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WO2025093187A1 - Appareil et procédé de production d'une bande métallique laminée à chaud - Google Patents

Appareil et procédé de production d'une bande métallique laminée à chaud Download PDF

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Publication number
WO2025093187A1
WO2025093187A1 PCT/EP2024/076306 EP2024076306W WO2025093187A1 WO 2025093187 A1 WO2025093187 A1 WO 2025093187A1 EP 2024076306 W EP2024076306 W EP 2024076306W WO 2025093187 A1 WO2025093187 A1 WO 2025093187A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal strip
coolant
cooling device
rapid cooling
nozzles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/076306
Other languages
German (de)
English (en)
Inventor
August Sprock
Andreas Kastner
Christoph Hassel
Ulrich Cramer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of WO2025093187A1 publication Critical patent/WO2025093187A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2201/00—Special rolling modes
    • B21B2201/06—Thermomechanical rolling
    • 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
    • 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
    • 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

Definitions

  • the invention relates to an apparatus and a method for producing a hot-rolled metal strip, comprising a finishing train for hot-rolling the metal strip and a cooling device for cooling the metal strip downstream of the finishing train.
  • a general optimization goal for rolling a metal strip in a rolling mill, especially a hot strip mill, is to optimize the strength and toughness properties of the material and to avoid distortion.
  • the cooling of the hot-rolled products following forming can be specifically influenced.
  • fine grain hardening has a positive effect on the strength and toughness properties of the material.
  • Hall-Petch and Cottrell-Petch relationships a decrease in the fine grain size in the material's microstructure results in an increase in strength and toughness.
  • a decrease in the ferrite grain diameter leads to an increase in yield strength and tensile strength; see also WO 2014/177664 A1.
  • An object of the invention is to provide an improved apparatus and an improved method for producing a hot-rolled metal strip, in particular to improve the mechanical properties of the metal strip.
  • the device is used for hot rolling a metal strip, for example, with a final rolling temperature of approximately 850 °C.
  • the device is particularly used in hot rolling mills, including CSP plants or heavy plate rolling mills.
  • the rolled stock to be processed is a metal strip, preferably a steel strip, which, as a general term, includes flat rolled products such as sheets of various qualities.
  • the device comprises a finishing train with at least one rolling stand, which conventionally comprises work rolls forming a roll gap, for hot rolling the metal strip.
  • the metal strip is transported in a conveying direction during rolling and leaves the last rolling stand in the conveying direction.
  • the device further comprises a rapid cooling device, which is arranged immediately behind the roll gap of the last rolling stand of the finishing train and is designed to rapidly cool the metal strip by applying a coolant to the top and bottom of the metal strip along a cooling section of the rapid cooling device.
  • the coolant is preferably water or a water-based liquid coolant.
  • the rapid cooling device can be arranged so that the cooling of the metal strip takes place at least partially within the extension of the last rolling stand in the conveying direction.
  • the rapid cooling device is designed to apply a coolant quantity of between 100 and 300 m 3 /(m 2 *h) to both the top and the bottom of the metal strip.
  • the rapid cooling device can have spray bars on the top and bottom sides, relative to the metal strip, each with a plurality of nozzles for spraying the coolant onto the metal strip.
  • the number of nozzles is preferably 50 to 120 nozzles/ m2 on the top side of the metal strip and preferably 80 to 150 nozzles/ m2 on the bottom side.
  • the upper nozzles are preferably arranged a maximum of 800 mm above the metal strip, and the lower nozzles are preferably arranged a maximum of 170 mm below the metal strip.
  • the diameter of the nozzles is preferably in the range of 3 to 8 mm.
  • the coolant pre-pressure is preferably in the range of 2 to 5 bar.
  • the rapid cooling device has a coolant supply and one or more coolant supply lines, which are in fluid communication with the spray booms, to supply the nozzles with the Coolant under the specified pressure, which can be achieved, for example, by means of a correspondingly high tank or standpipe or by means of booster pumps.
  • strip measuring devices can be installed directly upstream and/or downstream of the rapid cooling device, but coolant leakage should be avoided to prevent falsifying the measurement results.
  • one or more end-side spray bars in the front and rear areas are preferably arranged so that the spray direction of the coolant from the corresponding nozzles is directed obliquely toward the metal strip, into the interior of the rapid cooling device.
  • the end-side spray bars and/or their nozzles can be angled relative to the conveying direction of the metal strip.
  • a squeeze roller and/or an air blow-off device can be installed at the inlet and/or outlet of the rapid cooling system. Such measures are particularly useful on the upper side of the metal strip, where coolant can collect without dripping downward.
  • the rapid cooling device is designed to set cooling rates for which the following applies: cooling rate * strip thickness > 500 K/s * mm, whereby a particularly rapid cooling of the metal strip is achieved.
  • the length Li of the cooling section of the rapid cooling device is at least 4 m and/or a maximum of 10 m, in particular approximately 9 m, whereby the rapid cooling takes place within a comparatively short cooling section.
  • the coolant quantities on the top and bottom sides of the metal strip can be set in a specific ratio. Good flatness is achieved when more coolant is applied to the underside of the metal strip than to the top.
  • the coolant quantity ratio from top to bottom can be adjusted using a flow control, preferably separately on the top and bottom of the metal strip, in order to specifically prevent tension in the strip.
  • the coolant quantity ratio from top to bottom can preferably be adjusted in the range of at least 3:1 to 1:3. A coolant quantity ratio between top and bottom of 1:2 is optimal.
  • the rapid cooling device is configured to apply a total coolant quantity of at least 800 m 3 /h per meter of strip width to the top and bottom sides of the metal strip, more preferably at least 1500 m 3 /h, particularly preferably at least 2400 m 3 /h.
  • the device comprises a further cooling device downstream of the rapid cooling device, which is configured to adjust the metal strip to the desired final temperature, preferably a suitable coiling temperature.
  • the further cooling device is preferably designed for laminar cooling.
  • a method for producing a hot-rolled metal strip comprising: hot rolling a metal strip in a finishing train having at least one rolling stand, which having work rolls forming a roll gap; and immediate cooling of the metal strip following hot rolling by applying a coolant, preferably water-based, to the top and bottom sides of the metal strip along a cooling section of the rapid cooling device, wherein the rapid cooling device is arranged immediately behind the roll gap of the last rolling stand of the finishing train; wherein the rapid cooling device applies a coolant quantity of between 100 and 300 m 3 /(m 2 *h) to both the top and bottom sides of the metal strip.
  • a coolant preferably water-based
  • the rapid cooling device preferably comprises, on the top and bottom sides, relative to the metal strip, spray bars each having a plurality of nozzles for spraying the coolant onto the metal strip, a coolant supply and one or more coolant feed lines which are in fluid communication with the spray bars for supplying the nozzles with the coolant, wherein the coolant supply preferably sets the pre-pressure of the coolant in the coolant feed lines to a pressure of 2 to 5 bar.
  • the rapid cooling device preferably has one or more end-side spray bars in the front and/or rear region of the rapid cooling device, the nozzles of which apply the coolant to the metal strip at an angle that is directed obliquely into the interior of the rapid cooling device.
  • a cooling rate is preferably set in the rapid cooling device for which the following applies: cooling rate * strip thickness > 500 K/s * mm.
  • cooling rate * strip thickness > 500 K/s * mm.
  • the underside of the metal strip in the rapid cooling device is preferably exposed to at least twice as much coolant as the top side of the metal strip.
  • a total coolant quantity of at least 800 m 3 /h per meter of strip width is preferably applied to the top and bottom sides of the metal strip in the rapid cooling device, more preferably at least 1500 m 3 /h, particularly preferably at least 2400 m 3 /h.
  • Figure 1 shows schematically an apparatus for producing a metal strip, comprising a finishing train and a rapid cooling device
  • Figure 2 schematically shows the rapid cooling device according to an embodiment.
  • Figure 1 schematically shows a device 1 for producing a metal strip 2.
  • the device 1 is used in particular in hot rolling mills, including CSP plants or heavy plate rolling mills.
  • the rolled stock to be processed is a metal strip 2, preferably a steel strip, which, as a general term, includes flat rolled products such as sheets of various qualities.
  • the device 1 has a finishing train 10, the last rolling stand 11 of which is shown in Figure 1.
  • the metal strip 2 is hot-rolled in the finishing train 10 and leaves the last rolling stand 11 in a conveying direction F.
  • a rapid cooling device 20 designed to rapidly cool the metal strip 2 immediately after hot rolling.
  • the rapid cooling in the rapid cooling device 20 takes place within a comparatively short cooling section with a length Li of, for example, less than 10 m, preferably approximately 9 m, measured from the roll gap of the last rolling stand 11 of the finishing train 10.
  • a further cooling device 30 is arranged, which is designed to adjust the metal strip 2 to the desired final temperature, for example to a suitable coiling temperature.
  • the further cooling device 30 can be designed for laminar cooling, in which the coolant, in particular cooling water, is supplied with a comparatively low Line pressure (for example, between 0.05 and 0.1 bar) is applied to the rolled stock.
  • the cooling device 30 has a plurality of spray beams 31, which apply the coolant to the metal strip 2 from above or both from above and below, preferably in a uniform, curtain-like laminar flow.
  • the additional cooling device 30 can be divided into several segments or sections, for example, ten segments according to the present embodiment.
  • the distance L2 of the additional cooling device 30 from the roll gap of the last rolling stand 11 of the finishing train 10, measured at the beginning of the cooling device 30, is preferably less than 20 m, in particular approximately 14 m.
  • a reeling device 40 for winding the finished metal strip 2 is installed downstream of the further cooling device 30 downstream of the further cooling device 30.
  • One or more temperature gauges 50, 60 can be installed on the treatment line for the metal strip 2, for example between the rapid cooling device 20 and the further cooling device 30 and downstream of the further cooling device 30, in order to measure the temperature(s) at the corresponding locations for monitoring the process progress.
  • the rapid cooling device 20 combines various properties that, individually but especially in combination, enable the microstructure to be "frozen” after the final forming step in the finishing train 10, preventing grain growth and recrystallization.
  • an extremely small ferrite grain is achieved, preferably smaller than 5 pm. According to the Hall-Petch and Cottrell-Petch relationships, this results in an increase in the strength and toughness of the metal strip 2.
  • the applied deformation in the rolling stands before rapid cooling is preferably between 10 and 50%. Cooling in the rapid cooling device 20 is carried out in such a way that, if possible, only an austenite-to-ferrite transformation occurs.
  • the rapid cooling device 20 is preferably configured so that the temperature after rapid cooling is approximately 700°C. In a subsequent cooling in the additional cooling device 30, which is connected to the rapid cooling device 20, the desired final temperature or coiling temperature can be set.
  • Materials whose mechanical properties are particularly improved by this instant cooling preferably have a ferritic microstructure.
  • the chemical analysis of such materials preferably lies in the following ranges:
  • Table 1 Example chemical analysis of a ferritic microstructure for metal strip 2.
  • the rapid cooling device 20 is configured to apply a sufficiently high quantity of coolant compactly to the metal strip 2.
  • the application rate on the top and bottom sides is between 100 and 300 m 3 /(m 2 *h).
  • the rapid cooling device 20 has on the top and bottom sides (relative to the metal strip 2) spray bars 21 each with a plurality of nozzles 22, which are supplied with a coolant via a coolant supply 23 and one or more coolant supply lines 24.
  • the coolant is preferably water or a liquid water-based coolant.
  • the coolant pre-pressure in the coolant supply lines 24 is preferably in the range of 2 to 5 bar, which can be achieved, for example, with the aid of a correspondingly high tank or standpipe or with the aid of one or more booster pumps in the coolant supply 23.
  • the number of nozzles 22 is preferably 50 to 120 nozzles/m 2 on the upper side and preferably 80 to 150 nozzles/m 2 on the lower side.
  • the height of the upper spray bars 21 or nozzles 22 is preferably a maximum of 800 mm above the strip edge.
  • the lower nozzles 22 are preferably arranged a maximum of 170 mm below the strip edge.
  • the diameter of the nozzles 22 is preferably in the range of 3 to 8 mm.
  • coolant does not escape uncontrollably toward the last rolling stand 11 of the finishing train 10 or in the other direction, i.e., toward the further cooling device 30.
  • strip measuring devices can be installed directly upstream and/or downstream of the rapid cooling device 20, but coolant leakage should be avoided to avoid falsifying the measurement result.
  • one or more end-side spray bars 21' in the front and/or rear area are arranged such that the spray direction of the coolant from the corresponding nozzles 22' is directed obliquely into the interior of the rapid cooling device 20, see Figure 2.
  • the end-side spray bars 21' and/or their nozzles 22' can be inclined relative to the conveying direction F. Further measures can be taken to prevent uncontrolled coolant leakage from the rapid cooling device 20.
  • a coolant spray system with approximately 8 to 15 bar pre-pressure is installed with flat jet nozzles arranged in a row, preferably orthogonal to the conveying direction F.
  • At least one squeeze roller 25 can be provided at the outlet of the rapid cooling device 20.
  • An air blow-off device 26 can be installed immediately upstream of any measuring devices to completely clean the strip surface of coolant and steam. Typical air velocities at the nozzle outlet of the air blow-off device are preferably between 200 and 750 m/s.
  • the coolant supply 23 and/or coolant supply lines 24 may have a bypass circuit used to switch the coolant on and off very quickly. This makes it possible to set defined head and foot lengths very precisely.
  • the rapid cooling device 20 is configured to set cooling rates for which the following applies: cooling rate * strip thickness > 500 K/s * mm.
  • the length Li of the direct cooling in the rapid cooling device 20 is preferably at least 4 m.
  • the rapid cooling performed in this way must prevent any tension in the metal strip 2, which could result in edge waves and/or unevenness.
  • the coolant quantities on the top and bottom sides of the metal strip 2 should be set in a specific ratio. Good flatness is achieved when twice as much coolant is applied to the bottom side of the metal strip.
  • the total coolant quantity on the top and bottom sides of the metal strip 2 should be at least 800 m 3 /h per meter of strip width, preferably at least 1500 m 3 /h, particularly preferably at least 2400 m 3 /h.
  • the coolant quantity ratio from top to bottom is preferably adjustable separately on the top and bottom of the metal strip 2 by means of a flow control in order to specifically prevent tension in the strip.
  • the coolant quantity ratio from top to bottom is preferably adjustable at least in the range of 3:1 to 1:3.
  • a coolant quantity ratio from top to bottom of 1:2 is optimal.
  • the cooling in the rapid cooling device 20 should be flexible, allowing for setting lower cooling rates in addition to the highest cooling rates for other metal strips 2.
  • the spray bars 21 as a whole and/or individually are preferably equipped with flow meters and flow controls, for example in the form of control valves and/or pumps. This allows a reduction of the coolant quantity to at least 30% of the maximum flow rate, preferably 20%, particularly preferably 10%.
  • Temperature gauges 50, 60 in the form of pyrometers can only measure surface temperatures. During rapid cooling within the rapid cooling device 20, no measurement is possible in this way. Therefore, one or more measurements in the finishing train 10 and/or after the rapid cooling, for example, using temperature gauges 50, 60, are advisable.
  • a temperature measurement is preferably carried out directly before the last rolling stand 11 and/or in one of the previous rolling stands.
  • the temperature measurement at the entrance to the roll gap of the last rolling stand 11 is difficult due to the ambient conditions (roll cooling, inter-stand cooling, etc.).
  • a pyrometer should preferably have a compressed air nozzle installed at a pressure of approximately 3 to 8 bar at a height of 200 - 600 mm relative to the metal strip 2 to enable interference-free measurement. Nevertheless, the pyrometer should continue to measure at a wavelength that is insensitive to stray coolant, especially water, in order to exclude any influence of residual coolant as far as possible.
  • the temperature distribution of the metal strip 2 in the rapid cooling is known in order to be able to adjust the required coolant quantities in the rapid cooling device 20 as precisely as possible.
  • a cooling model is preferably used that calculates the temperature distribution of the metal strip 2 in the rolling stands of the finishing train 10 and the rapid cooling system, preferably using the Fourier heat equation, and preferably across the entire strip thickness, thus enabling precise adjustment of the target values. Any deviation between measurement and calculation can be corrected at a temperature measuring point. This allows the temperature in the roll gap and in the cooling section of the rapid cooling device 20 to be optimally adjusted.
  • the cooling model can take into account the target coiling temperature, which must be precisely maintained depending on the application.
  • the cooling model switches the necessary coolant quantities in the additional cooling device 30, which is located downstream of the rapid cooling system, to adjust the coiling temperature.
  • the coolant application via the spray bars 21, 2T of the rapid cooling device 20 is preferably variable across the width in order to be able to compensate for incoming temperature profiles and to achieve uniform temperatures and thus properties across the width of the metal strip 2 on the outlet side.
  • the final rolling temperature ie the temperature of the metal strip 2 upon entering the rapid cooling device 20, can be controlled by changing the speed in the finishing train 10.
  • the coiler temperature can be regulated by changing the coolant quantity, particularly in the additional cooling device 30.

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

Abstract

L'invention concerne un appareil (1) et un procédé de production d'une bande métallique laminée à chaud (2), l'appareil (1) comprenant : un train de finition (10), doté d'au moins un support de rouleaux (11), qui présente des rouleaux de travail formant un espace de rouleaux, pour laminer à chaud la bande métallique (2) ; et un dispositif de refroidissement rapide (20), qui est directement en aval de l'espace de rouleaux du dernier support de rouleaux (11) du train de finition (10) et est conçu pour refroidir la bande métallique (2) rapidement par application d'un fluide de refroidissement, de préférence un fluide de refroidissement à base d'eau, sur le côté supérieur et le côté inférieur de la bande métallique (2) le long d'une zone de refroidissement du dispositif de refroidissement rapide (20) ; le dispositif de refroidissement rapide (20) étant conçu pour appliquer un fluide de refroidissement à la fois sur le côté supérieur et sur le côté inférieur de la bande métallique (2) à une vitesse entre 100 et 300 m3/(m2*h).
PCT/EP2024/076306 2023-11-02 2024-09-19 Appareil et procédé de production d'une bande métallique laminée à chaud Pending WO2025093187A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023210877.1A DE102023210877A1 (de) 2023-11-02 2023-11-02 Vorrichtung und Verfahren zur Herstellung eines warmgewalzten Metallbands
DE102023210877.1 2023-11-02

Publications (1)

Publication Number Publication Date
WO2025093187A1 true WO2025093187A1 (fr) 2025-05-08

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PCT/EP2024/076306 Pending WO2025093187A1 (fr) 2023-11-02 2024-09-19 Appareil et procédé de production d'une bande métallique laminée à chaud

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Country Link
DE (1) DE102023210877A1 (fr)
WO (1) WO2025093187A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012043210A1 (fr) * 2010-09-28 2012-04-05 住友金属工業株式会社 Appareil de production de tôle d'acier laminée à chaud
WO2014041868A1 (fr) * 2012-09-12 2014-03-20 三菱日立製鉄機械株式会社 Collecteur de buse, dispositif de refroidissement, dispositif de production d'une feuille d'acier laminée à chaud et procédé de production d'une feuille d'acier laminée à chaud
WO2014177664A1 (fr) 2013-05-03 2014-11-06 Sms Siemag Ag Procédé de fabrication d'une bande métallique
DE102021212902A1 (de) * 2021-11-17 2023-05-17 Sms Group Gmbh Verfahren zum Herstellen eines Warmbandes aus einem Feinkornstahlwerkstoff

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012043210A1 (fr) * 2010-09-28 2012-04-05 住友金属工業株式会社 Appareil de production de tôle d'acier laminée à chaud
WO2014041868A1 (fr) * 2012-09-12 2014-03-20 三菱日立製鉄機械株式会社 Collecteur de buse, dispositif de refroidissement, dispositif de production d'une feuille d'acier laminée à chaud et procédé de production d'une feuille d'acier laminée à chaud
WO2014177664A1 (fr) 2013-05-03 2014-11-06 Sms Siemag Ag Procédé de fabrication d'une bande métallique
DE102021212902A1 (de) * 2021-11-17 2023-05-17 Sms Group Gmbh Verfahren zum Herstellen eines Warmbandes aus einem Feinkornstahlwerkstoff

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DE102023210877A1 (de) 2025-05-08

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