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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">10.17073/0368-0797-2019-12-972-978</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-1778</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>НАУКА ПРОИЗВОДСТВУ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SCIENCE APPLICATION</subject></subj-group></article-categories><title-group><article-title>Оценка работоспособности агрегатов технологической линии «Машина непрерывного литья заготовок»</article-title><trans-title-group xml:lang="en"><trans-title>Assessment of units’ performance of CCM technological line</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>Савельев</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Savel’ev</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры механики и машиностроения</p><p>654007, Новокузнецк, Кемеровская обл., ул. Кирова, 42</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Professor of the Chair of Mechanics and Machine Engineering</p><p>Novokuznetsk, Kemerovo Region</p></bio><email xlink:type="simple">Savelyev2000@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>Северьянов</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Sever’yanov</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры механики и машиностроения</p><p>654007, Новокузнецк, Кемеровская обл., ул. Кирова, 42</p></bio><bio xml:lang="en"><p>Postgraduate of the Chair of Mechanics and Machine Engineering</p><p>Novokuznetsk, Kemerovo Region</p></bio><email xlink:type="simple">Zhiha14@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Сибирский государственный индустриальный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Industrial University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>14</day><month>01</month><year>2020</year></pub-date><volume>62</volume><issue>12</issue><fpage>972</fpage><lpage>978</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Савельев А.Н., Северьянов С.С., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Савельев А.Н., Северьянов С.С.</copyright-holder><copyright-holder xml:lang="en">Savel’ev A.N., Sever’yanov S.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/1778">https://fermet.misis.ru/jour/article/view/1778</self-uri><abstract><p>Для оценки эксплуатационной надежности работы технологических агрегатов машины непрерывного литья заготовок (МНЛЗ) применен количественный показатель работоспособности. Этот показатель характеризует способность технического изделия выполнять работу с определенной вероятностью или вероятность того, что данный объем работы будет выполнен. Показатель интересен тем, что при переходе через оптимальное значение способность машины выполнить возложенный на нее объем работы начинает снижаться. Точка оптимума продолжительности работы машины ограничивает рациональный временной участок ее использования без ремонта с максимальной эффективностью. С использованием статистического материала, полученного в течение 15 лет эксплуатации машины непрерывного литья заготовок, оценена работоспособность входящих в МНЛЗ агрегатов как технологической линии. При этом все агрегаты разделены на три принципиально отличающиеся по условиям назначения группы: работающие с жидким, с затвердевающим и с затвердевшим металлом. Работоспособность агрегатов каждой группы оценена абсолютными и относительными величинами. При оценке работоспособности по абсолютным значениям наибольшей работоспособностью обладают агрегаты, работающие с жидким металлом. Рациональный срок службы от ремонта до ремонта составляет 270 ч с безотказностью 0,51. Наименьшая работоспособность (в пределах 150 ч) наблюдается у агрегатов, работающих с затвердевающим металлом, безотказность 0,6. Величина работоспособности в относительных единицах в среднем у агрегатов всех групп практически одна и та же, что позволяет использовать этот показатель на ранней стадии оценки работоспособности как МНЛЗ в целом, так и ее элементов.</p></abstract><trans-abstract xml:lang="en"><p>To assess operational reliability of technological units of continuous casting machine (CCM), quantitative indicator of efficiency has been applied. This indicator of efficiency describes ability of technical product to perform work assigned to it with a certain probability, or expectancy that this amount of work will be performed. This indicator is interesting for its optimal value, which being surpassed decreases machine ability to perform the necessary amount of work. Thus, the optimum point of machine operating time limits rational time portion of its use without repair with maximum efficiency. Workability of CCM as technological line as well as operability of its units was evaluated using statistical material obtained during the 15 years of operation of billet CCM. So, all units were divided into three essentially different groups according to conditions of their appointment, i.e. a group of units working with liquid metal, a group of units working with solidifying metal and a group of units working with solidified metal. Performance of each group of units is estimated in absolute and relative values. When assessing performance of CCM units in absolute values, units operating with liquid metal have the greatest performance. Its rational service life from repair to repair is 270 hours with reliability of 0.51. The smallest efficiency was manifested in units working with solidified metal. Its performance lasts 150 hours with reliability of 0.6. Average efficiency in relative units of all groups of aggregates is almost the same, which makes it possible to use this indicator at an early stage of assessing efficiency of both machine units and CCM as a whole.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>работоспособность</kwd><kwd>технологическая линия</kwd><kwd>машина непрерывного литья заготовок</kwd><kwd>металл жидкий</kwd><kwd>металл затвердевающий</kwd><kwd>металл затвердевший</kwd></kwd-group><kwd-group xml:lang="en"><kwd>performance</kwd><kwd>technological line</kwd><kwd>continuous casting machine</kwd><kwd>liquid metal</kwd><kwd>solidifying metal</kwd><kwd>solidified metal</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">Фишер Л., Бауш И., Хюллен И., Фрелинг К., Ржепчик М., Брант Т., Кнопп И., Брасс Х.-Г. 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