EP0028686B1 - Dispositif pour le refroidissement, notamment de barres de lingot et de billette - Google Patents

Dispositif pour le refroidissement, notamment de barres de lingot et de billette Download PDF

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Publication number
EP0028686B1
EP0028686B1 EP80105422A EP80105422A EP0028686B1 EP 0028686 B1 EP0028686 B1 EP 0028686B1 EP 80105422 A EP80105422 A EP 80105422A EP 80105422 A EP80105422 A EP 80105422A EP 0028686 B1 EP0028686 B1 EP 0028686B1
Authority
EP
European Patent Office
Prior art keywords
strand
spraying
beams
spray
tubes
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
Application number
EP80105422A
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German (de)
English (en)
Other versions
EP0028686A1 (fr
Inventor
Willi Dipl.-Ing. Wrossok
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.)
MDS Mannesmann Demag Sack GmbH
Original Assignee
MDS Mannesmann Demag Sack GmbH
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 MDS Mannesmann Demag Sack GmbH filed Critical MDS Mannesmann Demag Sack GmbH
Priority to AT80105422T priority Critical patent/ATE5462T1/de
Publication of EP0028686A1 publication Critical patent/EP0028686A1/fr
Application granted granted Critical
Publication of EP0028686B1 publication Critical patent/EP0028686B1/fr
Expired legal-status Critical Current

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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
    • B22D11/1246—Nozzles; Spray heads

Definitions

  • the invention relates to an adjusting device for so-called spray bars running along the surface of a strand of a continuous casting installation as a carrier for spray tubes directed at the surfaces for applying a cooling medium to the surfaces, e.g. B. water, according to the preamble of claim 1 and is thus based on DE-B1-2 636 666.
  • a cooling medium e.g. B. water
  • the primary solidification of the strand takes place in the mold, which is followed by the secondary cooling and a residual cooling section.
  • the first crystals solidify in the mold and form a thin strand shell or strand skin, which is further developed in the course of secondary cooling by applying a coolant (water, steam, water-air mixture, air) and the associated removal of heat until it has completely solidified.
  • a coolant water, steam, water-air mixture, air
  • the most common coolant namely water, is sprayed onto the free surfaces of the strand between the support elements of the strand guide by means of spray nozzles.
  • the known adjusting device is not suitable for ensuring that it functions reliably. It must be borne in mind that continuous casting plants are provided with a closed cooling chamber encompassing the entire area of the spray cooling in the curved course of the strand guide. The conditions in the cooling chamber during the casting operation are characterized by the cooling water sprayed onto the hot strand. There is a wet steam mixture that has a temperature of approx. 80 to 100 ° Celsius in the area of the roller guide. The non-evaporated cooling water heated by the hot strand overflows all components and leaves deposits on the surfaces of the components due to the pouring powder and the washed-off scale. These conditions lead to considerable damage and impairment of the spindle adjustment device and cause the spindle adjustment to fail within a very short time.
  • the invention uses a handlebar system according to DE-B1-2636666, by means of which individual spray tubes can be adjusted “parallel to themselves” in such a way that a larger distance from the surface of the strand is set with a displacement of the spray tubes outwards for a larger strand width. Since the spray tubes can be adjusted transversely to the longitudinal axis of the strand, a plurality of parallelogram handlebar systems with an adjustment drive via nut and spindle are required over the entire length of the strand guide. The same applies to handlebar systems based on the "Nuremberg Scissors" principle according to US-A-4 031 946.
  • the known adjustment devices can also be used for spray bars which, according to DE-A-1 936 306, extend in the longitudinal direction of the strand axis.
  • two parallelogram handlebar systems or two Nuremberg scissors with adjustment drives via nut and spindle would always be required for each spray bar, which does not eliminate the susceptibility of the continuous caster to failure.
  • the use of these systems for spraying the side surfaces of the strand would further increase the susceptibility to faults.
  • the object of the invention is to improve the operational safety of a continuous casting installation and to provide an adjustment device for the spray bars of a continuous casting installation which is free of faults, simple and which can be used in the same way for lateral spraying bars which are assigned to a continuous surface, the center of which shifts with changing width of the strand surface, especially for block and billet continuous casting plants.
  • this object is achieved in that all the spray bars arranged on the four sides of the strand and extending along the surface of the strand are supported by at least two steering levers such that the spray bars move in the direction of the longitudinal axis of the strand when the distance changes the steering levers of the lateral spray bars, which are assigned to a strand surface, the center of which shifts with changing width of the strand surface, can be pivoted in inclined planes which form an acute angle with the respective spray plane running perpendicularly to the assigned strand surface through the spray tubes, such that with the Change in distance of the spray bars is accompanied by a transverse displacement of the spray bars together with the spray pipes relative to the longitudinal axis of the strand.
  • the invention uses the same, simple and robust handlebar system for all four circumferentially distributed spray bars or spray bar zones, which manages with two links per spray bar, because their swivel plane is transverse to the assigned strand surface or - for the side spray bars - around the acute angle from the transverse plane deviates.
  • the invention makes it possible to provide long spray bars which extend over the entire area of the secondary cooling and can only be adjusted to changing distances from the assigned strand surface by means of an adjusting lever, which can also be one of the two steering levers.
  • the adjusting levers are pivoted by an operator or mechanically, in a very simple manner until a hole in the adjusting lever, which is provided with several holes defining the spacing of the spray bar for each individual strand format in accordance with the strand formats to be cast, a correspondence hole of the Strand guide structure is opposite.
  • a bolt By inserting a bolt into the holes, the pre-selected distance of the spray bars with the spray nozzles to the strand surface is reached in a very short time without any further adjustment activity.
  • the same simple adjustment option is also available for the side spray bars, which, due to the oblique arrangement of the steering levers at an acute angle to the strand surface, adjust themselves to the center of the strand format when changing the distance, since they still move transversely to the strand longitudinal axis when moving in the strand longitudinal axis run so that the edge areas of the strand can remain unaffected by the water, which is desirable, and the spray tubes are in the middle of the strand. A center-oriented change in distance has thus been achieved for the side spray bars.
  • continuous spray bars extending over the entire secondary cooling section of a continuous casting installation are further provided that the spray tubes carried by the spray bars increasingly have a shorter distance from the strand surface in the direction of the strand feed.
  • the secondary cooling section of a continuous caster can be divided into cooling zones, which can be switched independently of one another taking into account the steel quality to be cast, although it may well be the case that spray cooling is no longer necessary in the lowest cooling zone (s) and this zone is therefore switched off can be. It is certainly no longer necessary to apply cooling water to the strand in the lowest cooling zones, where it has become more and more solidified, and is sometimes harmful.
  • the spray tubes of different lengths take this fact into account.
  • the shorter spray tubes at the beginning of the cooling section with a predominantly liquid strand core enable a z. B. 80% exposure to the strand surface, while in the lower cooling area the spray angle is significantly narrowed by the longer spray tubes with a smaller distance to the strand surface, so that here z. B. there is only a 40% exposure to the strand area.
  • steel flows from an intermediate container (not shown) into a continuous casting mold or chill mold 2.
  • the chill mold 2 is followed by the strand guide frame 3, which comprises the strand 4 already solidified below the mold in the edge zones with the support rollers 3a arranged in the strand guide frame leads and transferred into the circular arc of the continuous caster.
  • the strand With the exit from the mold 2, where the strand 4 is primarily cooled, the strand reaches the part of the continuous casting plant referred to as the secondary cooling section.
  • the secondary cooling section During its passage through the support rollers 3a of the cooling section, heat is extracted from the strand 4 by water sprayed on by means of spray tubes or nozzles 6.
  • spray bars 7, 8, 9, 10 extending over the entire length of the secondary cooling section are provided on the top and bottom of the strand as well as on the two other sides of the strand.
  • the secondary cooling section can also be divided into cooling zones 5.
  • the spray bars carry a large number of spray tubes 6, which must always be centered on the strand 4.
  • each spray bar 7, 8, 9, 10 which have a connection to a water supply via lines not shown, are connected to the strand guide or back-up roll stand 3 via a plurality of steering levers 12, 12 'pivotably mounted by means of bolts 11 in the manner of a parallelogram steering system .
  • each spray bar can be changed in its distance from the strand surface by means of a pivotable adjusting lever 14, as is the case in FIG. 1 for the spray bar 7 on the underside of the strand and for the spray bar 9 on the top of the strand with the spray bar positions 7 ′ removed from the strand 4. , 9 'is shown.
  • the spray tubes 6 With increasing solidification of the strand 4, the spray tubes 6 have a greater length, so that the distance A of the spray tubes to the strand surface in the lower region of the strand guide is less than the distance A 'in the upper part of the strand guide. This measure makes it possible to reduce the spray angle and thus the cooling surface S acted on the strand surface with increasing solidification of the strand.
  • the lateral steering levers 12 are pivotally arranged in an inclined plane E which extends at a certain angle x obliquely to the spray tube plane F running perpendicular to the assigned strand surface.
  • the side spray bars 8, 10, as shown in Fig. 2 in full lines are set closely, and the spray tubes 6 are only a small distance from the strand surface, which is designed so that the spray cone with the Base area S does not cover the edge areas of the strand.
  • the dashed lines 8, 10 with the spray tubes 6 shown in broken lines are far from the surface of the strand, with the proviso that although the enlarged strand area is sufficient, the edge regions of the strand are again not water be charged.
  • the spray bars 8, 10 in addition to the positioning movement inevitably involve an additional movement transverse to the longitudinal axis of the strand, i.e. H. in the direction of the change in thickness, in order to be newly aligned with the center of the other strand format, which is achieved by the inclined plane E, in which the steering levers 12 'pivot simultaneously with the change in distance.
  • the device according to the invention to carry out a time-saving setting of all spray tubes solely by bringing the adjusting lever 14 assigned to each spray bar and thus all steering levers) 12 and 12 'into a pivot position corresponding to the relevant strand format, previously identified and be fixed there.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (3)

1. Dispositif de réglage de poutres d'arrosage (7,8,9,10) s'étendant le long de la surface d'une barre coulée dans une installation de coulée continue, ladite poutre d'arrosage se présentant sous la forme d'un support d'une série de tubulures d'arrosage (6) dirigées vers la surface de la barre afin d'arroser cette surface d'un fluide de refroidissement, ce dispositif étant pourvu de moyens pour faire varier la distance relative entre la poutre d'arrosage et la barre (4) en fonction de la largeur variable de la surface de la barre, les poutres d'arrosage étant déplaçables, à cet effet, parallèlement à elles- mëmes, au moins par zones, à l'aide d'un jeu de leviers de réglage, caractérisé par le fait que les poutres d'arrosage (7, 8, 9, 10), placées sur les quatre côtés de la barre (4', 4") et s'étendant le long de la surface de la barre, sont supportées par au moins deux leviers de réglage articulés (12,12') de telle sorte que les poutres d'arrosage se déplacent, lors du changement de distance, selon la direction de l'axe longitudinal de la barre, les leviers de réglage (12') des poutres d'arrosage (8, 10) latérales qui sont affectées à une certaine surface de la barre dont le milieu se trouve ëtre décalé lorsque la largeur (H) de la surface change, étant montés de telle façon qu'ils puissent se déplacer dans un plan oblique (E) qui forme un angle aigu (a) avec le plan d'arrosage (F) passant par les tubulures d'arrosage (6) et perpendiculaire à la surface de la barre afférente, de sorte que, lors de la variation de l'écartement de la poutre d'arrosage (8; 10), il se produise également un coulissement transversal de cette poutre d'arrosage, donc des tubulures d'arrosage, par rapport à l'axe longitudinal de la barre.
2. Dispositif suivant la revendication 1, comportant des poutres d'arrosage (7, 8, 9; 10) s'étendant sur toute la longueur du tronçon de refroidissement secondaire d'une installation de coulée continue, caractérisé en ce que les tubulures d'arrosage (6) portées par les poutres d'arrosage (8, 10) sont placées à une distance, par rapport à la surface de la barre, qui va en diminuant dans le sens du déplacement de la barre.
3. Dispositif suivant l'une quelconque des revendications 1 ou 2 caractérisé en ce que l'un des leviers de réglage articulés (12, 12') d'une poutre d'arrosage (7, 8, 9, 10) est prolongé par un levier commun (14) de réglage.
EP80105422A 1979-09-28 1980-09-11 Dispositif pour le refroidissement, notamment de barres de lingot et de billette Expired EP0028686B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80105422T ATE5462T1 (de) 1979-09-28 1980-09-11 Vorrichtung zum kuehlen von insbesondere blockund knueppelstraengen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2939322 1979-09-28
DE2939322A DE2939322C2 (de) 1979-09-28 1979-09-28 Vorrichtung zur Änderung des Abstandes von Spritzbalken einer Stranggießanlage

Publications (2)

Publication Number Publication Date
EP0028686A1 EP0028686A1 (fr) 1981-05-20
EP0028686B1 true EP0028686B1 (fr) 1983-11-30

Family

ID=6082107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80105422A Expired EP0028686B1 (fr) 1979-09-28 1980-09-11 Dispositif pour le refroidissement, notamment de barres de lingot et de billette

Country Status (6)

Country Link
US (1) US4476914A (fr)
EP (1) EP0028686B1 (fr)
JP (1) JPS5656768A (fr)
AT (1) ATE5462T1 (fr)
DE (1) DE2939322C2 (fr)
ES (1) ES495097A0 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009005679A1 (de) 2009-01-22 2010-07-29 Sms Siemag Aktiengesellschaft Stranggießanlage mit Spritzdüsenanordnung

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5985350A (ja) * 1982-11-05 1984-05-17 Nippon Steel Corp 連続鋳造設備
US4567934A (en) * 1983-02-28 1986-02-04 Kabushiki Kaisha Kobe Seiko Sho Cooling mechanism for use in continuous metal casting
US5212210A (en) * 1992-03-18 1993-05-18 Minnesota Mining And Manufacturing Company Energy curable compositions having improved cure speeds
US6264767B1 (en) 1995-06-07 2001-07-24 Ipsco Enterprises Inc. Method of producing martensite-or bainite-rich steel using steckel mill and controlled cooling
DE19702718C1 (de) * 1997-01-15 1998-10-01 Mannesmann Ag Verfahren und Vorrichtung zur Kühlmediumsteuerung bei einer Stranggießanlage
WO2000003042A1 (fr) 1998-07-10 2000-01-20 Ipsco Inc. Procede et appareil de production d'acier riche en martensite ou bainite au moyen d'un laminoir de type steckel et de refroidissement regule
DE10133093A1 (de) * 2000-08-10 2002-02-21 Sms Demag Ag Verfahren und Strangführung zum Stützen, Führen und Kühlen von Gießsträngen aus Stahl, insbesondere von Vorprofilen für Träger
DE10054750A1 (de) * 2000-11-04 2002-05-08 Sms Demag Ag Strangführung einer Stranggießanlage mit einer Einrichtung zur Sekundärkühlung
AT503526B1 (de) * 2006-04-25 2008-07-15 Voest Alpine Ind Anlagen Spritzdüsen-verstelleinrichtung
WO2020064451A1 (fr) 2018-09-25 2020-04-02 Primetals Technologies Austria GmbH Support à galets pourvu de dispositifs de retenue pour la fixation de barres de pulvérisation de zone intermédiaire
CN109396372B (zh) * 2018-12-28 2024-02-06 中冶京诚工程技术有限公司 多断面方圆坯连铸机二冷喷淋快换装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2726430A (en) * 1952-11-18 1955-12-13 Continuous Metalcast Co Inc Method and apparatus for preventing warping of continuously cast metal
DE1936306A1 (de) * 1969-07-17 1971-01-28 Demag Ag Verfahren und Vorrichtung zum Kuehlen von breiten Giessstraengen aus Metall,insbesondere aus Stahl
DE2143962C3 (de) * 1971-09-02 1975-09-04 Concast Ag, Zuerich (Schweiz) Verfahren und Vorrichtung zum Kühlen mittels Sprühdüsen und Führen eines Stranges in der Sekundärkühlzone einer Stranggießanlage
AT323921B (de) * 1973-07-27 1975-08-11 Voest Ag Kuhleinrichtung für kontinuierlich zu giessende stränge
AT332014B (de) * 1973-08-21 1976-09-10 Voest Ag Stranggiessanlage
CH572370A5 (fr) * 1974-02-28 1976-02-13 Concast Ag
AT332582B (de) * 1975-02-17 1976-10-11 Voest Ag Stranggiessanlage fur brammen
JPS5252894U (fr) * 1975-10-14 1977-04-15
DE2636666C2 (de) * 1976-08-14 1978-06-29 Demag Ag, 4100 Duisburg Spritzdüsen-Anordnung für Metall-, insbesondere für StahlstranggieBanlagen für extrem breite Stahlbrammen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009005679A1 (de) 2009-01-22 2010-07-29 Sms Siemag Aktiengesellschaft Stranggießanlage mit Spritzdüsenanordnung

Also Published As

Publication number Publication date
ATE5462T1 (de) 1983-12-15
EP0028686A1 (fr) 1981-05-20
ES8105597A1 (es) 1981-06-16
JPS5656768A (en) 1981-05-18
ES495097A0 (es) 1981-06-16
US4476914A (en) 1984-10-16
DE2939322C2 (de) 1986-09-11
DE2939322A1 (de) 1981-04-16

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