System and method for producing flat rolled products

Abstract

A system for producing flat rolled products from thick-cast metal slabs includes: a continuous casting device, by which a flat continually cast product with a thickness of at least 160 mm can be continually cast; a separating device, arranged so as to adjoin the continuous casting device for separating the flat continually cast product into individual thick slabs; a hot-rolling mill, by which the thick slabs can be rolled to form the flat rolled product; a thick slab supplying device arranged transversely to the transport direction and positioned between the separating device and the rolling train; and an electric heating device arranged in front of the hot-rolling mill, for a direct hot charging process, said electric heating device allowing at least the thick slabs coming from the continuous casting device arranged in the common transport line to be heated to a hot-rolling temperature.

1 .- 16 . (canceled) 
     
     
         17 . A system ( 1 ) for producing a flat rolled product from thick-cast steel and/or non-iron metal slabs, comprising:
 at least one continuous casting device ( 3 ), by which a flat continually cast product with a thickness of at least 160 mm can be continually cast;   a separating device ( 4 ), by which the flat continually cast product can be separated into thick slabs, arranged so as to adjoin the at least one continuous casting device ( 3 );   a hot-rolling mill ( 5 ), by which the thick slabs can be rolled to form the flat rolled product,
 wherein the hot-rolling mill ( 5 ) comprises a pre-rolling train ( 8 ) and a finishing rolling train ( 9 ), each of which comprises at least one roll stand, and 
 wherein the hot-rolling mill ( 5 ) and the at least one continuous casting device ( 3 ) are arranged in a common transport line (T 1 ); 
   at least one thick slab supplying device ( 15 ) arranged transversely to a transport direction (T 1 ) and positioned between the separating device ( 4 ) and the hot-rolling mill ( 5 ); and   at least one electric heating device arranged in front of the hot-rolling mill ( 5 ), for a direct hot charging process ( 7 ), the electric heating device allowing at least the thick slabs coming from the continuous casting device ( 3 ) arranged in the common transport line to be heated over their entire surface to a hot-rolling temperature.   
     
     
         18 . The system ( 1 ) as in  claim 17 ,
 wherein the at least one electric heating device is arranged in front of the pre-rolling train ( 8 ) in the transport direction.   
     
     
         19 . The system ( 1 ) according to  claim 17 ,
 further comprising at least one electric pre-strip heating device ( 10 ) arranged in front of the finishing rolling train ( 9 ) in the transport direction.   
     
     
         20 . The system ( 1 ) according to  claim 17 ,
 wherein the at least one thick slab supplying device ( 15 ) is designed as a transport and heating device, by which transported and/or temporarily stored thick slabs can be heated to the hot-rolling temperature.   
     
     
         21 . The system ( 1 ) according to  claim 20 ,
 wherein the at least one thick slab supplying device ( 15 ) is arranged between the electric heating device for the direct hot charging process ( 7 ) and the pre-rolling train ( 8 ).   
     
     
         22 . The system ( 1 ) according to  claim 17 ,
 wherein at least one electric thick-slab preheating device ( 16 . 1 ,  16 . 2 ) is connected on an inlet side upstream of the at least one thick slab supplying device ( 15 ), and   wherein the at least one thick slab supplying device ( 15 ) is designed as a transport and heating device.   
     
     
         23 . The system ( 1 ) according to  claim 22 ,
 wherein at least one electric supplementary thick-slab heating device ( 17 ) is connected on an outlet side downstream of the at least one thick slab supplying device ( 15 ), and   wherein the at least one thick slab supplying device ( 15 ) is designed as a transport and heating device.   
     
     
         24 . The system ( 1 ) according to  claim 23 ,
 wherein the at least one supplementary electric thick-slab heating device ( 17 ) is arranged between the at least one thick slab supplying device ( 15 ) and the pre-rolling train ( 8 ).   
     
     
         25 . The system ( 1 ) according to  claim 23 ,
 further comprising at least one further electric supplementary thick-slab heating device ( 18 ), which is connected upstream of the electric thick-slab heating device ( 17 ).   
     
     
         26 . The system ( 1 ) according to  claim 17 ,
 further comprising a control device(S) with an associated calculation unit (B),   wherein the control device(S) is designed to control and/or regulate the system ( 1 ) based on a minimized energy consumption and/or a maximum throughput, and/or product properties, and/or product dimensions.   
     
     
         27 . The system ( 1 ) according to  claim 17 ,
 wherein the pre-rolling train ( 8 ) comprises at least one upsetting device ( 19 ) in the transport direction and at least one first and at least one second pre-rolling stand ( 20 ,  21 ).   
     
     
         28 . The system ( 1 ) according to  claim 27 ,
 wherein the upsetting device ( 19 ) comprises at least one slab upsetting press.   
     
     
         29 . A method for producing flat rolled products from thick-cast steel and/or non-iron metal slabs, comprising:
 continuously casting a flat continually cast product with a thickness of at least 160 mm and separating the flat continually cast product into thick slabs;   heating the thick slabs to a temperature of at least 1000° C. by an electric heating device for a direct hot charging process ( 7 ), if the thick slab comes from the continuous casting device ( 3 ) arranged in a common transport line (T 1 ); and/or   heating the thick slabs to a temperature of at least 1000° C. by at least one supplementary heating device ( 16 . 1 ,  16 . 2 ) and/or by a thick slab supplying device ( 15 ), if the thick slab is transported transversely from a second transport line (T 2 ) into a first transport line (T 1 ); and   hot rolling the thick slabs heated to a hot-rolling temperature to form the flat rolled product, by initially pre-rolling them and subsequently finish-rolling them.   
     
     
         30 . The method according to  claim 29 ,
 wherein the thick slabs are fed at a temperature of at least 500° C. to the electric heating device for the direct hot charging process ( 7 ).   
     
     
         31 . The method according to  claim 29 ,
 wherein the pre-rolled flat rolled product is heated to a temperature of at least 950° C. by an electric pre-strip heating device ( 10 ) before it is finish-rolled into the flat rolled product.   
     
     
         32 . The method according to  claim 29 ,
 wherein the heating and/or the hot rolling are controlled by a control unit(S) in such a manner that a minimum energy consumption and/or a maximum throughput determined by a calculation unit (B), and/or a product property, and/or a product dimension is achieved.