EP3774100B1 - Kühleinrichtung zum kühlen eines metallischen gutes sowie verfahren zu deren herstellung und betrieb - Google Patents

Kühleinrichtung zum kühlen eines metallischen gutes sowie verfahren zu deren herstellung und betrieb Download PDF

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Publication number
EP3774100B1
EP3774100B1 EP19715872.8A EP19715872A EP3774100B1 EP 3774100 B1 EP3774100 B1 EP 3774100B1 EP 19715872 A EP19715872 A EP 19715872A EP 3774100 B1 EP3774100 B1 EP 3774100B1
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EP
European Patent Office
Prior art keywords
cooling
coolant
cooling bar
application elements
temperature
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.)
Active
Application number
EP19715872.8A
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German (de)
English (en)
French (fr)
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EP3774100A1 (de
Inventor
Frederik Grosse Lordemann
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
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SMS Group GmbH
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Publication date
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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
    • 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
    • B21B45/0233—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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/60—Aqueous agents
    • 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
    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • 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
    • 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
    • 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
    • C21D2221/00—Treating localised areas of an article

Definitions

  • the invention relates to the use of a cooling device for cooling a metal product, in particular after the metal product has been rolled.
  • the invention relates to a method for producing or selecting a chilled beam for such a cooling device.
  • the European patent EP 2 155 411 B1 also discloses an approach to reducing a non-uniform temperature distribution, particularly at the edges of a metallic good. Masks are also provided here to cover the edges, but these masks can be moved or adjusted in the width direction and also allow a certain amount of coolant to pass onto the edges of the goods to be cooled.
  • the European patent specification EP 2 986 400 B1 discloses a chilled beam with multiple chambers, which can be individually charged with the coolant. In this way, different pressures or volume flows for the coolant can be set across the width of the nozzle bar. In particular, the pressure or volumetric flow distribution of the coolant across the width of the chilled beam can be adapted to the actual course of the temperature across the width of the metal goods in the inlet of a cooling device. With a constant density distribution of the spray nozzles on the chilled beam in the width direction, linear coolant volume flows can be set across the width of the chilled beam. This may be good for linear temperature distributions across the width.
  • the actual course of the temperature distribution over the width of the metal goods to be cooled or the chilled beam does not usually run in a purely linear manner, but rather often degressively or progressively.
  • the linear distribution of the coolant in individual width sections of the chilled beam disclosed in EP' 400 B1 is not expedient with regard to a desired greater accuracy in the compensation of predetermined temperature profiles. In particular, this can sometimes lead to undesired overcooling of the edges of the metal goods.
  • the invention is based on the object of developing a known use of a cooling device and a known method for its production such that the cooling effect generated by the cooling device on the metallic material can be better adapted to a real inlet temperature distribution.
  • the term "density of the cross-sectional areas” means the sum of the cross-sectional areas of the outlet openings of the coolant application elements per unit area of the chilled beam. To put it simply, this density describes the ratio of the outlet surface for the coolant to the unit area on the chilled beam.
  • the term "cross-sectional area” can also mean the cross-sectional area of a spray spot on the item to be cooled.
  • the density of the cross-sectional areas of the outlet openings of the coolant application elements is represented or can be represented by the distance between two adjacent coolant application elements projected onto the width direction of the chilled beam.
  • this projected distance in the width direction of the chilled beam is increased toward an edge of the chilled beam when the temperature of the metallic good drops toward that edge of the chilled beam. Because of the drop in temperature, less cooling capacity is then required in these latitude regions, which is achieved by increasing the projected distance between individual nozzles, in particular adjacent nozzles. This is equivalent to a reduction in the density of the cross-sectional areas of the outlet openings of the coolant application elements.
  • the density of the cross-sectional areas of the outlet openings need by no means become zero when the magnitude of the slope is zero, i. H. when the temperature distribution in the width direction is constant.
  • the density of the cross-sectional areas of the outlet openings is then also constant in the width direction over the corresponding width section, but typically not equal to zero, more precisely greater than zero.
  • the invention offers the advantage that even if the goods to be cooled are subjected to a constant volume flow or a constant pressure of the coolant across the width of the chilled beam, the said precise adjustment of the cooling capacity to the actual temperature profile is already possible solely through the corresponding claimed density distribution of the coolant application elements can be achieved with their respective cross-sectional areas.
  • the volume flow or the pressure of the coolant can also be set differently in individual width areas in order to adapt the distribution of the coolant and the cooling capacity in the width direction to the real temperature distribution.
  • the chilled beam can preferably be designed with a plurality of individual cooling chambers, which are charged with coolant in correspondingly different ways. This typically takes place via valves assigned to the individual chambers, which are correspondingly individually controlled by a control device.
  • the above object of the invention is further achieved by a method for manufacturing or selecting a cooling beam for a cooling device according to one of the preceding claims according to claim 4.
  • the claimed selection of a chilled beam relates to the case where the user has a number of different chilled beams in stock and he has to select a suitable chilled beam for a specific application.
  • FIG 1 shows in the middle the cooling device 100 according to the invention for cooling a metal material 200, as shown in the lower part of FIG figure 1 is shown.
  • the cooling device 100 comprises at least one cooling beam 110 with a plurality of coolant application elements 112. These can be spray nozzles, slots or U-tubes with corresponding outlet openings for the coolant.
  • the points or small circles shown within the cooling beam 110 each represent the coolant application elements 112.
  • the concentric circles around the coolant application elements 112 symbolize the respective cross-sectional areas 112 'of the outlet openings of the coolant application elements 112.
  • the cooling beam 110 is applied with coolant using a pump 140 , which is pumped by the pump 140 from a tank 130 into the chilled beam.
  • the coolant is pumped via a valve 150 which, preferably in the same way as the pump 140, is controlled individually by a control device 160.
  • the coolant application elements 112 are in figure 1 arranged on the underside of the chilled beam 110 in the form of parallel rows in the width direction. According to one embodiment, this may be so; however, this series arrangement is by no means mandatory. Alternatively, the coolant application elements 112 can also be distributed as desired on the underside of the cooling beam. It is also not necessary for the coolant application elements 112 to be arranged in several parallel rows; for example, the coolant application elements can also be arranged next to one another in just one row in the width direction. Also, for example, some of the coolant application elements 112 z. B. offset in the y-direction. For the purposes of the invention, all that matters is the distribution of the density of the cross-sectional areas in the width direction y of the chilled beam 110 . The distance between two coolant application elements spaced apart in the width direction or their corresponding cross-sectional areas is in figure 1 marked with a.
  • the density of the cross-sectional areas 112 ′ of the outlet openings of the coolant application elements 112 is uniformly distributed in the width direction y of the cooling beam 110 .
  • this uniform distribution is due to the figure 1 Uniformly distributed temperature of the metallic material shown above the chilled beam 110 over its width y.
  • the temperature here is, for example, T 0 and is constant over the entire width of the metallic material, ie the slope ⁇ of the T distribution is zero here.
  • the same cooling capacity is required over the entire width of the chilled beam, but it must be non-zero, more precisely greater than zero.
  • This is said by the Realized uniform distribution of the cross-sectional areas of the outlet openings of the coolant application elements.
  • this means that the traces of coolant produced by the coolant application on the metallic material to be cooled are preferably close to one another without an axial distance, as is shown in the lower figure of figure 1 is shown.
  • the cross-sectional areas 112′ of the outlet openings of the coolant application elements 112 on the cooling beam 110 can all be of the same size, but do not have to be.
  • spray nozzles each with a cylindrical coolant jet
  • the use of spray nozzles with the same cross-sectional areas is recommended; their radii r1 and r2 would then be equal.
  • the chilled beam according to the invention is manufactured or selected individually with regard to a predetermined temperature distribution of the metal material before it enters the cooling device. Different temperature distributions require different density distributions of the cross-sectional areas of the outlet openings of the coolant application elements.
  • the following steps according to the invention are to be carried out for the production: First of all, the temperature distribution of the metallic goods to be cooled must be determined across its width before it enters under the chilled beam. This determined temperature distribution is then ⁇ y with regard to latitude sections to evaluate in which the temperature increases, remains constant or decreases. This evaluation is carried out by evaluating or determining the slope of the temperature distribution.
  • the temperature distribution is understood as a functional relationship between the temperature and the width direction of the metallic item or the chilled beam, with this functional relationship being able to be determined by interpolating individual temperature measurement values in the width direction.
  • the sign of the slope is not important; therefore, the amounts of the gradients at individual locations or points in the direction of width must be determined in each case.
  • the chilled beam according to the invention is then to be equipped with coolant application elements in the width direction in such a way that the density of the cross-sectional areas of the outlet openings, i. H. the density of the coolant outlet surfaces of the coolant application elements in the width direction of the chilled beam is distributed and dimensioned in accordance with the amount of the slope of the distribution of the temperature of the metallic material over its width before the inlet under the chilled beam. If the temperature rises towards the edges of the metallic material, the density of the cross-sectional areas of the outlet openings must also be increased because more cooling capacity is then required in the edge regions. Conversely, if the temperature drops towards the edges of the metallic material, less cooling capacity is required; it is therefore sufficient there to dimension the density of the cross-sectional areas to be lower than in the central area of the metallic good or the chilled beam.
  • figure 2 shows a second embodiment of the invention. It differs from the one in figure 1 shown first embodiment is that the density of the cross-sectional areas 112 'of the outlet openings of the coolant application elements 112 decreases in the width direction of the chilled beam 110 to the edges of the chilled beam or the metal goods. Accordingly, in this embodiment, the edges of the metallic good less cooled than its central area. This is the one in the upper part of figure 2 due to the temperature distribution shown, where it can be seen that the temperature distribution drops towards the edges.
  • the gradients of the tangents to the temperature distribution are denoted there by ⁇ .
  • the reduced density of the cross-sectional areas in the edge regions of the chilled beam is realized in that the distances between the traces of coolant 114 generated by the coolant application on the metallic material to be cooled become larger towards the edges.
  • these distances a, a1, a2, a3 can be greater than zero, i. H. the traces of coolant do not have to be immediately adjacent and close to one another, but rather spaced apart from one another.
  • figure 3 12 shows a third exemplary embodiment of the invention, in which the density of the cross-sectional areas 112′ of the outlet openings of the coolant application elements 112 increases in the width direction y of the cooling beam 110.
  • the traces of coolant 114 caused by the individual coolant application elements or their coolant jets on the metallic item 200 to be cooled can increasingly overlap towards the edges, as is shown in the lower part of FIG figure 3 is shown.
  • the distances a, a1, a2, a3 therefore become increasingly smaller towards the edges.
  • This said density distribution of the coolant application elements or their cross-sectional areas is the one shown in the top figure of figure 3 due to the temperature distribution shown.
  • the temperature increases with respect to the central area of the metallic good towards its edges.
  • the slope of the temperature distribution is again identified here by the reference symbol ⁇ .

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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)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP19715872.8A 2018-04-13 2019-04-01 Kühleinrichtung zum kühlen eines metallischen gutes sowie verfahren zu deren herstellung und betrieb Active EP3774100B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102018205619 2018-04-13
DE102018211177.4A DE102018211177A1 (de) 2018-04-13 2018-07-06 Kühleinrichtung zum Kühlen eines metallischen Gutes sowie Verfahren zu deren Herstellung und Betrieb
PCT/EP2019/058124 WO2019197182A1 (de) 2018-04-13 2019-04-01 Kühleinrichtung zum kühlen eines metallischen gutes sowie verfahren zu deren herstellung und betrieb

Publications (2)

Publication Number Publication Date
EP3774100A1 EP3774100A1 (de) 2021-02-17
EP3774100B1 true EP3774100B1 (de) 2022-06-29

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EP19715872.8A Active EP3774100B1 (de) 2018-04-13 2019-04-01 Kühleinrichtung zum kühlen eines metallischen gutes sowie verfahren zu deren herstellung und betrieb

Country Status (6)

Country Link
US (1) US11446720B2 (ja)
EP (1) EP3774100B1 (ja)
JP (1) JP7074883B2 (ja)
CN (1) CN112041098B (ja)
DE (1) DE102018211177A1 (ja)
WO (1) WO2019197182A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018211177A1 (de) * 2018-04-13 2019-10-17 Sms Group Gmbh Kühleinrichtung zum Kühlen eines metallischen Gutes sowie Verfahren zu deren Herstellung und Betrieb

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2805172A1 (de) 1977-02-11 1978-08-17 Centre Rech Metallurgique Vorrichtung und verfahren zum abkuehlen von metallerzeugnissen
DE2855906A1 (de) 1978-12-23 1980-07-10 Lechler Gmbh & Co Kg Spritzvorrichtung
EP0449003A2 (de) 1990-03-28 1991-10-02 Sms Schloemann-Siemag Aktiengesellschaft Vorrichtung zum Kühlen von Walzband
US6062056A (en) 1998-02-18 2000-05-16 Tippins Incorporated Method and apparatus for cooling a steel strip
JP2012177145A (ja) 2011-02-25 2012-09-13 Jfe Steel Corp 高強度冷延鋼板の製造方法及び製造装置
WO2014170139A1 (de) 2013-04-15 2014-10-23 Siemens Vai Metals Technologies Gmbh Kühleinrichtung mit breitenabhängiger kühlwirkung
WO2015113832A1 (de) 2014-01-31 2015-08-06 Loi Thermprocess Gmbh Einrichtung zum kühlen von platten- oder bahnförmigem blech aus metall und verfahren zur wärmebehandlung
EP3308868A1 (de) 2016-10-17 2018-04-18 Primetals Technologies Austria GmbH Kühlung einer walze eines walzgerüsts
EP3395463A1 (de) 2017-04-26 2018-10-31 Primetals Technologies Austria GmbH Kühlung eines walzguts

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JPS612443U (ja) * 1984-06-12 1986-01-09 川崎製鉄株式会社 鋼板冷却設備のマスキング
JPS63149954U (ja) * 1987-03-23 1988-10-03
JPH05228525A (ja) * 1992-02-19 1993-09-07 Sumitomo Metal Ind Ltd 熱間圧延鋼帯の幅方向温度制御方法および装置
US5725046A (en) * 1994-09-20 1998-03-10 Aluminum Company Of America Vertical bar caster
DE10215229A1 (de) * 2002-04-06 2003-10-16 Sms Demag Ag Vorrichtung zum Kühlen von Walzgut innerhalb der Kühlstrecke einer Walzanlage
JP2004034109A (ja) 2002-07-04 2004-02-05 Sumitomo Metal Ind Ltd 高温鋼材の冷却方法と冷却装置および熱間圧延鋼板の製造方法
DE102007053523A1 (de) * 2007-05-30 2008-12-04 Sms Demag Ag Vorrichtung zur Beeinflussung der Temperaturverteilung über der Breite
DE102008049537A1 (de) * 2008-09-30 2010-04-01 Sms Siemag Aktiengesellschaft Verfahren und Vorrichtung zum Kühlen eines Vorbandes oder Bandes eines Metallstrangs in einem Warmwalzwerk
JP6245766B2 (ja) 2015-05-26 2017-12-13 Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 熱延鋼板の冷却装置及びそのマスク部材位置調整方法
DE102018211177A1 (de) * 2018-04-13 2019-10-17 Sms Group Gmbh Kühleinrichtung zum Kühlen eines metallischen Gutes sowie Verfahren zu deren Herstellung und Betrieb
CN109092913A (zh) 2018-07-31 2018-12-28 燕山大学 改变层流冷却集管喷管间距的层流冷却方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2805172A1 (de) 1977-02-11 1978-08-17 Centre Rech Metallurgique Vorrichtung und verfahren zum abkuehlen von metallerzeugnissen
DE2855906A1 (de) 1978-12-23 1980-07-10 Lechler Gmbh & Co Kg Spritzvorrichtung
EP0449003A2 (de) 1990-03-28 1991-10-02 Sms Schloemann-Siemag Aktiengesellschaft Vorrichtung zum Kühlen von Walzband
US6062056A (en) 1998-02-18 2000-05-16 Tippins Incorporated Method and apparatus for cooling a steel strip
JP2012177145A (ja) 2011-02-25 2012-09-13 Jfe Steel Corp 高強度冷延鋼板の製造方法及び製造装置
WO2014170139A1 (de) 2013-04-15 2014-10-23 Siemens Vai Metals Technologies Gmbh Kühleinrichtung mit breitenabhängiger kühlwirkung
WO2015113832A1 (de) 2014-01-31 2015-08-06 Loi Thermprocess Gmbh Einrichtung zum kühlen von platten- oder bahnförmigem blech aus metall und verfahren zur wärmebehandlung
EP3308868A1 (de) 2016-10-17 2018-04-18 Primetals Technologies Austria GmbH Kühlung einer walze eines walzgerüsts
EP3395463A1 (de) 2017-04-26 2018-10-31 Primetals Technologies Austria GmbH Kühlung eines walzguts

Also Published As

Publication number Publication date
DE102018211177A1 (de) 2019-10-17
CN112041098B (zh) 2022-10-28
JP2021517866A (ja) 2021-07-29
CN112041098A (zh) 2020-12-04
US11446720B2 (en) 2022-09-20
EP3774100A1 (de) 2021-02-17
JP7074883B2 (ja) 2022-05-24
WO2019197182A1 (de) 2019-10-17
US20210154713A1 (en) 2021-05-27

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