EP0444297A2 - Procédé pour démarrer automatiquement une installation de coulée continue - Google Patents

Procédé pour démarrer automatiquement une installation de coulée continue Download PDF

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Publication number
EP0444297A2
EP0444297A2 EP90125000A EP90125000A EP0444297A2 EP 0444297 A2 EP0444297 A2 EP 0444297A2 EP 90125000 A EP90125000 A EP 90125000A EP 90125000 A EP90125000 A EP 90125000A EP 0444297 A2 EP0444297 A2 EP 0444297A2
Authority
EP
European Patent Office
Prior art keywords
stopper
opening
melt
fill level
closing
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
EP90125000A
Other languages
German (de)
English (en)
Other versions
EP0444297A3 (en
EP0444297B1 (fr
Inventor
Armin Kursfeld
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.)
Stopinc AG
Original Assignee
Stopinc AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4191298&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0444297(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Stopinc AG filed Critical Stopinc AG
Publication of EP0444297A2 publication Critical patent/EP0444297A2/fr
Publication of EP0444297A3 publication Critical patent/EP0444297A3/de
Application granted granted Critical
Publication of EP0444297B1 publication Critical patent/EP0444297B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/161—Controlling or regulating processes or operations for automatic starting the casting process
    • 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
    • B22D11/10—Supplying or treating molten metal
    • 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
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
    • 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
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
    • B22D11/183—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by measuring molten metal weight

Definitions

  • the invention relates to a method for the automatic casting of a continuous casting system, in which metal melt is poured out of a vessel in a controlled manner by means of a stopper closure provided therein and a continuous casting mold closed at the bottom by a start-up head is filled with the melt, the stopper opening and closing several times according to program-controlled time intervals is moved.
  • automatic casting is achieved by actuating the stopper by a control device according to a predetermined time program “open” and “close”. As soon as the level reaches the beginning of the measuring range of a level measuring device located in the upper area of the mold, a limit indicator switches off the open / close control and the melt flow rate is regulated to achieve a constant set level in the mold.
  • a limit indicator switches off the open / close control and the melt flow rate is regulated to achieve a constant set level in the mold.
  • the object of the present invention is therefore to improve the automatic casting with a stopper closure in such a way that great reliability and thus reliable casting can be achieved under the given conditions.
  • the object is achieved according to the invention in that the stopper which is moved open / closed several times during casting is actuated with different opening and closing paths assigned to the program-controlled time intervals.
  • the stopper is brought approximately into the full opening position in the first or in the few first opening (s), and consequently its opening paths are reduced with increasing fill level.
  • the stopper is advantageously controlled with opening paths that correspond to the average opening position during a regulated pouring that follows the target fill level. This results in a continuous transition from controlled to regulated pouring.
  • the opening / closing movements of the stopper are to be understood in the sense that these movements open or close the closure fully or throttled, or bring them back into the throttled position.
  • the effective closing position of the stopper is different on the one hand before each pouring start because of the insertion of the pouring sleeve (or pouring tube) into the fire-resistant vessel lining, and on the other hand, experience has shown after the first opening of the stopper when pouring on that when the stopper is closed again, its position changes by a certain amount.
  • the effective measured closing position is adopted adaptively for each opening, which in turn brings about a more precise definition of the casting process.
  • the invention can also be applied equally well to stopper-like closures.
  • molten metal 11 flows from a vessel 10 through a refractory pouring tube 12 arranged at its pouring opening into a mold 20.
  • the vessel 10 is usually an intermediate container which consists of a refractory lining and a steel jacket.
  • the amount of melt can be poured on in a controlled manner by a stopper closure 15 in the vessel 10 and subsequently poured off in a regulated manner.
  • the refractory stopper 15 is fastened to a support arm 16 and can be adjusted by means of an articulated lever 18 on a linkage 13, especially in an emergency, by hand or by a drive element 17 in the vertical direction.
  • the strand 23 formed by the solidified melt is pulled out by a take-off drive 24 at a take-off speed v.
  • the computer 30 can start the trigger drive 24 via a switch 32.
  • a weight measuring device 33 is also shown, with which the bath level in the vessel 10 can be determined indirectly.
  • a commercially available pressure cell 33 serves as a signal transmitter for the device 33.
  • the automatic casting according to the invention is started after the melt 11 has been poured into the vessel 10, either by manually operating a switch or automatically via the signal supplied by the weight measuring device 33 to the computer 30 as soon as it corresponds to the desired level.
  • the program-controlled casting process begins by briefly fully opening the stopper 15 into a position P2, and thus the first melt flowing into the mold 20. Before a time interval t 2 has elapsed, there is a first closing movement into a closing position P2 ', in which it has been shown in practice that this sets itself apart from the closing position P1 by a certain amount.
  • This stroke position P2 ' is determined by the computer 30 and the stopper 15 is stored in the following opening paths by one stroke s each, which is adaptively based on this effective closed position P2'.
  • the program-controlled casting process then continues with time intervals t2 ', t3, t3', t4, t4 ', t5 and t5' and the associated opening paths s3 to s5 with the positions P3 to P5.
  • the paths s3, s4 and s5 of the controlled open / close movements are reduced until they approach the average opening path s7 during the subsequent regulated pouring, the path s7 being stored in the computer 30 as an experience or calculated value.
  • a larger position P6 is then again provided for the opening path s6 with the corresponding time interval t6, after which the stopper is opened by the path s7 during the time interval t7.
  • the program-controlled casting process is ended by the computer 30; the latter transfers to an automatic fill level control, in which a target fill level is adjusted, for example, to 80% of the measuring range by means of a PID controller integrated in the computer 30. Since the measuring range usually only covers the upper part of the mold 20, this takes place Transition from automatic pouring to regulated pouring as soon as the fill level of the melt reaches the measuring range 21.
  • the controller controls the stopper 15 accordingly via the control 36 and the drive 17, after which more or less amount of melt is poured into the mold 20.
  • the drive 17 is, for example, a piston / cylinder unit.
  • a position transmitter 19 and a measured value unit 37 deliver the actual value of the drive position to the computer 30 in a feedback signal.
  • a subordinate position controller in the computer 30 ensures the desired position of the drive 17 and thus of the plug 15.
  • the opening and closing paths s2 to sn as well as the opening and closing times t2 to tn are entered into the software 30 as parameters in the computer. These parameters are specifically designed for the respective continuous caster.
  • such a number of open / close movements are also programmed in the computer 30 that if after the sixth movement the actual fill level would not yet be within the measuring range, further program-controlled open / close movements would take place until the fill level reaches the measuring range and the controller can thus adjust it to the target level.
  • the start of the starting head 26 is indicated with a speed curve v1.
  • the starting time takes place approximately when the desired fill level h s is reached .
  • the mold 20 filled in the casting-in accordance with the actual course shown h is on.
  • the stopper can be opened into position P7 - provided the filling level has been reached in the measuring range - according to the dashed line according to Fig. 2, again brought under program control into the closed position.
  • the starting head 26 is pulled out according to a withdrawal speed curve v2.
  • the stopper is opened in several partial steps around the opening path s7 and then the fill level controller in the computer 30 takes over the fill level to the desired level h s . With this deliberate delay in pulling the starting head 26 out, the solidification of the melt in the mold can be ensured as an additional measure.
  • FIG. 4 again shows a casting process according to the invention in a path / time diagram.
  • the stopper 15 is moved to the full open position P2 and then moved to the closed path s2 'in a throttled position P2'. Even after the openings in the positions P3 and P4 with reduced opening paths, the stopper is brought into throttled and not completely closed positions S3 'or S4'.
  • Corresponding time intervals t2, t2 ', t3, t3', t4, t4 ' are assigned to these open / close movements. Only after opening in the position P5 is the stopper brought into the closed position P5 ', this during a time interval t5'.
  • the controller in the computer 30 takes over the casting process and brings the fill level of the melt in the mold to the desired level hs.
  • the process for automatic casting according to FIG. 4 makes it clear that the procedure according to the invention can very well take account of the plant-specific requirements and that a wide variety of filling processes can be achieved.
  • the invention is of course not limited to the casting process shown in the exemplary embodiments, but, as already mentioned, can be variably adapted for continuous casting plants with different requirements or for casting different types of steel by changing the parameters.
  • the invention is also not limited to a conventional stopper closure, but rather can be applied for known stopper-like systems, as is known, for example, in the published patent application (WO 88/04209).
  • the stopper has a cylindrical pin at its lower end, which projects into the pouring opening of the vessel and seals laterally together with the pouring sleeve.
  • the pin has at least one radial inlet opening on its circumference and one longitudinal opening extending from this.
  • the stopper has a truncated cone-shaped shut-off surface above the pin, which forms an additional seal together with the end face of the pouring sleeve when the closure is closed.
  • the closure is opened and closed again by adjusting the height of the stopper.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Pinball Game Machines (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP90125000A 1990-02-28 1990-12-20 Procédé pour démarrer automatiquement une installation de coulée continue Revoked EP0444297B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH622/90 1990-02-28
CH622/90A CH682376A5 (de) 1990-02-28 1990-02-28 Verfahren zum automatischen Angiessen von einer Stranggiessanlage.

Publications (3)

Publication Number Publication Date
EP0444297A2 true EP0444297A2 (fr) 1991-09-04
EP0444297A3 EP0444297A3 (en) 1992-06-17
EP0444297B1 EP0444297B1 (fr) 1996-07-03

Family

ID=4191298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125000A Revoked EP0444297B1 (fr) 1990-02-28 1990-12-20 Procédé pour démarrer automatiquement une installation de coulée continue

Country Status (9)

Country Link
US (1) US5174361A (fr)
EP (1) EP0444297B1 (fr)
JP (1) JPH08224644A (fr)
KR (1) KR910021273A (fr)
AT (1) ATE139918T1 (fr)
CA (1) CA2037171A1 (fr)
CH (1) CH682376A5 (fr)
DE (1) DE59010404D1 (fr)
ZA (1) ZA91153B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2698806A1 (fr) * 1992-12-07 1994-06-10 Lorraine Laminage Procédé de remplissage automatique d'une lingotière de coulée continue, en début de coulée, et dispositif pour sa mise en Óoeuvre.
EP0611618A1 (fr) * 1993-02-13 1994-08-24 Inteco Internationale Technische Beratung Gesellschaft mbH Procédé et dispositif pour coulée continue d'un lingot
EP0734801A1 (fr) * 1995-03-28 1996-10-02 Concast Standard Ag Dispositif pour régler une alimentation de métal avec un tampon
FR2843056A1 (fr) * 2002-07-31 2004-02-06 Realisations Tech Sert Soc Et Procede de demarrage automatique d'une installation de coulee continu et ensemble pour la mise en oeuvre de ce procede

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2677284B1 (fr) * 1991-06-07 1993-08-27 Pechiney Aluminium Procede et appareillage pour la coulee automatique de demi-produits.
US5709260A (en) * 1995-08-22 1998-01-20 Wagstaff, Inc. Molten metal admission control in casting
EP0855238A1 (fr) * 1997-01-24 1998-07-29 Alusuisse Technology & Management AG Procédé pour la coulée continue verticale de métaux
FR2766113B1 (fr) * 1997-07-16 1999-09-17 Usinor Procede de demarrage d'une operation de coulee continue des metaux
US6513571B1 (en) 1998-05-27 2003-02-04 Hayes Lemmerz International, Inc. Apparatus for automatic refilling of a low pressure casting machine
US6896032B1 (en) 2002-09-26 2005-05-24 Hayes Lemmerz International, Inc. Stopper-poured molten metal casting vessel with constant head height
FR2859929B1 (fr) * 2003-09-23 2007-01-26 Realisations Tech Sert Soc Et Procede de demarrage automatique d'une installation de coulee continue et ensemble pour la mise en oeuvre de ce procede
KR101299094B1 (ko) * 2010-08-30 2013-08-27 현대제철 주식회사 래들 교환시 용강 오염범위 예측 방법
CN102133633B (zh) * 2011-04-21 2013-08-07 马鞍山钢铁股份有限公司 一种连铸机中间罐塞棒开闭机构
WO2014164911A1 (fr) * 2013-03-12 2014-10-09 Novelis Inc. Distribution de métal fondu intermittent
CN108145112B (zh) * 2016-12-05 2020-01-21 上海梅山钢铁股份有限公司 基于液位自动控制的板坯连铸塞棒控流自动开浇工艺
CN112496288B (zh) * 2020-12-10 2025-05-09 上海海能信息科技股份有限公司 一种连铸机自动开浇系统
CN114799101A (zh) * 2022-05-06 2022-07-29 马鞍山江润冶金有限责任公司 一种连铸圆坯快换联接件及其应用

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
DE2928901C2 (de) * 1979-07-13 1983-12-15 Mannesmann AG, 4000 Düsseldorf Verfahren zum Angießen von Metallen und Vorrichtung dazu
JPS5668570A (en) * 1979-11-07 1981-06-09 Kobe Steel Ltd Method of controlling molten metal surface when starting up continuous casting
DE3010811C2 (de) * 1980-03-20 1984-08-09 Vsesojuznyj naučno-issledovatel'skij institut avtomatizacii černoj metallurgii, Moskva Einrichtung zum Regeln der Schmelzenzufuhr während des Anfahrens einer Stranggießanlage
DE3344127A1 (de) * 1982-06-09 1985-06-20 Brown, Boveri & Cie Ag, 6800 Mannheim Verfahren und vorrichtung zum fuellen einer stranggiesskokille beim angiessen eines stranges
DE3421344C2 (de) * 1984-06-08 1993-04-29 Krupp Stahl Ag, 4630 Bochum Verfahren und Vorrichtung zum automatischen Füllen einer Stranggießkokille beim Angießen eines Stranges
DE3509932A1 (de) * 1985-03-19 1986-10-02 Metacon AG, Zürich Verfahren zum anfahren einer stranggiessanlage
LU85878A1 (de) * 1985-05-07 1986-12-05 Arbed Verfahren zur automatischen steuerung des anfahrbetriebes einer metall-stanggiessanlage
DE3679950D1 (de) * 1985-09-02 1991-08-01 Nippon Steel Corp Verfahren zum regeln des anfangsstadiums beim stranggiessen.
DE3608503C2 (de) * 1986-03-14 1994-09-01 Stopinc Ag Verfahren zum automatischen Angießen eines Stranges einer Stranggießanlage
JPS6321586A (ja) * 1986-07-16 1988-01-29 Komatsu Ltd 地中探査装置の信号処理方法
WO1988004209A1 (fr) * 1986-12-01 1988-06-16 Arva Ag Regulateur de decharge et d'ecoulement pour recipients metallurgiques et procede de coulee

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2698806A1 (fr) * 1992-12-07 1994-06-10 Lorraine Laminage Procédé de remplissage automatique d'une lingotière de coulée continue, en début de coulée, et dispositif pour sa mise en Óoeuvre.
EP0611618A1 (fr) * 1993-02-13 1994-08-24 Inteco Internationale Technische Beratung Gesellschaft mbH Procédé et dispositif pour coulée continue d'un lingot
EP0734801A1 (fr) * 1995-03-28 1996-10-02 Concast Standard Ag Dispositif pour régler une alimentation de métal avec un tampon
US5674426A (en) * 1995-03-28 1997-10-07 Concast Standard Ag Device for controlling an inflow of metal by means of a stopper
FR2843056A1 (fr) * 2002-07-31 2004-02-06 Realisations Tech Sert Soc Et Procede de demarrage automatique d'une installation de coulee continu et ensemble pour la mise en oeuvre de ce procede

Also Published As

Publication number Publication date
ZA91153B (en) 1991-11-27
CA2037171A1 (fr) 1991-08-29
US5174361A (en) 1992-12-29
ATE139918T1 (de) 1996-07-15
KR910021273A (ko) 1991-12-20
CH682376A5 (de) 1993-09-15
JPH08224644A (ja) 1996-09-03
DE59010404D1 (de) 1996-08-08
EP0444297A3 (en) 1992-06-17
EP0444297B1 (fr) 1996-07-03

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