DEVELOPMENT OF THE PRODUCTION OF HIGH THICKNESS-UNIFORMITY SHEET IN THE NEW TANDEM COLD STRIP MILL AT KASHIMA-STEEL-WORKS

The new cold strip mill at Kashima Steel Works has been designed for h igh-thickness uniformity and strip flatness. Stands 1 to 3 use the pai r-cross technology, For the gauge accuracy in the longitudinal directi on, an advanced AGC system combining newly developed technologies is u sed, It is characterized by a non-interactive control of gauge and ten sion, Strip profile is mainly controlled at the three PC stands. A num erical simulation model of profile and flatness is used to optimize th e setting of the actuators, The system can operate in two modes : ''fl atness'' mode or ''edge drop-free'' mode.