Method for providing at least one work roll for rolling rolling stock

Abstract

The invention relates to a method for providing at least one work roll ( 1, 2 ) for rolling strip-shaped rolling stock ( 3 ), wherein the work roll ( 1, 2 ) is provided to interact with a second roll ( 4, 5 ), particularly with an intermediate or backup roller and be supported by said second roll, wherein the second roll ( 4, 5 ) has a background area ( 6 ) in the axial end regions thereof. In order to improve the quality of a rolled strip, the method according to the invention provides the following steps: a) calculating the roll nip profile resulting between two interacting work rolls ( 1, 2 ), wherein a defined width of the rolling stock ( 3 ) is assumed, which extends at least partially into the region of the background area ( 6 ) of the second roll ( 4, 5 ); b) defining a desired rolling stock contour that is to be created by the rolling process when passing the work rolls ( 1, 2 ); c) calculating a compensation cut for the work roll ( 1, 2 ) by subtracting the defined rolling stock contour according to step b) from the roll nip profile according to step a) and multiplying the calculated difference with a damping factor (K); d) at least partially applying the compensation cut calculated according to step c) to at least one work roll ( 1, 2 ).

1 - 10 . (canceled) 
     
     
         11 . A method for preparing at least one work roll for rolling of rolling stock, wherein the work roll is provided to interact with a second roll, and to be supported by the second roll, and wherein axial end regions of the second roll have a setback, wherein the method comprising the steps of:
 (a) computing a roll gap profile that is formed between two interacting work rolls, where a defined width (B) of the rolling stock is assumed, which extends at least partially into a region of the setback of the second roll;   (b) defining a desired rolling stock contour that is to be produced by the rolling process during passage through the work rolls;   (c) computing a compensation cut for the work roll by subtracting the rolling stock contour defined according to step (b) from the roll gap profile according to step (a) and multiplying the computed difference by a damping factor (K); and   (d) at least proportionally applying compensation cut computed according to step (c) to at least one work roll.   
     
     
         12 . The method in accordance with  claim 11 , including superimposing the compensation cut according to step (c) on another profiling of the work roll. 
     
     
         13 . The method in accordance with  claim 12 , wherein the another profiling of the work roll is a parabolic profiling or an S-shaped profiling. 
     
     
         14 . The method in accordance with  claim 11 , wherein the damping factor (K) for the computation according to step (c) is 0.3-0.9. 
     
     
         15 . The method in accordance with  claim 14 , wherein the damping factor (K) for the computation according to step (c) is 0.4-0.8. 
     
     
         16 . The method in accordance with  claim 11 , including basing the computation according to step (a) on the maximum width (B) provided for the rolling stock that is to be rolled with the work rolls. 
     
     
         17 . The method in accordance with  claim 11 , including basing the computation according to step (a) on a well-defined rolling force. 
     
     
         18 . The method in accordance with  claim 11 , including basing the computation according to step (a) on a well-defined work roll bending force (F B ). 
     
     
         19 . The method in accordance with  claim 11 , including basing the definition according to step (b) on the same parameters as in step (a). 
     
     
         20 . The method in accordance with  claim 11 , including basing the definition according to step (b) on a roll gap profile computed offline. 
     
     
         21 . The method in accordance with  claim 20 , including basing the roll gap profile computed offline on an extended backup roll barrel, so that edges of the rolling stock are not located in the region of the setback of the second rolls.