ABSTRACT
Although various attempts were made to develop a sensor for the measurement of friction in a mill, they have not produced a viable instrument as yet (Legrand, Lavalard, and Martins, 2012). Therefore, mathematical modeling is the only way to estimate friction in an industrial hot strip mill, essentially by calculating it from rolling force or torque. The models in general can be classied as empirical and rst-principles based. These empirical, black-box models are reviewed rst. Those employing rst principles are analysed next, followed by a practical model for hot strip rolling based on the analyses of plant data from the commercial mill.
