Publisher : Institute of Control, Robotics and Systems
DOI : 10.5302/J.ICROS.2015.15.0084
Title & Authors
A Study of a Flying Touch Method to Reduce Slab Scratches in a Hot Rolling Process Using a Simulation System Kim, Sung Jin; Kim, Hyun Hee; Yoon, Sung Min; Lee, Min Cheol;
In the conventional hot rolling process, the defects of products such as scratches occur due to impact and friction. Impact occurs as a result of the contact of between rollers and the slab. Also, friction occurs in the rolling process. To improve these defects, a variety of processes were developed. The flying touch method is also one of the processes to reduce defects and uses a movable upper roller. To use this unfixed roller, the impact and frictions between rollers and the slab should be minimized. This paper proposes a hot rolling process simulator to verify and test the efficiency of the flying touch method. The simulator was designed to verify the method. This paper also proposes a new impact reducing method and velocity synchronization method which are simulated to realize the method.
hot rolling;flying touch;simulator;slab scratch;synchronization;
J. Y. Lee, I. H. Noh, H. S. Park, and S. C. Won, "Development of hardware simulator for looper tension control," Institute of Control Robotics and Systems (in Korean), Conference 2009, 9, pp. 898-903, 2009.
W. H. Lee and S. R. Lee, "Development of hot rolling process analysis simulator and its application(I)," Transactions of Materials Processing (in Korean), vol. 8. no. 1, 1999.
Y. H. Moon, M. S. Chun, S. H. Lee, and J. J. Yi, "Development of forward slip model in hot strip mill," Korea Society of Mechanical Engineers (in Korean), vol. 19, no. 7, pp. 1597-1603, 1995.
N. A. Fleck and K. L. Johnson, "Towards a new theory of cold rolling thin foil," International Journal of Mechanical Sciences, vol. 29. no. 7. pp. 507-624, 1987.
Y. J. Choi and M. C. Lee, "PID sliding mode control for steering of lateral moving strip int hot strip rolling," International Journal of Control, Automation, and Systems, vol. 7, no. 3, pp. 399-407, 2009.
J. T. Moura, H. Elmali, and N. Olgac, "Sliding mode control with sliding perturbation observer," Journal of Dynamic Systems, Measurement, and Control, vol. 119, pp. 657-665, Dec. 1997.
P. ZAhumenskY, M. Merwin, "Evolution of Artificial Defects from Slab to Rolled Products," Journal of Materials Processing Technology, 196 (1-3) pp. 266-278, 2008.
S. J. Heo, S. H. Lee, S. J. Lee, J. B. Lee, and B. M. Kim, "Minimization of crop length by sizing press in hot rolling mill," Transactions of Materials Processing (in Korean), vol. 17, no. 8, pp. 619-626, 2008.
C. J. Park and S. G. Choi, "A study on the looper stabilization in hot rolling process(II)," Proc. of the 14 Korea Automatic Control Conference (in Korean), Oct. pp. 89-92, 1999.
S. M. Yoon, W. J. Kim, and M. C. Lee, "Impedance model based bilateral control for force reflection of a laparoscopic surgery robot," Journal of Institute of Control, Robotics and System (in Korean), vol. 20, no. 8, pp. 801-806, 2014.
S. J. Lee and S. W. Kim, "Classifying scratch defects on billets using image processing and SVM," Journal of Institute of Control, Robotics and System (in Korean), vol. 19, no. 3, pp. 256-261, 2013.