METHOD FOR BRINGING A PLURALITY OF STEEL SLABS TO ROLLING TEMPERATURE IN A FURNACE

摘要

ABSTRACT OF THE DISCLOSUREA method for bringing a plurality of steelslabs to rolling temperature uses a furnace having acontrollable energy supply. To accommodatevariation of slab temperature at entry, especiallymixing of cold and hot slabs, at least one virtualslab corresponding to a group of the steel slabs isdetermined, and the energy supply is adjusted independence on the desired mean temperature at exitfrom the furnace of the virtual slab. Suitably thefurnace has at least two zones each with anindividually controllable energy supply, and virtualslabs are determined for the slabs in each zone.Then the energy supply in each zone is adjusted independence on the desired mean temperature at exitfrom the furnace of the virtual slab of that zoneand preceding zones.