Abstract: Disclosed is a rolling method for rolling a strip including: rolling the strip by a pair of working rolls; transmitting a rolling force to the working rolls by a pair of support rolls; holding each of the working rolls by a pair of side support rollers; supporting each side support roller by two rows formed by rollers; supporting each row formed by the rollers, by a bearing support carrying rollers, the bearing support mounted pivotally on an articulation axis. The dimensions of a first interspace between the side support roller and the support roll and a second interspace between the strip and the assembly consisting of side support roller and bearing support vary in the course of the rolling. The method includes adjusting the dimension separating the axis of the support roll and the axis of the side support roller defining the first interspace.

Abstract: A method for changing work roll in a rolling mill which limits the risk of scratching the work roll, or even the risk of scratching the metal strip, upon extracting or inserting the work roll, by virtue of a mechanical separation element, in particular of the branches of a fork system, inserted by a robotic element.

Abstract: Disclosed is a rolling mill including: a stand; two working rolls, two support rolls, and two intermediate rolls; lateral support rolls, able to support the working rolls laterally, each lateral support roll being borne by a support arm, mounted with the ability to pivot; load spreading beams and a mechanism for applying a preload on each support arm, including at least one preload actuating cylinder; one or more spray nozzles for a lubricating/cooling fluid, and wherein at least one of the nozzles, is carried on one of the support arms and in which the fluid supply circuit for the at least one nozzle comprises a device for connection/disconnection with the support arm with actuator. The actuator is an actuator distinct from the actuating cylinder of the mechanism for applying a preload.

Abstract: Disclosed is a method for changing the rolls on a rolling mill for rolling a metal strip, carried out using a Quarto rolling mill, including lower and upper working and support rolls. The installation includes a system for extracting the working rolls and the support rolls, including: an actuator pushing the rolls out of the roll stand extraction; a coupling head, secured to the actuator, situated in a position of opening of the roll stand, including: a first coupler driving the chock or the end of the lower working roll, on the rolling-mill drive side; a second coupler driving the chock of the lower support roll, on the rolling-mill drive side. The first and second coupler allow successive extractions of the working rolls and then of the support rolls from the roll stand using the actuator of the extraction system. Also disclosed is a related rolling mill installation.

Abstract: A treatment device for drying a laminated strip includes: lower and upper crosspieces extending transversely to and on either side of the metal strip, the upper crosspiece embedding an upper pressure cylinder with supporting rollers, the lower crosspiece embedding a lower pressure cylinder with the supporting rollers, the actuator and guide enabling the crosspieces to pass from a retracted idle position to a close working position, for which the lower and upper pressure cylinders, arranged on either side of the strip, transversely to the direction of travel, are each intended to be pressure-applied on the strip by the supporting rollers distributed along the length of the pressure cylinder, and along at least two rotating axes parallel to the longitudinal axis of the pressure cylinder. A first compartment supports all the supporting rollers. A second compartment supports the pressure cylinder. Each compartment is a removable element of the crosspiece.

Abstract: Disclosed is a spray ramp intended to lubricate and/or cool a laminated strip and/or pressure cylinders of a mill, including: a tubular shaft of which the hollow interior volume forms a fluid admission chamber; a chassis rigidly connected to the external wall of the shaft, extending along the tubular shaft; a plurality of nozzles distributed over the length of the chassis and supported by the chassis, arranged such that the jets form a fluid curtain; and a pipe system, inside the chassis, ensuring the supply of the nozzles from the through-bores provided in the tubular wall of the hollow shaft. The pipe system includes at least one pressure levelling chamber extending over the whole active length of the chassis and through which all the fluid supplying the plurality of nozzles passes.

Abstract: A shearing device for fragmenting a metal strip includes two counter-rotating drums facing one another, a drive device connecting the drums and synchronising their rotation speed, and at least one pair of drum-supported blades. The blades engage by shearing effect during drum rotation to cut the waste. The blades of the pair have, from the cutting edge thereof, planar surfaces, referred to as overlapping surfaces, overlapping and facing one another during the shearing between blades, each blade being secured transversely to the drum, at an angle to the axis of rotation of the drum, so the plane through the overlapping surface of the blade forms an angle with the axis of rotation of the corresponding drum, producing gradual shearing. The overlapping surface of each blade is tilted so the plane passing through the overlapping surface does not intersect the rotational axis of the drum on its active width.

Abstract: Device for filtering rolling oil, including: a tank having an inlet for the oil to be filtered, as well as a lid having at least one plate element, or a plurality of plate elements, removably stacked in the internal volume of the tank, able to be removed from the tank via the upper opening of the lid, each of the plate elements removably receiving filtration cartridges, each of the hollow plate elements constituting a collector for oil filtered by the cartridges of said plate element, each of the plate elements comprising a filtered oil outlet removably connected to a corresponding outlet of the tank via a connector. According to the invention, there are between one and three plate elements, the total number of filtration cartridges of the device is between 500 and 3000 cartridges, and is suitable to allow a nominal filtration flow of between 1000 L/min and 4000 L/min.

Abstract: A rolling mill includes a frame, at least one pair of working cylinders capable of defining the air gap of the strip to be rolled, as well at least one line for spraying a lubricant and/or coolant fluid, arranged next to the plane of the strip to be rolled. The line is rigidly connected to the frame via a hinged mechanical link, the mechanical link including a resilient unit forcing the line into at least one operational position, toward the plane of the strip, and allowing, in the event that a force on the line tends to separate the line, greater than a threshold value, the deformation of the resilient unit against the return force thereof, and thus the retraction of the line toward a position separated from the at least one operational position.

Abstract: A device for filtering oil, including: a tank including an oil inlet and a cover; an at least one removable plate, inside the tank, that can be removed from the tank via the upper opening of the cover. The at least one plate removably receives filtering cartridges. The plate is hollow, forming a collector for the oil filtered by the cartridges of the plate. The plate includes an outlet for filtered oil removably connected to a corresponding outlet of the tank via a connector. The connection includes a first portion rigidly connected to the plate and a second portion rigidly connected to the tank, that are capable of mutually cooperating via a seal in order to provide a sealed connection between the oil outlet of the plate, and the corresponding outlet of the tank, and in order to allow maintenance operations to be performed without intervening in the tank.

Abstract: A cassette intended to be provided on a rolling mill, the cassette (1) forming a self-supporting unit including: a roller intended to constitute one of the two intermediate rollers of the rolling mill; two chocks (3) whereon are mounted the ends of the roller (2); at least one support arm (4) of the at least one side bearing member the support arm extending between the two chocks and being mounted pivotingly in relation thereto. The cassette includes at least one pair of support elements (5) receiving the ends of a rotating shaft (6) of the at least one support arm and the two support elements being detachably fastened, respectively, on the two chocks so as to allow the disassembly of the at least one support arm of the chocks and/or the assembly of the at least one support arm on the chocks independently of the disassembly/assembly of the roller.

Abstract: A method for changing the configuration of a rolling mill of the six-high type in which the rolling mill is changed from a first configuration (C1) of a range of diameters of working cylinders (3?, 4?), keeping the chocks (E1, E2) by turning over the chocks (E2) of the intermediate cylinders (5, 6) and by turning over the chocks (E1) of the working cylinders. A rolling mill as such, suitable for implementing the method is also described.

Abstract: Rolling mill (1) includes: side bearing rollers (5), able to laterally support the working rollers (2) of the rolling mill, with each side bearing roller being carried by a support arm (6), mounted pivoting on an axis (7), load distribution beams (8) extending between the corresponding posts of each pair, and elements (9) for applying a preload force on each support arm (6), intended to engage with one of the support arms on a bearing surface (10), and including at least one preload cylinder (11) integral with one of the load distribution beams (8), one or several spraying nozzles for a lubricant/cooling fluid, at least one of the nozzles (12, 12?), is embedded on one of the support arms (6) and the fluid supply circuit of the at least one nozzle (12, 12?) includes a connection/disconnection device (13) with the support arm (6).

Abstract: A rolling mill (100) includes: —a rolling-mill cage (10) containing a plurality of cylinders, including two working cylinders (12) and two pairs of intermediate cylinders (13), —a main gate (30) on the front face of the rolling mill (100) for accessing all the cylinders, —a device (20) for the lateral movement of the intermediate cylinders (13) of the push-push type including first and second pairs of hydraulic actuators (22, 22?, 21, 21?) each configured so as to exert a thrust force (P) to allow a lateral movement of the intermediate cylinders (13), —a removable small gate (40) fixed to the main gate (30), allowing access to the cylinders (12) and (13), and integrating the second pair of hydraulic actuators (21, 21?) so that opening and closing the small gate (40) does not interfere with the opening and closing of the main gate (30).

Abstract: A shearing device for fragmenting a metal strip includes two counter-rotating drums facing one another, a drive device connecting the drums and synchronising their rotation speed, and at least one pair of drum-supported blades. The blades engage by shearing effect during drum rotation to cut the waste. The blades of the pair have, from the cutting edge thereof, planar surfaces, referred to as overlapping surfaces, overlapping and facing one another during the shearing between blades, each blade being secured transversely to the drum, at an angle to the axis of rotation of the drum, so the plane through the overlapping surface of the blade forms an angle with the axis of rotation of the corresponding drum, producing gradual shearing. The overlapping surface of each blade is tilted so the plane passing through the overlapping surface does not intersect the rotational axis of the drum on its active width.