DIAGNOSTICS OF ELECTROMECHANICAL DRIVE OF THE CCM MOLD OSCILLATION MECHANISM
https://doi.org/10.17073/0368-0797-2016-5-334-338
Abstract
The vibrometry method of diagnosing the destruction of the eccentric shaft of the oscillation mechanism drive of the continuous casting machine mold was developed based on the research of influence of fatigue fracture of the shaft on the amplitude-frequency characteristic and the vibration level of the oscillation mechanism. Using the Shengli theory to determine the current crack length of the eccentric shaft, the dependence of the shaft stiffness variation with time was derived. The study of this dependence has shown that decreasing shaft stiffness leads to the increase of total vibration level and spectrum of fluctuations of the drive of mold oscillation mechanism. The obtained results allowed to establish the discernment boundaries of status (integrity) of the eccentric shaft of the drive of the mold oscillation mechanism by the vibration level depending on the rotational speed of the motor shaft on the basis of GOST ISO 10816-1-97. The proposed vibrometry method for diagnosing the drive of the CCM mold mechanism is focused on the use of widely available portable vibration analyzers.
About the Author
A. L. Sotnikov
Donetsk National Technical University, Donetsk
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair “Mechanical Equipment of Ferrous Metallurgy Plants”, Head of the Research Department
References
1. Radyuk A.G., Gorbatyuk S.M., Gerasimova A.A. Use of electricarc metallization to recondition the working surfaces of the narrow walls of thick-walled slab molds. Metallurgist. 2011, vol. 55, Issue 5–6, pp. 419–423.
2. Sotnikov A.L. Preduprezhdenie otklonenii parametrov kolebatel’nogo dvizheniya kristallizatora MNLZ na osnove razvitiya metodov diagnostiki mekhanizma kachaniya: dis. kand. tekhn. nauk [The prevention of parameters divergence of oscillatory movement of CC machine crystallizer on the basis of development of tilting mechanism diagnostics techniques: Cand. Sci. Diss.]. Donetsk: DonNTU, 2008, 205 p. (In Russ.).
3. Sotnikov A.L. The diagnostic model for the bearing units of CCM mold oscillation mechanism. Vibratsiya mashin: izmerenie, snizhenie, zashchita. 2008, no. 4 (15), pp. 48–54. (In Russ.).
4. Sotnikov A.L. The vibrometry method of diagnosing the bearings of the mold lever mechanism. Vibratsiya mashin: izmerenie, snizhenie, zashchita. 2010, no. 3 (22), pp. 27–32. (In Russ.).
5. Subbotin G., Pustoshnyi D., Popov V. Vibration diagnostics of the bearings of the eccentric shafts of the CCM mold oscillation mechanism. NM-Oborudovanie. 2007, no. 2, pp. 19–23. (In Russ.).
6. Sotnikov A.L., Nagornyi V.M., Orobtsev A.Y., Ptukha S.V., Rodionov N.A. Regulation of operating modes and vibration level of the CCM mold oscillating mechanism. Metallurgicheskie protsessy i oborudovanie. 2013, no. 1, pp. 44–54. (In Russ.).
7. Grebenik V.M., Tsapko V.K. Nadezhnost’ metallurgicheskogo oborudovaniya (otsenka ekspluatatsionnoi nadezhnosti i dolgovechnosti). Spravochnik [The reliability of metallurgical equipment (evaluation of operational reliability and durability). Guide]. Moscow: Metallurgiya, 1980, 344 p. (In Russ.).
8. Gorbatyuk S.M. etc. Detali mashin i osnovy konstruirovaniya: uchebnik [Machine parts and design fundamentals: Textbook]. Gorbatyuk S.M. ed. Moscow: Izd. Dom MISiS, 2014, 377 p. (In Russ.).
9. Zhernakov V.S., Kulikov V.S., Mardimasova T.N. Raschet valov na staticheskuyu, ustalostnuyu prochnost’ i zhestkost’: Uchebnoe posobie [Calculation of shafts for static, fatigue strength and stiffness: Tutorial]. Ufa: UGATU, 2003, 76 p. (In Russ.).
10. Zaloga V.A., Nagornyi V.V. Calculation of indicators of destruction of the cutting tool. Vіsnik SumDU. Seriya Tekhnichni nauki. 2012, no. 2, pp. 101–111. (In Russ.).
11. Crandall S.H., Mark W.D. Random Vibrations in Mechanical Systems. Academic Press, New York, 1963. (Russ.ed.: Crandall S. Sluchainye kolebaniya. Moscow: Mir, 1967, 356 p.).
12. Shanley F.R. A theory of fatigue based on unbonding during reversed slip / The RAND Corporation. Report, no. P-350. Santa Monica (USA): The RAND Corporation, 1952, 93 p.
13. Vibroanalizator SD-21. Rukovodstvo po ekspluatatsii [Vibration analyzer SD-21. Manual]. St. Petersburg: OOO “Assotsiatsiya VAST”, 2009, 111 p. (In Russ.).
14. Smirnov A.N., Antykuz O.V. Comprehensive parameter control of CCM mold oscillation. Metall i lit’e Ukrainy. 2009, no. 1–2, pp. 57–61. (In Russ.).
15. Gol’din A.S. Vibratsiya rotornykh mashin [Vibration of rotor machines]. Moscow: Mashinostroenie, 1999, 344 p. (In Russ.).
Review
For citations:
Sotnikov A.L. DIAGNOSTICS OF ELECTROMECHANICAL DRIVE OF THE CCM MOLD OSCILLATION MECHANISM. Izvestiya. Ferrous Metallurgy. 2016;59(5):334-338. (In Russ.) https://doi.org/10.17073/0368-0797-2016-5-334-338
Views:
707
Email this article 