Patent ID: 6185970
Filing Date: 2001-02-13
Classification: B21B,C21D

Abstract:
A method of controlling a cooling line of a mill train for rolling steel sheets and strips, the method comprising the cyclically conducted steps of:calculating in advance a reference temperature profile between a site of finishing train pyrometer and a site of a coiler pyrometer based on a setup reference temperature;calculating actual temperature profile of one of a sheet and a strip between the site of the finishing train pyrometer and the site of the coiler pyrometer based on actual adjusted process parameters of the cooling line and specific process conditions of the one of a sheet and a strip; andcontrolling individually the process parameters along the cooling line at particular locations of the cooling line where the actual temperature of the one of a sheet and strip deviates from the set temperature by comparing the calculated actual temperature profile with the reference temperature profile at the particular locations of the cooling line.