwd>теплота кристаллизации</kwd><kwd>система «отливка – форма»</kwd><kwd>теплопроводность</kwd><kwd>песчано-глинистая форма</kwd></kwd-group><kwd-group xml:lang="en"><kwd>deformation resistance</kwd><kwd>geometric parameters</kwd><kwd>thermal properties</kwd><kwd>ductility</kwd><kwd>heat of crystallization</kwd><kwd>casting-mold system</kwd><kwd>thermal conductivity</kwd><kwd>sand-clay form</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">Куликов Б.П. Истомин С.П. 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