Siberian State Industrial University (Novokuznetsk, Russia):

A. N. Savelyev, Cand. Eng., Associate Prof., Chair of Mechanics and Machine-building, e-mail: savelyev2000@mail.ru
S. S. Severyanov, Post-Graduate, Chair of Mechanics and Machinebuilding
O. D. Prokhorenko, Cand. Eng., Senior Lecturer, Chair of Heat Power Engineering and Ecology

Statistical data on operational reliability and maintainability of components of a continuous casting machine (CCM) has been compiled. The statistical data analysis showed that all units of the CCM technological line (TL) during the implementation of the technological process periodically fail. This necessitated their continuous improvement. As a result of the work done, it was possible to achieve a stable implementation of operation modes, as well as repair and restoration measures on these units. The obtained statistical characteristics on the CCM operation make it possible to evaluate the features of functioning of the improved units for the purpose of simultaneous production of products, maintenance and repair. The use of the results presented in this work when creating new CCMs or when improving existing ones contributes to a rational approach to set the timelines for their fine-tuning to a stably functioning state, to reduce the degree of modernization of existing units and provides an opportunity to improve the conditions for implementation of all operations related to planning maintenance and repair of these technological lines.

1. Kolegaev R. N., Melnikova К. I., Krivoberets V. I. The effectiveness of the enterprise’s and association’s repair service. Kiev: Tekhnika, 1976. 160 p.
2. Savelyev А. N. Design of homeostasis rolling complexes. Izvestiya vuzov. Chernaya Metallurgiya. 1991. No. 12. pp. 78–82.
3. Sotnikov А. L., Nagorny V. М., Orobtsev А. Yu. et. al. Regulation of operating modes and a vibration level of the caster mold oscillating unit. Metallurgicheskie protsessy i oborudovanie. 2013. No. 1. pp. 44–54.
4. Savelyev А. N. Features of formation of workable technological systems. Izvestiya vuzov. Chernaya Metallurgiya. 1998. No. 8. pp. 69–75.
5. Antsupov А. V., Antsupov А. V. (Jr.), Antsupov А. P. Ensuring the reliability of machines friction units at the design stage. Magnitogorsk: Izdatelstvo Magnitogorskogo gosudarstvennogo tekhnicheskogo universiteta imeni G. I. Nosova. 2013. 293 p.
6. Fisher L., Bausch J., Hullen I., Frohling Ch., Rzepczyk М., Brand Т., Knopp I., Brass H.-G. The concepts of perspective modernization using tested and approved continuous casting technology. Chernye Metally. 2018. No. 9. pp. 40–47.
7. Wiens O., Moβner W. Improvement of quality of continuously cast billets via new coating for mould surface. Chernye Metally. 2016. No. 7. pp. 29–36.
8. Schimmel R., Kirchner М. Modernization of moulds to provide efficiency rise of continuous casting of 70 mm slabs. Chernye Metally. 2018. No. 3. pp. 24–26.
9. Savelyev А. N. Structural features of a stably functioning complex technical system. Izvestiya vuzov. Chernaya Metallurgiya. 1996. No. 12. pp. 53–58.
10. Severtsev N. A. Reliability of complex systems in operation and execution: tutorial for higher education institutions. Moscow: Vysshaya shkola, 1989. 432 p.
11. Reliability in engineering: handbook. Edited by Shashkin V. V. Karzov G. P. St. Petersburg: Politekhnika, 1992. 719 p.
12. Shestakov N. I., Lukin S. V., Ansheles V. R. Improving the steel continuous casting machine`s cooling system. Cherepovets: Izdatelstvo ChGU, 2003. 100 p.
13. Kalyagin Yu. А., Lukin S. V., Bormosov N. А. Thermal processes in the continuous casting machine›s secondary cooling zone. Cherepovets: Izdatelstvo ChGU, 2005. 168 p.
14. Manasaki J., Miahara S. et al. The control of the surface temperature in the continuous slab casting by the on-line digital computer. Contr. Sci. And Technol. Progr. Soc. Proc. 8^th. Trenni. World Cingr. Int. Fed. Autom. Confr. Kyoto, 24–28, Aug., 1981, Vols: Oxfordetal. 1982. pp. 2639–2644, Discuss. p. 2657.
15. Bakharev V. P., Kulikov М. Yu., Bortnikov I. I., Skhirtladze А. G. Designing in mechanical engineering: tutorial in 2 parts: part 1. General methods for designing and calculation. Technics reliability. Staryi Oskol: ООО ТNТ, 2010. 248 p
16. Kramer G. Mathematic methods of statistics. Moscow: Mir, 1975. 648 p.
17. Savelyev А. N. Features of evolution process of complex technical system formation. Establishment of technics philosophy: technical reality and technique. Moscow: Tsentr sistemnykh issledovaniy, 1997. pp. 155–165.
18. Kravchenko I. N., Puchin Е. А., Chepurin А. V. et. al. Estimation of machine and equipment reliability: theory and practice: tutorial. Moscow: Alfa-М; INFRA-М, 2012. 336 p.
19. Dhillon B., Singh Ch. Engineering reliability: new techniques and applications. Moscow: Mir, 1984. 318 p.
20. Grebenik V. М., Tsapko V. К. Reliability of metallurgical equipment (evaluation of operation reliability and durability): reference book. Moscow: Metallurgiya, 1989. 592 p.

21. Kapur K., Lamberson L. Reliability in engineering design. Moscow: Mir, 1980. 604 p.
22. Ryabinin I. А. Reliability and safety of structurally complex systems. St. Petersburg: Politekhnika, 2000. 248 p.
23. Yurkevich V. V., Skhirtladze А. G. Reliability and diagnostics of technological systems: tutorial for higher education institutions. Moscow: Izdatelsky tsentr «Akademik», 2011. 304 p.
24. Ho K., Pehlke R. Modeling of steel solidifi kation using the general finite differancemetod. Proc. 6^th Process Technol. Conf. and 5^th int. Iron and Steel. Congr. Apr. 6-9. 1986. Warrendale. 1986. Vol. 6. pp. 853–866.
25. Mizikar E. Mathematical heat transfer model for solidifi cation of continuous cast steel slabs. Trans. of the Metallurgical Society of AIME. 1967. Vol. 239. No. 11. pp. 1747.
26. Evstigneev A. I., Odinokov V. I., Dmitriev E. A., Petrov V. V. Mathematical modeling of stress-strain state of multilayer steel molds. In book: International Conference on Advanced Material Engineering & Technology 2015 Kaohsiung City, Taivan 4^th-5^th December 2015. 2016. Vol. 857. pp. 565–572.
27. Savelyev А. N., Severyanov S. S., Tarasov М. I. Evaluation of a mode for equipment revitalization of the continuous caster technological line. Vestnik Sibirskogo gosudarstvennogo industrialnogo universiteta. 2016. No. 4 (18). pp. 36–40.
28. Savelyev А. N., Timoshenkov Yu. G., Bich Т. А. Estimation of indicators of non-failure operation and units maintainability for steadily working continuous caster technological line. Izvestiya vuzov. Chernaya metallurgiya. 2006. No. 6. pp. 57–60.