EP3713685B1 - Barre de refroidissement et processus de refroidissement avec taux de refroidissement variable pour tôles d'acier - Google Patents

Barre de refroidissement et processus de refroidissement avec taux de refroidissement variable pour tôles d'acier Download PDF

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Publication number
EP3713685B1
EP3713685B1 EP18796035.6A EP18796035A EP3713685B1 EP 3713685 B1 EP3713685 B1 EP 3713685B1 EP 18796035 A EP18796035 A EP 18796035A EP 3713685 B1 EP3713685 B1 EP 3713685B1
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EP
European Patent Office
Prior art keywords
cooling
full
nozzles
cone
cooling rate
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EP18796035.6A
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German (de)
English (en)
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EP3713685A1 (fr
Inventor
Frederik Grosse Lordemann
Dirk Schmidt
Roman Dehmel
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SMS Group GmbH
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SMS Group GmbH
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Classifications

    • 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
    • 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
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • 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
    • 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
    • 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
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for cooling
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature
    • B21B2261/21—Temperature profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/22—Hardness
    • 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
    • B21B37/76—Cooling control on the run-out table
    • 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
    • B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
    • 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
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips

Definitions

  • the present invention relates to a cooling device with a variable cooling rate in heavy plate rolling mills, hot strip mills or heat treatment lines for the treatment of metallic materials.
  • a generic cooling device is, for example, from WO 2015/113832 A1 known.
  • the invention also relates to a cooling process with such a cooling device.
  • the final quality of rolled sheets is largely determined by the first forming steps and appropriate cooling. Defects that already occurred in the early stages of sheet metal production can only be remedied with difficulty or not at all in the subsequent lines and thus have a serious negative impact on the quality of the end product.
  • the temperature deformation path that the rolling stock goes through has a decisive influence on the mechanical properties of the rolling stock at the end of the rolling process. This means that the mechanical properties of the rolling intermediate product or end product are dependent on the temperatures at which the rolling stock was rolled during the respective rolling pass.
  • thermomechanical rolling of rolling stock the rolling process takes place in such a way that the rolling stock is only rolled within certain permissible temperature windows. This means that rolling passes and targeted cooling phases must alternate.
  • Hardening and subsequent tempering of steel components in heat treatment lines is also common practice. This achieves that a desired Combination of strength and toughness of the material can be adjusted in a targeted manner.
  • this technology is also used in the production of high-strength steel sheets in sheet metal systems, as is the case, for example, in the EP 1 764423 A1 is revealed.
  • the sheet is cooled in several reversing passes at high speed, for example down to room temperature, ie the hardening process is carried out.
  • the tempering process ie reheating of the strip to 600 ° C., for example, followed by renewed cooling. This allows sheets with different properties to be produced flexibly in small batches.
  • high and low cooling rates of the rolling stock can be set in a hot strip mill or in a heavy plate mill.
  • Cooling devices are known in which high cooling rates can be achieved with water nozzle cooling and low cooling rates using air fan cooling (forced convection).
  • the cooling device in order to achieve both a low and a very high cooling rate, taking into account maximum uniformity of the cooling transversely to the sheet metal running direction, it is proposed that the cooling device consists of at least two cooling bars, each transversely on both the underside and the top are arranged to the sheet running direction and centrally between two roller table rollers and comprises a spray nozzle cooling, each of which is assigned a plurality of full jet nozzles and a plurality of full cone nozzles, wherein the full jet nozzles are arranged symmetrically to the full cone nozzles.
  • cooling systems can advantageously be combined into one structural unit in one cooling beam.
  • the individual chilled beams can be made very compact and space-saving.
  • a retrofitting of an already existing rolling mill with sheet metal cooling can easily be carried out, since the cooling can be installed according to the invention between two roller tables without the need for any major adjustment work on the roller tables.
  • nozzle should not necessarily be limited to full jet or full cone nozzles.
  • Other types of spray nozzles or forms of application are also conceivable, such as hollow cone nozzles, flat jet nozzles, U-tubes, etc., which can also be combined in the cooling beams can be installed.
  • a cooling medium can be applied to the full jet nozzles in such a way that the sheet to be rolled can be cooled at a high cooling rate of 5 to 150 K / s, preferably 50 K / s. It is also provided that a cooling medium can be applied to the full cone nozzles in such a way that the sheet to be rolled can thereby be cooled at a low cooling rate of below 1 K / s to 19 K / s.
  • both the full cone nozzles and the full jet nozzles in the cooling beam can be acted upon and operated with the coolant at the same time or at different times and independently of one another.
  • the coolant quantity and the coolant surge pressure for each spray nozzle in the cooling beam are regulated individually and online.
  • the sheet to be rolled is cooled by spray cooling with a coolant, the cooling rate and / or the required final temperature being regulated by the amount of liquid and / or the number of full jet nozzles and cone nozzles (spray nozzles) that are switched on.
  • the sheet to be rolled is depending on the desired quality with a subsequently set cooling rate by means of a cooling medium that is passed into two cooling bars, which are each arranged both on the underside and on the top of the sheet and transversely to the sheet running direction and in the middle between at least two roller table rollers, and the cooling medium is cooled sprayed onto the sheet metal to be cooled via a multiplicity of full jet nozzles and full cone nozzles assigned to the cooling bars, the full jet nozzles being arranged symmetrically to the full cone nozzles in the cooling bars.
  • the coolant quantity and the coolant surge pressure for each spray nozzle (full jet nozzle and full cone nozzle) in the cooling beam should be individually regulated online.
  • at least one control parameter is measured for this purpose, wherein the control parameter can be the final temperature of the rolled sheet.
  • Process sensors provide information about the sheet temperature and the actual flatness; these are collected in front of and behind the cooling device and the actual values are compared with target values. From this value information, a model computer calculates online the type of cooling required for cooling, the cooling duration and the required amount of coolant depending on the desired material quality of the strip.
  • the determined control parameter (obtained / determined by the process sensors) can furthermore be combined with information about the dimensions and the material quality and / or with the target properties such as hardness and strength of the sheet to be rolled.
  • the device 10 consists essentially of two opposing cooling beams 16, 16a and 17, 17a arranged between two roller table rollers 12, 13, 14.
  • the cooling beams 16, 16a and 17, 17a are designed in a very compact design.
  • basically two cooling systems 16 and 17 as well as 17a and 17a have been combined to form a cooling unit 18 and 18a.
  • cooling units 18, 18a can be networked with one another and operated in a synchronized manner.
  • the cooling bars 16, 16a are assigned to the upper side of the sheet metal and the cooling bars 17, 17a are assigned to the lower side of the sheet metal.
  • FIG. 2 shows an enlarged illustration of the lower cooling bar 17 according to FIG. 1, the cooling bars 16, 16a and 17a being constructed in the same way.
  • the compact design is based on the fact that at least two types of nozzles, here full jet nozzles 19 and full cone nozzles 20 are arranged and integrated in a special way in the cooling beams 16, 16a and 17, 17a.
  • Nozzle cooling is installed, preferably with full jet nozzles 19, 19a for a high cooling rate and nozzle cooling, preferably with full cone nozzles 20 for low cooling rates (gentle cooling), via which a cooling medium 29 can be specifically released onto sheet metal 22.
  • the full cone nozzles 20 are in the middle and the full jet nozzles 19, 19a are spaced apart from this and are arranged parallel to the full cone nozzles 20 in the cooling beam 16, 16a and 17, 17a.
  • the nozzle cooling is preferably arranged in the cooling beam 16, 16a and 17, 17a transversely to the sheet running direction 20 and over the entire width of a sheet 22 to be rolled.
  • the Figure 3 is a graphic representation for controlling sheet metal cooling with the cooling system 16, 16a and 17, 17a according to the invention Fig. 2 .
  • advance information such as sheet metal primary data 23, target sheet metal properties 24 and actual sheet metal properties 25 can be made available to a cooling model 26 to regulate the cooling. These basic data are used to control the cooling device 28.
  • the cooling model 26 is regulated via the values detected by sensors 27, 27a.
  • the actual properties of the metal sheet 22 can be compared with the target properties after the cooling of the metal sheet 22 before cooling. If the target properties are not achieved, this information is transmitted to the cooling model and the cooling device is readjusted accordingly, as shown in Figure 4 is shown.
  • the cooling device can be used with maximum flexibility.
  • the manual interventions of the operating personnel are reduced to a minimum by the automatic control by the model computer.
  • the cooling model 26 interacts permanently and quasi online with the cooling device 28. A cooling model is therefore possible for each section of the machine. Volume flows and the actual data are also permanently compared and, if necessary, readjusted.
  • the control concept enables, for example, a heavy plate mill, a hot strip mill or a heat treatment line to be operated with maximum flexibility. This means that the desired cooling rate can be freely set at any time and over the entire length of the machine.
  • the model computer (not shown) controlling the cooling model 26 independently decides which cooling application (cooling rate) is necessary and most economical for the material properties to be achieved.

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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)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Metal Rolling (AREA)

Claims (14)

  1. Mécanisme de refroidissement (28) du type à vitesse de refroidissement variable destiné au traitement de matériaux à base d'acier, en particulier destiné au refroidissement de tôles d'acier (22) dans des laminoirs pour la production de tôles épaisses, dans des trains à bandes à chaud ou dans des lignes de traitement thermique au moyen d'un refroidissement par l'intermédiaire de buses de pulvérisation, qui comprend des rouleaux de trains de rouleaux ; dans lequel le mécanisme de refroidissement est constitué par au moins deux traverses de refroidissement (16, 17, 16a, 17a) qui sont disposées de manière respective aussi bien sur le côté inférieur que sur le côté supérieur en direction transversale par rapport à la direction de défilement (21) de la tôle (22) et en position centrale entre deux rouleaux de trains de rouleaux (12, 13, 14), et comprend un refroidissement par l'intermédiaire de buses de pulvérisation, caractérisé en ce que, de manière respective, une multitude de buses du type à jet plein (19, 19a) et une multitude de buses du type à cône plein (20) sont attribuées au refroidissement par l'intermédiaire de buses de pulvérisation ; dans lequel les buses du type à jet plein (19, 19a) sont disposées en position symétrique par rapport aux buses du type à cône plein (20).
  2. Utilisation d'un mécanisme de refroidissement du type à vitesse de refroidissement variable selon la revendication 1, caractérisée en ce que les buses du type à jet plein (19, 19a) peuvent être sollicitées avec un agent de refroidissement (29) d'une manière telle que la tôle (22) qui doit être soumise à un laminage peut être refroidie de cette manière avec une vitesse de refroidissement élevée de 5 à 150 K/s, de préférence de 50 K/s.
  3. Utilisation d'un mécanisme de refroidissement du type à vitesse de refroidissement variable selon la revendication 1, caractérisée en ce que les buses du type à cône plein (20) peuvent être sollicitées avec un agent de refroidissement (29) d'une manière telle que la tôle (22) qui doit être soumise à un laminage peut être refroidie de cette manière avec une petite vitesse de refroidissement allant de 1 K/s à 19 K/s.
  4. Mécanisme de refroidissement du type à vitesse de refroidissement variable selon la revendication 1, caractérisé en ce que non seulement, on peut combiner des buses du type à jet plein et des buses du type à cône plein, mais encore on peut incorporer n'importe quel type de buses connues, respectivement n'importe quelle forme de sollicitation connue, telles que des buses du type à jet laminaire, des buses du type à cône creux ainsi que des tubes en U dans les traverses de refroidissement (16, 17, 16a, 17a).
  5. Mécanisme de refroidissement du type à vitesse de refroidissement variable selon la revendication 1 ou 4, caractérisé en ce que, au sein d'une traverse de refroidissement (16, 17, 16a, 17a), on peut procéder, dans l'orientation qui convient et sans à-coups, à une commutation entre une vitesse de refroidissement élevée au moyen de buses du type à jet plein (19, 19a) et une petite vitesse refroidissement au moyen de buses du type à cône plein (20) et vice versa, d'une manière telle que l'on peut régler de cette façon un chevauchement ininterrompu de vitesses de refroidissement.
  6. Mécanisme de refroidissement du type à vitesse de refroidissement variable selon la revendication 5, caractérisé en ce que, au sein de la traverse de refroidissement (16, 17, 16a, 17a), on peut solliciter avec un agent de refroidissement et on peut entraîner aussi bien les buses du type à cône plein (20) que les buses du type à jet plein (19, 19a) de manière simultanée ou de manière décalée dans le temps et indépendamment les unes des autres.
  7. Mécanisme de refroidissement du type à vitesse de refroidissement variable selon la revendication 6, caractérisé en ce que l'on peut régler la quantité de l'agent de refroidissement et la pression d'impact de l'agent de refroidissement pour chaque buse du type à jet plein (19, 19a) et pour chaque buse du type à cône plein (20) dans la traverse de refroidissement (16, 17, 16a, 17a), de manière individuelle et en ligne.
  8. Mécanisme de refroidissement du type à vitesse de refroidissement variable selon la revendication 7, caractérisé en ce que le refroidissement qui est destiné à la tôle (22) qui doit être soumise à un laminage a lieu par l'intermédiaire d'un refroidissement par pulvérisation avec l'agent de refroidissement (29) ; dans lequel on peut régler la vitesse de refroidissement et/ou la température finale respectivement requise par l'intermédiaire de la quantité de liquide et/ou par l'intermédiaire du nombre des buses du type à jet plein (19, 19a) et des buses du type à cône plein (20) (buses de pulvérisation) qui sont respectivement mises en circuit.
  9. Procédé destiné à l'exploitation du mécanisme de refroidissement selon les revendications 1 ou 4 à 8, caractérisé en ce que l'on soumet à un refroidissement la tôle qui doit être soumise à un laminage, en fonction de la qualité que l'on souhaite obtenir, avec une vitesse de refroidissement qui est réglée en prenant en compte cette dernière, au moyen d'un agent de refroidissement qui est guidé dans deux traverses de refroidissement qui sont disposées, de manière respective, aussi bien sur le côté inférieur que sur le côté supérieur de la tôle et en direction transversale par rapport à la direction de défilement de la tôle et en position centrale entre au moins deux rouleaux de trains de rouleaux, et l'agent de refroidissement est pulvérisé en l'occurrence, par l'intermédiaire d'une multitude, attribuée aux traverses de refroidissement, de buses du type à jet plein et de buses du type à cône plein, ou de buses du type à jet laminaire et de buses du type à cône creux ou de tubes en U, sur la tôle qui doit être soumise à un refroidissement ; dans lequel, dans les traverses de refroidissement, les buses du type à jet plein ou les buses du type à jet laminaire sont disposées en position symétrique par rapport aux buses du type à cône plein ou aux buses du type à cône creux ou aux tubes en U.
  10. Procédé selon la revendication 9, caractérisé en ce que, au sein d'une traverse de refroidissement, on peut procéder, dans l'orientation qui convient et sans à-coups, à une commutation entre une vitesse de refroidissement élevée au moyen de buses du type à jet plein et une petite vitesse refroidissement au moyen de buses du type à cône plein et vice versa, ou bien on peut combiner les buses du type à jet plein et les buses du type à cône plein les unes avec les autres et régler de cette façon un chevauchement ininterrompu de vitesses de refroidissement.
  11. Procédé selon la revendication 10, caractérisé en ce que l'on peut régler la quantité de l'agent de refroidissement et la pression d'impact de l'agent de refroidissement pour chaque buse du type à jet plein (19, 19a) et pour chaque buse du type à cône plein (20) dans la traverse de refroidissement, de manière individuelle et en ligne.
  12. Procédé selon la revendication 11, caractérisé en ce que, pour le réglage de la vitesse de refroidissement, on mesure au moins un paramètre de réglage ; dans lequel le paramètre de réglage représente la propriété mécanique telle que la dureté ou un paramètre de la microstructure, tel que la répartition des phases et la granulométrie dans la tôle.
  13. Procédé selon la revendication 12, caractérisé en ce que le paramètre de réglage est en outre combiné avec des informations qui concernent la dimension et la qualité de la matière et/ou avec les propriétés de consigne telles que la dureté et la résistance de la bande qui doit être soumise à un laminage.
  14. Procédé selon la revendication 13, caractérisé en ce que des capteurs du processus rassemblent des informations au sujet de la température de la bande, de la planéité réelle avant et après le mécanisme de refroidissement et comparent les valeurs réelles à des valeurs de consigne, d'une manière telle que, à partir de ces informations concernant des valeurs, un ordinateur modèle calcule en ligne le type de refroidissement, la durée de refroidissement et la quantité de l'agent de refroidissement qui sont requis pour le refroidissement, en fonction de la qualité de la matière de la bande que l'on souhaite obtenir.
EP18796035.6A 2017-11-21 2018-10-31 Barre de refroidissement et processus de refroidissement avec taux de refroidissement variable pour tôles d'acier Active EP3713685B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017127470.7A DE102017127470A1 (de) 2017-11-21 2017-11-21 Kühlbalken und Kühlprozess mit variabler Abkühlrate für Stahlbleche
PCT/EP2018/079856 WO2019101486A1 (fr) 2017-11-21 2018-10-31 Barre de refroidissement et processus de refroidissement avec taux de refroidissement variable pour tôles d'acier

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EP3713685A1 EP3713685A1 (fr) 2020-09-30
EP3713685B1 true EP3713685B1 (fr) 2021-05-26

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EP18796035.6A Active EP3713685B1 (fr) 2017-11-21 2018-10-31 Barre de refroidissement et processus de refroidissement avec taux de refroidissement variable pour tôles d'acier

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Country Link
US (1) US11484926B2 (fr)
EP (1) EP3713685B1 (fr)
JP (1) JP6960056B2 (fr)
CN (1) CN111386159A (fr)
DE (1) DE102017127470A1 (fr)
RU (1) RU2744406C1 (fr)
WO (1) WO2019101486A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP3808466A1 (fr) * 2019-10-16 2021-04-21 Primetals Technologies Germany GmbH Dispositif de refroidissement à rayonnement de refroidissement pourvu de section transversale creuse
DE102022128358A1 (de) * 2022-10-26 2024-05-02 Sms Group Gmbh Kühlmodul, Kühlgruppe, Kühlsystem, Verfahren, warmgewalztes metallisches bandförmiges Produkt und Verwendung

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RU2744406C1 (ru) 2021-03-09
US11484926B2 (en) 2022-11-01
DE102017127470A1 (de) 2019-05-23
WO2019101486A1 (fr) 2019-05-31
EP3713685A1 (fr) 2020-09-30
JP2021502899A (ja) 2021-02-04
JP6960056B2 (ja) 2021-11-05
CN111386159A (zh) 2020-07-07

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