The main purpose of ArcelorMittal Tubarao skin pass is to improvethe flatness in thin gauges hot rolled strips. Since the start-up in2002 several actions have been implemented and a consistentevolution of quality and process control has been reached:
The philosophy of production scheduling along the rolls campaignto minimize the effect of roll wear;
The definition of optimum target elongations to keep as constantas possible the roll forces and avoid roll bending changes;
The automation of bending forces control according tocharacteristics of the strip and the rolls.