EP0400302B1 - Procédé et installation pour le remplissage d'un moule de coulée continue avec du métal liquide - Google Patents

Procédé et installation pour le remplissage d'un moule de coulée continue avec du métal liquide Download PDF

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Publication number
EP0400302B1
EP0400302B1 EP90106625A EP90106625A EP0400302B1 EP 0400302 B1 EP0400302 B1 EP 0400302B1 EP 90106625 A EP90106625 A EP 90106625A EP 90106625 A EP90106625 A EP 90106625A EP 0400302 B1 EP0400302 B1 EP 0400302B1
Authority
EP
European Patent Office
Prior art keywords
continuous casting
ingot mould
casting ingot
bath surface
filling
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
EP90106625A
Other languages
German (de)
English (en)
Other versions
EP0400302A2 (fr
EP0400302A3 (fr
Inventor
Josef Lothmann
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.)
Zimmermann and Jansen GmbH
Original Assignee
Zimmermann and Jansen 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 Zimmermann and Jansen GmbH filed Critical Zimmermann and Jansen GmbH
Publication of EP0400302A2 publication Critical patent/EP0400302A2/fr
Publication of EP0400302A3 publication Critical patent/EP0400302A3/fr
Application granted granted Critical
Publication of EP0400302B1 publication Critical patent/EP0400302B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/18—Stopper-rods therefor
    • B22D41/186—Stopper-rods therefor with means for injecting a fluid into the melt

Definitions

  • the invention relates to a method and a device for filling a continuous casting mold with a metallic melt, in which the melt is regulatedly poured into the continuous casting mold through a bottom opening of a metallurgical vessel, in particular a distribution channel, which can be moved up and down, whereby during the filling of the continuous casting mold, the stopper carries out predetermined upward and downward movements, in particular depending on the level of the bath level in the continuous casting mold, and furthermore during the filling of the continuous casting mold at the end of the stopper facing the bottom opening through an outlet opening provided there, inert gas, in particular argon, into the escaping melt is blown.
  • inert gas in particular argon
  • EP-A-0 084 416 From EP-A-0 084 416 it is known to provide a longitudinal bore in the stopper, through which inert gas, in particular argon, can be introduced into the outflowing melt during casting.
  • inert gas in particular argon
  • the reason for this measure is to avoid freezing of the metallic melt and the deposition of aluminum oxide in the area of the bottom opening of the metallurgical vessel (see page 3, lines 20 ff, and page 11, line 5, EP-A-0 084 416).
  • the present invention is based on the object of providing a method and a device of the type mentioned at the outset, which allows fine adjustment of the bath level in the continuous casting mold while avoiding larger movements of the plug associated with the metallurgical vessel.
  • the ferrostatic height of the melt in the metallurgical vessel is also regulated, as in the not yet published DE-A-38 17 580 by the applicant, according to which the actual value of the amount of melt in the metallurgical vessel at successive times determined or sensed in the form of the melt weight or the bath level and with a setpoint, d. H. the target weight or the target bath level height, and then at least if the actual value is greater than or equal to the target value, the tendency of the control deviation upwards or downwards is determined, when an upper or lower tendency limit value is approached or exceeded correspondingly reversed control signals are emitted to the stopper.
  • the stopper movement can be reduced to a minimum, so that a constant strand withdrawal speed is ensured overall.
  • system-inherent tolerances can also be compensated for in the best possible way.
  • reference numeral 13 is a metallurgical vessel, e.g. B. a distribution channel or a so-called "tundish", characterized from a not shown Ladle molten metal 10 is supplied.
  • the spout at the bottom of the vessel 13 is defined by a bottom opening 12 and an adjoining dip tube 26.
  • the bottom opening 12 is assigned a plug 11 which can be moved up and down (double arrow 23) and with which the bottom opening 12 can be closed or opened in a predetermined manner.
  • a continuous casting mold 25 is arranged beneath the vessel 13, and melt is supplied to the bottom opening 12 with a corresponding opening. This is subsequently cooled in the continuous casting mold and cooled in a strand guide (not shown further) to form a solid steel strand.
  • the molten metal flowing out through the bottom opening 12 and the immersion tube 26 is identified by the arrows 28.
  • a bath level control is provided in a manner known per se. This consists of a measuring device for the bath level in the continuous casting mold 25 and is formed by a radioactive rod radiator 27 and a diametrically opposite scintillation counter 20 as a receiver.
  • the plug 11 can be raised and lowered in the metallurgical vessel 13 by means of a traverse 29 (double arrow 23).
  • the free end of the crossmember 29 is fastened to a vertical support 30 which can be moved up and down by a device (not shown in more detail), depending on the bath level height determined by the bath level measuring device 20, 27, a stopper movement always being triggered should be when the bath level 14 in the continuous casting mold 25 exceeds or falls below an upper or lower limit.
  • the last-mentioned limit values define a setpoint band, which can be broadened considerably by the measures described below, so that it is possible to move the within the considerably broadened setpoint band without plug movement Set and maintain the bath level to a specified setpoint height.
  • the plug 11 has at its end facing the bottom opening 12 of the metallurgical vessel 13 an outlet opening 18 which is connected to an inert gas, in particular an argon source 17 and through which inert gas, in particular argon, can be introduced into the outflowing melt (arrow 15).
  • the outlet opening 18 is connected to a central longitudinal bore 31 in the plug 11. This in turn is connected to the gas source or the gas reservoir 17 via a gas line 16, a control valve 19 being arranged in the connecting line 16 to regulate the amount of gas introduced into the melt, the degree of opening of which depends on that serving as a bath level sensor Scintillation counter 20 determined bath level 14 in the mold 25 is adjustable.
  • valve body 21 of the control valve 19 can be moved by a mechanical, pneumatic, hydraulic or electromotive drive 24 into the closed position or a predetermined opening or throttle position, the drive 24 reacting to a bath level signal supplied by the scintillation counter 20, such that at in relation to a predetermined set value increasing bath level 14, the degree of opening of valve 19 is increased, and vice versa, so that when the bath level 14 increases in relation to a given set value, more argon is blown into the outflowing melt (arrow 15) than when the bath level falls, so that the bath level height is kept essentially constant within the specified setpoint range for a given degree of opening of the plug 11.
  • the electrical connection between the scintillation counter 20 and the valve drive 24 is formed by the signal line 22.
  • a comparator 32 is also arranged, which determines whether the bath level 14 in the mold 15 is still within the predetermined setpoint range. If this is exceeded, the stopper is readjusted 11.
  • the corresponding signal for the plug drive, not shown, is identified by the reference number 33.
  • the system described is based on the knowledge that the argon melted in the bottom opening area retains melt, more or less depending on the amount of argon injected. In this way, the described fine control of the bath level 14 in the continuous casting mold 25 is possible within the predetermined setpoint range without additional readjustment of the stopper position. With the help of the measures described, the bath level setpoint range can be widened 2 to 3 times compared to the conventional setpoint range.
  • the argon can also be introduced through a gas line arranged in the bottom of the metallurgical vessel 13 and opening into the area of the bottom opening 12, which is also coupled to a controllable valve, so that depending on the deviation of the bath level 14 in the mold 25 from a setpoint value more or less argon can be blown into the outflowing melt with appropriate restraint.
  • the latter measure can also be provided in addition to the argon injection through the plug 11.
  • the control valve 19 is preferably actuated in cycles (digital).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)

Claims (5)

  1. Procédé pour le remplissage d'une coquille de coulée continue (25) avec du métal en fusion (10), par lequel
    - la masse fondue (10) est coulée de manière réglée dans la coquille de coulée continue (25), par une ouverture de fond (12) d'un récipient métallurgique (13), en particulier d'un répartireur,
    - un bouchon (11) prévu dans le récipient métallurgique (13) est animé, pendant le remplissage de la coquille de coulée continue (25), de mouvements ascendants et descendants prédéterminés pour l'ouverture ou la fermeture de l'ouverture de fond (12), qui dépendent notamment du niveau de bain (14) dans la coquille de coulée continue (25), et par lequel
    - un gaz inerte, notamment de l'argon, est insufflé, pendant le remplissage de la coquille de coulée continue (25), à l'extrémité du bouchon (11) dirigée vers l'ouverture de fond (12) (flèche 15),
    caractérisé en ce que le gaz inerte, notamment l'argon, est insufflé en fonction du niveau de bain (14) à l'intérieur de la coquille de coulée continue (25), de telle façon que, pour un niveau de bain (14) qui monte par rapport à une valeur de consigne prédéterminée, la quantité d'argon insufflée est plus grande que pour un niveau de bain qui baisse, de telle sorte que le niveau de bain (14) est sensiblement constant pour un degré d'ouverture prédéterminé du bouchon (11).
  2. Dispositif pour le remplissage d'une coquille de coulée continue (25) avec du métal en fusion (10), comprenant
    - un récipient métallurgique (13), en particulier un répartiteur, muni d'une ouverture de fond (12) qui peut être fermée ou ouverte au moyen d'un bouchon (11) déplaçable vers le haut et vers le bas, ledit bouchon (11) présentant à l'extrémité dirigée vers l'ouverture de fond (12), une ouverture de sortie (18) qui est raccordée, par l'intermédiaire d'une conduite de raccordement (16, 31), à une source de gaz inerte, notamment à une source d'argon (17),
    - et un détecteur (20) qui détecte le niveau de bain (14) à l'intérieur de la coquille de coulée continue (25)
    caractérisé en ce que dans la conduite de raccordement (16) menant à la source de gaz inerte, notamment d'argon (17), est insérée une soupape de réglage (19) dont le degré d'ouverture peut être réglé en fonction du niveau de bain (14) à l'intérieur de la coquille de coulée continue (25) détecté au moyen du détecteur (20).
  3. Dispositif selon la revendication 2, caractérisé en ce que la soupape de réglage (19) comprend un corps de soupape (21) qui peut être déplacé par un système d'entraînement (24) mécanique, pneumatique, hydraulique ou électrique, l'entraînement (24) réagissant sur un signal fourni par le détecteur (20) (circuit d'acheminement des signaux 22) de telle façon que le degré d'ouverture de la soupape (19) peut être augmenté lorsque le niveau de bain (14) monte par rapport à une valeur de consigne prédéterminée, et inversement.
  4. Dispositif pour le remplissage d'une coquille de coulée continue (25) avec du métal en fusion (10), comprenant
    - un récipient métallurgique (13), en particulier un répartiteur, muni d'une ouverture de fond (12) laquelle peut être fermée par un bouchon (11) déplaçable vers le haut et vers le bas,
    - et un détecteur (20) qui détecte le niveau de bain (14) à l'intérieur de la coquille de coulée continue (25), notamment selon l'une des revendications 2 ou 3,
    caractérisé en ce que pour l'introduction de gaz inerte, notamment de gaz d'argon, il est prévu dans le fond du récipient métallurgique (13), une conduite de gaz qui débouche dans la région de l'ouverture de fond (12) et comporte une soupape réglable, de telle façon que, en fonction de l'écart du niveau de bain (14) dans la coquille de coulée continue (25) par rapport à un niveau de consigne, une quantité de gaz inerte plus ou moins grande peut être insufflée dans la masse fondue sortante, en retenant celle-ci en conséquence.
  5. Dispositif selon l'une des revendications 2 à 4, caractérisé en ce que le détecteur (20) est couplé avec un dispositif de reconnaissance de tendance qui permet de commander la soupape de réglage (19) en fonction de la vitesse de la variation du niveau de bain.
EP90106625A 1989-05-29 1990-04-06 Procédé et installation pour le remplissage d'un moule de coulée continue avec du métal liquide Expired - Lifetime EP0400302B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3917403A DE3917403C2 (de) 1989-05-29 1989-05-29 Verfahren und Vorrichtung zum Füllen einer Stranggießkokille mit metallischer Schmelze
DE3917403 1989-05-29

Publications (3)

Publication Number Publication Date
EP0400302A2 EP0400302A2 (fr) 1990-12-05
EP0400302A3 EP0400302A3 (fr) 1992-04-22
EP0400302B1 true EP0400302B1 (fr) 1995-08-02

Family

ID=6381579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106625A Expired - Lifetime EP0400302B1 (fr) 1989-05-29 1990-04-06 Procédé et installation pour le remplissage d'un moule de coulée continue avec du métal liquide

Country Status (4)

Country Link
EP (1) EP0400302B1 (fr)
AT (1) ATE125740T1 (fr)
DE (2) DE3917403C2 (fr)
ES (1) ES2077601T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19852289A1 (de) * 1998-11-13 2000-05-25 Messer Austria Gmbh Gumpoldski Verfahren und Einrichtung zur Regulierung von Gießstrahlen
DE102009004613B4 (de) 2009-01-15 2020-01-02 Bayerische Motoren Werke Aktiengesellschaft Reservoir für flüssiges Gussmaterial, insbesondere Stopfenpfanne, sowie Verfahren zum Befüllen einer Stopfenpfanne
CN104001892B (zh) * 2014-06-12 2017-08-11 鞍钢股份有限公司 一种中间包氩气流量的调节方法
EP4192636B1 (fr) * 2020-08-06 2024-02-14 SMS Group GmbH Système pour charger, faire fondre et couler des métaux et des alliages métalliques dans une atmosphère de gaz sous vide et/ou de protection et procédé de fusion et de coulée quasi continues de métal dans une atmosphère de gaz sous vide et/ou de protection
CN114540668B (zh) * 2022-01-21 2022-10-25 中航上大高温合金材料股份有限公司 高纯返回料生产难变形高温合金gh4049的冶炼工艺
CN116855920B (zh) * 2023-09-05 2023-11-21 山西中设华晋铸造有限公司 一种钢带浇铸工艺

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH628543A5 (de) * 1978-06-01 1982-03-15 Concast Ag Verfahren und vorrichtung zum stranggiessen von metall in ein- oder mehrstranganlagen.
ATE21840T1 (de) * 1982-01-18 1986-09-15 Stephen David Mills Halter fuer stopfen von giessgefaessen.
GB8411596D0 (en) * 1984-05-05 1984-06-13 Thor Ceramics Ltd Stopper
JPS6195756A (ja) * 1984-10-16 1986-05-14 Nippon Steel Corp ガス吹込みタンデイツシユ用ストツパ−
US4791978A (en) * 1987-11-25 1988-12-20 Vesuvius Crucible Company Gas permeable stopper rod
DE3817580A1 (de) * 1988-05-24 1989-11-30 Zimmermann & Jansen Gmbh Verfahren zum vergiessen einer metallischen schmelze, insbesondere stahlschmelze, aus einer giesspfanne

Also Published As

Publication number Publication date
EP0400302A2 (fr) 1990-12-05
ES2077601T3 (es) 1995-12-01
EP0400302A3 (fr) 1992-04-22
DE59009459D1 (de) 1995-09-07
ATE125740T1 (de) 1995-08-15
DE3917403C2 (de) 1998-02-05
DE3917403A1 (de) 1990-12-06

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