Method and plant for the hot rolling of strip

Abstract

A method and a plant for the hot rolling of strip, in which the rolling stock is rolled in at least one reversing roughing stand with a number of roughing passes into a broken-down strip, and the broken-down strip is transported over an intermediate roller table into at least one Steckel finishing stand and the strip is finish-rolled in the finishing stand with a number of passes into a finished strip having a predetermined thickness, and the strip is finally wound into a coil. The length of the intermediate roller table determined by the length of the broken-down strip is shortened and tandem rolling is carried out in the roughing stand and the finishing stand at least during the last breaking-down pass of the strip.

I claim:  
     
         1 . In a method of hot-rolling of strip from rolling stock, including rolling the rolling stock in at least one reversing roughing stand with a number of passes into a broken-down strip having a length, transporting the broken-down strip over an intermediate roller table into at least one Steckel finishing stand and finish-rolling the broken-down strip in the Steckel finishing stand with a number of passes into a finished strip, and finally winding the strip into a coil, the improvement comprising shortening a length of the intermediate roller table determined by the length of the broken-down strip, and carrying out tandem rolling.. in the roughing stand and the finishing stand. at least during a last roughing pass.  
     
     
         2 . The method according to  claim 1 , comprising shortening the length of the intermediate roller table to a length which is shorter than the length of the broken-down strip.  
     
     
         3 . The method according to  claim 1 , wherein the length of the intermediate roller is shortened to such an extent that tandem rolling of the broken-down strip in the roughing stand and the finishing stand can be carried out already during a second to last roughing pass.  
     
     
         4 . The. method according to  claim 1 , wherein rolling speeds of the roughing stand and the finishing stand are synchronized during tandem rolling.  
     
     
         5 . The method according to  claim 4 , wherein during tandem rolling a transport speed and a transport direction of the intermediate roller table are synchronized with the rolling speed and the rolling direction of the roughing stand and the finishing stand.  
     
     
         6 . A plant for the hot rolling of strip, comprising at least one reversing roughing stand for breaking-down rolling of a strip into a broken-down strip and at least one Steckel finishing stand for reducing the broken-down strip to a finished strip, further comprising an intermediate roller table connecting the roughing stand and the finishing stand, wherein a length of the intermediate roller table corresponds at most to a length of the broken-down strip prior to one of last roughing passes.  
     
     
         7 . The plant according to  claim 6 , comprising shears upstream of the finishing stand, wherein the length of the intermediate roller table corresponds approximately to a distance between the finishing stand and the shears.  
     
     
         8 . The plant according to  claim 6 , wherein the length of the intermediate roller table corresponds approximately to a length of the broken-down strip prior to the last roughing pass.