Document Rev. Met. Paris, N°4 (April 2008), pp. 212-217
DOI: 10.1051/metal:2008033
ArcelorMittal Tubarao hot skin pass - Flatness improvements in thin gauges
C.-N. da Silva, F.-C. Dornelas, L.-F. da Silva Volpato, L.-T. Sequeira, G. de Martin Sarnaglia, Q.-R. Sobrinho and F.-G. da Silva Araújo(Published online: 1 May 2008)
Abstract
The main purpose of ArcelorMittal Tubarao skin pass is to improve
the flatness in thin gauges hot rolled strips. Since the start-up in
2002 several actions have been implemented and a consistent
evolution of quality and process control has been reached:
- The philosophy of production scheduling along the rolls campaign to minimize the effect of roll wear;
- The definition of optimum target elongations to keep as constant as possible the roll forces and avoid roll bending changes;
- The automation of bending forces control according to characteristics of the strip and the rolls.