EP1337365B1 - Systeme de guidage de coulee continue d'une installation de coulee continue comprenant un dispositif de refroidissement secondaire - Google Patents

Systeme de guidage de coulee continue d'une installation de coulee continue comprenant un dispositif de refroidissement secondaire Download PDF

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Publication number
EP1337365B1
EP1337365B1 EP01992622A EP01992622A EP1337365B1 EP 1337365 B1 EP1337365 B1 EP 1337365B1 EP 01992622 A EP01992622 A EP 01992622A EP 01992622 A EP01992622 A EP 01992622A EP 1337365 B1 EP1337365 B1 EP 1337365B1
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EP
European Patent Office
Prior art keywords
cooling
billet
guide
strand
cast
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.)
Expired - Lifetime
Application number
EP01992622A
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German (de)
English (en)
Other versions
EP1337365A1 (fr
Inventor
Joachim Schwellenbach
Hans Streubel
Günter KNEPPE
Klaus-Peter Eberwein
Karl Hoen
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 Demag AG
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Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1337365A1 publication Critical patent/EP1337365A1/fr
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Publication of EP1337365B1 publication Critical patent/EP1337365B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling

Definitions

  • the invention relates to a strand guide of a continuous caster, comprising below a mold for guiding elements equipped with guide rollers for support and guiding a cast strand, as well as one referred to as secondary cooling Device for supplying the cast strand with coolant in different zones Cooling intensity, usually with water, by means of against the guide rollers and / or the cast strand of directed spray nozzles.
  • An essential task of the above-mentioned strand guidance is to act on it of the cast strand in the area between the support elements to continuously withdraw heat from a coolant and thereby freeze of the still liquid core of the cast strand.
  • State of the art is the device, which is called secondary cooling, through a pipe system build with which coolant is distributed in a predetermined manner and is sprayed onto the slab.
  • Strand guides with integrated means for continuous cooling of the cast strand are known.
  • Document EP 0 642 857 A2 describes a continuous caster, whose strand guide segments with the variably adjustable Width of the strand distributed, in the strand running direction, if necessary in Cooling zones divided spray elements connected to cross-distributor pipes, especially battens are provided.
  • the going beyond the minimum strand width arranged, outer spray battens are dependent on the respective String width, can be switched on or off.
  • U.S. Patent 4,220,192 describes a combination of a bearing arrangement for rollers with a spray system for coolant to be arranged at the floor outlet a continuous casting mold with at least one pair on horizontal axes arranged rollers which grip the strand emerging from the mold and lead.
  • the bearing arrangement is designed with an elongated passage, in which cooling water flows. The water flows across a multitude directional passages that are formed in the bearing assembly and with nozzle ends are provided, which are aligned so that cooling water above and below the rolls and flows against the adjacent surface of the cast strand and this cools. The splash water also cools the inside of the bearing assembly Flow through the passages, thus preventing deformation and warping the aligned rollers and nozzles.
  • the document EP 0 028 686 B1 describes an adjustment device for along so-called extending the surface of a strand of a continuous caster Spray bars as supports for spray pipes directed at the surfaces to be applied the surfaces with a cooling medium, e.g. B. water.
  • a cooling medium e.g. B. water.
  • the spray bars are all arranged on the four sides of the strand and spray bars extending along the surface of the strand worn at least two steering levers, such that the spray bars at Move the change in distance in the direction of the longitudinal axis of the strand.
  • the Steering lever of the side spray bar which is assigned to a strand surface are, the center of which shifts with changing width of the strand surface, in Inclined swiveling.
  • Document DE 30 39 443 A1 discloses a spray nozzle arrangement in the Secondary cooling of a continuous steel caster, with at least two across spray nozzles arranged side by side to adjust the distance from the strand surface and their mutual distance their leads are attached to holders that are articulated on adjusting levers and are straightforward.
  • Two fixed, opposite Adjusting levers are provided with a push rod in the manner of an anti-parallel crank opposite movement transmission and connected to the adjustment levers hinged holders are guided parallel to the strand surface.
  • Document DE 197 02 718 C1 discloses a method and an apparatus for cooling medium control in a continuous caster.
  • a cooling zone can be switched on and off.
  • Spray battens selectively selected and at least two spray groups summarized. If the system pressure for the The individual groups are alternately in a fixed cooling medium Time interval can be switched on and off.
  • a device for performing the method includes below the continuous casting mold in a provided with guide rollers Cooling section parallel to the guide rollers at a distance from each other arranged spray slats, each having a spray nozzle at the open end.
  • a control valve is arranged for groups of spray pipes carrying spray bars.
  • the control valve is time-controllable and at a system pressure of the Cooling medium designed responsive.
  • the object of the invention an uncomplicated basis for the continuous routing of a continuous caster and appropriate combination of the support and management function with an effective one Cooling of the strand in a particularly compact structure of the guide elements to realize.
  • the secondary cooling is designed with cooling boxes, which preferably along the strand guide are divided into separate chambers, the cooling boxes are integrated into the structure of the guide elements.
  • the guide elements achieve a compact and uncomplicated building structure, the ideal conditions for the different tasks, namely Strand guidance and strand cooling, results.
  • the section of a continuous caster shown in Fig. 1 comprises the pouring tube 15 from a tundish, not shown, into a continuous casting mold 1 vertical flow direction.
  • Under the mold 1 are two guide elements as an example 3, 3 ', each with four pairs of guide rollers 2 Is provided.
  • the cast strand 4 is between the guide roller pairs 2 supported and guided.
  • FIG. 2 shows below the mold 1 is equipped with guide rollers 2, 2 'guide element 3 for Supporting and guiding the cast strand 4.
  • the strand guiding element 3 is in on known manner for the frictional application of the guide rollers 2, 2 ' formed with a fixed side 17 and a loose side 17 ', which is why not here the known construction will be discussed further.
  • the secondary cooling is after the essential feature of the invention with crossbeams as cooling boxes 6, 6 'formed along the strand guide according to their predetermined Classification with zones of different cooling intensity in separate chambers 7, 7 'are divided.
  • the nozzle tubes 10 with the connection points of the cooling boxes are very advantageous 6, 6 'can be connected or disconnected from them by quick disconnect couplings 11.
  • the Nozzles 9 with the nozzle tubes 10 by quick disconnect couplings are connectable or separable from them.
  • the water supply lines 12 can each be individually equipped with shut-off devices 13 be equipped if this is for the design of a changing production program appears necessary.
  • the water supply lines 12 are each connected to a water supply pipe 14, which is connected to a central water supply 19.
  • the individual chambers 7, 7 'of the cooling boxes 6, 6' depending on Width of the cast strand can be switched on and off. This is the one with coolers 6, 6 'trained secondary cooling in adaptation to the respective Geometry of a cast strand can be flexibly adjusted.
  • the guide element 3 is the above-described structural structure of a guide element 3 for supporting and guiding a cast strand 4 in the direction of view thereof Narrow side shown in longitudinal section.
  • the recognizable building structure includes an outer frame corresponding to the broad side of the cast strand 4th parallel trusses 20.
  • the illustration shows the extremely advantageous Integration of the cooling boxes 6 in connection with the cross members 16 and the attached to these broadside cross members 20.
  • the guide element 3 has in a known arrangement narrow side parts with the fixed side part 17 and Loss side part 17 'in a known assignment with means not shown for merging or unfolding in the open position shown 3. In this position, cooling water 5 can carry individual Chambers 7, 7 'can be formed continuously from top to bottom, wherein then adjacent chambers, for example in the area of a narrow cast strand 4 can be switched off zone by zone, as shown in FIG. 2.
  • Nozzles 9 to the guide rollers 2 and to the cast strand 4 3 shows the particularly compact and expedient integration of the cooling boxes 6 in the structure of a guide element 3 can be seen.
  • FIG. 4 A somewhat different design of a guide element 3 is shown in FIG. 4 the cooling boxes with the help of fasteners 8, 8 'on the structure of the Guide elements 3 attached from the outside.
  • the illustration shows the fixed side part 17 and the loose part 17 'with the outside arranged cooling boxes 6, 6 '. As previously in FIG. 2 shown, also with side cooling chamber parts 7 from the middle cooling chamber part 7 'can be switched off.
  • FIG. 3 The illustration shows the basic concept of nozzle pipes 10 with attached nozzles 9 when spraying the guide rollers 2, 2 'with water spray jets.
  • the broadside trusses are shown in FIG. 3 with the Reference number 20 marked.
  • the building structure according to FIG. 4 is suitable, for example, for retrofitting an existing one Guide element with a particularly intensive water cooling system for cast strands with variable thickness.
  • the width of the middle chamber 7 ' can be correspondingly larger be designed in comparison to the side chambers.
  • the bearings for the guide rollers 2 are with the cross members 16 connected. This results in a stable and torsion-resistant design.
  • FIG. 5 shows a somewhat different design of FIG. 2.
  • cooling boxes 6, 6 ', 6 "on each side 17 and 17' are in pairs the water supply pipes 14, 14 'can be connected, and the middle cooling boxes 6, 6' arranged to be connected to a central water supply 19, 19 '.
  • Loose part 17 'and fixed part 17 of the guide element 3 are by (not shown) Power means in mutual distance according to the thickness of a strand 4 adjustable against each other.
  • the cooling boxes 6, 6 ' are in the central area through an opening in each central area Crossbar 18, 18 'in communication with each other and on the central water supply 19, 19 'connected.
  • Figure 6 shows a construction of the guide element 3 similar to Figure 3, however with simplified equipment and arrangement of the cross members 16 for support the walls 22, 22 'of the cooling boxes 6. These are to the central water supply 19, 19 'connected via throttle bodies 21, 21'.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Claims (4)

  1. Guidage de coulée continue d'une installation de coulée continue, comprenant, en dessous d'une lingotière (1), des éléments de guidage (3) équipés notamment de rouleaux de guidage (2, 2') pour le soutien et le guidage d'une barre de fonte (4) ainsi qu'un dispositif désigné comme refroidissement secondaire servant à envoyer du refroidisseur, en règle générale de l'eau, sur la barre de fonte (4) dans les zones d'intensité de refroidissement différente, au moyen de buses d'aspersion (5) orientées vers les rouleaux de guidage (2, 2') et/ou la barre de fonte (4), caractérisé en ce que le refroidissement secondaire est constitué par des boítes de refroidissement (6, 6') qui sont de préférence divisées en chambres séparées (7, 7') le long du guidage de coulée continue, les boítes de refroidissement (6, 6') étant intégrés dans la structure de construction des éléments de guidage (3).
  2. Guidage de coulée continue selon la revendication 1, caractérisé en ce que sont disposés, pour servir de moyens de distribution pour le refroidisseur, sur le côté des boítes de refroidissement (6, 6) tourné vers la barre de fonte (4), des tuyaux gicleurs (10) équipés de buses (9).
  3. Guidage de coulée continue selon la revendication 1 ou 2, caractérisé en ce que, lors de la répartition des boítes de refroidissement (6), dans le sens de la largeur de la barre de fonte (4), en chambres séparées (7), la plus grande largeur est associée à la chambre centrale (7') en fonction d'exigences différentes au niveau de l'intensité de refroidissement.
  4. Guidage de coulée continue selon l'une quelconque ou plusieurs des revendications 1 à 3, caractérisé en ce que, lors de la répartition en largeur des chambres séparées (7, 7'), au moins les chambres respectivement extérieures (7) sont raccordées par des canalisations d'alimentation en eau (12, 12') séparées dotées d'organes d'arrêt intégrés (13) à un tuyau d'alimentation en eau sous pression (14).
EP01992622A 2000-11-04 2001-10-23 Systeme de guidage de coulee continue d'une installation de coulee continue comprenant un dispositif de refroidissement secondaire Expired - Lifetime EP1337365B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10054750A DE10054750A1 (de) 2000-11-04 2000-11-04 Strangführung einer Stranggießanlage mit einer Einrichtung zur Sekundärkühlung
DE10054750 2000-11-04
PCT/EP2001/012203 WO2002036291A1 (fr) 2000-11-04 2001-10-23 Systeme de guidage de coulee continue d'une installation de coulee continue comprenant un dispositif de refroidissement secondaire

Publications (2)

Publication Number Publication Date
EP1337365A1 EP1337365A1 (fr) 2003-08-27
EP1337365B1 true EP1337365B1 (fr) 2004-07-14

Family

ID=7662168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01992622A Expired - Lifetime EP1337365B1 (fr) 2000-11-04 2001-10-23 Systeme de guidage de coulee continue d'une installation de coulee continue comprenant un dispositif de refroidissement secondaire

Country Status (4)

Country Link
EP (1) EP1337365B1 (fr)
AU (1) AU2002215968A1 (fr)
DE (2) DE10054750A1 (fr)
WO (1) WO2002036291A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012126184A1 (fr) * 2011-03-24 2012-09-27 中冶京诚工程技术有限公司 Dispositif de coulée combiné du type boîte, refroidi par l'eau, pour ébauche de lingot

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220192A (en) * 1979-05-29 1980-09-02 Gladwin Kirk M Combined roller support and spray cooling system for continuous casting molds
DE2939322C2 (de) * 1979-09-28 1986-09-11 Mannesmann AG, 4000 Düsseldorf Vorrichtung zur Änderung des Abstandes von Spritzbalken einer Stranggießanlage
DE3039443A1 (de) * 1980-10-18 1982-05-27 Schloemann-Siemag AG, 4000 Düsseldorf Sekundaerkuehlung einer stahlstraggiessanlage
DE4328512A1 (de) * 1993-08-25 1995-03-02 Schloemann Siemag Ag Stranggießanlage
DE19702718C1 (de) * 1997-01-15 1998-10-01 Mannesmann Ag Verfahren und Vorrichtung zur Kühlmediumsteuerung bei einer Stranggießanlage

Also Published As

Publication number Publication date
DE50102875D1 (de) 2004-08-19
EP1337365A1 (fr) 2003-08-27
DE10054750A1 (de) 2002-05-08
AU2002215968A1 (en) 2002-05-15
WO2002036291A1 (fr) 2002-05-10

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