USING OF FREQUENCY MODELS FOR TECHNICAL DIAGNOSTICS DISREPAIRS OF METALLURGICAL EQUIPMENT

  • Oleksii Hrechanyi National Metallurgical Academy of Ukraine
  • Yuri Kobrin National Metallurgical Academy of Ukraine
  • Tatiana Vasilchenko Engineering Institute, of Zaporizhzhia National University
  • Aleksandr Ignatiev PJSC «Zaporozhstal»
  • Rаdyslav Kuzmenko Engineering Institute, of Zaporizhzhia National University
  • Irene Shevchenko Engineering Institute of Zaporizhzhia National University
Keywords: technical diagnostics, deterministic frequencies, frequency simulations, frequency model, technical condition

Abstract

The main objective of technical diagnostics is the logical continuation and development of control tasks, that is, the purpose of monitoring and diagnostics is aimed at determining in which of a predetermined set of conditions the object under investigation is located. The diagnostic procedure itself contains a certain set of control operations of the entire object as a whole, as well as its individual elements. In this case, it is necessary to determine which of the operations need to be carried out and in what sequence, how, in order to specify the malfunction, to process the results of these operations. Modeling is one of the most reliable methods and effective research tools for both simple and complex technical systems, at all stages of their life cycle. In order to reduce the volume of expensive and lengthy experimental studies, it is advisable to carry out diagnostic modeling of defects, that is, a physical or diagnostic interpretation of the relationship between the state space and the space of diagnostic signs is established using the diagnostic model of the object. Kinematic analysis applying to the problems of vibration diagnostics consists in determining the angular speeds of rotation (or frequencies) of individual parts of the mechanism, depending on the frequency of rotation of the electric motor. Frequency modeling is based on the polyharmonic representation of oscillations whose frequency is determined with the frequency of manifestation of defects. The purpose of frequency modeling is to identify the rotational speeds of all the moving elements of the machines, including the frequency of the teeth and the rotational speed of the elements of the rolling bearings (rolling elements, rings, cage). The possibility of using frequency models as diagnostic models for metallurgical equipment using the example of a sheet straightening machine is considered. The influence of the operating speeds of the electric motor of the drive of the sheet straightening machine on its overall performance is established. The obtained frequency map of defects of the drive unit allows the analysis of various diagnostic features for drive failures of the plate straightening machine.

References

1. Диагностирование механического оборудования металлургических предприятий: монография / В. Я. Седуш, В. М. Кравченко, В. А. Сидоров та ін. Донецк : ООО «Юго-Восток, ЛТД», 2004. 100 с.
2. Белодеденко С. В. Развитие методов расчета и исследований прочности металлургического оборудования. Металлургическая и горнорудная промышленность. 2009. № 4. С. 94-98.
3. Кравченко В. М., Сидоров В. А., Седуш В. Я. Техническое диагностирование механического оборудования: учебник. Донецк : ООО «Юго-Восток, ЛТД», 2009. 459 с.
4. Руденко В. И, Ошовская Е. В., Нижник Н. В. Обоснование рационального выбора конструкции шпиндельного соединения. Металлургические процессы и оборудование. 2006. № 1. С. 28-32.
5. Вибрации в технике : Справочник / В. Н. Челомей, М. Д. Генкин, В. В. Алесенко та ін. – В 6-ти т. Т. 5. Измерения и испытания. Москва : Машиностроение, 1981. 496 с.
6. Жук А. Я., Желябина Н. К., Клевцов О. М., Малышев Г. П. Техническая диагностика. Контроль и прогнозирование : монография. Запорожье : РИО ЗГИА, 2008. 500 с.
7. Бигус Г. А., Даниев Ю. Ф., Быстрова Н. А., Галкин Д. И. Диагностика технических устройств. Mосква : МГТУ им. Н.Э. Баумана, 2014. 615 с.
8. Вибродиагностика – теория. Диагностические модели механизмов: задачи и методы построения // Лаборатория Диагностики оборудования при кафедре «Технологическое оборудование предприятий хлебопродуктов» Московского Государственного Университета пищевых производств. Режим доступу до ресурсу: URL: http://sig-nal.narod.ru/theory.htm (дата звернення: 20.07.2019).
9. Черменский О. Н., Федотов Н. Н. Подшипники качения: Справочник-каталог. Москва : Машиностроение, 2003. 576 с.
10. Копылов И. П., Клюев Б. К. Справочник по электрическим машинам: в 2 т. Т. 1. Москва : Энергоатомиздат, 1988. 456 с.
Published
2020-03-01
How to Cite
Hrechanyi , O., Kobrin , Y., Vasilchenko , T., Ignatiev , A., Kuzmenko , R., & Shevchenko, I. (2020). USING OF FREQUENCY MODELS FOR TECHNICAL DIAGNOSTICS DISREPAIRS OF METALLURGICAL EQUIPMENT. Scientific Journal "Metallurgy", (2(42), 94-99. Retrieved from http://metal.journalsofznu.zp.ua/index.php/journal/article/view/39

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