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1. (WO2017060428) METHOD AND DEVICE FOR PRODUCING A METAL STRIP BY CONTINUOUS ROLLING

Pub. No.:    WO/2017/060428    International Application No.:    PCT/EP2016/074002
Publication Date: Fri Apr 14 01:59:59 CEST 2017 International Filing Date: Sat Oct 08 01:59:59 CEST 2016
IPC: B22D 11/12
B22D 11/124
B22D 11/22
B21B 45/02
B21B 37/44
Applicants: SMS GROUP GMBH
Inventors: SEIDEL, Jürgen
REIFFERSCHEID, Markus
Title: METHOD AND DEVICE FOR PRODUCING A METAL STRIP BY CONTINUOUS ROLLING
Abstract:
The invention relates to a method for producing a metal strip by continuous rolling, in which first a slab (1) is cast in a casting machine (2) and this cast is then rolled continuously in a rolling train (3) comprising at least one rolling stand, wherein the material of the slab (1) is cooled in the region of a strand guide (4) by spraying on a cooling medium (5) by means of a number of cooling devices (6), wherein each cooling device (6) has a number of spraying nozzles (7), which are arranged next to one another in a direction transverse (Q) to the conveying direction (F) and by means of which the cooling medium (5) is discharged onto the slab (1). To achieve a higher quality of the slab, and consequently of the strip, the invention provides that at least one of the cooling devices (6) is operated in such a way that cooling medium (5) is only discharged onto the slab (1) by means of a number of spraying nozzles (7) arranged in the middle region (M) of the slab (1), while the spraying nozzles (7) located in the edge region (K) of the slab (1) discharge no cooling medium (5) or only a reduced amount of cooling medium (5) onto the slab (1), wherein, in the region of the strand guide (4) and/or in the region between the strand guide (4) and the rolling train (3), preferably the edge region (K) of the slab (1) is protected from cooling by means of a thermal insulation (8) and/or the slab (1) is heated in its edge region (K) along an equalizing zone between the casting machine (2) and the rolling train (3). The invention also relates to a device for producing the strip.