EP2516079A2 - Procédé de laminage à chaud d'une brame et laminoir à chaud - Google Patents

Procédé de laminage à chaud d'une brame et laminoir à chaud

Info

Publication number
EP2516079A2
EP2516079A2 EP10803583A EP10803583A EP2516079A2 EP 2516079 A2 EP2516079 A2 EP 2516079A2 EP 10803583 A EP10803583 A EP 10803583A EP 10803583 A EP10803583 A EP 10803583A EP 2516079 A2 EP2516079 A2 EP 2516079A2
Authority
EP
European Patent Office
Prior art keywords
slab
cooling
hot rolling
rolling mill
hot
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
EP10803583A
Other languages
German (de)
English (en)
Other versions
EP2516079B1 (fr
Inventor
Klaus Berchem
Ingo Schuster
Dirk Schmidt
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 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=44072737&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2516079(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SMS Siemag AG filed Critical SMS Siemag AG
Publication of EP2516079A2 publication Critical patent/EP2516079A2/fr
Application granted granted Critical
Publication of EP2516079B1 publication Critical patent/EP2516079B1/fr
Revoked 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • 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
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B2001/028—Slabs
    • 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
    • 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

Definitions

  • the invention relates to a method for hot rolling a slab, in particular a steel slab, wherein the slab is subjected to at least two deformations at different temperatures in a hot rolling mill, wherein the slab is cooled between two such transformations. Furthermore, the invention relates to a hot rolling mill for hot rolling a slab.
  • Hot rolling of a slab is well known in the art.
  • a multi-phase hot rolling is used as a preferred method, wherein a turn special procedure is the thermomechanical see rolling (TM method).
  • a typical application of this method is the production of hot rolled steel strip and sheet from microalloyed steels.
  • the aim is a high homogeneity of the material, which is made from the hot-rolled slab, d. H.
  • the material properties should be spatially constant in the material. To achieve this, the highest possible temperature homogeneity in the slab during hot rolling is required, i. H. the intermediate slab, resulting in even properties of the final product.
  • thermomechanical rolling-intervals are set between the individual rolling phases in which the slab is uniformly cooled to a new, lower temperature. Once the target temperature is reached, the next rolling phase begins. That's it technologically advantageous that the intermediate slabs have a uniform temperature.
  • the present invention is therefore based on the object, a method and an associated rolling mill of the type mentioned in such a way that the above-mentioned disadvantages are avoided. Accordingly, it should be possible to maintain a high quality of the intermediate slab and the end product. Furthermore, the hot rolling process after the first slab cooling should be optimally performed.
  • the solution of this problem by the invention according to the method is characterized in that an active cooling of the slab is carried out so that the lateral borrowed end portions of the slab are subjected to a lower cooling capacity, as a central region of the slab.
  • the cooling of the slab is preferably carried out by applying a cooling medium, wherein the lateral end portions of the slab are at least partially shielded by the cooling medium.
  • the cooling of the slab can take place in an intermediate cooling stand or on a cooling section. By controlling the active cooling, it may be ensured that there is no undesirable transformation of austenite into ferrite during the active cooling phase.
  • the hot rolling of the slab is preferably a multi-phase rolling, in particular a thermomechanical rolling.
  • the proposed hot rolling mill for hot rolling a slab has at least two hot rolling stands, wherein either between these or in front of the roughing stand at least one cooling station is arranged, in which the slab can be cooled.
  • the hot rolling mill is characterized in that the cooling station comprises means by which the cooling power applied to the slab can be varied across the width of the slab, such that the slab is cooled so that the lateral end portions of the slab have a lower cooling capacity be acted as a central region of the slab.
  • the means are according to a preferred embodiment covering elements, which are designed to cover the lateral end portions of the slab for protection against cooling medium.
  • the means are a cooling beam for the application of cooling medium to the slab, wherein the width of the jet of the cooling medium is adjustable over the width of the slab.
  • the cooling station is preferably an intermediate cooling stand or a cooling section.
  • an active intermediate cooling is thus carried out during hot rolling, which is designed so that the side regions (edges) of the slab are not cooled with.
  • active cooling and after a balancing period a slab is obtained which produces a more uniform temperature.
  • the distribution of heat has as a conventionally cooled Brannnne, regardless of whether the cooling is active or passive (in the air).
  • the hot rolling mill is characterized in that the cooling process is optionally controlled by means of a connected temperature calculation in such a way that a drop below the ferrite precipitation temperature can be avoided, so that a possibly undesirable ferrite formation can be ruled out.
  • the hot rolling mill is characterized in that the cooling width is adjusted by electrical or mechanical means to the appropriate cooling width.
  • Fig. 1 shows schematically the side view of a hot rolling mill, wherein only two hot rolling stands are sketched with a cooling station arranged therebetween
  • Fig. 2 shows schematically the section A-B of FIG. 1, shown for the upper
  • a hot rolling mill 2 is sketched in which a slab 1 can be rolled.
  • a number of hot rolling stands 8, 9 are present, with only two of these stands are shown.
  • the slab is conveyed during rolling in the rolling direction W and thereby rolled in a known manner.
  • the slab undergoes thermo-mechanical processing during rolling. Accordingly, the slab 1 in a first hot rolling mill 8 is subjected to thickness reduction.
  • the slab 1 is cooled, for which it is passed through a cooling station 7, which is designed here as an intermediate cooling scaffold.
  • the slab 1 passes under the spray of the cooling medium 6 in the rolling direction W under the chilled beam over (from below, the slab is also - which is not shown - sprayed by a chilled beam), whereby the slab 1 is cooled.
  • cover plates 10 and 11 are present, which are pushed in the direction of the double arrows in the direction of the slab center so that a sufficiently large side region of the slab is prevented from direct contact is protected with cooling medium 6. Meanwhile, the central area 5 of the slab receives the full cooling capacity from the cooling medium.
  • the position of the cover plates 10 and 11 it can be influenced to what extent the side areas 3, 4 of the slab 1 are to be protected, so that overall a homogeneous temperature distribution over the width of the slab 1 can be ensured by selecting the mentioned parameters.
  • the width and the position of the slab are known from the last centering of the slab in front of the cooling station 7 and can from Level 2 will be passed.
  • the setting or positioning of the cover plates 10 and 1 1 is carried out accordingly.
  • FIG. 1 Another embodiment of the present concept is shown in FIG. Thereafter, a cooling bar 12 is used, which covers a sufficient width of the slab 1.
  • slide 10 'and 1 1' are provided on the cooling beam 12, which cover the edge regions of the cooling beam 12 and, in particular, the nozzles located there, so that the width of the cooling jet can be adjusted more or less large.
  • the slide 10 ', 1 1' are moved accordingly in the direction of the double arrow.
  • the effect is the same as in the solution according to FIG. 2.
  • the lateral end regions 3, 4 of the slab 1 are subjected to less cooling medium, while the central region 5 receives the maximum cooling power.
  • the edges of the slab can thus be protected during active cooling either by extending "drawers" (as in the cooling section) - see the solution according to Fig. 2 - or by the fact that only cooling bars are controlled, their spray pattern specifically to a specific slab width
  • the solution according to FIG. 3 is of course conceivable. Of course, other technical implementations of the inventive concept are also possible.

Landscapes

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

Abstract

L'invention concerne un procédé de laminage à chaud d'une brame (1), en particulier d'une brame d'acier, ladite brame (1) subissant au moins deux déformations à différentes températures dans un laminoir à chaud (2) et étant refroidie entre deux déformations. Selon l'invention, pour empêcher une formation prématurée de ferrite lors du laminage à chaud, la brame (1) est refroidie de telle sorte que ses zones d'extrémité latérales (3, 4) sont soumises à une puissance de refroidissement réduite par rapport à une zone centrale (5) de la brame (1). L'invention concerne en outre un laminoir à chaud (2) pour laminer à chaud une brame.
EP10803583.3A 2009-12-23 2010-12-06 Procédé de laminage à chaud d'une brame et laminoir à chaud Revoked EP2516079B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009060256A DE102009060256A1 (de) 2009-12-23 2009-12-23 Verfahren zum Warmwalzen einer Bramme und Warmwalzwerk
PCT/EP2010/068904 WO2011076544A2 (fr) 2009-12-23 2010-12-06 Procédé de laminage à chaud d'une brame et laminoir à chaud

Publications (2)

Publication Number Publication Date
EP2516079A2 true EP2516079A2 (fr) 2012-10-31
EP2516079B1 EP2516079B1 (fr) 2015-02-11

Family

ID=44072737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10803583.3A Revoked EP2516079B1 (fr) 2009-12-23 2010-12-06 Procédé de laminage à chaud d'une brame et laminoir à chaud

Country Status (7)

Country Link
US (1) US20120297849A1 (fr)
EP (1) EP2516079B1 (fr)
KR (1) KR101421976B1 (fr)
CN (1) CN102655959B (fr)
DE (1) DE102009060256A1 (fr)
RU (1) RU2528560C2 (fr)
WO (1) WO2011076544A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110891702A (zh) * 2017-07-24 2020-03-17 首要金属科技奥地利有限责任公司 具有用于冷却钢带的框架式冷却器的辊框架

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103551397B (zh) * 2013-10-21 2015-11-04 中冶赛迪上海工程技术有限公司 一种轧制生产线控温装置工艺设备
CN106944492A (zh) * 2016-01-06 2017-07-14 天津皕劼同创精密钛铸造有限公司 一种ta17钛合金板材的制备方法
JP6439943B2 (ja) * 2016-03-31 2018-12-19 Ｊｆｅスチール株式会社 鋼板の下面冷却方法および冷却装置
CN110050077A (zh) * 2016-12-07 2019-07-23 艾伯纳工业筑炉有限公司 用于对构件进行调温的调温装置
WO2018179449A1 (fr) * 2017-03-31 2018-10-04 新日鐵住金株式会社 Dispositif et procédé de refroidissement de tôle d'acier laminée à chaud
DE102017220891A1 (de) * 2017-11-22 2019-05-23 Sms Group Gmbh Verfahren zum Kühlen eines metallischen Guts und Kühlbalken
DE102018205685A1 (de) * 2018-04-13 2019-10-17 Sms Group Gmbh Kühleinrichtung und Verfahren zu deren Betrieb
CN110238207A (zh) * 2019-05-29 2019-09-17 北京科技大学 一种用于板带钢控制冷却系统的边部遮蔽装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153688A1 (fr) 1984-02-20 1985-09-04 Nippon Steel Corporation Procédé de refroidissement de tôles chaudes en acier

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JPS5832511A (ja) * 1981-08-21 1983-02-25 Nippon Kokan Kk <Nkk> 厚鋼板の冷却方法
GB8829272D0 (en) * 1988-12-15 1989-01-25 Davy Mckee Sheffield The operation of a multi-stand hot rolling mill
JPH07150229A (ja) * 1993-11-26 1995-06-13 Kawasaki Steel Corp 熱間厚鋼板の制御冷却装置
US5545269A (en) * 1994-12-06 1996-08-13 Exxon Research And Engineering Company Method for producing ultra high strength, secondary hardening steels with superior toughness and weldability
DE19611782C2 (de) * 1996-03-13 1999-08-19 Mannesmann Ag Verfahren und Vorrichtung zum Herstellen eines Hohlkörpers aus massivem Rundstahl
DE19632448A1 (de) * 1996-08-05 1998-02-12 Mannesmann Ag Verfahren und Anlage zur Herstellung von Band aus niedriggekohlten und ultraniedriggekohlten Stählen
DE19725434C2 (de) * 1997-06-16 1999-08-19 Schloemann Siemag Ag Verfahren zum Walzen von Warmbreitband in einer CSP-Anlage
ITMI20021996A1 (it) * 2002-09-19 2004-03-20 Giovanni Arvedi Procedimento e linea di produzione per la fabbricazione di nastro a caldo ultrasottile sulla base della tecnologia della bramma sottile
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
EP2305392A1 (fr) * 2009-10-05 2011-04-06 Siemens Aktiengesellschaft Procédé de laminage de matériaux de laminage et train de laminage doté d'au moins une cage de laminoir pour le laminage thermomécanique de matériaux de laminage
JP5577353B2 (ja) * 2009-12-08 2014-08-20 本田技研工業株式会社 ワークの打ち抜き製造方法

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Publication number Priority date Publication date Assignee Title
EP0153688A1 (fr) 1984-02-20 1985-09-04 Nippon Steel Corporation Procédé de refroidissement de tôles chaudes en acier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110891702A (zh) * 2017-07-24 2020-03-17 首要金属科技奥地利有限责任公司 具有用于冷却钢带的框架式冷却器的辊框架
CN110891702B (zh) * 2017-07-24 2021-10-15 首要金属科技奥地利有限责任公司 具有用于冷却钢带的框架式冷却器的辊框架

Also Published As

Publication number Publication date
CN102655959A (zh) 2012-09-05
WO2011076544A3 (fr) 2011-08-18
EP2516079B1 (fr) 2015-02-11
US20120297849A1 (en) 2012-11-29
RU2528560C2 (ru) 2014-09-20
WO2011076544A2 (fr) 2011-06-30
KR20120102740A (ko) 2012-09-18
KR101421976B1 (ko) 2014-07-22
CN102655959B (zh) 2016-05-18
DE102009060256A1 (de) 2011-06-30
RU2012131155A (ru) 2014-01-27

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