EP1654076B1 - Procede pour prolonger le cycle de coulee lors de la coulee a deux cylindres d'un feuillard et installation pour la mise en oeuvre dudit procede - Google Patents

Procede pour prolonger le cycle de coulee lors de la coulee a deux cylindres d'un feuillard et installation pour la mise en oeuvre dudit procede Download PDF

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Publication number
EP1654076B1
EP1654076B1 EP04764123A EP04764123A EP1654076B1 EP 1654076 B1 EP1654076 B1 EP 1654076B1 EP 04764123 A EP04764123 A EP 04764123A EP 04764123 A EP04764123 A EP 04764123A EP 1654076 B1 EP1654076 B1 EP 1654076B1
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EP
European Patent Office
Prior art keywords
rolling
roll
casting
working rolls
rolls
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
EP04764123A
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German (de)
English (en)
Other versions
EP1654076A1 (fr
Inventor
Heinrich Marti
Jacques Barbe
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.)
Main Management Inspiration AG
SMS Siemag AG
Original Assignee
Main Management Inspiration AG
SMS Demag AG
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Publication of EP1654076A1 publication Critical patent/EP1654076A1/fr
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Publication of EP1654076B1 publication Critical patent/EP1654076B1/fr
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Classifications

    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • B21B1/463—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 metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/106—Vertical displacement of rolls or roll chocks during horizontal roll changing
    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/12—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by vertically displacing

Definitions

  • the invention relates to a method for extending the casting cycle in two-roll strip casting, with in-line rolls for the steel strip, which is rolled in at least one, preferably two successive rolling units of a rolling mill with interchangeable work rolls.
  • the invention further relates to a system for carrying out the method.
  • a generic method and a generic device are eg from document EP-A 0707908 known.
  • Rolling work rolls are known to be subject to wear during operation. Therefore, it is necessary in rolling operation, in particular regularly replace the work rolls of the rolling units in the Endbanddicken Scheme to avoid that wear marks on the Endband lead to errors or that a bad strip surface is generated.
  • the rolling temperature is about 1000 ° -1200 ° C, ie as much as in the conventional hot rolling operation.
  • the belt speed is only 0.5-2.0 m / s and is thus much lower than in conventional operation, in which rolling at rolling speeds of about 20 m / s. Casting cycles of 10 hours or more are the goal in the casting process.
  • the invention has for its object to extend the casting cycle in two-roll strip casting of steel strip with in-line rolls of steel strip.
  • This object is achieved according to the invention in that in the rolling mill the work rolls to be changed are exchanged during casting under or over the steel strip and laterally out of the rolling unit. In this way it is possible to continue the casting process independently of the rolling process, because the casting cycle is not limited by the limited durability of the roll surface of the rolling work rolls.
  • the invention further provides that in the case of two successive rolling units during the roll change of the one rolling unit with the work rolls of the other rolling unit in use, a greater strip thickness than before the roll change is produced, namely according to the reduction rate of this unit.
  • the invention provides that, for the time being, the respective driven strip thickness is controlled by the work rolls of the rolling unit in use before the work rolls to be changed are relaxed.
  • the parameters influencing the casting thickness in the casting process such as casting speed and / or bath level height and / or heat dissipation and / or temperature of the introduced liquid steel, are changed during the roll change. This makes it possible, during the roll change, to vary the casting thickness according to the requirements of the rolling unit in operation.
  • the invention further relates to a system for carrying out the method according to the invention, whose at least one rolling unit, preferably its two successive rolling units are provided with over or under the steel band interchangeable work rolls.
  • the upper work rolls are inventively provided with lifting devices by means of which they can be lifted off the steel strip and pulled out laterally.
  • the work rolls can be raised by the lifting devices, and that the rolling mill are provided in front of and behind the work rolls with lifting rollers for the steel strip.
  • the lifting rollers are arranged at the free end of pivot levers.
  • the invention provides that the work rolls can be supported on moving and / or swing-in guides.
  • the invention provides that the work rolls to be replaced are provided with a common pull-out device.
  • the rolling mill shown in Figures 1 and 2 consists of two successive rolling units 1 and 2, each with a framework 3 or 4 and a pair of rolling work rolls 5a, 5b and 6a, 6b with support rollers 7a, 7b and 8a, 8b equipped. Both roller units are formed identically in detail. For the sake of simplicity, therefore, only the rolling unit 2 will be described in more detail below.
  • the work rolls 6a, 6b of this unit are mounted on bearing housings 9, 10 and 11, 12, which are supported on guide beams 13 and 14, respectively.
  • further guides 15, 16 are arranged for receiving the work rolls 6a and 6b when replacing the rolls.
  • the guide supports 13, 14 and thus the working rollers 6a and 6b supported thereon can be raised by means of hydraulic lifting devices 17, which are effective on support housings 19 and 20 of the guide supports 13, 14 together with working rollers 6a and 6b.
  • Their stroke direction is indicated in FIG. 2 by the reference numbers 21, 22.
  • the lifting rollers 24, 25 are arranged at the free ends of pivoting levers 26 and 27, respectively.
  • the work rolls 6a, 6b are associated with a pull-out device, not shown, for jointly pulling out the rolls from the area of the rolling line. Your pulling direction is indicated in Figure 2 by the reference numeral 28.
  • the respective driven strip thickness is initially controlled with the work rolls 5a, 5b of the rolling unit 1, namely before the work roll pair 6a, 6b to be changed is relaxed.
  • the roller unit 1 temporarily without transition, the same strip thickness as before with the two roller units 1 and 2 is generated together, in which case the roller unit 1 takes over the total reduction rate of the two rolling units.
  • the guide beams 13 and 14 are raised with the work rolls 6a, 6b by means of the lifting devices 17. Simultaneously with the steel strip 23 is lifted by means of the lifting rollers 24, 25.
  • the stroke of the work rolls and the steel strip is dimensioned so that after lifting the same above and below the steel strip between it and the work rolls an intermediate gap is formed. This ensures that when you replace the work rolls, they do not damage the tape surface.
  • the lifting devices 17 in such a way that they directly on the guide support 13, 14 of the Work rolls 6a, 6b are effective. In this case, the upper work roll 6a is lifted together with its associated support roll 8a, while the lower work roll 6b alone can be lifted.
  • the guides 15, 16 are moved with the work rolls. They can also be swiveled in and out as required.
  • each work roll may have its own pull-out device.
  • the method described is of course also for replacing the work rolls 5a, 5b of the rolling unit 1, as well as applicable to rolling mills with more than two successive rolling units.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Paper (AREA)
  • Moulding By Coating Moulds (AREA)

Claims (13)

  1. Procédé pour prolonger le cycle de coulée lors de la coulée à deux cylindres d'un feuillard, comprenant des cylindres en ligne pour le feuillard d'acier, lequel est laminé dans au moins une unité de laminage (1, 2) d'un laminoir avec des cylindres de travail (5a, 5b, 6a, 6b) interchangeables,
    caractérisé en ce que
    les cylindres de travail (5a, 5b ; 6a, 6b) interchangeables sont échangés pendant la coulée de façon à pouvoir être extraits au-dessous ou au-dessus du feuillard d'acier (23) ainsi que latéralement hors de l'unité de laminage (1, 2).
  2. Procédé selon la revendication 1,
    caractérisé en ce que, dans le cas de deux unités de laminage successives (1, 2), pendant l'échange des cylindres de l'unité de laminage (2), on engendre avec les cylindres de travail (5a, 5b) de l'autre unité de laminage (1) qui se trouve en service, une épaisseur de feuillard plus importante qu'avant l'échange des cylindres.
  3. Procédé selon la revendication 1,
    caractérisé en ce que, dans le cas de deux unités de laminage successives (1, 2), pendant l'échange des cylindres de l'unité de laminage (2), on engendre avec les cylindres de travail (5a, 5b) de l'autre unité de laminage (1) qui se trouve en service, sans transition la même épaisseur de feuillard qu'avant l'échange des cylindres, lesquels reprennent alors la totalité du taux de réduction des deux unités de laminage (1,2).
  4. Procédé selon la revendication 3,
    caractérisé en ce que, avec les cylindres de travail (5a, 5b) de l'unité de laminage (1) qui se trouve en service, on procède tout d'abord à une approche de l'épaisseur de feuillard respectivement parcourue, avant de détendre les cylindres de travail (6a, 6b) à échanger.
  5. Procédé selon la revendication 3 ou 4,
    caractérisé en ce que, pendant l'échange des cylindres, les paramètres qui influencent de façon déterminante l'épaisseur de coulée pendant le processus de coulée, comme la vitesse de coulée et/ou la hauteur du niveau du bain et/ou l'évacuation de chaleur et/ou la température de l'acier liquide introduit, sont modifiés dans le sens d'une assistance à l'unité de laminage (1) qui se trouve en service.
  6. Installation pour la mise en oeuvre du procédé selon l'une des revendications 1 à 5, dans laquelle au moins une unité de laminage (1), de préférence deux unités de laminage successives (1, 2) est/sont dotée(s) de cylindres de travail (5a, 5b, 6a, 6b) interchangeables au-dessus ou au-dessous du feuillard d'acier (23),
    caractérisée en ce que les cylindres de travail (5a, 5b, 6a, 6b) sont susceptibles d'être soulevés depuis le feuillard d'acier (23) au moyen de dispositifs de levage (17) est susceptibles d'être extraits latéralement.
  7. Installation selon la revendication 6,
    caractérisée en ce que les cylindres de travail (5a, 5b, 6a, 6b) sont susceptibles d'être soulevés par les dispositifs de levage (17), et le laminoir est doté de rouleaux de levage (24, 25) pour le feuillard d'acier (23) devant et derrière les cylindres de travail.
  8. Installation selon la revendication 7,
    caractérisée en ce que les rouleaux de levage (24, 25) sont agencés à l'extrémité libre de leviers pivotants (26, 27).
  9. Installation selon la revendication 7 ou 8,
    caractérisée en ce que le cylindre de travail supérieur (5a, 6a) est susceptible d'être soulevé conjointement avec le rouleau de soutien (7a, 8a) qui lui est associé.
  10. Installation selon l'une des revendications 6 à 9,
    caractérisée en ce que les cylindres de travail (5a, 5b, 6a, 6b) sont susceptibles d'être soutenu sur des guidages (13, 14, 15, 16) entraînés conjointement et/ou susceptibles d'être pivotés vers l'intérieur et vers l'extérieur.
  11. Installation selon l'une des revendications 6 à 10,
    caractérisée en ce que les cylindres de travail (5a, 5b, 6a, 6b) sont interchangeables individuellement ou par paires.
  12. Installation selon la revendication 11,
    caractérisée en ce que les cylindres de travail (5a, 5b, 6a, 6b) interchangeables par paires sont dotés d'un dispositif d'extraction commun.
  13. Installation selon l'une des revendications précédentes,
    caractérisée en ce que le cylindre de travail supérieur (5a, 6a) est susceptible d'être soulevé conjointement avec le rouleau de soutien supérieur (7a, 8a) qui lui est associé, et/ou en ce que le cylindre de travail inférieur (5b, 6b) est susceptible d'être abaissé conjointement avec le rouleau de soutien inférieur (7b, 8b) qui lui est associé.
EP04764123A 2003-08-13 2004-08-13 Procede pour prolonger le cycle de coulee lors de la coulee a deux cylindres d'un feuillard et installation pour la mise en oeuvre dudit procede Active EP1654076B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01398/03A CH696521A5 (de) 2003-08-13 2003-08-13 Verfahren zur Verlängerung des Giesszyklus beim Zweirollen-Bandgiessen sowie Anlage zur Durchführung des Verfahrens.
PCT/EP2004/009129 WO2005018843A1 (fr) 2003-08-13 2004-08-13 Procede pour prolonger le cycle de coulee lors de la coulee a deux cylindres d'un feuillard et installation pour la mise en oeuvre dudit procede

Publications (2)

Publication Number Publication Date
EP1654076A1 EP1654076A1 (fr) 2006-05-10
EP1654076B1 true EP1654076B1 (fr) 2007-10-24

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ID=34200979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04764123A Active EP1654076B1 (fr) 2003-08-13 2004-08-13 Procede pour prolonger le cycle de coulee lors de la coulee a deux cylindres d'un feuillard et installation pour la mise en oeuvre dudit procede

Country Status (12)

Country Link
US (1) US7740052B2 (fr)
EP (1) EP1654076B1 (fr)
JP (1) JP4542099B2 (fr)
CN (1) CN100553812C (fr)
AT (1) ATE376460T1 (fr)
BR (1) BRPI0413548A (fr)
CA (1) CA2535615C (fr)
CH (1) CH696521A5 (fr)
DE (1) DE502004005331D1 (fr)
RU (1) RU2338606C2 (fr)
UA (1) UA86032C2 (fr)
WO (1) WO2005018843A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006019514B3 (de) * 2006-04-27 2007-09-27 Sms Meer Gmbh Walzgerüst
CN102962262B (zh) * 2011-09-02 2014-11-05 鞍钢股份有限公司 一种避免工作辊走行轮损坏的换辊方法
KR101673860B1 (ko) * 2014-12-30 2016-11-09 포스코강판 주식회사 필름 라미네이팅 장치 및 이를 이용한 라미네이트 판재의 제조방법

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT361649B (de) * 1979-06-28 1981-03-25 Voest Alpine Ag Stuetz- und fuehrungsgeruest fuer stranggiess- anlagen
AT362541B (de) * 1979-07-25 1981-05-25 Voest Alpine Ag Vorrichtung zum austausch von stuetz- oder treibrollen einer stranggiessanlage
WO1995026840A1 (fr) * 1994-04-04 1995-10-12 Nippon Steel Corporation Procede de coulee en continu a double rouleaux et dispositif afferent
JP3067589B2 (ja) * 1995-06-02 2000-07-17 株式会社日立製作所 噛み込み補助装置を備えた小径作業ロール熱間圧延機
DE19540978A1 (de) * 1995-11-03 1997-05-07 Schloemann Siemag Ag Produktionsanlage zum kontinuierlichen- oder diskontinuierlichen Auswalzen von Warmband
DE10163373C1 (de) 2001-12-22 2003-02-27 Masch Und Werkzeugbau Gmbh Verfahren zum Wechsel von Arbeitswalzen in einem Walzgerüst

Also Published As

Publication number Publication date
WO2005018843A1 (fr) 2005-03-03
RU2338606C2 (ru) 2008-11-20
BRPI0413548A (pt) 2006-10-17
JP2007501713A (ja) 2007-02-01
CA2535615C (fr) 2011-03-29
US7740052B2 (en) 2010-06-22
US20070187065A1 (en) 2007-08-16
CH696521A5 (de) 2007-07-31
DE502004005331D1 (de) 2007-12-06
UA86032C2 (ru) 2009-03-25
EP1654076A1 (fr) 2006-05-10
ATE376460T1 (de) 2007-11-15
CN1835813A (zh) 2006-09-20
JP4542099B2 (ja) 2010-09-08
RU2006107532A (ru) 2006-07-10
CA2535615A1 (fr) 2005-03-03
CN100553812C (zh) 2009-10-28

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