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Fault Diagnosis of Roll Shape Under the Speed Variation in Hot Rolling Mill  

Lee, Chang-Woo (Department of Mechanical Engineering, Konkuk University)
Kang, Hyun-Kyoo (Department of Mechanical Engineering, Konkuk University)
Shin, Kee-Hyun (Department of Mechanical and Aerospace Engineering, Konkuk University)
Publication Information
Journal of Mechanical Science and Technology / v.20, no.9, 2006 , pp. 1410-1417 More about this Journal
Abstract
The metal processing system usually consists of various components such like motors, work rolls, backup rolls, idle rolls, sensors, etc. Even a simple fault in a single component in the system may cause a serious damage on the final product. It is therefore necessary to diagnose the faults of the components to detect and prevent system failure. Especially, the defects in a work roll are critical to the quality of strip. It is especially difficult to detect faults of a roll by using the existing frequency analysis method if the speed of the roll is changing. In this study, a new diagnosis method for roll eccentricity under the roll speed changes was developed. The new method was induced from analyzing the rolling mechanism by using rolling force models, radius-speed relationship, and measured rolling force, etc. Simulation results by using the field data show that the proposed method is very useful.
Keywords
Diagnosis; Eccentricity; Fast Fourier Transform (FFT); Rolling Force; Roll Shape Fault; Speed Variation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 0
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1 Bodson, M. and Douglas, S. C.. 1997, 'Adaptive Algorithm for the Rejection of Periodic Disturbances with Unknown Frequency,' Automatica, Vol. 33, No. 12, pp. 2213-2221   DOI   ScienceOn
2 Shin, K. H., Jang. J. I., Kang, H. K. and Song, S. H., 2003, 'Compensation Method for Tension Disturbance due to an Unknown Roll Shape in a Web Transport System,' IEEE Transactions on Industry Applications, Vol. 39, No. 5, September/October   DOI   ScienceOn
3 Tahk, K. M. and Shin, K. R., 2002. 'A Study on the Fault Diagnosis of Roller-Shape Using Frequency Analysis of Tension Signals and Artificial Neural Networks Based Approach in a Web Transport System,' KSME International Journal, Vol. 16, No. 12, pp. 1604-1612   과학기술학회마을
4 The Iron and Steel Institute of Japan, 1991, Handbook of Steel Rolling; Volume Three, Sehwa Inc.
5 Shin, K. H. and Hong, W. K., 1998, 'Real-time Tension Control in a Multi-stand Rolling System,' KSME International Journal, Vol. 12, No. 1, pp. 12-21
6 Shin, K. H., 2000. Tension Control, TAPPI press, Technology Park/Atlanta
7 Kugi, A., Haas, W., Schlacher, and Aistleitner, K., 2000, 'Active Compensation of Roll Eccentricity in Rolling Mills,' IEEE Transactions on Industry Applications, Vol. 36, No. 2, Marchi/April   DOI   ScienceOn
8 Lee, C. W., Kang, H. K. and Shin, K. H., 2004, 'A Study on the Fault Diagnosis of the 3-D Roll Shape in Cold Rolling,' KSME International Journal, Vol. 18, No. 12   과학기술학회마을
9 Park, C. J., Hong, S. C., Han, K. B. and Choi, S. G., 2002, 'Development of Thickness Diagnosis System in Hot Strip Mill,' Proceedings of the KAMES 2002 Joint Symposium A, pp.1028-1033
10 Ginzberg, V. B. and Ballas, R., 2000, Flat Rolling Fundamentals, Marcel Dekker, Inc., New York and Basel