EP0334802B1 - Installation de coulée pour la fabrication continue de bande métallique et procédé - Google Patents

Installation de coulée pour la fabrication continue de bande métallique et procédé Download PDF

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Publication number
EP0334802B1
EP0334802B1 EP89730066A EP89730066A EP0334802B1 EP 0334802 B1 EP0334802 B1 EP 0334802B1 EP 89730066 A EP89730066 A EP 89730066A EP 89730066 A EP89730066 A EP 89730066A EP 0334802 B1 EP0334802 B1 EP 0334802B1
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EP
European Patent Office
Prior art keywords
pouring nozzle
strip
pouring
distributor
cooling conveyor
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
EP89730066A
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German (de)
English (en)
Other versions
EP0334802A3 (en
EP0334802A2 (fr
Inventor
Ewald Feuerstacke
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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
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Application filed by Mannesmann AG filed Critical Mannesmann AG
Priority to AT89730066T priority Critical patent/ATE89770T1/de
Publication of EP0334802A2 publication Critical patent/EP0334802A2/fr
Publication of EP0334802A3 publication Critical patent/EP0334802A3/de
Application granted granted Critical
Publication of EP0334802B1 publication Critical patent/EP0334802B1/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
    • 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
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0602—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a casting wheel and belt, e.g. Properzi-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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0631—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/064—Accessories therefor for supplying molten metal

Definitions

  • the present invention relates to an apparatus and method for casting strips of metal, in particular steel, in which the molten metal is fed from a pouring nozzle, which preferably corresponds to the strip width, onto a continuously moving, cooled conveyor belt and the nozzle mouth with its plane towards the thickness of the pouring metal strip, ie is adjustable to an acute angle to the conveyor belt level.
  • a pouring nozzle which preferably corresponds to the strip width
  • a continuously moving, cooled conveyor belt and the nozzle mouth with its plane towards the thickness of the pouring metal strip ie is adjustable to an acute angle to the conveyor belt level.
  • the object of the present invention is to improve the quality of the thin steel strips that can be produced with such a system and to improve the system in terms of manageability and operational safety.
  • the invention therefore proposes that the Distributor designed as a double chamber vessel, at least the pouring chamber provided with the pouring nozzle is sealed gas-tight above the melt and is connected to a pressure-controllable gas source, that the pouring nozzle is followed by a position-adjustable, adjustable smoothing roller, at least one distance measuring device on the pouring nozzle for determining the position of the pouring nozzle Cooling belt is provided and is connected via a controller with means for changing the position of the distributor.
  • the Distributor designed as a double chamber vessel, at least the pouring chamber provided with the pouring nozzle is sealed gas-tight above the melt and is connected to a pressure-controllable gas source, that the pouring nozzle is followed by a position-adjustable, adjustable smoothing roller, at least one distance measuring device on the pouring nozzle for determining the position of the pouring nozzle Cooling belt is provided and is connected via a controller with means for changing the position of the distributor.
  • a further embodiment of the pouring device according to the invention provides that the distance measuring device is a dynamic pressure measuring device and the measuring opening is arranged in the plane of the outlet opening of the pouring nozzle in the wall of the pouring nozzle which is assigned to the strip inlet side and which Outlet opening of the pouring nozzle is arranged inclined to the surface of the cooling belt and the angle of inclination opens in the direction of strip withdrawal.
  • the distance measuring device is a dynamic pressure measuring device and the measuring opening is arranged in the plane of the outlet opening of the pouring nozzle in the wall of the pouring nozzle which is assigned to the strip inlet side and which Outlet opening of the pouring nozzle is arranged inclined to the surface of the cooling belt and the angle of inclination opens in the direction of strip withdrawal.
  • means are arranged in the strip take-off direction behind the casting nozzle, with which the thickness of the cast strip can be detected and that the measured values are compared in a control unit with predetermined target values and the regulator on the gas source in the sense of a Pressure change acts to regulate the intended strip thickness by controlling the melt flow rate.
  • the means for determining the strip thickness is in particular a radiometric measuring device.
  • the radiometric measuring device can be connected to a further controller, which is connected to actuators by a height-adjustable support element arranged below the cooling belt. This support element is in particular below the pouring nozzle and can also be used to control the strip thickness.
  • each measuring device is connected to the corresponding actuating drives of one supporting element each via a controller.
  • the distance measuring devices mentioned at the outset are arranged in the outer region of the pouring nozzle in order to prevent the strip from tilting relative to the pouring nozzle and to create a thick band that is uniform across the entire width.
  • the thickness of the cast strip is measured, the measured value is fed to a regulator and, after comparison with a predetermined setpoint characterizing the thickness of the strip, the gas pressure in the pouring chamber of the distributor vessel is connected is regulated with the flow rate of the melt into the pouring chamber.
  • the above-described method for operating a pouring device can be characterized in a further embodiment of the invention, starting from the previously described generic type, in that the distance of the pouring nozzle is measured by means of a dynamic pressure measurement of a gas jet emerging from a measuring opening in the plane in the outlet opening, a the measured value of Signal corresponding to the dynamic pressure is fed to a controller and, after comparison with a target value which characterizes the distance of the nozzle from the cooling belt, actuating means acting on the distributor are actuated in the sense of keeping the measured value constant or the distance between the casting nozzle and the cooling belt surface.
  • the thickness of the cast strip is measured by means of several thickness gauges in the vicinity of the pouring nozzle distributed over the strip width, the measured values of the individual measuring instruments with a predetermined target value characterizing the thickness of the strip in one measuring instrument each assigned controller and, in the event of deviations from the setpoint, supplied to the actuator of the respective support element assigned to the thickness measuring device and opposite the casting nozzle for setting a desired profile and is set.
  • Fig. 1 shows a casting device for the continuous production of metal strip 19, consisting of the endless cooling belt 9, which is guided over transport rollers 20, 21 and driven in rotation.
  • a cooling or smoothing roller 1 is arranged above the cooling belt 9 and its position relative to the cooling belt 9 can be changed by actuating cylinders 22.
  • the cooling belt 9 including the transport rollers 20, 21 is mounted on a frame 2 which is adjustable in the inclination to the horizontal.
  • the frame 2 is articulated on one side, with an articulated axis 4, which extends transversely to the tape take-off direction and rests on the opposite side on vertically arranged hydraulically operated actuating cylinders 16.
  • 24 denotes a gas source which is connected to the outlet chamber 3 ′′.
  • the distribution vessel 3 is also adjustable in position.
  • the distributor vessel 3 consists of an inlet chamber 3 'and an outlet chamber 3' '.
  • the pouring nozzle 7 is arranged on the outlet chamber 3 ′′.
  • the pouring chamber 3 is sealed gas-tight above the melt.
  • the distributor 3, which is designed as a double-chamber vessel, is separated into the areas of the pouring chamber 3 'and the pouring chamber 3' 'by a central wall 23 which projects from above into the distributor and into the melt.
  • a movable carriage 6 carrying the distributor 3 is mounted on the frame 2.
  • the distributor 3 can be adjusted in height by means of a hydraulic cylinder 13.
  • the hydraulic cylinder 13 is included in a control circuit which includes the regulator R1 and a dynamic pressure measurement of a gas jet emerging at the casting nozzle 7, as shown in more detail in FIG. 3.
  • the distance measuring device 11 with the measuring opening 11 ' is arranged on or in the wall of the casting nozzle 7 assigned to the belt inlet side.
  • the dynamic pressure of the gas emerging at 11 'as a measure of the distance of the pouring nozzle 7 from the cooling belt 9 is fed to the controller R1.
  • the controller R1 controls the hydraulic cylinder 13 in the sense of keeping the distance of the pouring nozzle 7 from the surface of the cooling belt 9 constant.
  • the pouring nozzle 7 is immediately followed by a thickness gauge 14 for determining the thickness of the metal strip 19 produced.
  • the thickness gauge works according to the radiographic method and accordingly has transmitters and receivers which are arranged above or below the strip.
  • the measuring device 14 is connected to the pressure-controllable gas source 24 via the regulator R2.
  • the bath level of the melt 25 can be regulated via the gas pressure in the pouring chamber 3 ′′ and thus the amount of outflow from the pouring nozzle 7 leaking metal.
  • the “gas source” is operated as a connection to a vacuum chamber.
  • the measuring device 14 is also connected to a further controller R4, which carries actuating means for influencing the distance from the support elements 18 arranged below the cooling belt 9.
  • the support elements 18 in the form of a continuous roll or a roll consisting of individual sections are arranged in the region of the outlet opening of the pouring nozzle 7.
  • the controllable position of the support elements 18 also makes it possible to influence the thickness of the band 19 to be produced. In the event that the support element 18 consists of several individual rollers, a corresponding number of adjusting elements 15 are of course required.
  • FIG. 4. 4 shows the pouring nozzle 7 with individual rollers 181, 182, 183 arranged below the belt 9.
  • Each roller is assigned a corresponding actuating means 171, 172, 173, each of which is connected to its own controller R41, R42, R43.
  • R41, R42, R43 Such a breakdown of the support elements naturally makes it necessary for a corresponding number of thickness measuring devices 14 to also be present, so that each thickness measuring device 14 is assigned a corresponding supporting roller. This division makes it possible to achieve a finer adjustment and influencing of the strip thickness over the strip width.
  • FIG. 2 which detects the belt speed of the cooling belt 9, feeds the belt speed to a controller R3 and acts on an actuating cylinder 16, with the aid of which the inclination of the casting belt can be regulated as a function of the belt speed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Forging (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Claims (10)

  1. Installation de coulée pour la fabrication en continu d'une bande métallique (19), comportant une bande de refroidissement rotative (9), un distributeur (3) à buse de coulée (7) et rouleau de lissage (1) réglable dont la position peut être modifiée et qui est agencé en aval de la buse de coulée (7), la bande de refroidissement (9) étant montée sur un châssis (2) dont l'inclinaison par rapport à l'horizontale est réglable, et le distributeur (3) pouvant être réglé en hauteur à l'intérieur du châssis (2), le distributeur (3) étant réalisé en tant que récipient à chambre double comportant une chambre d'entrée de coulée (3') et une chambre de sortie de coulée (3''), et au moins la chambre de sortie de coulée (3''), munie de la buse de coulée (7), étant fermée de façon étanche aux gaz au-dessus du bain de fusion,
    caractérisée en ce que la chambre fermée de façon étanche aux gaz est reliée à une source de gaz (24) réglable en pression et, sur la buse de coulée (7), au moins un appareil de mesure de distance (11), pour déterminer la position de la buse de coulée (7) par rapport à la bande de refroidissement (9), est prévu, et est relié, par l'intermédiaire d'un régulateur (R1), à des moyens (13) pour modifier la position du distributeur (3).
  2. Installation de coulée selon la revendication 1,
    caractérisée en ce que l'appareil de mesure de distance (11) est un appareil de mesure de pression dynamique, et l'ouverture de mesure (11') dans le plan de l'ouverture de sortie (8) de la buse de coulée (7) est agencée dans la paroi de la buse de coulée (7), qui est associée au côté d'entrée de la bande, et l'ouverture de sortie (8) de la buse de coulée (7) est agencée de façon inclinée par rapport à la surface de la bande de refroidissement (9) et l'angle d'inclinaison (10) s'ouvre dans la direction d'extraction de la bande.
  3. Installation de coulée selon la revendication 1,
    caractérisée en ce que la source de gaz (24) réglable en pression est reliée, par l'intermédiaire d'un régulateur (R2), à des moyens (14), agencés en aval, dans la direction d'extraction de la bande, de la buse de coulée (7), pour déterminer l'épaisseur de la bande coulée (19).
  4. Installation de coulée selon la revendication 3,
    caractérisée en ce que le moyen (14) est un appareil de mesure travaillant de façon radiométrique.
  5. Installation de coulée selon une des revendications 1 à 4,
    caractérisée en ce que l'appareil de mesure (14) travaillant de façon radiométrique est relié à un régulateur (R4), et le régulateur (R4) est relié à un vérin (17) d'un élément d'appui (18) réglable en hauteur, opposé à la buse de coulée (7), et agencé au-dessous de la bande de refroidissement (9).
  6. Installation de coulée selon la revendication 5,
    caractérisée en ce que plusieurs appareils de mesure (14) sont répartis sur la largeur de bande, chaque appareil de mesure étant relié à chaque fois, par l'intermédiaire d'un régulateur (R41, R41, R43), aux vérins correspondants (171,172,173) d'un élément d'appui respectif (181,182,183).
  7. Installation de coulée selon les revendications 1 et 2, caractérisée en ce que la buse de coulée (7) correspond à la largeur de la bande à couler (19), et des appareils de mesure de distance (11) sont agencés dans les zones externes de la buse de coulée (7).
  8. Procédé pour le fonctionnement d'une installation de coulée pour la fabrication en continu d'une bande métallique, dans lequel un bain de fusion est amené à partir d'un distributeur dans un moule de coulée qui est constitué d'une bande de refroidissement rotative, d'une buse de coulée et d'un rouleau de refroidissement associé à la bande de refroidissement, la pression ferrostatique dans le distributeur et la taille de la section transversale de sortie de la buse de coulée, en liaison avec la position de l'ouverture de sortie de la buse de coulée par rapport à la bande de refroidissement, déterminant l'épaisseur de la bande créée,
    caractérisé en ce que l'épaisseur de la bande coulée est mesurée, la valeur de mesure est amenée à un régulateur et, après comparaison avec une valeur de consigne prédéfinie, caractérisant l'épaisseur de la bande, la pression de gaz dans la chambre de sortie de coulée (3") du distributeur (3) est réglée en fonction de la quantité amenée du bain de fusion dans la chambre d'entrée de coulée (3').
  9. Procédé pour le fonctionnement d'une installation de coulée pour la fabrication en continu d'une bande métallique, dans lequel un bain de fusion est amené à partir d'un distributeur dans un moule de coulée qui est constitué d'une bande de refroidissement rotative, d'une buse de coulée et d'un rouleau de refroidissement associé à la bande de refroidissement, la pression ferrostatique dans le distributeur et la taille de la section transversale de sortie de la buse de coulée, en liaison avec la position de l'ouverture de sortie de la buse de coulée par rapport à la bande de refroidissement, déterminant l'épaisseur de la bande créée,
    caractérisé en ce que la distance de la buse de coulée (7) est détectée au moyen d'une mesure de pression dynamique d'un jet de gaz sortant d'une ouverture dans le plan de l'ouverture de sortie (8), en ce qu'un signal correspondant à la valeur de mesure de la pression dynamique est amené à un régulateur et, après comparaison avec une valeur de consigne qui caractérise la distance de la buse (7) à la bande de refroidissement (9), des moyens de réglage (13), agissant sur le distributeur (3), sont actionnés dans le sens de maintenir constante la valeur de mesure ou la distance de la buse de coulée (7) à la surface de la bande de refroidissement.
  10. Procédé pour le fonctionnement d'une installation de coulée pour la fabrication en continu d'une bande métallique, dans lequel un bain de fusion est amené à partir d'un distributeur dans un moule de coulée qui est constitué d'une bande de refroidissement rotative, d'une buse de coulée et d'un rouleau de refroidissement associé à la bande de refroidissement, la pression ferrostatique dans le distributeur et la taille de la section transversale de sortie de la buse de coulée, en liaison avec la position de l'ouverture de sortie de la buse de coulée par rapport à la bande de refroidissement, déterminant l'épaisseur de la bande créée,
    caractérisé en ce que l'épaisseur de la bande coulée est mesurée au moyen de plusieurs appareils de mesure d'épaisseur, répartis à proximité de la buse de coulée sur la largeur de bande, les valeurs de mesure des appareils de mesure individuels sont comparées à une valeur de consigne prédéfinie, caractérisant l'épaisseur de bande, dans un régulateur associé à chaque appareil de mesure, et, lorsqu'elles s'écartent de la valeur de consigne, elles sont ajustées et amenées au vérin de l'élément d'appui, opposé à la buse de coulée, associé à chaque appareil de mesure d'épaisseur, pour le réglage d'un profil souhaité.
EP89730066A 1988-03-24 1989-03-14 Installation de coulée pour la fabrication continue de bande métallique et procédé Expired - Lifetime EP0334802B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89730066T ATE89770T1 (de) 1988-03-24 1989-03-14 Giesseinrichtung zur kontinuierlichen herstellung von metallband und verfahren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3810302A DE3810302A1 (de) 1988-03-24 1988-03-24 Giesseinrichtung zur kontinuierlichen herstellung von metallband
DE3810302 1988-03-24

Publications (3)

Publication Number Publication Date
EP0334802A2 EP0334802A2 (fr) 1989-09-27
EP0334802A3 EP0334802A3 (en) 1990-11-22
EP0334802B1 true EP0334802B1 (fr) 1993-05-26

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ID=6350766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89730066A Expired - Lifetime EP0334802B1 (fr) 1988-03-24 1989-03-14 Installation de coulée pour la fabrication continue de bande métallique et procédé

Country Status (10)

Country Link
US (1) US5000250A (fr)
EP (1) EP0334802B1 (fr)
JP (1) JP2925568B2 (fr)
KR (1) KR960007493B1 (fr)
AT (1) ATE89770T1 (fr)
BR (1) BR8901364A (fr)
DE (2) DE3810302A1 (fr)
DK (1) DK137189A (fr)
ES (1) ES2040497T3 (fr)
ZA (1) ZA892180B (fr)

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WO2012080191A1 (fr) 2010-12-15 2012-06-21 Sms Siemag Ag Dispositif et procédé pour la coulée horizontale de bandes métalliques

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2008110330A1 (fr) 2007-03-09 2008-09-18 Sms Siemag Ag Dispositif de mesure d'épaisseur et procédé associé
WO2012080191A1 (fr) 2010-12-15 2012-06-21 Sms Siemag Ag Dispositif et procédé pour la coulée horizontale de bandes métalliques
DE102010063093A1 (de) 2010-12-15 2012-06-21 Sms Siemag Ag Einrichtung und Verfahren zum horizontalen Bandgießen
DE102010063093B4 (de) 2010-12-15 2023-07-06 Sms Group Gmbh Vorrichtung und Verfahren zum horizontalen Gießen von Metallbändern

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EP0334802A3 (en) 1990-11-22
JPH01278946A (ja) 1989-11-09
ATE89770T1 (de) 1993-06-15
JP2925568B2 (ja) 1999-07-28
US5000250A (en) 1991-03-19
DK137189A (da) 1989-09-25
DE58904455D1 (de) 1993-07-01
DE3810302A1 (de) 1989-10-12
ES2040497T3 (es) 1993-10-16
DE3810302C2 (fr) 1990-07-05
BR8901364A (pt) 1989-11-07
KR960007493B1 (ko) 1996-06-05
KR890014189A (ko) 1989-10-23
EP0334802A2 (fr) 1989-09-27
ZA892180B (en) 1989-11-29
DK137189D0 (da) 1989-03-21

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