Adaptation of a roll model

Abstract

A method for operating a storage device for two rolls in a roll stand for rolling metal. The storage device is component part of the roll stand or can be positioned relative to the roll stand so that the rolls can be transferred from the roll stand into the storage device or vice versa. A measuring system is provided which detects the temperatures and/or the diameters of the rolls individually and independently of one another, at least at predefined detection positions, as viewed in the direction of the roll axes. After transmission to an automation unit that controls the roll stand, the unit can adapt a roll model, by means of which it repeatedly determines the temperatures and/or the diameters of the rolls, at predefined determination positions, in the direction of the roll axes, using operating data of the roll stand for the rolls of the same type.

1 . An operating method for a roll stand for rolling metal, comprising:
 rolling flat rolling stock between two rolls of a same type in the roll stand;   determining repeatedly, by an automation unit that controls the roll stand, at least one of temperatures and diameters of the two rolls, at least at predefined determination positions, as viewed in the direction of the roll axes, using a roll model and operating data of the roll stand for the rolls of the same type;   activating, based on the at least one of the temperatures and the diameters determined, the roll stand, so that a rolling gap of the roll stand is set during the rolling of the flat rolling stock, in accordance with setpoint inputs;   removing the two rolls from the roll stand;   transferring the two rolls into a roll changing carriage;   detecting at least one of detected temperatures and detected diameters of the two rolls in an automated manner, at least at predefined detection positions, as viewed in the direction of the roll axes, one of during the removing of the two rolls from the roll stand, during the transferring of the two rolls into the roll changing carriage, and immediately following the transferring operation, by a measuring system arranged one of on the roll stand and on the roll changing carriage;   transmitting automatically the at least one of the detected temperatures and the detected diameters to the automation unit, the automation unit adapted to associate the at least one of the detected temperatures and the detected diameters with the predefined detection positions;   comparing, by the automation unit, the at least one of the temperatures and the diameters determined by the roll model with the at least one of the detected temperatures and the detected diameters; and   adapting the roll model based on the comparing.   
     
     
         2 . The operating method of  claim 1 , wherein, for each roll, the at least one measuring system has a plurality of measuring devices that are fixed in location relative to a main body of the storage device, the at least one measuring system adapted to detect the at least one of the temperature and the diameter of a respective roll of the two rolls at one of the predefined detection positions, as viewed in the direction of the roll axes, by the plurality of measuring devices. 
     
     
         3 . The operating method of  claim 1 , wherein, for each roll, the at least one measuring system has a plurality of measuring devices that are movable relative to a main body of the storage device, the at least one measuring system adapted to detect the at least one of the temperature and the diameter of a respective roll of the two rolls in a respective subsection, including in each case at least one of the predefined detection positions, as viewed in the direction of the roll axes, by the plurality of measuring devices. 
     
     
         4 . The operating method of  claim 1 , wherein, for each roll, the at least one measuring system has a single measuring device, the single measuring device adapted to detect the at least one of the temperature and the diameter of a respective roll of the two rolls at all of the predefined detection positions, as viewed in the direction of the roll axes. 
     
     
         5 . The operating method of  claim 4 , wherein the single measuring device is arranged on a main body so as to be movable as viewed in the direction of the roll axes, the single measuring device adapted to be moved over an entire effective barrel length of the respective roll. 
     
     
         6 . The operating method of  claim 4 , wherein the single measuring device is arranged in a fixed location on a main body of the storage device so that the respective roll is moved past the single measuring device during transfer one of:
 from the roll stand into a roll changing carriage, and   from the roll changing carriage to the roll stand.   
     
     
         7 . The operating method of  claim 1 , further comprising:
 transmitting, from the at least one measuring system to an automation unit that controls the roll stand via a data link, at least one of the detected temperatures and the detected diameters; and   associating, by the automation unit, the at least one of the detected temperatures and the detected diameters with the predefined detection positions.   
     
     
         8 . A method for operating a storage device for two rolls of a same type in a roll stand for rolling metal, comprising:
 detecting, by at least one measuring system, at least one of a temperature and a diameter of the two rolls individually and independently of one another, at least at predefined detection positions, as viewed in a direction of roll axes of the two rolls;   transmitting, from the at least one measuring system to an automation unit that controls the roll stand via a data link, the at least one of the temperature and the diameter; and   associating, by the automation unit, the at least one of the temperature and the diameter with the predefined detection positions.   
     
     
         9 . The method of  claim 8 , further comprising:
 comparing the at least one of the temperature and the diameter with at least one of a modeled temperature and a modeled diameter determined by the roll model; and   adapting the roll model based on the comparing.   
     
     
         10 . The method of  claim 8 , wherein the storage device is one of:
 a component part of the roll stand; and   positioned relative to the roll stand in such a way that the two rolls can be transferred from the roll stand into the storage device and from the storage device into the roll stand;   wherein, for each roll, the at least one measuring system has a single measuring device, the single measuring device adapted to detect the at least one of the temperature and the diameter of a respective roll of the two rolls at all of the predefined detection positions, as viewed in the direction of the roll axes.   
     
     
         11 . The method of  claim 10 , wherein the single measuring device is arranged on a main body so as to be movable as viewed in the direction of the roll axes, the single measuring device adapted to be moved over an entire effective barrel length of the respective roll.