Method and device for the continuous production of metallic strips

Abstract

The invention relates to a method and a device for the continuous production of a metallic, preferably cold-rolled strip ( 1 ), especially a high-grade steel. The strip ( 1 ) which is to be finished is guided by a device ( 2 ) into a conveyor device (R), wherein the strip ( 1 ) undergoes a rolling process, a heating process and chemical treatment. According to the inventive method, in order to improve productivity, the rolling process is carried out primarily after heating the strip and after chemical treatment.

1 . Process for the continuous production of metal strip ( 1 ), preferably cold-rolled strip and especially high-grade steel strip, where the strip ( 1 ) to be produced is guided in the transport direction (R) through a system ( 2 ), in which the strip ( 1 ) is subjected to a rolling process, to a heating process, and to a chemical treatment, wherein the rolling process is conducted only after the strip has been heated and chemically treated.  
     
     
         2 . Process according to  claim 1 , wherein the heating of the strip ( 1 ), the chemical treatment of the strip ( 1 ), and the rolling process are conducted in that order.  
     
     
         3 . Process according to  claim 1 , wherein the rolling process is a tandem rolling process.  
     
     
         4 . Process according to  claim 1 , wherein the thickness of the strip ( 1 ) is subjected to a significant reduction, preferably by at least 20%.  
     
     
         5 . Process according to  claim 1 , wherein the chemical treatment is a pickling process.  
     
     
         6 . System ( 2 ) for the continuous production of metal strip ( 1 ), preferably cold-rolled strip and especially high-grade steel strip, specifically for the implementation of the process according to  claim 1 , where the strip ( 1 ) to be produced passes through the system ( 2 ) in the transport direction (R), and where the system ( 2 ) has an installation ( 3 ) for heating the strip ( 1 ), an installation ( 4 ) for chemically treating the strip ( 1 ), and an installation ( 5 ) for rolling the strip ( 1 ), wherein the installation ( 5 ) for rolling the strip ( 1 ) is located downstream, with respect to the transport direction (R), of the installation ( 3 ) for heating the strip ( 1 ) and of the installation ( 4 ) for chemically treating the strip, and in that the installation ( 5 ) for rolling the strip ( 2 ) has a tandem rolling mill ( 5   a ,  5   b ,  5   c ).  
     
     
         7 . System according to  claim 6 , wherein the rolling stands ( 5   a ,  5   b ,  5   c ) are designed as a multi-roll cold-rolling mill with a 6-high or Z-high roll arrangement.  
     
     
         8 . System according to  claim 6 , wherein the installation ( 4 ) for chemically treating the strip ( 1 ) is a pickling installation.  
     
     
         9 . System according to  claim 6 , wherein a stretcher-leveling unit ( 6 ) is located between the installation ( 3 ) for heating the strip ( 1 ) and the installation ( 4 ) for chemically treating the strip ( 1 ).  
     
     
         10 . System according to  claim 6 , wherein a metal grain shot-blasting unit ( 7 ) is located between the installation ( 3 ) for heating the strip ( 1 ) and the installation ( 4 ) for chemically treating the strip ( 1 ).  
     
     
         11 . System according to  claim 6 , wherein a trimmer unit ( 8 ) is installed downstream, with respect to the transport direction (R), of the installation ( 4 ) for chemically treating the strip ( 1 ).  
     
     
         12 . System according to  claim 6 , wherein a degreasing installation ( 12 ) is installed upstream, with respect to the transport direction (R), of the installation ( 3 ) for heating the strip ( 1 ).