EP3685930B1 - Changement local de la fente de laminage dans la zone marginale d'une bande laminée - Google Patents

Changement local de la fente de laminage dans la zone marginale d'une bande laminée Download PDF

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Publication number
EP3685930B1
EP3685930B1 EP19153870.1A EP19153870A EP3685930B1 EP 3685930 B1 EP3685930 B1 EP 3685930B1 EP 19153870 A EP19153870 A EP 19153870A EP 3685930 B1 EP3685930 B1 EP 3685930B1
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EP
European Patent Office
Prior art keywords
working roller
wear
strip
running surface
rolling
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EP19153870.1A
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German (de)
English (en)
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EP3685930A1 (fr
Inventor
Johannes Dagner
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Primetals Technologies Germany GmbH
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Primetals Technologies Germany GmbH
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Application filed by Primetals Technologies Germany GmbH filed Critical Primetals Technologies Germany GmbH
Priority to EP19153870.1A priority Critical patent/EP3685930B1/fr
Priority to PCT/EP2020/050527 priority patent/WO2020156781A1/fr
Priority to JP2021543432A priority patent/JP2022523907A/ja
Priority to PCT/EP2020/050684 priority patent/WO2020156787A1/fr
Priority to CN202080011252.8A priority patent/CN113316491B/zh
Priority to EP20700385.6A priority patent/EP3917694B1/fr
Priority to ES20700385T priority patent/ES2954881T3/es
Priority to US17/310,246 priority patent/US11919059B2/en
Priority to US16/751,547 priority patent/US11413669B2/en
Priority to RU2020103343A priority patent/RU2764915C2/ru
Priority to CN202010078927.2A priority patent/CN111482456A/zh
Publication of EP3685930A1 publication Critical patent/EP3685930A1/fr
Publication of EP3685930B1 publication Critical patent/EP3685930B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • 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
    • 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
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • 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
    • B21B27/02—Shape or construction of rolls
    • B21B27/021—Rolls for sheets or strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/40—Control of flatness or profile during rolling of strip, sheets or plates using axial shifting of the rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B2001/225—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by hot-rolling
    • 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
    • B21B2013/021—Twin mills
    • 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
    • B21B27/02—Shape or construction of rolls
    • B21B27/021—Rolls for sheets or strips
    • B21B2027/022—Rolls having tapered ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2263/00—Shape of product
    • B21B2263/02—Profile, e.g. of plate, hot strip, sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2267/00—Roll parameters
    • B21B2267/24—Roll wear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/12—Axial shifting the rolls
    • B21B2269/14—Work rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product

Definitions

  • the present invention relates to the technical field of rolling mill technology, specifically the hot rolling of a metallic material, in particular steel or aluminum, to form a rolled strip in a rolling stand.
  • the upper and the lower work roll of a roll stand each have a conical section, an inwardly extending running surface and a cylindrical shoulder.
  • the upper work roll is installed in the roll stand in the opposite direction to the lower work roll.
  • the work rolls are moved in opposite axial directions during rolling.
  • One edge of the rolled strip always rests on the edge between the conical section and the running surface.
  • the service life of the work rolls during a rolling campaign can be extended to 150 km and more without changing or regrinding the work rolls. How the roll gap between the upper and the lower work roll can be specifically changed locally in the area of the strip edges of the rolled strip is not apparent from the document.
  • the object of the invention is to provide a method and a device for locally changing the roll gap in the area of the strip edges of a strip rolled in a roll stand.
  • the roll gap should be able to be increased or decreased in a targeted manner locally in the area of the strip edges of the strip during hot rolling without changing the roll gap globally.
  • a local change in the roll gap should lead to a local change in the decrease in thickness in the area of the strip edges of the strip.
  • the local change in the roll gap should be able to influence the flatness or the profile of the strip. Nevertheless, it should be possible to maintain the uninterrupted hot rolling of the strip in the roll stand over a long period of time without the work rolls having to be changed or reground.
  • a local enlargement of the roll gap in the area of the strip edges is accompanied by a reduction of at least one local roll diameter of the work rolls in the area of the strip edges.
  • the roll stand and the work rolls of the roll stand are, for example, according to FIG WO 2017/215595 educated. In the present invention, however, it is not absolutely necessary for the running surfaces of the work rolls to run inwards are.
  • the rolling stock is hot-rolled in the roll gap between the upper and lower work rolls of the roll stand, the work rolls being worn out by contact with the rolling stock. Specifically, the running surfaces of the work rolls are worn, with the radius of the running surfaces decreasing by ⁇ r.
  • the work rolls are shifted in opposite axial directions, for example the upper work roll to the right and the lower work roll to the left.
  • the local roll gap is enlarged in the area of the strip edges of the strip, whereby the profile or the flatness of the rolled strip can be influenced in a targeted manner. Due to the local enlargement of the roll gap in the area of the strip edges, the strip becomes somewhat thicker in this area than in other areas (in other words, the so-called edge drop in the area of the strip edges is reduced), which has a direct and immediate effect on the profile or the Affects the flatness of the belt. To put it simply, the strip edges or the area of the strip edges of the strip are relieved by the local enlargement of the roll gap in the area of the strip edges.
  • ⁇ r indicates the wear of the running surface of a work roll in the radial direction and ⁇ the angle of inclination of the conical section of the respective work roll.
  • the axial displacement speed v, ie the first time derivative of the displacement path s, of the work roll can be set to a value v ⁇ s ⁇ > ⁇ ⁇ r tan ⁇ can be set.
  • ⁇ r indicates the speed of wear of the running surface of a work roll in the radial direction. It is possible that the displacement speed v over a longer period of time to a value greater than ⁇ ⁇ r tan ⁇ is set, or that the displacement speed v is only within a limited time window during operation to a value greater than ⁇ ⁇ r tan ⁇ is set.
  • the roll stand or the work rolls of the roll stand can, for example, according to FIG WO 2017/215595 be trained.
  • a respective work roll is displaced by a distance s ⁇ ⁇ r tan ⁇ postponed.
  • the local roll gap in the area of the strip edges of the rolled strip is reduced, whereby the profile or the flatness of the rolled strip can be influenced in a targeted manner.
  • the strip edges or the area of the strip edges of the strip are stressed by the local reduction of the roll gap in the area of the strip edges. ⁇ r in turn indicates the wear on the running surface of a work roll in the radial direction and ⁇ the angle of inclination of the conical section of the respective work roll.
  • the axial displacement speed v, ie the first time derivative of the displacement path s, of the work roll can be set to a value v ⁇ s ⁇ ⁇ ⁇ ⁇ r tan ⁇ can be set.
  • ⁇ r indicates the speed of wear of the running surface of a work roll in the radial direction.
  • the method according to the invention influences primarily the flatness and, to a lesser extent, the profile of the strip. This is due to the fact that the so-called cross flow is low in the case of very thin strips.
  • the method according to the invention is used in the case of strips with a thickness of> 2 mm, it is primarily the profile and, to a lesser extent, the flatness of the strip that is influenced.
  • the device according to the invention is suitable both for the local enlargement and also for the local reduction in size of a roll gap in the area of the strip edges of a rolled strip in a roll stand.
  • the profile and / or the flatness of the strip can be influenced in a targeted manner.
  • the device for determining the radial wear or the rate of wear ⁇ r of the running surface of the work rolls determines the wear on the running surface in the radial direction.
  • the determination can be made either by measurement, or preferably with the aid of a wear model, which takes into account, for example, the rolling force F, the distance covered by the work roll s circumference and / or the rolling time.
  • ⁇ indicates the angle in radians for the revolutions covered by the work roll.
  • the measuring device for determining the profile or the flatness of the rolled strip can either contact the measured variables, eg optically or electromagnetically, or with contact, eg by means of a measuring roller.
  • the measuring device is arranged in the direction of mass flow after the roll stand, but preferably before a cooling section for cooling the hot-rolled strip.
  • the wear or the rate of wear can be determined from the, typically vertical, distance between the work rolls and the measured thickness of the strip.
  • the device for determining the wear ⁇ r or the rate of wear ⁇ r of the running surface has a wear model (see FIG EP 2 548 665 B1 ), wherein the wear model is connected to at least one of the group of a rolling force measuring device for determining the rolling force F, the distance covered by the work roll s circumference and a clock for determining the rolling time.
  • the displacement device itself can be, for example, an electromechanical (e.g. a ball screw with an electric motor) or a hydraulic drive.
  • the Figure 1 shows schematically a roll stand 2 as part of a device for locally changing a roll gap in the area of the strip edges 10 of a rolled strip 1.
  • the rolling stock is hot-rolled in the roll gap between the upper work roll 3 and the lower work roll 4.
  • Each work roll 3, 4 has two ends 5, each of which is slidably installed in a chock 6 in a roll stand, not shown, of the roll stand 2.
  • each work roll 3, 4 comprises a conical section 7 and a running surface 8 (see also Fig 7 ).
  • the upper work roll 3 is installed in the roll stand 2 in the opposite direction to the lower work roll 4.
  • the upper and lower work rolls 3, 4 can be displaced in the axial direction via separate displacement devices 9 during operation.
  • the upper work roll 3 is shifted to the right during operation; the lower work roll 4, however, to the left (see arrows).
  • the global roll gap between the upper and lower work rolls 3, 4 can be adjusted by adjusting devices 16.
  • the upper work roll has a device for determining the wear 11 or a wear model.
  • a single device 11 or a single wear model is sufficient if the work rolls 3, 4 are made of the same material.
  • the upper and the lower work roll 3, 4 each have a separate one Have device for determining the wear 11 or a wear model.
  • the measurement of the wear ⁇ r or the speed of wear ⁇ r of the running surface 8 of the work rolls 3, 4 in the radial direction can be carried out with contact, for example by a roller that touches the running surface 8, or without contact, for example optically. Since the axial displacement of the work rolls in the roll stand to compensate for wear is already from the WO 2017/215595 A1 is known, this document is incorporated by reference. However, it is not known from this document how the local roll gap in the area of the strip edges of the strip can be changed in a targeted manner.
  • backup rolls have been omitted for the sake of clarity. It is known to every person skilled in the art of rolling mill technology that backup rolls are common and counteract sagging of the work rolls.
  • a device for locally changing the roll gap in area b of the strip edges of a rolled strip in a roll stand 2 of a five-stand finishing mill, for example in a casting-rolling compound system is shown schematically.
  • the rolling stock not shown, is fed to the finishing rolling train with the rolling stands 2a to 2f via a roller table 17 and is finish-rolled there in the warm state.
  • the wear ⁇ r or the wear speed ⁇ r of the running surfaces 8 of the work rolls 3, 4 is measured by the device 11 (see FIG Fig 1 ).
  • the device further comprises a measuring device 12 for determining the profile or the flatness of the rolled strip.
  • This measuring device is arranged after the roll stand 2 in the direction of mass flow.
  • the actual profile PR ist is fed to a control device 13.
  • the control device 13 is also supplied with the target profile PR Soll.
  • the controller 13 computes, taking into account the wear .DELTA.R or the wear rate delta r, the measured profile Pr and the target profile PR to the displacement s, and the shifting speed s for the upper and the lower work roll 3, 4 (see Fig 1 ).
  • the local roll gap in the area of the strip edges of the strip can be changed in a targeted manner.
  • the rolled strip is cooled in a cooling section 18 and then conveyed out.
  • a strip 1 is hot-rolled in the roll gap between the upper work roll 3 and the lower work roll 4.
  • the tape has a thickness D 0 .
  • Both work rolls 3, 4 each have two ends 5, a conical section 7 and a running surface 8.
  • the upper work roll 3 is installed in the opposite direction to the lower work roll 4.
  • the running surfaces 8 of the work rolls 3, 4 are worn in the radial direction by an amount ⁇ r (see Fig 3b ). If the vertical distance between the two work rolls 3, 4 is kept constant, the rolled strip 1 then has a thickness of D 0 + 2 ⁇ r. By continuing hot rolling, the running surfaces 8 of the work rolls 3, 4 are worn by the amount 2. ⁇ r (see Fig 3c ), so that the thickness of the band 1 is then D 0 + 4 ⁇ r.
  • Fig 3d can be seen that a detail of the Fig 3c shows, pronounced wear edges are formed in the work rolls 3, 4, which lead to a local reduction in the roll gap in the area of the strip edges 10 or a load on the strip edges of the rolled strip 1. As a result, the rolled strip 1 is thinner in the area of the strip edges 10 than in the central area of the strip 1. Since the work rolls 3, 4 are not axially displaced during hot rolling, the method is not according to the invention.
  • the work rolls 3, 4 are axially displaced so that an upper and a lower strip edge 10 of the strip 1 always rests on an edge between the conical section 7 and the newly formed (because worn) running surface 8 of the respective work roll 3, 4.
  • Fig 4c is the wear of the running surface 8 of the work roll 3, 4 2.
  • ⁇ r this results in a displacement path 2 .
  • s 1 2 ⁇ r tan ⁇ .
  • the upper work roll 3 is shifted to the right and the lower work roll 4 to the left.
  • this method results in the strip 1 having a constant thickness across the width in the case of a non-profiled work roll 3, 4.
  • the rolled strip 1 is just as thin in the area of the strip edges 10 as in the central area of the strip 1.
  • the local roll gap in the area of the strip edges is not changed or the strip edges of the strip 10 are neither adjusted nor loaded relieved.
  • the work rolls 3, 4 are axially displaced in such a way that an upper and a lower strip edge 10 of the strip 1 always rests on the conical section 7 of the respective work roll 3, 4.
  • the displacement path of a work roll 3, 4 in the axial direction follows the condition in this case s > ⁇ r tan ⁇ , where ⁇ r indicates the wear of a work roll 3, 4 in the radial direction and ⁇ indicates the angle of inclination of the conical section.
  • the shift can be written over the speed of wear ⁇ r, in which case a work roll 3, 4 is at an axial speed v ⁇ s ⁇ > ⁇ ⁇ r tan ⁇ is shifted in the axial direction.
  • Fig 5b is the wear of the Running surface 8 of the work roll 3,4 ⁇ r ; this results in a displacement path s 2 > ⁇ r tan ⁇ .
  • Fig 5c the wear of the running surface 8 of the work roll is 3.4 2. ⁇ r ; this results in a displacement path 2 . s 2 > 2 ⁇ r tan ⁇ .
  • the upper work roll 3 is shifted to the right and the lower work roll 4 to the left.
  • a detail of the Fig 5c represents, the local roll gap in the area of the strip edges 10 of the rolled strip 1 is enlarged or the strip edges are relieved by this method. As a result, the rolled strip 1 is thicker in the area of the strip edges 10 than in the central area of the strip 1.
  • the work rolls 3, 4 are axially displaced so that the displacement path of a work roll 3, 4 in the axial direction of the condition s ⁇ ⁇ r tan ⁇ follows, where ⁇ r indicates the wear of a work roll 3, 4 in the radial direction and ⁇ indicates the helix angle of the conical section.
  • the shift can be written over the speed of wear ⁇ r , with a work roll 3, 4 then having an axial speed v ⁇ s ⁇ ⁇ ⁇ ⁇ r tan ⁇ is shifted in the axial direction.
  • Fig 5b is the wear of the running surface 8 of the work roll 3, 4 ⁇ r ; this results in a displacement path s 3 ⁇ ⁇ r tan ⁇ .
  • Fig 6c is the wear of the running surface 8 of the work roll 3, 4 2. ⁇ r ; this results in a displacement path 2 . s 3 ⁇ 2 ⁇ r tan ⁇ The upper work roll 3 is shifted to the right and the lower work roll 4 to the left.
  • a detail of the Fig 6c represents, the local roll gap in the area of the strip edges 10 of the rolled strip 1 is reduced or the strip edges are loaded by this method. As a result, the rolled strip 1 is thinner in the area of the strip edges 10 than in the central area of the strip 1.
  • the Fig 7 shows the geometric definition of the helix angle ⁇ of the conical section 7 of a work roll.
  • the Fig 8 schematically the areas b of the band edges 10 of a band 1.
  • the longitudinal extent of the two areas b of the band edges is up to 10 or 20% of the band width B. That means that 1 area b of the band edges is up to 5 or 10% of the band width B can make out.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)

Claims (10)

  1. Procédé pour l'agrandissement local d'une fente de laminage dans la zone des arêtes de bande (10) d'une bande laminée (1) dans une cage de laminoir (2), dans lequel la cage de laminoir (2) comporte :
    - un cylindre de travail supérieur (3) et un cylindre de travail inférieur (4), dans lequel chaque cylindre de travail (3, 4) comprend deux extrémités (5) pour le montage rotatif du cylindre de travail (2, 3) dans des pièces d'insertion (6),
    - dans lequel chaque cylindre de travail (3, 4) comprend dans la direction axiale (X) une section conique (7) et ensuite une surface de roulement (8),
    - dans lequel le cylindre de travail supérieur (3) est installé dans la direction inverse par rapport au cylindre de travail inférieur (4),
    - dans lequel chaque cylindre de travail comprend un dispositif de coulissement (9) séparé pour le coulissement axial du cylindre de travail (3, 4), comportant les étapes de procédé :
    - laminage à chaud d'une matière à laminer dans la cage de laminoir (2), dans lequel l'étendue radiale de la surface de roulement (8) d'un cylindre de travail (3, 4) diminue de Δr pendant le laminage,
    - coulissement axial des cylindres de travail (3, 4) dans des directions opposées d'une course de coulissement s > Δr tan α
    Figure imgb0036
    , dans lequel Δr indique l'usure de la surface de roulement (8) dans la direction radiale (R) et α indique l'angle d'inclinaison de la section conique (7) du cylindre de travail (3, 4) respectif.
  2. Procédé pour l'agrandissement local d'une fente de laminage dans la zone des arêtes de bande (10) d'une bande laminée (1) dans une cage de laminoir (2), dans lequel la cage de laminoir (2) comporte :
    - un cylindre de travail supérieur (3) et un cylindre de travail inférieur (4), dans lequel chaque cylindre de travail (3, 4) comprend deux extrémités (5) pour le montage rotatif du cylindre de travail (3, 4) dans des pièces d'insertion (6),
    - dans lequel chaque cylindre de travail (3, 4) comprend dans la direction axiale (X) une section conique (7) et ensuite une surface de roulement (8),
    - dans lequel le cylindre de travail supérieur (3) est installé dans la direction inverse par rapport au cylindre de travail inférieur (4),
    - dans lequel chaque cylindre de travail (3, 4) comprend un dispositif de coulissement (9) séparé pour le coulissement axial du cylindre de travail (3, 4), comportant les étapes de procédé :
    - laminage à chaud d'une matière à laminer dans la cage de laminoir (2), dans lequel l'étendue radiale de la surface de roulement (8) d'un cylindre de travail (3, 4) diminue avec une vitesse Δ̇r pendant le laminage,
    - coulissement axial des cylindres de travail (3, 4) dans des directions opposées avec une vitesse de coulissement v ≡ s ˙ > Δ ˙ r tan α
    Figure imgb0037
     , dans lequel indique la vitesse de l'usure de la surface de roulement (8) dans la direction radiale (R) et α indique l'angle d'inclinaison de la section conique (7) du cylindre de travail (3, 4) respectif.
  3. Procédé pour le rétrécissement local d'une fente de laminage dans la zone des arêtes de bande (10) d'une bande laminée (1) dans une cage de laminoir (2), dans lequel la cage de laminoir (2) comporte :
    - un cylindre de travail supérieur (3) et un cylindre de travail inférieur (4), dans lequel chaque cylindre de travail (3, 4) comprend deux extrémités (5) pour le montage rotatif du cylindre de travail (3, 4) dans des pièces d'insertion (6),
    - dans lequel chaque cylindre de travail (3, 4) comprend dans la direction axiale (X) une section conique (7) et ensuite une surface de roulement (8),
    - dans lequel le cylindre de travail supérieur (3) est installé dans la direction inverse par rapport au cylindre de travail inférieur (4),
    - dans lequel chaque cylindre de travail (3, 4) comprend un dispositif de coulissement (9) séparé pour le coulissement axial du cylindre de travail (3, 4), comportant les étapes de procédé :
    - laminage à chaud d'une matière à laminer dans la cage de laminoir (2), dans lequel l'étendue radiale de la surface de roulement (8) d'un cylindre de travail (3, 4) diminue de Δr pendant le laminage,
    - coulissement axial des cylindres de travail (3, 4) dans des directions opposées d'une course de coulissement s < Δr tan α
    Figure imgb0038
     , dans lequel Δr indique l'usure de la surface de roulement (8) dans la direction radiale (R) et α indique l'angle d'inclinaison de la section conique (7) du cylindre de travail (3, 4) respectif.
  4. Procédé pour le rétrécissement local d'une fente de laminage dans la zone des arêtes de bande (10) d'une bande laminée (1) dans une cage de laminoir (2), dans lequel la cage de laminoir (2) comporte :
    - un cylindre de travail supérieur (3) et un cylindre de travail inférieur (4), dans lequel chaque cylindre de travail (3, 4) comprend deux extrémités (5) pour le montage rotatif du cylindre de travail (3, 4) dans des pièces d'insertion (6),
    - dans lequel chaque cylindre de travail (3, 4) comprend dans la direction axiale (X) une section conique (7) et ensuite une surface de roulement (8),
    - dans lequel le cylindre de travail supérieur (3) est installé dans la direction inverse par rapport au cylindre de travail inférieur (4),
    - dans lequel chaque cylindre de travail (3, 4) comprend un dispositif de coulissement (9) séparé pour le coulissement axial du cylindre de travail (3, 4), comportant les étapes de procédé :
    - laminage à chaud d'une matière à laminer dans la cage de laminoir (2), dans lequel l'étendue radiale de la surface de roulement (8) d'un cylindre de travail (3, 4) diminue avec une vitesse d'usure Δ̇r pendant le laminage,
    - coulissement axial des cylindres de travail (3, 4) dans des directions opposées avec une vitesse de coulissement v ≡ s ˙ < Δ ˙ r tan α
    Figure imgb0039
    , dans lequel Δ̇r indique la vitesse de l'usure de la surface de roulement (8) dans la direction radiale (R) et α indique l'angle d'inclinaison de la section conique (7) du cylindre de travail (3, 4) respectif.
  5. Procédé selon l'une des revendications 1 à 4, dans lequel dans le cas de bandes (1) très minces avec une épaisseur comprise entre 0,5 et 2 mm, la planéité de la bande (1) est ajustée.
  6. Procédé selon l'une des revendications 1 à 4, dans lequel dans le cas de bandes (1) avec une épaisseur > 2 mm, le profil de la bande (1) est ajusté.
  7. Dispositif pour la modification locale d'une fente de laminage dans la zone des arêtes de bande (10) d'une bande laminée (1) dans une cage de laminoir (2), en particulier pour la mise en œuvre du procédé selon l'une des revendications 1 à 6, dans lequel la cage de laminoir (2) comporte :
    - un cylindre de travail supérieur (3) et un cylindre de travail inférieur (4), dans lequel chaque cylindre de travail (3, 4) comprend deux extrémités (5) pour le montage rotatif du cylindre de travail (3, 4) dans des pièces d'insertion (6),
    - dans lequel chaque cylindre de travail (3, 4) comprend dans la direction axiale (X) une section conique (7) et ensuite une surface de roulement (8),
    - dans lequel le cylindre de travail supérieur (3) est disposé dans la direction inverse par rapport au cylindre de travail inférieur (4),
    - un dispositif de coulissement (9) séparé pour chaque cylindre de travail parmi le cylindre de travail supérieur (3) et le cylindre de travail inférieur (4) pour le coulissement axial du cylindre de travail (3, 4),
    - un dispositif (11) pour la détermination de l'usure Δr ou de la vitesse de l'usure Δ̇r de la surface de roulement (8) d'au moins un cylindre de travail (3, 4) dans la direction radiale,
    - un appareil de mesure (12) pour la détermination du profil et/ou de la planéité de la bande laminée (1), dans lequel le dispositif de mesure (12) est disposé dans la direction de flux massique après la cage de laminoir (2),
    - un dispositif de réglage (13) pour le coulissement axial des cylindres de travail (3, 4) dans des directions opposées en fonction de l'usure Δr ou de la vitesse de l'usure Δ̇r des cylindres de travail (3, 4), ainsi que du profil mesuré PRIst et/ou de la planéité mesurée PLIst de la bande laminée (1), dans lequel le dispositif de réglage (13) est relié de manière signalétique au dispositif (11) pour la détermination de l'usure Δr ou de la vitesse de l'usure Δ̇r et à l'appareil de mesure (12) pour la détermination du profil et/ou de la planéité de la bande laminée (1).
  8. Dispositif selon la revendication 7, caractérisé en ce que le dispositif (11) pour la détermination de l'usure Δr ou de la vitesse de l'usure Δ̇r de la surface de roulement (8) est relié à un dispositif de mesure d'épaisseur (14) pour la mesure de l'épaisseur de la bande laminée (1) et à un dispositif pour la détermination de la distance (15) entre les cylindres de travail supérieur et inférieur (3, 4).
  9. Dispositif selon la revendication 7, caractérisé en ce que le dispositif (11) pour la détermination de l'usure Δr ou de la vitesse de l'usure Δ̇r de la surface de roulement (8) comprend un modèle d'usure, dans lequel le modèle d'usure est relié à au moins l'un des éléments du groupe d'un appareil de mesure de force de laminage pour la détermination de la force de laminage F, du chemin sUmfang parcouru par le cylindre de travail et d'une heure pour la détermination du temps de laminage.
  10. Dispositif selon l'une de revendications 7 à 9, caractérisé en ce que le dispositif de coulissement est un dispositif de coulissement électromécanique ou hydraulique.
EP19153870.1A 2019-01-28 2019-01-28 Changement local de la fente de laminage dans la zone marginale d'une bande laminée Active EP3685930B1 (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP19153870.1A EP3685930B1 (fr) 2019-01-28 2019-01-28 Changement local de la fente de laminage dans la zone marginale d'une bande laminée
PCT/EP2020/050527 WO2020156781A1 (fr) 2019-01-28 2020-01-10 Modification locale de l'emprise dans la zone des arêtes de bord d'une bande laminée
JP2021543432A JP2022523907A (ja) 2019-01-28 2020-01-10 圧延ストリップのストリップエッジの領域におけるロールギャップの局所的変更
ES20700385T ES2954881T3 (es) 2019-01-28 2020-01-13 Cambio del contorno efectivo de una superficie de rodadura de un cilindro de trabajo durante el laminado en caliente de un material a laminar en una caja de laminación para formar una banda laminada
CN202080011252.8A CN113316491B (zh) 2019-01-28 2020-01-13 在将轧件在轧制机架中热轧成所轧制的带材的期间工作辊的工作面的有效轮廓的改变
EP20700385.6A EP3917694B1 (fr) 2019-01-28 2020-01-13 Changement local de la fente de laminage dans la zone marginale d'une bande laminée
PCT/EP2020/050684 WO2020156787A1 (fr) 2019-01-28 2020-01-13 Modification du contour effectif d'une surface de roulement d'un cylindre de travail pendant le laminage à chaud d'un produit à laminer dans une cage de laminoir en une bande laminée
US17/310,246 US11919059B2 (en) 2019-01-28 2020-01-13 Changing the effective contour of a running surface of a working roll during hot rolling of rolling stock in a roll stand to form a rolled strip
US16/751,547 US11413669B2 (en) 2019-01-28 2020-01-24 Locally changing the roll gap in the region of the strip edges of a rolled strip
RU2020103343A RU2764915C2 (ru) 2019-01-28 2020-01-27 Локальное изменение межвалкового зазора в области кромок прокатываемой полосы
CN202010078927.2A CN111482456A (zh) 2019-01-28 2020-02-03 局部改变在轧制带材的带材边缘区域中的轧辊开度

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US20200238353A1 (en) 2020-07-30
JP2022523907A (ja) 2022-04-27
RU2764915C2 (ru) 2022-01-24
WO2020156781A1 (fr) 2020-08-06
US11413669B2 (en) 2022-08-16
CN111482456A (zh) 2020-08-04

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