Method for longitudinally guiding rolling stock, especially a hot-rolled steel strip, and hot-rolling mill for carrying out said method

Abstract

An object of the invention is to reduce structural and strength differences over the width of the rolling stock and to minimize the losses of the rolling stock caused by trimming. The object of the invention is achieved, according to the invention, by guiding the rolling stock ( 5 ) longitudinally and on opposite sides of a laminar cooling region ( 4 ).

1 . A method of longitudinally guiding a rolling stock on a roller table of a hot-rolling mill ( 1 ), which after leaving the finishing rolling train ( 2 ), is transported on the roller table in direction of a reel ( 7 ) and passes a laminar cooling region ( 4 ) located between the finishing rolling train and the reel,
 characterized in that   the rolling stock ( 5 ) is guided by at least one lateral guide ( 11 ) along and on opposite sides of the laminar cooling region ( 4 ).   
     
     
         2 . A method according to  claim 1 ,
 characterized in that   the rolling stock ( 5 ) is guided by a plurality of lateral guide ( 11 ) along and on the opposite sides of the laminar cooling region ( 4 ).   
     
     
         3 . A method according to  claim 1 ,
 characterized in that   a width of the rolling stock ( 5 ) is automatically determined after the rolling stock passes the finishing rolling train ( 2 ).   
     
     
         4 . A method according to  claim 2 ,
 characterized in that   the related lateral guides ( 11 ) are adjusted to the determined rolling stock width after the a head of the rolling stock has passed a respective lateral guide.   
     
     
         5 . A method according to  claim 4 ,
 characterized in that   adjustment of the lateral guides ( 11 ) to the rolling stock width is effected in a controlled manner.   
     
     
         6 . A method according to  claim 1 ,
 characterized in that   a position of the lateral guides ( 11 ) is adjusted dependent on a position of a cooling device ( 10 ) with shrouding elements ( 10 . 1 ) for a liquid cooling medium above the rolling stock ( 5 ).   
     
     
         7 . A method according to  claim 1 ,
 characterized in that   a position of a cooling device ( 10 ) with shrouding elements ( 10 . 1 ) for a liquid cooling medium above the rolling stock ( 5 ) is adjusted dependent on a position of the lateral guide ( 11 ).   
     
     
         8 . A hot-rolling mill having a finishing rolling train, comprises a laminar cooling region ( 4 ) arranged after the finishing rolling train ( 2 ) and having a roller table ( 3 ) for transporting a rolling stock ( 5 ); a reel located at the end of the roller table ( 3 ) for winding up the rolling stock; and a cooling device ( 10 ) located above the rolling stock ( 5 ) and having shrouding elements ( 10 . 1 ) for a liquid cooling medium,
 characterized in that   at least one lateral guide ( 11 ) is arranged along the laminar cooling region.   
     
     
         9 . A hot-rolling mill according to  claim 8 ,
 characterized in that   a plurality of lateral guides ( 11 ) is arranged along the laminar cooling region ( 4 ).   
     
     
         10 . A hot-rolling mill according to  claim 8 ,
 characterized in that   a measurement device ( 12 ) for determining a width of the rolling stock ( 5 ) is arranged between an output side ( 2 . 1 ) of the finishing rolling train ( 2 ) and an input side ( 4 . 1 ) of the laminar cooling region ( 4 ).   
     
     
         11 . A hot-rolling mill according to  claim 8 ,
 characterized in that   a position of the at least one lateral guide ( 11 ) is adjusted dependent on a position of the cooling device ( 10 ) located above the rolling stock ( 5 ) and provided with shrouding elements ( 10 . 1 ) for a liquid cooling medium and taking into account uniformity of structure and uniformity of strength characteristics of the rolling stock ( 5 ).   
     
     
         12 . A hot-rolling mill according to  claim 8 ,
 characterized in that   a position of the cooling device ( 10 ) located above the rolling stock ( 5 ) and provided with shrouding elements ( 10 . 1 ) for a liquid cooling medium is adjusted dependent on a position of the at least one lateral guide ( 11 ) and taking into account uniformity of structure and uniformity of strength characteristics of the rolling stock ( 5 ).   
     
     
         13 . A hot-rolling mill according to  claim 8 ,
 characterized in that   the at least one lateral guide ( 11 ) comprises strip guides ( 11 . 1 ,  11 . 2 ) arranged on opposite sides of the rolling stock ( 5 ) extending parallel to each other, and displaceable relative to each other.   
     
     
         14 . A hot-rolling mill according to  claim 13 ,
 characterized in that   each of the strip guides ( 11 . 1 ,  11 . 2 ) is connected with a drive formed as a piston-cylinder unit ( 13 ) for effecting parallel displacement of the strip guides.