EP3016754B1 - Installation et procédé pour laminer à chaud des feuillards d'acier - Google Patents

Installation et procédé pour laminer à chaud des feuillards d'acier Download PDF

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Publication number
EP3016754B1
EP3016754B1 EP14736716.3A EP14736716A EP3016754B1 EP 3016754 B1 EP3016754 B1 EP 3016754B1 EP 14736716 A EP14736716 A EP 14736716A EP 3016754 B1 EP3016754 B1 EP 3016754B1
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European Patent Office
Prior art keywords
rolling
cooling
steel strip
hot
stand
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EP14736716.3A
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German (de)
English (en)
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EP3016754A1 (fr
Inventor
Heribert FISCHER
Caspar Schmitt
Andreas Zaum
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ThyssenKrupp Steel Europe AG
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ThyssenKrupp Steel Europe AG
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Classifications

    • 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
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0206—Cooling with means to convey the charge
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0231—Warm rolling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Steel (AREA)

Claims (17)

  1. Installation pour laminer à chaud des feuillards d'acier (S), avec un train de laminage à chaud (2), qui comprend plusieurs cages de laminoir (F1 - F7) traversées l'une après l'autre dans la direction de transport (F) du feuillard d'acier à laminer à chaud (S), et avec une section de refroidissement (5) pour le refroidissement intensif du feuillard d'acier laminé à chaud (S) sortant de la dernière cage de laminoir (F7) du train de laminage (2), dans laquelle le début de la section de refroidissement (5) est déplacé, en considérant la direction de transport (F) du feuillard d'acier à laminer à chaud (S), avant la fin du train de laminage à chaud (2), dans laquelle la section de refroidissement (5) commence à la suite de la dernière cage de laminoir (F5) traversée activement avant l'entrée dans la section de refroidissement (5), dans laquelle il se produit un laminage à chaud du feuillard d'acier respectivement à laminer à chaud (S), dans laquelle la section de refroidissement (5) comprend plusieurs groupes de refroidissement (K1 - Kn) et dans laquelle un groupe de refroidissement (K1, K2, K3) est disposé respectivement dans la direction de transport (F) derrière la dernière cage de laminoir (F5) traversée avant l'entrée dans la section de refroidissement (5) et derrière chaque cage de laminoir (F6, F7) traversée à la suite de celle-ci, caractérisée en ce que le premier groupe de refroidissement (K1) de la section de refroidissement (5) dans la direction de transport (F) est disposé entre la cinquième cage de laminoir (F5) et la sixième cage de laminoir (F6) et le deuxième groupe de refroidissement (K2) de la section de refroidissement (5) est disposé entre la sixième cage de laminoir (F6) et la septième cage de laminoir (F7) du train de laminage (2).
  2. Installation selon la revendication 1, caractérisé en ce qu'au moins les groupes de refroidissement (K1 - K3) disposés à l'intérieur du train de laminage (2) sont formés par des groupes de refroidissement compacts.
  3. Installation selon la revendication 2, caractérisée en ce que la longueur mesurée dans la direction de transport (F) du feuillard d'acier à laminer à chaud (S), sur laquelle le groupe de refroidissement (K1, K2, K3) disposé respectivement derrière une cage de laminoir (F5, F6, F7) soumet respectivement le feuillard d'acier au fluide de refroidissement, vaut au maximum 25 % de la distance respective (A), à laquelle les cages de laminoir (F1 - F7) du train de laminage (2) disposées respectivement à proximité l'une de l'autre sont installées à la suite l'une de l'autre dans la direction de transport (F).
  4. Installation selon la revendication 3, caractérisée en ce que derrière, dans la direction de transport (F), au moins un des groupes de refroidissement (K1, K2) disposés entre deux cages de laminoir (F5, F6; F6, F7) disposées à proximité l'une de l'autre ou derrière, dans la direction de transport (F), le groupe de refroidissement (K3) disposé après la dernière cage de laminoir (F7) est disposé un dispositif de projection (8), qui dirige un jet de liquide (Q) sur le feuillard d'acier (S), afin de chasser du feuillard d'acier (S) le fluide de refroidissement présent sur le feuillard d'acier (8) avant l'entrée dans la cage de laminoir (F6, F7) traversée à la suite.
  5. Installation selon l'une quelconque des revendications précédentes, caractérisée en ce que les groupes de refroidissement (K4 - Kn) disposés à l'extérieur du train de laminage (2) sont formés par des groupes de refroidissement intensif.
  6. Installation selon l'une quelconque des revendications 2 à 5, caractérisée en ce que les groupes de refroidissement (K1 - Kn) de la section de refroidissement (5) peuvent être réglés séparément les uns des autres.
  7. Installation selon l'une quelconque des revendications précédentes, caractérisée en ce que la section de refroidissement (5) présente un débit de fluide de refroidissement d'au moins 1000 m3/h au total.
  8. Procédé pour laminer à chaud du feuillard d'acier destiné à la fabrication de tubes à paroi épaisse, caractérisé en ce qu'on le met en oeuvre sur une installation (1) configurée selon l'une quelconque des revendications 1 à 7 et en ce que, pendant le laminage à chaud dans la dernière cage de laminoir (F6, F7) vue dans la direction de transport (F), on ouvre l'emprise de laminage (A6, A7) à un point tel qu'à partir de cette cage de laminoir (F6, F7) il ne se produise plus aucune déformation du feuillard d'acier (S) dans le train de laminage à chaud (2), et que le feuillard d'acier (S) soit refroidi de façon accélérée, à la suite de la sortie de la cage de laminoir (F5, F6) traversée avant chaque première cage de laminoir ouverte (F6, F7), par exposition à un fluide de refroidissement avec une vitesse de refroidissement d'au moins 80 K/s.
  9. Procédé selon la revendication 8, caractérisé en ce que l'épaisseur finale (D) du feuillard d'acier (S) à la sortie du train de laminage à chaud (2) vaut au moins 15 mm.
  10. Procédé selon une des revendications 8 ou 9, caractérisé en ce que la vitesse finale de laminage à chaud vaut moins de 3 m/s.
  11. Procédé selon l'une quelconque des revendications 8 à 10, caractérisé en ce que la température initiale de laminage à chaud du feuillard d'acier (S) vaut plus de 800°C et moins de 1050°C.
  12. Procédé selon l'une quelconque des revendications 8 à 11, caractérisé en ce que la température de sortie, à laquelle le feuillard d'acier (S) entre dans la section de refroidissement (5) lorsqu'il quitte la dernière cage de laminoir (F5) par laquelle il est déformé à chaud, se situe entre 740°C et 900°C.
  13. Procédé selon l'une quelconque des revendications 8 à 12, caractérisé en ce que l'on interrompt le refroidissement du feuillard d'acier (S) à une température d'arrêt de refroidissement, qui se situe entre 500°C et 700°C.
  14. Procédé selon la revendication 13, caractérisé en ce que l'on maintient le feuillard d'acier (2) pendant 2 à 12 secondes à la température respective lorsque l'on atteint la température d'arrêt de refroidissement.
  15. Procédé selon l'une quelconque des revendications 8 à 14, caractérisé en ce que l'on bobine le feuillard d'acier (S) à une température de bobinage, qui se situe entre 450°C et 650°C.
  16. Procédé selon l'une quelconque des revendications 8 à 15, caractérisé en ce que l'épaisseur (D) du feuillard d'acier (S) à son entrée dans le train de laminage à chaud vaut 50 - 100 mm et elle vaut >15 - 25,5 mm lorsqu'il quitte le train de laminage à chaud.
  17. Procédé selon l'une quelconque des revendications 8 à 16, caractérisé en ce que le feuillard d'acier (S) est fabriqué en un acier qui, en plus du fer et des impuretés inévitables, se compose (en % en poids) de: C: ≤ 0,18 %, Si: ≤ 1,5 %, Mn: ≤ 2,5 %, P: 0,005 - 0,1 %, S: ≤ 0,03 %, N: ≤ 0,02 %, Cr: ≤ 0,5 %, Cu: ≤ 0,5 %, Ni: ≤ 0,5 %, Mo: ≤ 0,5 %, Al: ≤ 2 %, et jusqu'à 0,3 % au total d'un ou de plusieurs des éléments B, Nb, Ti, V, Zr, Ca.
EP14736716.3A 2013-07-03 2014-07-01 Installation et procédé pour laminer à chaud des feuillards d'acier Active EP3016754B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14736716T PL3016754T3 (pl) 2013-07-03 2014-07-01 Urządzenie i sposób walcowania na gorąco taśmy stalowej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013107010.8A DE102013107010A1 (de) 2013-07-03 2013-07-03 Anlage und Verfahren zum Warmwalzen von Stahlband
PCT/EP2014/063955 WO2015000895A1 (fr) 2013-07-03 2014-07-01 Installation et procédé pour laminer à chaud des feuillards d'acier

Publications (2)

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EP3016754A1 EP3016754A1 (fr) 2016-05-11
EP3016754B1 true EP3016754B1 (fr) 2019-09-04

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Country Link
US (1) US10335840B2 (fr)
EP (1) EP3016754B1 (fr)
JP (1) JP6450379B2 (fr)
KR (1) KR102212807B1 (fr)
CN (1) CN105392574B (fr)
CA (1) CA2914540C (fr)
DE (1) DE102013107010A1 (fr)
ES (1) ES2756453T3 (fr)
MX (1) MX364428B (fr)
PL (1) PL3016754T3 (fr)
WO (1) WO2015000895A1 (fr)

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CN105392574B (zh) 2019-01-18
WO2015000895A1 (fr) 2015-01-08
ES2756453T3 (es) 2020-04-27
DE102013107010A1 (de) 2015-01-22
US20160151814A1 (en) 2016-06-02
CN105392574A (zh) 2016-03-09
US10335840B2 (en) 2019-07-02
CA2914540A1 (fr) 2015-01-08
MX364428B (es) 2019-04-25
JP6450379B2 (ja) 2019-01-09
KR102212807B1 (ko) 2021-02-05
JP2016530099A (ja) 2016-09-29
KR20160030218A (ko) 2016-03-16
CA2914540C (fr) 2018-01-16
EP3016754A1 (fr) 2016-05-11

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