Apparatus for making thin hot strip

Abstract

The invention relates to an apparatus for making a thin hot strip ( 1 ) by roll casting in a continuous process, comprising a casting machine ( 2 ) in which first a thin slab ( 3 ) is cast, at least one rolling train ( 4, 5 ) downstream of the casting machine ( 2 ) and in which the thin slab ( 3 ) is rolled using the primary heat of the casting process, and a plurality of finish-rolling stands ( 7 ) that, relative to a travel direction (F) of the strip ( 1 ), are arranged in a downstream region ( 6 ) and that can roll the strip ( 1 ) with work rolls ( 8 ) to a final thickness. To improve the manufacture of a thin hot strip in the continuous process, the invention provides that the work rolls ( 8 ) of the finish-rolling stands ( 7 ) have a low-wear roll surface. Furthermore, the invention relates to a method of making a thin hot strip ( 1 ) by roll casting in a continuous process.

1 . An apparatus for making a thin hot strip by roll casting in a continuous process, the apparatus comprising:
 a casting machine in which a thin slab is cast,   at least one rolling train downstream of the casting machine and in which the thin slab is rolled using the primary heat of the casting process, and   a plurality of finish-rolling stands that, relative to a travel direction of the strip are in a downstream region and that can roll the strip with work rolls to a final thickness, the work rolls of the finish-rolling stands each having a low-wear outer surface formed by a layer of powder metallurgical material or a metal-ceramic composite material.   
     
     
         2 - 3 . (canceled) 
     
     
         4 . The apparatus according to  claim 1 , wherein the low-wear layer of powder metallurgical material is produced by the HIP method. 
     
     
         5 - 6 . (canceled) 
     
     
         7 . The apparatus according to any one of the  claims 1  to  6 , wherein all the work rolls of the rolling train have the low-wear roll surface of low-wear powder metallurgical material or a metal-ceramic composite material. 
     
     
         8 - 12 . (canceled)