Method of and system for controlling a cooling line of a mill train
AssigneeSMS Schloemann-Siemag Aktiengesellschaft
InventorSiegfried Latzel
Life of this patent
Estimating the term…
Abstract
A method of controlling a cooling line of a mill train for rolling steel strips and sheets, with the method including calculating reference temperature conditions in the cooling line based on a preset reference temperature, calculating actual strip temperature conditions in the cooling line dependent on actual adjusted process parameters of the cooling line and specific process conditions of a strip, and controlling individually the process parameters of the cooling line by comparing the calculated actual temperature conditions with the reference temperature conditions; and a system for effecting the method.
Claims10
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;
- and
- controlling 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.
A system for controlling a cooling line of a mill train for rolling strips and sheets and including a finishing train pyrometer provided between the last rolling stand of the finishing train and a beginning of the cooling line for measuring the temperature of a movable strip or sheet and a coiler pyrometer for measuring the strip or sheet temperature and provided between an end of the cooling line and the coiler, the system comprising:
- means for 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;
- means for 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;
- and
- means for controlling individually the process parameters at particular locations of the cooling line by comparing the calculated actual temperature profile with the reference temperature profile at the particular locations.
Dependencies are inferred from the claim text.