EP2344287A2 - Procédé et dispositif pour le refroidissement d'une bande préliminaire ou d'une bande d'une ligne continue métallique dans un laminoir à chaud - Google Patents

Procédé et dispositif pour le refroidissement d'une bande préliminaire ou d'une bande d'une ligne continue métallique dans un laminoir à chaud

Info

Publication number
EP2344287A2
EP2344287A2 EP09778628A EP09778628A EP2344287A2 EP 2344287 A2 EP2344287 A2 EP 2344287A2 EP 09778628 A EP09778628 A EP 09778628A EP 09778628 A EP09778628 A EP 09778628A EP 2344287 A2 EP2344287 A2 EP 2344287A2
Authority
EP
European Patent Office
Prior art keywords
strip
band
rolling mill
coolant
cooling
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.)
Granted
Application number
EP09778628A
Other languages
German (de)
English (en)
Other versions
EP2344287B1 (fr
Inventor
Jürgen Seidel
Uwe BAUMGÄRTEL
Andreas Wied
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 Siemag AG
Original Assignee
SMS Siemag AG
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 Siemag AG filed Critical SMS Siemag AG
Publication of EP2344287A2 publication Critical patent/EP2344287A2/fr
Application granted granted Critical
Publication of EP2344287B1 publication Critical patent/EP2344287B1/fr
Active 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
    • 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
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0035—Forging or pressing devices as units
    • B21B15/005—Lubricating, cooling or heating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements
    • B21B39/084—Looper devices

Definitions

  • the invention relates to a method and apparatus for cooling a pre-strip or strip of a metal strand in a work rolls having hot rolling mill, in which a coolant is sprayed onto the pre-strip or the tape.
  • cooling devices in the area of the roughing and finishing mill are known or defined, such as:
  • the pre-strip cooling (arrangement between the roughing stand and the first finishing stand)
  • the interstage cooling (arranged between two finishing stands)
  • the various cooling devices influence surface temperature control, scale growth, mechanical properties, production volume, etc.
  • the cooling effect is even over the bandwidth.
  • the pre-strip temperature and the strip temperature are colder in the entire finishing line in the strip edge region.
  • this effect is enhanced.
  • the new cooling method or cooling device will be described in more detail in the exemplary example of roll gap cooling.
  • a device of this kind is known from patent DE 4134599 C1. This is a method for hot rolling of metal strip with one or more stitches, wherein mainly on the inlet side of the rolling stand or the rolling stands, the pre-strip or the strip is cooled.
  • the known method is characterized in that the spraying of the cooling liquid on the feed side takes place in a region extending over the entire width of the metal strip as close as possible to the roll gap on the metal strip and on the shells of the work rolls such that the strip surface is supercooled and so a lower heat flow is created in the work roll.
  • the temperature of the pre-strip and the strip of a metal strip to be rolled in the strip edge region is lower than in the middle of the pre-strip or of the strip.
  • the temperature of a metal strip is shown as a function of the width of the metal strip passing through stands of a hot rolling mill. In this case, the band center of the metal strip is shown on the left edge of the diagram.
  • a curve 1 shows the course of the temperature before the shrinkage of the metal strip in a roll stand.
  • a curve 2 shows the temperature profile after exiting the mill stand. Both curves show the strong temperature drop in the edge area of the metal strip.
  • the temperature of the metal strip ie also of the pre-strip, in the Edge region is lower than in the middle, there is a different local load on the metal strip, which has a negative impact on both the work rolls and on the metal strip itself.
  • the affected areas of the work rolls may wear more severely, causing profile anomalies and / or flatness problems.
  • the cold strip edges can also adversely affect the metallurgical properties at the edge of the strip.
  • this object is achieved in that the pre-strip or the band is shielded in the region of the band edges of the application of the coolant.
  • a method is used, according to which the coolant is deflected in the region of the strip edges of the pre-strip or the strip, so that it does not hit the pre-band or the band in the area of the band edge.
  • the coolant is deflected in the region of the strip edges to areas outside of the pre-strip or of the strip, although in principle it is also possible to divert the coolant to the center of the strip.
  • the measures according to the invention are taken in the area of the inlet guide of the work rolls.
  • the invention also relates to a hot rolling mill with a roughing train and a finishing train for rolling a pre-strip or a strip of a metal strand by means of work rolls and with a cooling device for applying a coolant to the pre-strip or the band.
  • This is according to the invention characterized in that means for shielding the strip edges of the pre-strip, the thin slab or the strip are provided by the action ofmémitteis.
  • the means are arranged in the region of side guides of the pre-strip or of the band.
  • the side guides are in particular arranged in each case in front of an inlet gap formed in each case by two work rolls.
  • the means for shielding the band edges are respectively attached to the side guides, in particular as separate components. They can advantageously be moved together with the side guides transversely to the web running direction of the pre-band or the band.
  • the shielding means also advantageously provide for directing the coolant away from the pre-strip or belt.
  • the shielding means can also be arranged in the area behind a loop lifter (looper) on the underside of the pre-strip or the band.
  • 2a is a sectional view of a rolling mill passing through a metal strip in the region between two chilled beams transversely to the direction with side guides and facilities in the side region of the metal strip to shield the coolant from the edge portions of the metal strip in front of the inlet gap of two work rolls
  • Fig. 2b is a plan view of the metal strip according to 2a and additionally a shielding device for shielding the coolant, which is arranged in front of the inlet side guide
  • Fig. 3 is a sectional view of the metal strip and a side guide along a line III - III of Fig. 2a and in addition the cross section of the attached before the side guide shield.
  • a preliminary strip and a strip 4 (FIGS. 2 a, 3) of a metal strand to be rolled pass through a pair of work rolls 6, 7 in the area in front of the work rolls 6, 7 at the side edges of the strip 4 side guides 8, 9 attached, which are approximately U-shaped in cross-section and overlap the band 4 on the top and bottom in its edge region.
  • cooling bars 10, 11 cooling devices from the nozzles 12 On the top and bottom of the belt 4 are provided as cooling bars 10, 11 cooling devices from the nozzles 12, a coolant, in particular water, is sprayed under pressure on the surface of the belt 4 to cool this.
  • the nozzles 12 generate on the surface of the belt 4 impact areas 13 of the coolant.
  • shielding devices 14, 15 are provided which prevent cooling medium from the nozzles 12 'in the edge region of the belt 4 from being irradiated directly onto the edge region of the belt 4.
  • the Ablevoriquese ⁇ 14, 15 deflect the coolant jet in each case preferably in an area laterally outside the belt 4.
  • the upper-side shielding device 14 therefore comprises on both sides of the band 4 to the outside of the band 4 downwardly inclined plates 16 and 17.
  • plates 18, 19 of the shielding device 15 may also be flat, relative to the plane formed by the band 4, since the coolant is already deflected downwards due to gravity.
  • the shielding devices 14, 15 and 16, 18 can be attached to the guides 8, 9 as separate components, or the shielding devices 14, 15 and 16, 18 are fixed components of the guides 8, 9.
  • the guides 8, 9 according to the width of the strip 4 to be rolled transversely to the direction of the tape 4 in the direction of double arrows A, B are displaced, then the shielding devices 14, 15 and 16, 18 are moved accordingly.
  • the plates 18, 19 are tiltable to adjust the impact area of the shielded coolant jet.
  • a shielding device 20 can also be arranged in front of the side guide 8, 9 on the underside of the belt 4, which additionally in Fig. 2b 3 is shown.
  • the shielding device 20 is basically constructed like the shielding devices 14, 15 and 16, 18 and also includes like these plates 21 for deflecting the coolant flowing from nozzles 22 of a cooling bar 23.
  • the invention is applicable regardless of whether the coolant flows from individual nozzles or is irradiated in the form of a curtain on the belt 4, which has a the width of the belt 4 over-extending rectangular nozzle opening.
  • the coolant flows from individual nozzles or is irradiated in the form of a curtain on the belt 4, which has a the width of the belt 4 over-extending rectangular nozzle opening.
  • other media such as liquid nitrogen or water-air mixtures can be used as the coolant.
  • the device shown in the figures for edge shielding the band 4 can be used at various points within the finishing train especially in case of pre-strip cooling or interstage cooling. In this case, separate adjustment mechanisms for moving and adapting the shielding elements to the bandwidth can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

L'invention concerne un laminoir présentant des moyens de refroidissement d'une bande préliminaire ou d'une bande (4) d'une ligne continue métallique dans un système à cylindres de travail (6, 7), dans lequel un agent réfrigérant est pulvérisé sur la bande préliminaire ou sur la bande (4), caractérisé en ce que la bande préliminaire ou la bande (4) est protégée dans la zone des bords de la bande, contre les injections de réfrigérant. Des dispositifs de protection (14, 15) sont utilisés à cet effet. De même, un dispositif de protection (20) peut être disposé dans la zone d'un releveur de boucles, ou bien un dispositif de protection peut être disposé dans un dispositif de refroidissement entre la cage et le train finisseur.
EP09778628.9A 2008-09-30 2009-09-21 Procédé et dispositif pour le refroidissement d'une bande préliminaire ou d'une bande d'une ligne continue métallique dans un laminoir à chaud Active EP2344287B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008049537A DE102008049537A1 (de) 2008-09-30 2008-09-30 Verfahren und Vorrichtung zum Kühlen eines Vorbandes oder Bandes eines Metallstrangs in einem Warmwalzwerk
PCT/EP2009/006802 WO2010037481A2 (fr) 2008-09-30 2009-09-21 Procédé et dispositif pour le refroidissement d'une bande préliminaire ou d'une bande d'une ligne continue métallique dans un laminoir à chaud

Publications (2)

Publication Number Publication Date
EP2344287A2 true EP2344287A2 (fr) 2011-07-20
EP2344287B1 EP2344287B1 (fr) 2013-11-06

Family

ID=41719871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09778628.9A Active EP2344287B1 (fr) 2008-09-30 2009-09-21 Procédé et dispositif pour le refroidissement d'une bande préliminaire ou d'une bande d'une ligne continue métallique dans un laminoir à chaud

Country Status (11)

Country Link
US (1) US9539629B2 (fr)
EP (1) EP2344287B1 (fr)
JP (1) JP5554335B2 (fr)
KR (1) KR101279387B1 (fr)
CN (1) CN102164688A (fr)
BR (1) BRPI0919507A2 (fr)
CA (1) CA2738832C (fr)
DE (1) DE102008049537A1 (fr)
RU (1) RU2467815C1 (fr)
UA (1) UA98897C2 (fr)
WO (1) WO2010037481A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009060256A1 (de) * 2009-12-23 2011-06-30 SMS Siemag AG, 40237 Verfahren zum Warmwalzen einer Bramme und Warmwalzwerk
CZ305053B6 (cs) * 2013-02-22 2015-04-15 Vysoké Učení Technické V Brně Zařízení k chlazení extrudovaných nebo válcovaných kovových profilů
EP3002343A1 (fr) * 2014-09-30 2016-04-06 Voestalpine Stahl GmbH Procédé de formation d'acier en bande ayant différentes propriétés mécaniques sur la largeur d'une bande
DE102015223787A1 (de) * 2015-10-09 2017-04-13 Sms Group Gmbh Verfahren und Vorrichtung zum Herstellen eines metallischen Bandes durch Endloswalzen
DE102017206540A1 (de) * 2017-04-18 2018-10-18 Sms Group Gmbh Vorrichtung und Verfahren zum Kühlen von Metallbändern oder -blechen
DE102018211177A1 (de) * 2018-04-13 2019-10-17 Sms Group Gmbh Kühleinrichtung zum Kühlen eines metallischen Gutes sowie Verfahren zu deren Herstellung und Betrieb
CN109821911A (zh) * 2019-03-19 2019-05-31 河钢股份有限公司承德分公司 精轧机中间导卫板

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JPS5371661A (en) * 1976-12-09 1978-06-26 Kobe Steel Ltd Metal plate cold rolling process
JPS5832511A (ja) * 1981-08-21 1983-02-25 Nippon Kokan Kk <Nkk> 厚鋼板の冷却方法
JPS5978710A (ja) 1982-10-29 1984-05-07 Kawasaki Steel Corp 熱間圧延温度制御方法
DE3523483A1 (de) 1985-07-01 1987-01-08 Achenbach Buschhuetten Gmbh Walzenkuehl- und/oder schmiervorrichtung fuer kaltbandwalzwerke, insbesondere feinbandwalzwerke
JPS6261713A (ja) * 1985-09-09 1987-03-18 Nippon Kokan Kk <Nkk> 熱間圧延鋼板の冷却方法
SU1761329A1 (ru) * 1989-01-09 1992-09-15 Институт Черной Металлургии Ссср Способ охлаждени гор чекатаного листового проката
JP3145144B2 (ja) 1991-09-10 2001-03-12 大日本塗料株式会社 型内被覆組成物
DE4134599C1 (fr) 1991-10-18 1993-02-25 Thyssen Stahl Ag, 4100 Duisburg, De
US5235840A (en) * 1991-12-23 1993-08-17 Hot Rolling Consultants, Ltd. Process to control scale growth and minimize roll wear
JP2549694Y2 (ja) * 1992-02-21 1997-09-30 新日本製鐵株式会社 熱間圧延材の上部冷却装置
RU2067904C1 (ru) * 1993-02-01 1996-10-20 Попыванов Геннадий Серафимович Способ управления условиями охлаждения нагретого тела
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Also Published As

Publication number Publication date
KR101279387B1 (ko) 2013-07-04
EP2344287B1 (fr) 2013-11-06
DE102008049537A1 (de) 2010-04-01
JP2012504052A (ja) 2012-02-16
BRPI0919507A2 (pt) 2018-02-14
WO2010037481A3 (fr) 2010-07-15
UA98897C2 (ru) 2012-06-25
CA2738832A1 (fr) 2010-04-08
US20110209515A1 (en) 2011-09-01
KR20110044317A (ko) 2011-04-28
CA2738832C (fr) 2013-11-05
US9539629B2 (en) 2017-01-10
JP5554335B2 (ja) 2014-07-23
WO2010037481A2 (fr) 2010-04-08
CN102164688A (zh) 2011-08-24
RU2467815C1 (ru) 2012-11-27

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