EP2391459B1 - Methode et dispositif d'arrosage d'une installation de laminage - Google Patents

Methode et dispositif d'arrosage d'une installation de laminage Download PDF

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Publication number
EP2391459B1
EP2391459B1 EP09784174.6A EP09784174A EP2391459B1 EP 2391459 B1 EP2391459 B1 EP 2391459B1 EP 09784174 A EP09784174 A EP 09784174A EP 2391459 B1 EP2391459 B1 EP 2391459B1
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EP
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Prior art keywords
rolls
strip
working
bearing
watering
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EP09784174.6A
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German (de)
English (en)
French (fr)
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EP2391459A1 (fr
Inventor
Vincent Cronier
Bernard Rossigneux
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Clecim SAS
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Siemens VAI Metals Technologies SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/145—Lateral support devices for rolls acting mainly in a direction parallel to the movement of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/028—Sixto, six-high stands

Definitions

  • the present invention relates to a method and a device for watering a rolling strip rolling installation, according to the preambles of claims 1 and 9.
  • the invention relates to the lubrication, as well as the cooling of the metal strip and elements related to the cold rolling of said web in continuous or reversible running in at least one rolling stand.
  • said elements refer to a set of superimposed cylinders having parallel longitudinal axes and placed substantially in at least one plane perpendicular to the running direction of the strip.
  • the longitudinal axis of one of said cylinders is defined as an instantaneous axis of rotation, parallel to a generatrix of the cylinder and passing through the center of mass of said cylinder.
  • a metal strip rolling plant generally comprises at least one rolling stand equipped with at least two vertically superimposed working rolls, each having their longitudinal axis of rotation parallel to the plane defined by the metal strip and placed in the same clamping plane. substantially perpendicular to the running direction of the strip.
  • the working rolls are generally pressed against each other by a pair of support rollers having their longitudinal axis in said same clamping plane, and between which is applied a pressure - or a force - of rolling .
  • a sexto-type mill may have lateral supports, ie each side of each of the work rolls is in contact with a lateral support cylinder itself supported by two rows of lateral support rollers mounted side by side.
  • the sexto rolling mills comprising said rolls and support rollers are generally referred to as laterally supported sexto-type rolling mills.
  • the cylinders bear against each other along substantially parallel bearing lines and directed along a generatrix whose profile, normally rectilinear, depends on the forces applied and the strength of the cylinders. It will be for the superimposed cylinders in a plane perpendicular to the running direction of the strip of forces normal to the strip, and for the lateral support rolls, side forces parallel / tangential to the strip and applied on the working rolls by a tangential force for transmitting a rolling torque from the intermediate support rolls.
  • the gap of the cold rolling mills is lubricated.
  • a lubrication fluid is sprayed on the strip to be rolled and on the surface of the working rolls.
  • the watering fluid also plays an important role in the evacuation of the calories produced in the air gap by the strong reduction of the band and its plastic deformation.
  • the work related to the plastic deformation of the strip heats the working rolls at a temperature of the order of 100 to 150 ° C.
  • the temperature in the grip of the work rolls increases considerably. This can result in breakage of the lubricating film leading to seizures and / or degradation of the surface quality of the rolled strip.
  • the heating of the rolls, particularly the work rolls, is also likely to generate flatness and transverse profile defects of the band by non-homogeneous swelling of the diameter of the working roll along its length. It is therefore important that the watering of the rolls and the strip is optimal so as, on the one hand, to guarantee the formation and maintenance of a continuous lubricating film between the contact surfaces of the working rolls with the strip, and on the other hand, to ensure efficient cooling of the belt and cylinders. It is thus common practice, in cold rolling, to cool the working cylinders by sprinkling under pressure with a coolant coolant. Generally, systems comprising watering nozzles make it possible to water at least part of the strip or part of the rolls with said coolant coolant.
  • the patent EP 1 118 395 B1 The applicant describes the problem of cold rolling, as well as practical arrangements for watering with an adjustable flow rate over the width of the rolls in order to correct their expansions as a function of flatness measurements made on the rolled strip.
  • the method and the device described by the patent EP 1 118 395 B1 allow to cool and lubricate the conventional quarto or sexto mills, but become ineffective for laterally supported mills.
  • the watering of the work rolls is easily achievable because the accessibility to the rolls is excellent, as shown EP 1 118 395 B1 .
  • the problem is radically different for a sexto type mill supported laterally. Indeed, the design of the laterally supported rolling mills is such that the space available between the lateral support members (ie the support rollers and the rollers) and the band is very small and prevents easy access to the work rolls. contact with the band.
  • a passage window for fluid jets typically measures 30 to 60 mm and reaches values as low as 10 mm.
  • the lateral size of said lateral support members is important and imposes a distance between the spray nozzles and the working rolls of several hundred millimeters, for example 400 mm to 500 mm. Under these conditions, direct watering of the working cylinders is impossible. The skilled person is therefore always satisfied with a very important watering of the band which conveys a maximum of heat transfer fluid into the grip of the cylinders, as shown in the document US 4,531,394 .
  • An object of the present invention is to provide a method and a device for direct watering on both sides of the working rolls of a rolling mill with reversible or non-reversible operation, supported laterally.
  • the two sides of the work roll correspond, when the web travels in one direction, to a first side of the cylinder facing the incoming web in the air gap of the work rolls and to a second side of the roll facing the web. outgoing band of the air gap of the working cylinders.
  • each working roll comprises two bearing generatrices, each associated with one of said support rolls being on the same side of the strip as said work roll.
  • Each of said bearing generatrices is defined as the generatrix of said working cylinder belonging to a half plane coming from the longitudinal axis of said working cylinder and comprising the longitudinal axis of the support cylinder with which it is associated.
  • the watering method according to the invention is characterized in that the spray is directed in a mean direction substantially perpendicular to the axis of said working cylinder, or in a mean direction substantially tangential to the axis of said cylinder working, or in a combination of mean directions, perpendicular and substantially tangent to the axis of said work roll.
  • Said average direction substantially tangent to the axis of said working cylinder is for example a mean direction at an angle between 0 ° and 15 ° relative to the axis of said cylinder, so that the jet of a nozzle is adapted to watering said working roll over its entire length when said nozzle is placed at one of the two ends of said work roll.
  • direction mean it refers to the average of all directions of watering taken by a jet coming out of a watering nozzle.
  • the average direction of the jet will be an axis starting from the tip of the cone and intercepting the center of the the base of said cone.
  • these different possibilities of average watering directions ensure optimum watering of said working rolls, whatever the rolling conditions.
  • the method according to the invention is characterized in particular by the watering, for at least one of said working cylinder, of at least a portion of a watering surface defined, according to a first geometry, by a half strip surface plane coming from one of said contact generators and a surface of the working cylinder between this same contact generator and one of said bearing generatrices, such that said watering surface is included in a dihedron acute formed by a first half-plane corresponding to said strip surface half-plane from said contact generator and a second half-plane from said same contact generator and comprising said support generator.
  • each of said work rolls comprises a support generator defined as the generatrix of said work roll belonging to a half-plane coming from the longitudinal axis of said work roll, which does not intercept said strip, but including the longitudinal axis of the support roll being on the same side of the strip as said working roll, so that said support generator is a generatrix common to said working roll and said support roll in contact, along said support generator, with the work roll.
  • each working roll can thus be watered according to four distinct watering surfaces comprising two surfaces defined according to said first geometry, ie limited by one of said contact generators and one or other of said support generatrices and two surfaces. defined according to said second geometry, ie limited in this case by one or other of said generatrices support and said generator support.
  • the working cylinder is thus divided into four surfaces that can be irrigated independently or depending on each other.
  • the method according to the invention is characterized by the simultaneous watering of at least two of said watering surfaces defined according to at least one of said geometries.
  • At least a portion of all the watering surfaces defined according to said first geometry are watered simultaneously, either according to said sprinkling in a mean direction perpendicular to the longitudinal axis of said work roll, or according to said sprinkling in a mean direction substantially tangent to said generatrix said working cylinder.
  • a second watering mode at least a part of all the watering surfaces according to said first geometry and lying predominantly on the same side of said perpendicular plain are watered simultaneously, or according to said sprinkling in a mean direction perpendicular to the longitudinal axis of said work roll, or in said spray in a mean direction substantially tangent to said generatrix said working roll.
  • the second watering mode applies to a continuous rolling, said irrigated portion then being on the side of an inlet of the rolled strip in the rolling stand.
  • a third watering mode at least a part of all the watering surfaces defined according to said second geometry are watered simultaneously, either according to said sprinkling in a mean direction perpendicular to the longitudinal axis of said work roll, or according to said sprinkling in a mean direction substantially tangent to said generatrix of said work roll.
  • a fourth watering mode at least a portion of all the surfaces defined according to said second geometry and lying predominantly on the same side of the perpendicular plane are watered simultaneously, or according to said spray in a mean direction perpendicular to the longitudinal axis of said working cylinder, or according to said spray in a mean direction substantially tangent to said generatrix said working cylinder.
  • a fifth watering mode at least a portion of all the surfaces defined according to said first and said second geometry and lying predominantly on the same side of said perpendicular plane are watered simultaneously, or according to said sprinkling in a mean direction perpendicular to the longitudinal axis of said working cylinder, or in said spray in a mean direction substantially tangent to said generatrix said working cylinder.
  • a sixth watering mode at least a part of all the surfaces defined according to said first geometry and being predominantly on one side of said perpendicular plane, as well as at least a part of all the surfaces defined according to said second geometry and being predominantly on the other side of said perpendicular plane, are watered simultaneously, or in accordance with said sprinkling according to a average direction perpendicular to the longitudinal axis of said work roll, or in said spray in a mean direction substantially tangent to said generatrix of said work roll.
  • a seventh mode of watering at least a part of all the surfaces defined according to said first and said second geometry are watered simultaneously, either according to said sprinkling in a mean direction perpendicular to the longitudinal axis of said work roll, or according to said sprinkling in a mean direction substantially tangent to said generatrix said working cylinder.
  • the method according to the invention is characterized by alternating the watering of said watering surfaces defined according to at least one of said first or second geometries.
  • the alternation of the watering can be related to the reversibility function of the rolling installation, so that when the band scrolls in one direction, a first set of nozzles water at least a portion of the surface of said cylinders working in a first watering, then, when the direction of travel is reversed, the first set of nozzles stops watering the band and a second set of nozzles, substantially symmetrical to said first set of nozzles relative to said perpendicular plane, sprinkles, according to a second watering substantially symmetrical said first watering relative to said perpendicular plane, said working rolls.
  • the method according to the invention is characterized by a variable flow rate of watering.
  • said flow rate may vary over time for the same nozzle, or from one nozzle to another at a given time, in particular, according to a position or a location of said nozzles.
  • this variation in flow rate may be related, for example, to a measurement of the flatness of the band or the temperature of one of said working rolls. This measure of flatness is partly related for example to the heating of the cylinder or the strip during the reduction of thickness of the strip.
  • the flow of the nozzles may also vary to accommodate the amount of energy used for the plastic deformation of the band.
  • the device according to the invention is characterized in that said nozzle system is adapted to water at least a portion of one of said working rolls in a mean direction substantially perpendicular to said axis of the work roll, or to water a part of a surface said working cylinder in a mean direction substantially tangent to the axis of said working roll, ie forming for example an angle between 0 ° and 15 ° with respect to the axis of said work roll or with respect to a portion of said generatrices of said cylinder.
  • the device according to the invention is able to combine said watering in a mean direction substantially perpendicular to the axis of one of said working cylinders with said watering in a mean direction substantially tangent to the axis of one of said cylinders of job.
  • the combination of these two mean directions of watering ensures optimum watering of said working rolls by ensuring a dynamic circulation of the fluid, and thus improves the rolling quality of the strip.
  • the device according to the invention is characterized in that the nozzle system providing watering in a mean direction substantially perpendicular to the axis of the working cylinder comprises a plurality of nozzles, arranged in line along the width of the strip, interposed between the support rollers, in particular interposed at a fixing of said rollers on a roller support.
  • the distance to be traveled by the jet to reach one of said working rolls is reduced from 400-500 mm to 200-250 mm. This reduction, besides the fact that it makes it possible to directly reach the surfaces of the work rolls directly with a jet of fluid without the fluid jet being masked by the support rollers, also has the advantage of more jets.
  • the device according to the invention is characterized in that said rollers comprise an active bearing surface constituted by an outer cylindrical surface of a hard material jacket.
  • said hard material jacket is made of steel and advantageously has a tubular shape, i.e. more precisely the shape of a hollow straight cylinder with or without internal recesses.
  • each of said rollers comprises at least one rolling member adapted to allow a rotation of said roller about an axis of rotation passing through its center of mass and parallel to at least one generatrix of said outer cylindrical surface of said roller.
  • positioning said rolling members inside said rollers frees a place between the rollers. Said place was occupied until now, ie in the state of the prior art, by a member adapted to allow a rotation of rollers, whereas advantageously, the device according to the invention uses this place to insert said nozzles for watering said work rolls.
  • said axis of rotation is a fixed axis mounted on at least one roller support transmitting lateral forces to at least one structure of said rolling stand.
  • attachment of the support rollers is provided by said fixed axis which passes completely through each of said rollers and is adapted to support each rolling member, so that each of said rollers is rotatable about said fixed axis.
  • said fixed axis is assembled to said roller support, in a fixed manner, at each of its two ends.
  • said fixed axis is either a single axis passing through all the rollers of the same line of rollers, while being supported by the roller supports between each roller, or a particular axis to each roller so that each roller is traversed by its own fixed axis which is each time mounted at its ends to said roller support.
  • said row of support rollers is formed of rollers, roll supports and either a single fixed axis or a plurality of fixed axes whose number corresponds to the number of rollers belonging to said row.
  • said liner of a roller receives, at each end of its inner cylindrical surface, at least one of said rolling members strictly included in an internal right cylinder volume formed by said inner cylindrical surface.
  • said rolling member is a ball or roller or needle assembly, protected or not protected from the environment external to the roller by a system of at least one packing strictly included in said volume of internal straight cylinder, such as for example a rubber, polymer or soft metal seal.
  • a lubricating fluid such as an oil
  • a lubrication of said rollers said rolling members and the air gap is provided by said watering fluid.
  • the bearing members are free of packing gaskets.
  • the watering fluid is based, for example, on an emulsion of rolling fluid in water
  • said bearing members are protected from said emulsion by said seals, which are then able to maintain said rolling members in a lubricated state.
  • a lubrication of said rolling members is provided by a lubricating grease bearing members retained by said seals.
  • said rolling members are commercial, ball, roller or needle bearings chosen to be sealed or unsealed according to the lubricating characteristics of the irrigation fluid, particularly if the latter is for example respectively an emulsion based on water or oil.
  • said rolling members may be balls, rollers or needles, disposed between said attachment and said sleeve of said roller, or directly between said fixed axis and said sleeve, to allow rotation of said sleeve around said fixed axis.
  • a use of non-commercial bearings brings a saving of space in the volume of said internal right cylinder. This saving of space can then be used to size the roller so that it supports a pressure greater than that supported when using a commercial bearing.
  • each roller is able to be pressurized under an internal gas pressure slightly higher than the atmospheric pressure, for example by means of compressed air, in order to avoid any infiltration and retention of fluid in the rollers, in particular fluid that is harmful to the lubrication of the running gear.
  • the device according to the invention could for example comprise at least two nozzles distributed substantially symmetrically, or with respect to a median plane of the strip, said median plane being equidistant from said axes of the working rolls and parallel to the strip, either with respect to the plane defined by said perpendicular plane, or with respect to a combination of the two planes, perpendicular and median.
  • the symmetry defined by said symmetrical distribution of the nozzles ensures a supply of cooling fluid and identical lubrication, either for each of said work rolls, for one side of said work roll facing the tape entrance and the other side of said roll facing the tape exit.
  • the device according to the invention is characterized in that said nozzle system comprises at least one nozzle attached to at least one support, or in particular an axial abutment support, integrating or not a bearing, with one of said working cylinders.
  • fixing said nozzle to said support allows said watering in a mean direction substantially tangent to the axis of one of said working rolls, in particular forming said angle between 0 ° and 15 ° with the axis of one of said working cylinders.
  • the device according to the invention could be characterized in that the nozzle system is adapted to water at least a portion of a watering surface defined, according to a first geometry, by a half-plane of strip surface coming from one of said contact generators and a surface of the working roll between this same contact generator and one of said bearing generatrices, such that said watering surface is included in a dihedron acute formed by a first half-plane corresponding to said half-plane of strip surface from said same contact generator and a second half-plane from said same contact generator and comprising said support generatrix.
  • the device according to the invention could for example be characterized in that the nozzle system is adapted to water at least a portion of a defined watering surface, according to a second geometry, by a surface of the working cylinder between one of its generatrices of support, and, its generator of support.
  • the device according to the invention could for example be characterized in that the nozzle system is adapted to combine the watering of watering surfaces defined according to said first geometry and / or said second geometry.
  • the nozzle system according to the invention could for example be adapted to simultaneously water at least a portion of at least two of said watering surfaces defined according to at least one of said geometries.
  • the nozzle system is capable of simultaneously watering at least a portion of all the watering surfaces according to said first geometry lying predominantly on the same side of said perpendicular plane, or in said mean direction substantially perpendicular to the longitudinal axis of said work roll, or in said mean direction substantially tangent to the axis of said work roll.
  • the second watering mode applies to a continuous rolling, said irrigated portion then being on the side of an inlet of the rolled strip in the rolling stand.
  • the nozzle system is able to simultaneously water at least a portion of all the watering surfaces defined according to said second geometry, or in said mean direction substantially perpendicular to the longitudinal axis of said working cylinder. or in said mean direction substantially tangent to the axis of said work roll.
  • the nozzle system is capable of simultaneously watering at least a portion of all the surfaces defined according to said second geometry, which is predominantly on the same side of the perpendicular axis, or in said mean direction substantially perpendicular to the axis. longitudinal of said working cylinder, or in said mean direction substantially tangent to the axis of said working cylinder.
  • the nozzle system is capable of simultaneously watering at least a portion of all the surfaces defined according to said first and said second geometry and being predominantly on the same side of said perpendicular plane, or in said mean direction substantially perpendicular to the longitudinal axis of said work roll, or in said middle direction substantially tangent to the axis of said work roll.
  • the nozzle system is able to simultaneously water at least a portion of all the surfaces defined according to said first geometry and being predominantly on one side of said perpendicular plane, as well as at least a part of all the surfaces. defined according to said second geometry and being predominantly on the other side of said perpendicular plane, or in said mean direction substantially perpendicular to the longitudinal axis of said working cylinder, or in said mean direction substantially tangent to the axis of said work roll.
  • the nozzle system is able to simultaneously water at least a portion of all the surfaces defined according to said first and said second geometry, or in said mean direction substantially perpendicular to the longitudinal axis of said work roll, or in said mean direction substantially tangent to the axis of said working cylinder.
  • the device according to the invention is characterized in that the nozzle system is capable of alternately watering said watering surfaces defined according to at least one of said geometries.
  • the nozzle system is able to make an alternation of the watering of said watering surfaces coincide with an alternation linked to the running direction of the band. Indeed, when the band scrolls in a first direction, a first watering is performed in a first manner, then, when the running direction of the band is reversed, a second watering is performed in a second manner, said second way being defined such that said second watering is substantially symmetrical to said first watering with respect to said perpendicular plane.
  • the passage of said first watering said second watering is automatically performed when the running direction of the band is reversed.
  • the alternation of the watering allows, with respect to a reference linked to the rolling stand, to vary the watering according to the direction of travel of the strip, so that, compared to a reference linked to the sense banding, the watering remains substantially identical.
  • the device according to the invention is characterized in that a flow control system is adapted to control and to vary the flow of watering of at least one of said nozzles.
  • this control and this flow rate variation make it possible to adapt the flow rate of each nozzle of said watering system as a function, for example, of a position or location of the nozzle in the rolling stand, of a measurement of a temperature profile according to the width of the strip or the length of the working roll.
  • the flow rate of said nozzle is able to vary over time in a manner controlled by said control system.
  • the nozzles may be fed by a single collector or a plurality of collectors allowing a fractional supply of the fluid nozzles, by adjusting the flow rate of the fluid of each of the collectors between zero and a maximum value.
  • this fractional feed can be controlled by a member for measuring the transverse flatness of the rolled strip.
  • the figure 1 shows a watering of a sexto mill laterally supported according to the prior art.
  • the strip (1) passes between two working cylinders (2a, 2b) supported vertically by a first pair of intermediate support cylinders (3a, 3b), themselves supported vertically by a second pair of final support cylinders (4a, 4b) bearing on said first pair of support rolls (3a, 3b).
  • the working cylinders (2a, 2b) are also supported laterally by two pairs of lateral bearing cylinders (5a, 5b) on the input side of the strip and (5'a, 5'b) on the output side.
  • Each of the lateral support cylinders is itself supported laterally by two rows of support rollers (6), each row being composed of a plurality of rollers arranged side by side along a common axis on a common support (10). two rows.
  • Sprinkler nozzles (7a, 7b) dispense fluid for lubrication of the strip prior to entering the right-of-way and other nozzles (7'a, 7'b) dispense fluid for cooling the web after it leaves the right-of-way.
  • Other watering nozzles (9a, 9a ', 9b, 9b') cool the intermediate and support rolls and, indirectly by conduction between rolls, that of the working rolls.
  • the watering nozzles (11a, 11b) interposed between said rollers (6) each distribute the watering fluid in a respective dihedron.
  • at least one of said watering nozzles (11a) distributes the watering fluid in the dihedron formed by a first incoming band surface half-plane coming from one of said contact generators of one of said cylinders working (2a) and a second half plane coming from the same contact generatrix and comprising said support generatrix of one of said working cylinder (2a), such that the two half-planes and the nozzle (11a) are located on the same side of the tape.
  • At least one other of said watering nozzles (11b) distributes the watering fluid in the dihedron formed by another first incoming band surface half-plane coming from another of said contact generators of the other of said working cylinders (2b) and another second half-plane coming from the same other contact generator and comprising said support generatrix of the other of said working cylinder (2b), so that the other two half-planes and said other nozzle (11b) are located on the same other side of the strip.
  • other nozzles (11'a, 11'b) distribute the watering fluid each respectively in another dihedron on the output side of the strip, so that the second system of watering and watered surfaces are in particular substantially symmetrical to said first watering system relative to said perpendicular plane (P).
  • the nozzles (14a, 14b) for watering distribute the watering fluid each respectively in a respective dihedron. At least one of said watering nozzles (14a) distributes the watering fluid in the dihedron formed by a first half-plane parallel to the incoming band coming from one of said bearing generatrices of one of said work rolls (2a), and a second half-plane from the same bearing generatrix and comprising the support generatrix of the same working cylinder (2a), so that the two half-planes and the nozzle (14a) are located d one side of the band.
  • At least one of said other nozzles (14b) for watering distributes the irrigation fluid in the dihedron formed by another first half-plane parallel to the incoming band coming from another of said bearing generatrices of the other of said work rolls (2b) and another second half-plane from the same other generator support member and including the support generator of the same other work roll (2b), so that the other two half-planes and said other nozzle (14b) are located on the same other side of the strip.
  • nozzles 14'a, 14'b
  • the figure 3 shows the watering of a laterally supported sexto mill, different from the watering presented in figure 2 only in that said watering is also feasible from at least one nozzle system mounted on at least one support of said working rolls (2a, 2b).
  • nozzles or groups of spray nozzles can in particular be installed directly near at least one of the bearings or one of the axial abutment supports of said work rolls (2a, 2b), on both sides. other of said perpendicular plane (P).
  • at least two nozzles (12a, 12b) for watering each distribute the watering fluid in a respective dihedron.
  • At least one of said watering nozzles (12a) distributes the watering fluid in the dihedron formed by a first incoming band surface half-plane coming from one of said contact generators of one of said cylinders working piece (2a), and a second half-plane coming from the same contact generatrix and comprising said support generatrix of one of said working cylinder (2a), such as the two half-planes and the nozzle (12a). ) are located on the same band side.
  • At least one of said other watering nozzles (12b) distributes the watering fluid in the dihedron formed by another first incoming band surface half-plane coming from another of said contact generators belonging to the other said work rolls (2b), and another second half-plane from the same other contact generator and comprising said support generator of the other of said work roll (2b), so that said two other half and said other nozzle (12b) watering are located on the same other side of the band.
  • other watering nozzles (12'a, 12'b) distribute the watering fluid, each respectively in another dihedron on the outlet side of the strip, so that the sixth watering system and the watered surfaces are in particular substantially symmetrical said fifth irrigation system relative to said perpendicular plane (P).
  • At least two nozzles (13a, 13b) for watering distribute the watering fluid each respectively in a respective dihedron.
  • At least one of said watering nozzles (13a) distributes the watering fluid in the dihedron formed by a first half-plane parallel to the incoming band coming from one of said bearing generatrices of one of said working cylinder (2a) and a second half-plane from the same support generator and comprising the support generatrix of said working cylinder (2a), so that the two half-planes and the nozzle (13a) are located on the same side of the strip.
  • At least one of said watering nozzles (13b) distributes the watering fluid in the dihedron formed by another first half-plane parallel to the incoming band coming from another of said support generators of the other said work rolls (2b) and another second half-plane from the same other support generator and including the support generator of the other of said work rolls (2b), so that the other two half-planes and said other nozzle (13b) are located on the same other side of the band.
  • other nozzles (13'a, 13'b) distribute the watering fluid each respectively in another dihedron on the output side of the strip, so that the eighth system and watered surfaces are in particular substantially symmetrical said seventh watering system relative to said perpendicular plane (P).
  • the orientation of the nozzles according to the fifth, sixth, seventh and eighth watering systems is such that the watering fluid is injected on the working cylinders (2a, 2b) and / or on the strip (1) at an angle between 0 and 15 ° with respect to the axis of said working rolls (2a, 2b), while the orientation of the nozzles according to the first, second, third and fourth watering systems is such that the watering fluid is injected on the working cylinders (2a, 2b) and / or on the strip (1) in a mean direction substantially perpendicular to the axes of said work rolls.
  • the nozzles (12a, 12b, 12'a, 12'b, 13a, 13b, 13'a, 13'b) forming the fifth to eighth irrigation system are capable of being mounted on one of the supports of one end of said cylinders working piece (2a, 2b), in particular, on each of the supports supporting each of the ends of said work rolls, or in the vicinity of said ends, such as for example in the vicinity or on an axial abutment support of one of said ends of said work rolls; one of said work rolls.
  • said nozzles (12a, 12b, 12'a, 12'b, 13a, 13b, 13'a, 13'b) forming the fifth to eighth watering system are at least partly arranged substantially symmetrically with respect to other nozzles, mounted on another support of said working rolls (2a, 2b), in particular in the vicinity of said support or the end of said axis of the work roll, said other support holding the other ends of said work rolls ( 2a, 2b).
  • the figure 4 shows an example of arrangement of the watering nozzles for a sexto mill supported laterally by support rollers (6) supporting lateral support rollers (5), each of said nozzles being able to water at least one of said work rolls (2) at an angle alpha ( ⁇ ) between 0 ° and 15 ° relative to the longitudinal axis (L) of rotation of said work rolls (2).
  • a neighborhood of the ends of the working rolls (2) comprises for each of said work rolls, at least one watering system comprising one or more nozzles (13, 13 ', 15, 15') adapted to water said working rolls (2) by means of sprinkler jets directed along the length of said work rolls (2), so that said jet of nozzles, which nozzles face each other and are at two distinct ends of a said working rolls are opposing jets, in particular symmetrical, which make it possible to water on the one hand parts of said working rolls (2) close to the band and, on the other hand, parts of said rolls (2) working close to said support cylinders, the direction of said jet forming angles between 0 ° and 15 ° with respect to the longitudinal axis (L) of rotation of said work rolls (2).
  • each of the supports (17, 18) of said working rolls in the vicinity of an axial abutment (20) or a bearing of a said working cylinder, or preferably an axial abutment support (19) which already comprises a lubrication system for lubricating bearing members of the work rolls and a modification for serving to supply one of said nozzle systems suitable for watering said work rolls in a direction substantially tangent to the axis of said work rolls.
  • At least a first watering can advantageously be completed by at least a second watering.
  • Said first watering is carried out by a first nozzle (15) mounted in the vicinity of one of the ends of one of said working rolls (2), said first nozzle (15) watering at least a first part of a surface of said cylinder of work (2), said first portion being predominantly on one side of said perpendicular plane (P) and being either between a first contact generator belonging to the band surface plane and a first support generator, or between said first bearing generator and said generatrix supporting said cylinder.
  • Said second watering is then carried out by a second nozzle (13 ') mounted in the vicinity of the other end of said working cylinder (2), said second nozzle (13') watering at least a second portion of a surface of said cylinder of work (2), said second portion being predominantly on the other side of said perpendicular plane (P) and being between a second contact generatrix belonging to the band surface plane and a second support generatrix, or between said second support generatrix and said support generatrix of said working cylinder (2).
  • a nozzle mounted for example on a bearing on one side of the perpendicular plane (P) and another nozzle mounted on an opposite bearing on the other side of the perpendicular plane (P) are suitable for provide watering to avoid creating cooling gradients along the working cylinder concerned.
  • the figure 5 shows an exemplary embodiment of a support roller (6) adapted to the implementation of the device according to the invention.
  • a cylindrical liner (61) has at each of its ends a rolling element (62) ball or roller or needle and possibly a seal (63) not exceeding the overall size of said liner.
  • the fixing of the rollers on supports (10) of rollers which transmit the lateral forces from the rolling mill to the structure of the mill is provided by an axis (64) which completely traverses the roller supporting the rolling members (62) and which is assembled to the supports, at each of its two ends, in particular by a screw passing through a fixing hole (641).
  • the coolant nozzles are mounted on the roll supports (10) at the assembly regions of the roll pins (64) to the said supports (10), so that at each attachment of the said roll pin (64) to the said support (10) is positioned at least one of said nozzles.
  • an axial channel (642) of compressed air circulation crosses the axis along its length and distributes compressed air between the rolling members (62) and the seals (63) by radial channels not shown.
  • a compressed air sealing member (644) is mounted between two adjacent ends of two consecutive rollers.
  • a bushing (643) ensures the continuity of the axial channel (642) between two rollers.
  • the figure 6 shows an exemplary embodiment, according to the invention, of irrigation device substantially perpendicular to one of said working rolls. It is more specifically the assembly of a line or row of support rollers (6) according to the invention.
  • Two lateral support rollers (5) support a work roll (2) and are themselves supported by two rows of support rollers (6).
  • On a support (10) are fixed the rollers (6) as well as the nozzles, such as for example the nozzle (14) whose jet (141) sprinkles with a watering fluid at least a part of the surface of a said work rolls (2).
  • Each of said nozzles fixed at the level of attachment to the support (10) of rollers of the axis of said rollers is adapted to water one of said rolls, in particular in a direction substantially perpendicular to the longitudinal axis of rotation (L) of a said work rolls (2).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Spray Control Apparatus (AREA)
  • Metal Rolling (AREA)
EP09784174.6A 2009-02-02 2009-02-02 Methode et dispositif d'arrosage d'une installation de laminage Active EP2391459B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR2009/000113 WO2010086514A1 (fr) 2009-02-02 2009-02-02 Methode et dispositif d'arrosage d'une installation de laminage

Publications (2)

Publication Number Publication Date
EP2391459A1 EP2391459A1 (fr) 2011-12-07
EP2391459B1 true EP2391459B1 (fr) 2014-08-06

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EP09784174.6A Active EP2391459B1 (fr) 2009-02-02 2009-02-02 Methode et dispositif d'arrosage d'une installation de laminage

Country Status (5)

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US (1) US8966951B2 (pt)
EP (1) EP2391459B1 (pt)
CN (1) CN102300650B (pt)
BR (1) BRPI0924316B1 (pt)
WO (1) WO2010086514A1 (pt)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
FR3078494A1 (fr) * 2018-03-05 2019-09-06 Fives Dms Procede de laminage avec etape de reajustement de l'inter-espace entre le cylindre d'appui lateral et le cylindre de soutien

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Publication number Priority date Publication date Assignee Title
EP2676744A1 (fr) * 2012-06-22 2013-12-25 Siemens VAI Metals Technologies GmbH Dispositif d'arrosage d'une installation de laminage et méthode d'extraction/introduction dudit système hors/dans ladite cage de laminage
FR3008633B1 (fr) * 2013-07-22 2015-08-07 Fives Dms Laminoir equipe d'au moins une buse de refroidissement
FR3010332B1 (fr) * 2013-09-12 2015-10-02 Fives Dms Cassette pour laminoir et laminoir equipe d'une telle cassette
EP3150292A1 (de) 2015-10-02 2017-04-05 Primetals Technologies Austria GmbH Anstellvorrichtung
CN108097723B (zh) * 2017-12-15 2024-03-19 无锡华精新材股份有限公司 轧制取向硅钢用20辊轧机分布式冷却装置和使用方法
FR3077015B1 (fr) 2018-01-25 2020-01-24 Fives Dms Laminoir avec dispositif de refroidissement ou lubrification

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Publication number Priority date Publication date Assignee Title
FR3078494A1 (fr) * 2018-03-05 2019-09-06 Fives Dms Procede de laminage avec etape de reajustement de l'inter-espace entre le cylindre d'appui lateral et le cylindre de soutien
WO2019170994A1 (fr) * 2018-03-05 2019-09-12 Fives Dms Procede de laminage avec etape de reajustement de l'inter-espace entre le cylindre d'appui lateral et le cylindre de soutien

Also Published As

Publication number Publication date
CN102300650A (zh) 2011-12-28
EP2391459A1 (fr) 2011-12-07
WO2010086514A1 (fr) 2010-08-05
US8966951B2 (en) 2015-03-03
BRPI0924316B1 (pt) 2020-09-08
CN102300650B (zh) 2014-03-05
US20110278367A1 (en) 2011-11-17

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