EP0028686A1 - 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
EP0028686A1
EP0028686A1 EP80105422A EP80105422A EP0028686A1 EP 0028686 A1 EP0028686 A1 EP 0028686A1 EP 80105422 A EP80105422 A EP 80105422A EP 80105422 A EP80105422 A EP 80105422A EP 0028686 A1 EP0028686 A1 EP 0028686A1
Authority
EP
European Patent Office
Prior art keywords
strand
spray
spray bars
nozzles
bars
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
EP80105422A
Other languages
German (de)
English (en)
Other versions
EP0028686B1 (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
Mannesmann AG
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 Mannesmann AG, MDS Mannesmann Demag Sack GmbH filed Critical Mannesmann AG
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 support for spray tubes or nozzles directed at the surfaces for applying a cooling medium to the surfaces, e.g. Water, to change the distance of the spray bars relative to the strand to adapt to changing strand widths and / or strand thickness.
  • a cooling medium e.g. Water
  • a continuous caster it is known that 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 completely solidifies .
  • 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 is therefore based on the object of improving the operational reliability of a continuous casting installation and of creating an adjustment device for the spray bars of a continuous casting installation which is free of faults and which is simple and quick to handle.
  • the spray bars can be adjusted at least in zones parallel to themselves via two or more steering levers and can be locked at different spacing positions from the surface of the strand.
  • the steering lever guidance between the strand guiding frame and the spray bar is able due to its simplicity and robustness to withstand the adverse conditions described and to ensure the adjustment of the spray bars.
  • the distance to the strand is adjusted by adjusting the levers on the line of the longitudinal axis of the strand.
  • the spray bars which are preferably formed on each cooling side of the strand provided not from a plurality of individual spray bars but from a single continuous spray bar extending over the entire area of the secondary cooling, are assigned pivotable adjusting levers.
  • the pivotable adjusting levers which otherwise act either on a steering lever or on the spray bar itself, can be fixed in their pivoting range in certain pivoting positions.
  • the adjusting lever is pivoted by an operator or mechanically, in a very simple manner, until a hole in the adjusting lever, which is provided with several holes that define the spacing of the spray bar for each individual strand format in accordance with the formats to be cast, is opposite a corresponding hole in the strand guide frame . For example, by engaging a bolt in the bores, 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 spray tubes should be perpendicular to the strand on the middle of the strand, so that the mostly very sensitive types of steel only come into contact with the spray cone in the middle of the strand due to the risk of cracks at the edges, without complex control measures to carry out the nozzle orifices themselves.
  • the spindle adjustment of the spray bars which is known in the case of slab strands, is not suitable on the one hand because of the susceptibility to faults, which - as described - is additionally influenced by the difficult conditions in the cooling chamber of a continuous caster, and on the other hand, no adjustment can be carried out with the device, in addition to the movement to A further adjustment movement deviating therefrom or away from the strand - in this specific case to adapt to different strand centers - is permitted.
  • the spray bars it has hitherto required that the e.g.
  • Spray bars attached to the scaffolding structure by means of bolts or screws had to be brought manually to the respective distance from the surface of the strand and to the new center of the strand using inserts and additional spacers on both sides. Even if several operators are used, the conversion can only be carried out with a considerable amount of time.
  • the invention is therefore also based on the object of avoiding the abovementioned disadvantages and, for spray bars which are assigned to a strand surface, the center of which shifts with changing strand width and / or strand thickness, in particular for block and billet continuous casting plants, a rapid and enable easy center-oriented adjustment of spray bars.
  • the steering levers can be pivoted in inclined planes, which form an acute angle with the respective spray plane running perpendicularly to the assigned strand surface through spray pipes or nozzles form such that with the change in distance of the spray bars a transverse displacement of the spray bars including spray pipes or nozzles takes place relative to the longitudinal axis of the strand.
  • those spray bars that also have to be reset to the middle of the strand format when changing the format perform a movement transverse to the strand longitudinal axis with the movement in the strand longitudinal axis, so that the edge regions of the strand remain unaffected by the water as desired and stand the spray pipes in the middle of the strand.
  • a continuous caster with continuous spray bars extending over the entire secondary cooling section that the spray tubes or the spray nozzles are of different lengths and are increasingly brought closer to the surface of the strand in the lower areas, as seen from the mold.
  • 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, for example, 80% exposure to the strand surface, while in the lower cooling area of the spray angle is substantially restricted by the longer spray tubes with a smaller distance from the surface of the strand, so that here, for example, there is only a 40% exposure to the strand surface.
  • 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 swiveled by means of a swivel
  • the distance between the adjusting bracket 14 and the strand surface can be varied, as is shown in FIG. 1 for the spray bar 7 on the underside of the strand and for the spray bar 9 on the top side of the strand with the spray bar positions 7 ', 9' removed from the strand 4.
  • 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. With this measurement, it is possible to reduce the spray angle and thus the applied cooling surface S on the surface of the strand with increasing solidification of the strand.
  • the side spray bars 8, 10 In addition to the inclination towards the strand or away from it, the side spray bars 8, 10 also have to be adjusted to the middle of the strand so that this can be done without additional manipulations when adjusting, the side steering levers 12 'are in an inclined plane E is arranged pivotably, which extends at a certain angle ⁇ 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 close and the spray tube 6 have 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. 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
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 true EP0028686A1 (fr) 1981-05-20
EP0028686B1 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) ES8105597A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5212210A (en) * 1992-03-18 1993-05-18 Minnesota Mining And Manufacturing Company Energy curable compositions having improved cure speeds
DE19702718C1 (de) * 1997-01-15 1998-10-01 Mannesmann Ag Verfahren und Vorrichtung zur Kühlmediumsteuerung bei einer Stranggießanlage
WO2002036291A1 (fr) * 2000-11-04 2002-05-10 Sms Demag Aktiengesellschaft Systeme de guidage de coulee continue d'une installation de coulee continue comprenant un dispositif de refroidissement secondaire
WO2007121804A1 (fr) * 2006-04-25 2007-11-01 Siemens Vai Metals Technologies Gmbh & Co Dispositif de reglage de buse d'injection

Families Citing this family (8)

* 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
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
CA2332933C (fr) 1998-07-10 2007-11-06 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
DE102009005679A1 (de) 2009-01-22 2010-07-29 Sms Siemag Aktiengesellschaft Stranggießanlage mit Spritzdüsenanordnung
BR112021003900A2 (pt) * 2018-09-25 2021-05-18 Primetals Technologies Austria GmbH suporte de rolo tendo dispositivos de retenção para fixação das barras de aspersão da área intermediária
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2143962B2 (de) * 1971-09-02 1975-01-09 Concast Ag, Zuerich (Schweiz) Verfahren und Vorrichtung zum Kühlen mittels Sprühdüsen und Führen eines Stranges in der Sekundärkühlzone einer StranggieBanlage
DE2435495A1 (de) * 1973-07-27 1975-02-13 Voest Ag Kuehleinrichtung fuer kontinuierlich zu giessende straenge
AT332014B (de) * 1973-08-21 1976-09-10 Voest Ag Stranggiessanlage
AT332582B (de) * 1975-02-17 1976-10-11 Voest Ag Stranggiessanlage fur brammen
DE2207741B2 (de) * 1972-02-18 1977-06-23 Tulskij filial Zentralnowo nautschno-issledowatelskowo institute Tschernoj metallurgii imeni I.P. Bardina, Tula (Sowjetunion) Vorrichtung zum stuetzen und kuehlen eines aus einer runden stranggiesskokille austretenden stranges
DE2636666B1 (de) * 1976-08-14 1977-11-10 Demag Ag Spritzduesen-anordnung fuer metall-, insbesondere fuer stahlstranggiessanlagen fuer extrem breite stahlbrammen

Family Cites Families (4)

* 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
CH572370A5 (fr) * 1974-02-28 1976-02-13 Concast Ag
JPS5252894U (fr) * 1975-10-14 1977-04-15

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2143962B2 (de) * 1971-09-02 1975-01-09 Concast Ag, Zuerich (Schweiz) Verfahren und Vorrichtung zum Kühlen mittels Sprühdüsen und Führen eines Stranges in der Sekundärkühlzone einer StranggieBanlage
DE2207741B2 (de) * 1972-02-18 1977-06-23 Tulskij filial Zentralnowo nautschno-issledowatelskowo institute Tschernoj metallurgii imeni I.P. Bardina, Tula (Sowjetunion) Vorrichtung zum stuetzen und kuehlen eines aus einer runden stranggiesskokille austretenden stranges
DE2435495A1 (de) * 1973-07-27 1975-02-13 Voest Ag Kuehleinrichtung fuer kontinuierlich zu giessende straenge
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
AT332582B (de) * 1975-02-17 1976-10-11 Voest Ag Stranggiessanlage fur brammen
DE2636666B1 (de) * 1976-08-14 1977-11-10 Demag Ag Spritzduesen-anordnung fuer metall-, insbesondere fuer stahlstranggiessanlagen fuer extrem breite stahlbrammen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5212210A (en) * 1992-03-18 1993-05-18 Minnesota Mining And Manufacturing Company Energy curable compositions having improved cure speeds
DE19702718C1 (de) * 1997-01-15 1998-10-01 Mannesmann Ag Verfahren und Vorrichtung zur Kühlmediumsteuerung bei einer Stranggießanlage
WO2002036291A1 (fr) * 2000-11-04 2002-05-10 Sms Demag Aktiengesellschaft Systeme de guidage de coulee continue d'une installation de coulee continue comprenant un dispositif de refroidissement secondaire
WO2007121804A1 (fr) * 2006-04-25 2007-11-01 Siemens Vai Metals Technologies Gmbh & Co Dispositif de reglage de buse d'injection
AT503526B1 (de) * 2006-04-25 2008-07-15 Voest Alpine Ind Anlagen Spritzdüsen-verstelleinrichtung
CN101432086B (zh) * 2006-04-25 2011-09-07 西门子Vai金属技术两合公司 喷嘴调节装置

Also Published As

Publication number Publication date
DE2939322A1 (de) 1981-04-16
ES495097A0 (es) 1981-06-16
DE2939322C2 (de) 1986-09-11
ES8105597A1 (es) 1981-06-16
EP0028686B1 (fr) 1983-11-30
US4476914A (en) 1984-10-16
ATE5462T1 (de) 1983-12-15
JPS5656768A (en) 1981-05-18

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