EP0400302A2 - 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
EP0400302A2
EP0400302A2 EP90106625A EP90106625A EP0400302A2 EP 0400302 A2 EP0400302 A2 EP 0400302A2 EP 90106625 A EP90106625 A EP 90106625A EP 90106625 A EP90106625 A EP 90106625A EP 0400302 A2 EP0400302 A2 EP 0400302A2
Authority
EP
European Patent Office
Prior art keywords
bath level
continuous casting
casting mold
stopper
bottom opening
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
EP90106625A
Other languages
German (de)
English (en)
Other versions
EP0400302A3 (fr
EP0400302B1 (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 inflatable.
  • 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 creating 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 target value, 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, whereby 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 overall a constant strand withdrawal speed is guaranteed.
  • 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 one of the Darge placed ladle molten metal 10 is supplied.
  • the spout on 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 stopper 11 can be raised and lowered in the metallurgical vessel 13 via a crossmember 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 into a closed position or a predetermined opening or throttling position by a mechanical, pneumatic, hydraulic or electromotive drive 24, the drive 24 reacting to a bath level signal supplied by the scintillation counter 20, such that that when the bath level 14 rises in relation to a predetermined set point, the opening degree of the valve 19 is increased, and vice versa, so that when the bath level 14 rises in relation to a predetermined set point, 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 in this, which determines whether the bath level height 14 in the mold 15 is still within the predefined setpoint range. If this is exceeded, the stopper is readjusted 11.
  • the corresponding signal for the plug drive, not shown, is identified by reference number 33.
  • the system described is based on the knowledge that the argon melted in the bottom opening area holds back 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 within the predetermined setpoint range is possible without additional readjustment of the stopper position. With the help of the measures described, the bath level setpoint band can be widened 2 to 3 times compared to the conventional setpoint band.
  • 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 at a setpoint value, no, 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 wise (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)
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 true EP0400302A2 (fr) 1990-12-05
EP0400302A3 EP0400302A3 (fr) 1992-04-22
EP0400302B1 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114540668A (zh) * 2022-01-21 2022-05-27 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
CN116855920A (zh) * 2023-09-05 2023-10-10 山西中设华晋铸造有限公司 一种钢带浇铸工艺

Families Citing this family (4)

* 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
WO2022029301A1 (fr) * 2020-08-06 2022-02-10 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, dispositif de scellement d'un appareil de coulée par induction sous vide et procédé de fusion et de coulée quasi continues de métal dans une atmosphère de gaz sous vide et/ou de protection

Family Cites Families (5)

* 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
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114540668A (zh) * 2022-01-21 2022-05-27 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
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
CN116855920A (zh) * 2023-09-05 2023-10-10 山西中设华晋铸造有限公司 一种钢带浇铸工艺
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

Also Published As

Publication number Publication date
DE3917403C2 (de) 1998-02-05
EP0400302A3 (fr) 1992-04-22
EP0400302B1 (fr) 1995-08-02
ATE125740T1 (de) 1995-08-15
ES2077601T3 (es) 1995-12-01
DE59009459D1 (de) 1995-09-07
DE3917403A1 (de) 1990-12-06

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