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1. WO2002024363 - METHOD TO CONTROL THE AXIAL FORCES GENERATED BETWEEN THE ROLLING ROLLS

Publication Number WO/2002/024363
Publication Date 28.03.2002
International Application No. PCT/IB2001/001740
International Filing Date 24.09.2001
IPC
B21B 13/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
13Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
02with axes of rolls arranged horizontally
B21B 13/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
13Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
14having counter-pressure devices acting on rolls to inhibit deflection of same under load
B21B 27/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
27Rolls; Lubricating, cooling or heating rolls while in use
02Shape or construction of rolls
B21B 37/28 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
37Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
28Control of flatness or profile during rolling of strip, sheets or plates
B21B 37/40 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
37Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
28Control of flatness or profile during rolling of strip, sheets or plates
40using axial shifting of the rolls
CPC
B21B 13/023
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
13Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
02with axes of rolls arranged horizontally
023the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
B21B 13/142
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
13Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
14having counter-pressure devices acting on rolls to inhibit deflection of same under load; ; Back-up rolls
142by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
B21B 2013/026
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
13Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
02with axes of rolls arranged horizontally
026Quinto, five high-stands
B21B 2013/028
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
13Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
02with axes of rolls arranged horizontally
028Sixto, six-high stands
B21B 2027/022
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
27Rolls, ; roll alloys or roll fabrication
02Shape or construction of rolls
021Rolls for sheets or strips
022Rolls having tapered ends
B21B 37/28
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
37Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
28Control of flatness or profile during rolling of strip, sheets or plates
Applicants
  • DANIELI & C. OFFICINE MECCANICHE S.P.A. [IT]/[IT] (AllExceptUS)
  • BOBIG, Paolo [IT]/[IT] (UsOnly)
  • STELLA, Francesco [IT]/[IT] (UsOnly)
  • DRIGANI, Fausto [IT]/[IT] (UsOnly)
Inventors
  • BOBIG, Paolo
  • STELLA, Francesco
  • DRIGANI, Fausto
Agents
  • PETRAZ, Gilberto
Priority Data
UD2000A00017625.09.2000IT
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD TO CONTROL THE AXIAL FORCES GENERATED BETWEEN THE ROLLING ROLLS
(FR) PROCEDE DE COMMANDE DES FORCES AXIALES PRODUITES ENTRE LES CYLINDRES DE LAMINAGE
Abstract
(EN)
Method to control the axial forces generated between the rolls in a rolling stand (10) for plane products (12) having at least a pair of working rolls (11a, 11b), a corresponding pair of back-up rolls (13a, 13b) and at least an intermediate roll (15a) located between one of the working rolls (11a) and a corresponding back-up roll (13b), axial translation means (16) associated with the working rolls (11a) to translate them axially (WR shifting), crossing means (19) associated with the intermediate roll (15a) to arrange it with its longitudinal axis (25a) inclined (IR crossing), that is, rotated on a horizontal plane by a set angle ($g(a)) with respect to the longitudinal axes (21a, 21b, 23a, 23b) of the working rolls (11a, 11b) and of the back-up rolls (13a, 13b); according to this method the WR shifting and the IR crossing are controlled by control means (30) so as to reduce to a minimum the axial forces generated in the working rolls (11a, 11b), and consequently the axial load on the corresponding thrust bearings (28).
(FR)
L'invention concerne un procédé de commande des forces axiales produites entre les cylindres d'une cage de laminage (10) de produits plans (12), cette cage comprenant au moins une paire de cylindres de travail (11a, 11b), une paire correspondante de cylindre d'appui (13a, 13b), au moins un cylindre intermédiaire (15a) placé entre l'un des cylindres de travail (11a) et un cylindre d'appui correspondant (13b), des moyens de translation axiale (16) associés aux cylindres de travail (11a) et conçus pour une translation axiale de ces cylindres (décalage WR), des moyens de croisement (19) associés au cylindre intermédiaire (15a) et conçus pour incliner (croisement IR) l'axe longitudinal (25a) de ce cylindre, c'est-à-dire pour le faire pivoter sur un plan horizontal selon un angle déterminé ($g(a)) par rapport à l'axe longitudinal (21a, 21b, 23a, 23b) respectif des cylindres de travail (11a, 11b) et des cylindres d'appui (13a, 13b). Selon le procédé de l'invention, le décalage WR et le croisement IR sont commandés par des moyens de commande (30) de manière à réduire au minimum les forces axiales produites dans les cylindres de travail (11a, 11b), et par conséquence la charge axiale exercée sur les paliers de butée correspondants (28).
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