EP0943382B1 - Procédé et dispositif de contrôle du débit calorifique dans une lingotière de coulée continue lors de la coulée de brames - Google Patents

Procédé et dispositif de contrôle du débit calorifique dans une lingotière de coulée continue lors de la coulée de brames Download PDF

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Publication number
EP0943382B1
EP0943382B1 EP99104351A EP99104351A EP0943382B1 EP 0943382 B1 EP0943382 B1 EP 0943382B1 EP 99104351 A EP99104351 A EP 99104351A EP 99104351 A EP99104351 A EP 99104351A EP 0943382 B1 EP0943382 B1 EP 0943382B1
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EP
European Patent Office
Prior art keywords
mould
water
temperature
mold
casting
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
EP99104351A
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German (de)
English (en)
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EP0943382A1 (fr
Inventor
Gerhard Arnolds
Lothar Parschat
Fritz-Peter Prof. Dr. Ing. Pleschiutschnigg
Uwe Plociennik
Joachim Schwellenbach
Hans Streubel
Adolf Zajber
Matthias Arzberger
Mertin Langer
Dirk Dr. Letzel
Hans Moll
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
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SMS Demag AG
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Publication of EP0943382A1 publication Critical patent/EP0943382A1/fr
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    • 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould

Definitions

  • the invention relates to a method and a continuous casting mold for producing Strands of slab, in particular made of steel, through a plate mold water-cooled, adjustable narrow side mold plates, which are between water-cooled Wide-side mold plates are clamped, which is Pouring is carried out using a dip spout when using mold powder for formation of pouring slag and oscillation of the plate mold, measuring the temperatures in the broadside mold plates and regulating the temperatures in the inlet and outlet lines for the cooling water.
  • the thin slabs of the size range 150mm - 40mm thickness x 3,500mm - 600mm width are mainly poured with a funnel mold.
  • the heat flow in the middle of the mold i.e. in the area of a dip tube existing diving spout usually differs from that next to the Diving spout and is larger.
  • the object of the invention is a Procedures and a mold to describe the temperature of the skin of the Cu plates of the mold in the mold level area 'online' to record a in Height and distribution optimal and constant temperature profile of the copper plate skin in the mold level even with changing copper plate thickness can.
  • the continuous casting speed when using the continuous casting mold is between 0.5 and 10 m / min.
  • An embodiment further consists in that the partial width across the mold and or integral heat flow profiles are measured over the mold height.
  • temperature measurements are discrete across the mold width to determine the temperature of the mold skin on the steel facing Side.
  • the continuous casting mold is used to produce slab strands, in particular made of steel, from a plate mold made of water-cooled narrow side mold plates, sandwiched between water-cooled broadside mold plates are, whereby the liquid steel is introduced by means of a dip spout is, using casting powder to form slag, with a Oscillation device, water temperature sensors and control elements in Inlet and outlet lines for the cooling water.
  • the continuous casting mold achieves the object according to the invention in that the water temperature sensor and at least one thermocouple in transition openings between copper cooling slots and an upper distribution room of the water tank are arranged and the control elements in the upper distribution room of the water box for partial control of the cooling water over partial created heat flow profiles and or temperature profiles over the mold height to be controlled.
  • the continuous casting mold is further configured in that further thermocouples in the narrow side mold plates and or in the broad side mold plates are installed.
  • FIG. 1 schematically shows a section through a broadside mold plate 1 and a slab 2 in the casting direction.
  • the slab 2 is poured with a dip spout 4 and casting powder 5.
  • isothermally 7 at 1500 ° C
  • the mold has the highest temperature in the mold level 6 at the mold skin 8 of, for example, 400 ° C. and represents the starting point for the 400 ° C. isotherm 7 (400 ° C.), which is in the space between the strand shell 9 and the broadside mold plate 1 , filled with solid and liquid pouring slag 10 expands.
  • the copper plate skin temperature has, for example, a distribution as shown in FIG. 1. From the mold level area 6 on the mold skin 8, the temperatures drop both in the casting direction 3 and against the casting direction 3 towards the upper edge 12 of the copper plate. B. from 50 ° C.
  • This temperature field between the broad side mold plate 1 and the strand shell 9 with its distinctive and maximum temperature of 400 ° C in the area of the mold level 6 can by changing the water cooling and / or copper plate thickness to be influenced.
  • the temperature of the Cu plate 12 in the mold level area 6 can be reduced (T - Q 2 ) ⁇ (T - Q 1 ) and, in connection with this, the melting behavior of the mold powder 5 can be accompanied be influenced by crust formation 13.
  • FIG. 2a shows schematically the broadside copper plate 14 with the water tank 16 represents a rectangular mold.
  • FIG. 2a shows the view of the broad side mold plate 1 and 2b the section through the broadside copper plate 14 and Water box 16.
  • the broadside copper plate 14 is on the water tank via clamping screws 15 16 screwed.
  • the water box 16 is in the lower area with cooling media, preferably with cooling water 19, in quantity and pressure via the border line 17th provided.
  • the cooling water 19 (Fig. 2b) flows at a desired speed through outlet lines 20 in copper cooling slots 21 of broadside copper plates 14 controlled in pressure and quantity / time, in order then through transition openings 22 which are uniformly introduced across the width of the water tank 16, in the inflow upper distribution space 23. From here, the cooling water 19 is over an outlet line 24 to the mold circuit, which can be regulated in pressure and quantity, and fed to the water treatment.
  • FIGS. 3a-3c show the invention for a rectangular mold.
  • the mold skin temperature of the casting level area 6 is in the areas 30 next to the diving spout 4 of the mold width in the diving spout area 31 by reducing the partial amount of water in the water zones 32 1/1 'to n / n' of the immersion nozzle 30 have been adjusted as well as the absolute Temperature level has been set to a certain value.
  • the combination the thermocouples 29, the water temperature measurement 22.1 and the partial Amounts of water in the water zones 32 allow the temperature distribution to be controlled 25 over the mold width 31 and its absolute height.
  • the amounts of water in the respective water zones 32 can, for example, by a Slider plate 33, Fig. 3b, which has a certain profile, the thermal profile with constant, partial water cooling and that corresponds to all transition openings 22 in the upper distribution chamber 23 of the water tank at the same time recorded, controlled.
  • This regulator can also in the lower distribution chamber 18 of the water tank 16 may be arranged. (Fig. 2b).
  • Fig. 4a shows the features of the invention in a funnel mold with a pouring funnel 35, compared to the prior art in the left half of Fig. 4a.
  • the partial water in the water zones is similar to that in FIG. 3a 32 next to the mold width area 30 of the immersion spout 4, taking into account of the pouring hopper 35 with its envelope 36 partially detected.
  • the Amounts of water can be controlled with the slide plate 33a or can be regulated per transition opening 22 with a control valve 34 (Fig. 4d).
  • the slide plate 33a is over the mold width and thickness and the control valve 34 described is shown schematically in FIG. 4d.
  • the Fig. 4e shows the casting funnel 35 in cross section.
  • mechanical inserts 37 shown for throttling the transition openings 22, however no controlling or regulating the water quantities and only a static one Form embodiment.
  • the essential features are comparative in FIG. 5 using the example of a rectangular mold with the prior art.
  • the left Fig. 5a presents itself Setting temperature distribution 25 of the copper plate skin temperature in the area of the mold level 6 over the mold width 30 (see also FIG. 4a).
  • the right Fig. 5b is the temperature distribution 25 using the features of the invention shown.
  • absolute temperature level 38 can be selected simultaneously within certain limits.

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

Claims (7)

  1. Procédé de fabrication de barres de brames (2), notamment en acier, à l'aide d'une lingotière à plaques qui consiste en plaques de lingotières à côté étroit (27) réglables refroidies à l'eau, qui sont bloquées entre des plaques de lingotière à côté large (1) refroidies à l'eau, la coulée ayant lieu à travers une busette immergée (4), en utilisant de la poudre de coulée (5) pour former une scorie de coulée (10) et sous oscillation de la lingotière à plaques, en mesurant les températures dans les plaques de lingotière à côté large (1) et en réglant les températures dans les conduites d'entrée ou de sortie (17 ; 20) pour l'eau de refroidissement (19),
    caractérisé en ce que
    la répartition de température (25) de la température d'enveloppe des plaques en cuivre est mesurée au moins sur la largeur de la lingotière (31) dans la zone du niveau de la coulée (6) en établissant, à l'aide des capteurs de température (22.1) et d'au moins un thermocouple (29), des profils calorifiques partiels (Q1 ; Q2) et/ou des profils de température (28) sur la hauteur de la lingotière et en ce que la répartition de température requise (25) sur la largeur de la lingotière (31) est réglée dans la zone du niveau de la coulée (6) dans des ouvertures de passage (22) entre les fentes de refroidissement du cuivre (21) et une chambre distributrice supérieure (23) du caisson à eau (16) et est contrôlée pendant le processus de coulée.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    les profils calorifiques partiels et/ou intégraux sur la hauteur de la lingotière sont mesurés sur la largeur de la lingotière (25).
  3. Procédé selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce que
    des mesures de température distinctes sont réalisées sur la largeur de la lingotière (26) pour définir la température de l'enveloppe de la lingotière (8) sur le côté tourné vers l'acier.
  4. Lingotière de coulée continue pour la fabrication de barres de brames (2), notamment en acier, se présentant sous forme d'une lingotière à plaques qui est composée de plaques de lingotière à côté étroit (27) réglables refroidies à l'eau qui sont bloquées entre des plaques de lingotière à côté large (1) refroidies à l'eau, l'acier liquide étant introduit au moyen d'une buse immergée (4), en utilisant de la poudre de coulée (5) pour former de la scorie de coulée (10), avec un dispositif d'oscillation, des capteurs de température de l'eau (22.1) et des organes de réglage (33; 34) dans des conduites d'entrée ou de sortie (17 ; 20) pour l'eau de refroidissement (19),
    caractérisée en ce que
    les capteurs de température de l'eau (22.1) sont disposés sur la largeur de la lingotière (31) dans des ouvertures de passage (22) entre des fentes de refroidissement du cuivre (21) et une chambre distributrice supérieure (23) du caisson à eau (16), qu'au moins un thermocouple (29) est intégré dans la plaque de lingotière à côté large (1), permettant d'établir sur la largeur de la lingotière des profils calorifiques et/ou des profils de température partiels (28) sur la hauteur de la lingotière, et que les organes de réglage (33 ; 34), disposés dans la chambre distributrice supérieure (23) du caisson à eau (16) servant à contrôler partiellement l'eau de refroidissement (19) au niveau de sa quantité de flux, sont contrôlables au moyen de profils calorifiques et/ou profits de température (28) établis partiellement sur la hauteur de la lingotière.
  5. Lingotière de coulée continue selon la revendication 4,
    caractérisée en ce que
    d'autres thermocouples (29) sont intégrés dans les plaques de lingotière à côté étroit (27) et/ou les plaques de lingotière à côté large (1).
  6. Lingotière de coulée continue selon l'une quelconque des revendications 4 ou 5,
    caractérisée en ce qu'on utilise, au lieu de la soupape de réglage (34), une plaque coulissante (33a) pour contrôler les quantités d'eau de refroidissement.
  7. Lingotière de coulée continue selon l'une quelconque des revendications 4 à 6,
    caractérisée en ce que
    des inserts mécaniques (37) sont posés aux ouvertures de passage (22) pour prérégler les quantités d'eau.
EP99104351A 1998-03-12 1999-03-04 Procédé et dispositif de contrôle du débit calorifique dans une lingotière de coulée continue lors de la coulée de brames Expired - Lifetime EP0943382B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19810672 1998-03-12
DE19810672A DE19810672B4 (de) 1998-03-12 1998-03-12 Verfahren und Stranggießkokille zum Erzeugen von Brammensträngen, insbesondere aus Stahl

Publications (2)

Publication Number Publication Date
EP0943382A1 EP0943382A1 (fr) 1999-09-22
EP0943382B1 true EP0943382B1 (fr) 2004-08-25

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EP99104351A Expired - Lifetime EP0943382B1 (fr) 1998-03-12 1999-03-04 Procédé et dispositif de contrôle du débit calorifique dans une lingotière de coulée continue lors de la coulée de brames

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EP (1) EP0943382B1 (fr)
AT (1) ATE274389T1 (fr)
DE (2) DE19810672B4 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19956577A1 (de) 1999-11-25 2001-05-31 Sms Demag Ag Verfahren zum Stranggießen von Brammen, insbesondere von Dünnbrammen, sowie eine Vorrichtung zu dessen Durchführung
EP1103323A3 (fr) * 1999-11-29 2001-09-19 SMS Demag AG Procédé et dispositif pour la coulée continue d'acier
ATE299766T1 (de) * 2000-04-25 2005-08-15 Sms Demag Ag Verfahren und vorrichtung zur thermischen kontrolle einer stranggiesskokille
DE10119354B4 (de) * 2001-04-20 2005-02-10 Sms Demag Ag Verfahren und Vorrichtung zur Vergleichmäßigung der Kokillenhauttemperatur über die Stranggießkokillenhöhe
DE102008029742A1 (de) 2008-06-25 2009-12-31 Sms Siemag Aktiengesellschaft Kokille zum Gießen von Metall
DE102009023677A1 (de) 2009-06-03 2010-12-09 Egon Evertz Kg (Gmbh & Co.) Verfahren zur Regelung der Flüssigkeitskühlung von Stranggießkokillen
DE102011114556A1 (de) * 2011-09-30 2013-04-04 Egon Evertz Kg (Gmbh & Co.) Kupfer-Kokille oder Kupfer-Kokillenplatte zum Stranggießen von Metallen oder Metalllegierungen
DE102012224132B4 (de) * 2012-12-21 2023-10-05 Primetals Technologies Austria GmbH Überwachungsverfahren für eine Stranggießkokille mit Aufbau einer Datenbank
ITUD20130053A1 (it) * 2013-04-23 2014-10-24 Danieli Off Mecc Apparato per la colata continua
DE102014112206A1 (de) * 2014-08-26 2016-03-03 Peter Valentin Verfahren zum Stranggießen eines Metalls, insbesondere eines Stahls, und Vorrichtung zum Stranggießen
CN110369687B (zh) * 2019-08-02 2024-04-30 中国重型机械研究院股份公司 一种在线实时修正板坯断面梯形缺陷的智能装置及方法
CN113351842B (zh) * 2021-05-19 2022-10-18 天津荣程联合钢铁集团有限公司 一种大断面板坯高效稳定的连铸生产工艺
CN116511445B (zh) * 2023-06-05 2026-02-24 重庆钢铁股份有限公司 一种板坯连铸机结晶器调整矩形度的方法

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Publication number Priority date Publication date Assignee Title
AT281330B (de) * 1968-06-05 1970-05-11 Wiener Schwachstromwerke Gmbh Vorrichtung zum Stranggießen mit einer die Durchlaufkokille umgebenden Kühlvorrichtung
DE2160206A1 (de) * 1971-12-04 1973-06-14 Fischer & Porter Gmbh Anordnung zur kuehlwassermengenregelung bei kokillen in stranggiessanlagen
DE4117073A1 (de) * 1991-05-22 1992-11-26 Mannesmann Ag Temperaturmessung brammenkokille
DE19529931C1 (de) * 1995-08-02 1997-04-03 Mannesmann Ag Plattenkokille zur Erzeugung von Strängen aus Stahl
DE19722877C2 (de) * 1997-05-31 1999-09-09 Schloemann Siemag Ag Flüssigkeitsgekühlte Stranggießkokille

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Publication number Publication date
DE19810672B4 (de) 2006-02-09
ATE274389T1 (de) 2004-09-15
DE19810672A1 (de) 1999-09-16
DE59910316D1 (de) 2004-09-30
EP0943382A1 (fr) 1999-09-22

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