DE3730300A1 - Method and apparatus for the electromagnetic stirring of metal melts in a continuous casting mould - Google Patents

Method and apparatus for the electromagnetic stirring of metal melts in a continuous casting mould

Info

Publication number
DE3730300A1
DE3730300A1 DE19873730300 DE3730300A DE3730300A1 DE 3730300 A1 DE3730300 A1 DE 3730300A1 DE 19873730300 DE19873730300 DE 19873730300 DE 3730300 A DE3730300 A DE 3730300A DE 3730300 A1 DE3730300 A1 DE 3730300A1
Authority
DE
Germany
Prior art keywords
continuous casting
magnetic field
casting mold
melt
electromagnetic stirring
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
DE19873730300
Other languages
German (de)
Other versions
DE3730300C2 (en
Inventor
Hans-Erwin Gerbig
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 Elotherm GmbH
Original Assignee
AEG Elotherm 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 AEG Elotherm GmbH filed Critical AEG Elotherm GmbH
Priority to DE19873730300 priority Critical patent/DE3730300A1/en
Priority to CA000566497A priority patent/CA1310462C/en
Priority to SE8801983A priority patent/SE466585B/en
Priority to FR8807617A priority patent/FR2620360A1/en
Priority to JP16518988A priority patent/JPS6471557A/en
Publication of DE3730300A1 publication Critical patent/DE3730300A1/en
Application granted granted Critical
Publication of DE3730300C2 publication Critical patent/DE3730300C2/de
Granted legal-status Critical Current

Links

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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields

Abstract

The invention relates to a method for the electromagnetic stirring of metal melts in a continuous casting mould, in which forces that impart rotation to the melt in horizontal planes are introduced into the said melt by the application of a magnetic field. The characteristic of the invention is that the flow of current to the coils generating the magnetic field is alternated in a cycle such that the surface of the melt remains undisturbed.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum elektromagnetischen Rühren von Metallschmelzen in einer Stranggießkokille, bei dem bzw. der eine die Schmelze in Horizontalebenen in Drehung versetzende Magnetkraft eingeleitet wird. Durch diese bekannte Maßnahme soll die Bildung eines dendritischen Gefüges und die Bildung von Lunkern und Seigerungen im Gußstrang verhindert werden.The invention relates to a method and a device for electromagnetic stirring of metal melts in one Continuous casting mold, in which the melt in Magnetic force causing horizontal planes is initiated. Through this known measure, the Formation of a dendritic structure and the formation of Cavities and segregations in the cast strand can be prevented.

Beim elektromagnetischen Rühren in der Stranggießkokille entsteht oft eine starke, unerwünschte Badbewegung im Bereich der Badoberfläche. Beim Gießen unter Schlacke mit Tauchrohr kann es bei einer zu starken Bewegung an der Badoberfläche zu folgenden unerwünschten Erscheinungen kommen:With electromagnetic stirring in the continuous casting mold there is often a strong, undesirable bath movement in the Area of the bath surface. When pouring under slag with Immersion tube can cause excessive movement on the Bath surface to the following undesirable phenomena come:

  • - Schlackeneinschlüsse in der Schmelze- Slag inclusions in the melt
  • - ungenügende Schmierung zwischen Strang und Kokille durch Aufreißen der Badoberfläche- insufficient lubrication between the strand and the mold Tearing open the bathroom surface
  • - Sauerstoffaufnahme aus der Atmosphäre- Oxygen uptake from the atmosphere
  • - starker Verschleiß des Tauchrohres.- heavy wear of the dip tube.

Der Erfindung liegt nun die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zu schaffen, die es ermöglichen sollen, einen ruhigen Badspiegel aufrecht zu erhalten, und dennoch auf die in der Stranggießkokille befindliche Schmelze im Rührbereich, d. h. im Bereich, in dem die Erstarrung einsetzt, zu dem eingangs genannten Zweck intensiv zu rühren. An eine solche Möglichkeit war bislang nicht gedacht worden, weil es zwangsläufig erschien, daß eine Rotationsbewegung der Metallschmelze in der Kokille Auswirkungen bis zum Badspiegelbereich hat und diesen ebenfalls turbulent durchmischt.The invention is based on the object of a method and to create a device that will make it possible are supposed to maintain a calm bathroom mirror, and still on the one in the continuous casting mold Melt in the stirring area, d. H. in the area where the Solidification sets in, for the purpose mentioned at the beginning stir vigorously. So far, there was such a possibility not thought because it inevitably appeared that a rotational movement of the molten metal in the mold Effects up to the bathroom mirror area and this also mixed turbulently.

Durch die Erfindung wird nun eine Lösung der gestellten Aufgabe aufgezeigt, die es ermöglicht, trotz intensiven Rührens der Metallschmelze in der Stranggießkokille im Rührbereich einen ruhigen Badspiegel aufrechtzuerhalten.The invention now provides a solution to the problem Task shown that makes it possible, despite intensive Stirring the molten metal in the continuous casting mold in the Maintain a calm bath level.

Erfindungsgemäß wird dies dadurch erreicht, daß der Stromfluß in der die Schmelze in Rotation versetzenden Spulenanordnung periodisch gewechselt wird und dabei der Zyklus so gewählt wird, daß der Badspiegel unbewegt bleibt, die Schmelze in den Ebenen unterhalb des Badspiegels liegenden Ebenen jedoch intensiv bewegt wird. Die halbe Zykluszeit, innerhalb der es zu einer Änderung des Stromflusses kommt, wird bevorzugt auf 1 bis 4 s eingestellt, bei einer Pause zwischen dem Stromflußwechsel von etwa 0,5 s.According to the invention this is achieved in that the Current flow in the rotating the melt Coil arrangement is changed periodically and the Cycle is selected so that the bath level remains stationary, the melt in the levels below the bath level lying levels is moved intensively. Half Cycle time within which there is a change in the Current flow comes, is preferred to 1 to 4 s set when there is a pause between the current flow changes of about 0.5 s.

Es sei hier angemerkt, daß das Ändern der Stromrichtung beim elektromagnetischen Rühren des Sumpfes innerhalb der Strangführung beim Stranggießen von Stahlbrammen an sich bekannt ist. So wird in der DE-AS 24 01 145 eine solche Verfahrensweise zur Vermeidung von sekundären Weißbändern und von Sekundärdendriten offenbart. Die Zykluszeit, nach der die Stromrichtung gewechselt wird, beträgt nach der Lehre dieser Schrift 5 bis 30 s. Maßnahmen zur Vermeidung einer Bewegung des Badspiegels während des Rührens sind dort nicht offenbart.It should be noted here that changing the current direction with electromagnetic stirring of the swamp within the Strand guidance when continuously casting steel slabs  is known. So in DE-AS 24 01 145 such How to avoid secondary white tapes and disclosed by secondary dendrites. The cycle time, after the direction of the current is changed after Teach this script 5 to 30 s. Actions to avoid a movement of the bath level while stirring are there not revealed.

Falls es mit den vorgenannten Mitteln allein nicht möglich ist, trotz intensiven Rührens der Schmelze im Rührbereich in der Stranggießkokille eine unbewegte Badoberfläche einzustellen, soll gemäß einer vorteilhaften Ausgestaltung des erfindungsgemäßen Verfahrens in Abhängigkeit von den das Magnetfeld kennzeichnenden Größen (Feldstärke, Frequenz) und den die Schmelzenrotation beeinflussenden Parametern, insbesondere Zähigkeit der Schmelze, Kokillengeometrie und -material, die Höhenlage der das Magnetfeld erzeugenden Spulen gegenüber dem Badspiegel der Schmelze in der Stranggießkokille so eingestellt werden, daß der Badspiegel beim Rühren unbewegt bleibt. Es kommen also folgende praktische Lösungen bei Durchführung des erfindungsgemäßen Verfahrens in Betracht:If it is not possible with the aforementioned means alone is in spite of intensive stirring of the melt in the stirring area the continuous casting mold has a stationary bath surface should set according to an advantageous embodiment of the method according to the invention depending on the Magnetic field characteristic quantities (field strength, frequency) and the parameters influencing the melt rotation, in particular melt viscosity, mold geometry and -material, the altitude of the magnetic field generating Coils opposite the bath level of the melt in the Continuous casting mold can be set so that the bath level remains motionless while stirring. So there are the following practical solutions when performing the invention Procedure considered:

  • 1. Periodisches Ändern der Stromrichtung,1. Periodically changing the current direction,
  • 2. periodisches Ändern der Stromrichtung und der des Spulenstromflusses,2. periodically changing the current direction and that of Coil current flow,
  • 3. Periodisches Ändern des Stromflusses des elektromagnetischen Feldes in Verbindung mit einem Justieren der Höhenlage der elektrischen Spulenanordung an der Stranggießkokille.3. Periodically changing the current flow of the electromagnetic field in connection with a Adjust the height of the electrical Coil arrangement on the continuous casting mold.

Mit den angegebenen Mitteln wird die Aufgabe in einfacher Weise gelöst, eine Metallschmelze in einer Stranggießkokille intensiv im Rührbereich zu rühren, dabei aber den Badspiegel unbewegt zu lassen.With the means specified, the task becomes easier Solved way, a molten metal in a continuous casting mold to stir intensively in the stirring area, but the bath level leave unmoved.

In der Zeichnung ist ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung zum Erzeugen eines elektromagnetischen Magnetfeldes im Bereich einer Stranggießkokille, mit der das erfindungsgemäße Verfahren ausführbar ist, schematisch dargestellt.In the drawing, an embodiment of the Device according to the invention for generating a electromagnetic magnetic field in the range Continuous casting mold with which the inventive method is executable, shown schematically.

Fig. 1 zeigt einen Längsschnitt und Fig. 1 shows a longitudinal section and

Fig. 2 einen Querschnitt. Fig. 2 shows a cross section.

Um die Stranggießkokille 1, in die das Tauchrohr 2 mündet, durch das Schmelze 3 in die Stranggießkokille 1 gelangt, ist eine Spulenanordnung 4 zum elektromagnetischen Rühren der Schmelze 3 in der Stranggießkokille 1 dieser gegenüber höhenverstellbar gelagert. Die Spulenanordnung 4 besteht aus sechs am Umfang der Kokille 1 gleichmäßig verteilt angeordnete Spulen 5, die um Eisenpole 6 liegen, die einen gemeinsamen Rückschlußring 7 haben, der von einem Blechmantel 8 umgeben ist. Die Spulenanordnung 4 ist mit einem Polumschalter P und gegebenenfalls mit einem Frequenzwandler F gekoppelt.Around the continuous casting mold 1 , into which the immersion tube 2 opens, passes through the melt 3 into the continuous casting mold 1 , a coil arrangement 4 for the electromagnetic stirring of the melt 3 in the continuous casting mold 1 is mounted such that it can be adjusted in height relative to it. The coil arrangement 4 consists of six coils 5 arranged uniformly distributed on the circumference of the mold 1 and lying around iron poles 6 , which have a common yoke ring 7 which is surrounded by a sheet metal jacket 8 . The coil arrangement 4 is coupled to a pole changeover switch P and optionally to a frequency converter F.

Beispiel 1example 1

Eine Stranggießkokille aus Kupfer mit einer Wandstärke von 10 mm ist umgeben von einer Rotationsrührspule mit den Abmessungen: Innendurchmesser von 515 mm, Außendurchmesser von 870 mm und 490 mm Höhe, die auf einer Höhe von etwa 200 mm unterhalb dem Badspiegel der Schmelze in der Stranggießkokille eingerichtet wurde. Der Spulenstrom wurde auf 400 A und die Frequenz auf 6 Hz eingestellt. Die Rührzeit in jeder Richtung betrug 3 s mit einer Pause zwischen den Stromrichtungswechseln von 0,5 s.A continuous casting mold made of copper with a wall thickness of 10 mm is surrounded by a rotary stirring coil with the Dimensions: inner diameter of 515 mm, outer diameter of 870 mm and 490 mm in height, which are at a height of approximately 200 mm below the bath level of the melt in the Continuous casting mold was set up. The coil current was set to 400 A and the frequency to 6 Hz. The Mixing time in each direction was 3 s with a break between the current direction changes of 0.5 s.

Claims (4)

1. Verfahren zum elektromagnetischen Rühren von Metallschmelzen in einer Stranggießkokille bei dem durch Anlegen eines Magnetfeldes Kräfte in die Schmelze eingeleitet werden, welche diese in Horizontalebenen in Drehung versetzen, dadurch gekennzeichnet, daß der Stromfluß zu den das Magnetfeld erzeugenden Spulen in einem derartigen Zyklus gewechselt wird, daß der Badspiegel unbewegt bleibt.1. A method for the electromagnetic stirring of metal melts in a continuous casting mold in which forces are introduced into the melt by applying a magnetic field, which forces them to rotate in horizontal planes, characterized in that the current flow is changed to the coils generating the magnetic field in such a cycle that the bathroom mirror remains motionless. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Zykluszeit auf 1 bis 4 s eingestellt wird.2. The method according to claim 1, characterized in that the Cycle time is set to 1 to 4 s. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in Abhängigkeit von den das Magnetfeld kennzeichnenden Größen (Feldstärke, Frequenz) und den die Schmelzenrotation beeinflussenden Parametern, insbesondere Zähigkeit der Schmelze, Kokillengeometrie und -material, die Höhenlage der das Magnetfeld erzeugenden Spulenanordnung so eingestellt wird, daß der Badspiegel unbewegt bleibt. 3. The method according to claim 1 or 2, characterized in that in Dependence on those characterizing the magnetic field Sizes (field strength, frequency) and the Parameters influencing melt rotation, especially melt viscosity, mold geometry and material, the altitude of the magnetic field generating coil assembly is set so that the bathroom mirror remains motionless.   4. Vorrichtung zum Erzeugen eines elektromagnetischen Magnetfeldes im Bereich einer Stranggießkokille zur Ausführung des Verfahrens nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß sie aus einer die Stranggießkokille (1) in einer Horizontalebene umgebenden, gegenüber der Stranggießkokille (1) höhenverstellbar gelagerten Spulenanordnung (4) besteht, die mit einem Polumschalter (P) zur Stromdrehrichtungsänderung und gegebenenfalls einem Frequenzwandler (F) ausgestattet ist.4. Apparatus for generating an electromagnetic magnetic field in the area of a continuous casting mold for carrying out the method according to one of claims 1 to 3, characterized in that it comprises a coil arrangement which is vertically adjustable relative to the continuous casting mold ( 1 ) and which is surrounding the continuous casting mold ( 1 ) in a horizontal plane ( 4 ), which is equipped with a pole switch (P) for changing the direction of current rotation and, if necessary, a frequency converter (F) .
DE19873730300 1987-09-10 1987-09-10 Method and apparatus for the electromagnetic stirring of metal melts in a continuous casting mould Granted DE3730300A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19873730300 DE3730300A1 (en) 1987-09-10 1987-09-10 Method and apparatus for the electromagnetic stirring of metal melts in a continuous casting mould
CA000566497A CA1310462C (en) 1987-09-10 1988-05-11 Process and apparatus for the electromagnetic stirring of metal melts in a continuous casting chill mould
SE8801983A SE466585B (en) 1987-09-10 1988-05-27 PROCEDURES FOR ELECTROMAGNETIC STIRRING OF METAL MELTOR
FR8807617A FR2620360A1 (en) 1987-09-10 1988-06-08 METHOD AND DEVICE FOR ELECTROMAGNETIC STIRRING OF FUSION BATHS IN A CONTINUOUS CASTING MOLD
JP16518988A JPS6471557A (en) 1987-09-10 1988-07-04 Method and device for electromagnetically agitating molten metal in continuous casting cooling mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873730300 DE3730300A1 (en) 1987-09-10 1987-09-10 Method and apparatus for the electromagnetic stirring of metal melts in a continuous casting mould

Publications (2)

Publication Number Publication Date
DE3730300A1 true DE3730300A1 (en) 1989-03-23
DE3730300C2 DE3730300C2 (en) 1989-08-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873730300 Granted DE3730300A1 (en) 1987-09-10 1987-09-10 Method and apparatus for the electromagnetic stirring of metal melts in a continuous casting mould

Country Status (5)

Country Link
JP (1) JPS6471557A (en)
CA (1) CA1310462C (en)
DE (1) DE3730300A1 (en)
FR (1) FR2620360A1 (en)
SE (1) SE466585B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843354C1 (en) * 1998-09-22 2000-03-09 Ald Vacuum Techn Gmbh Apparatus for oriented solidification of a metal melt cast into a mold shell comprises guide sheets in the liquid metal cooling bath for purposes of controlling the bath flow produced by magnetic fields
WO2009018809A1 (en) 2007-08-03 2009-02-12 Forschungszentrum Dresden-Rossendorf E.V. Method and device for the electromagnetic stirring of electrically conductive fluids
WO2009018810A1 (en) 2007-08-03 2009-02-12 Forschungszentrum Dresden - Rossendorf E.V. Method and device for the electromagnetic stirring of electrically conductive fluids
DE102010041061A1 (en) 2010-09-20 2012-03-22 Forschungsverbund Berlin E.V. Crystallization plant and crystallization process for producing a block from a material whose melt is electrically conductive

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03110059A (en) * 1989-09-22 1991-05-10 Kawasaki Steel Corp Method and apparatus for removing impurity in molten metal
LU87914A1 (en) † 1991-04-03 1992-11-16 Wurth Paul Sa ELECTROMAGNETIC LINGOTINE BREWING DEVICE
EP0972591B1 (en) 1997-12-08 2007-07-25 Nippon Steel Corporation Method and apparatus for casting molten metal, and cast piece
KR100423427B1 (en) * 1999-12-14 2004-03-19 주식회사 포스코 Method for electro-magnetic stirring molten steel to reducing center segregation at continuous casting
WO2003022523A1 (en) 2001-09-10 2003-03-20 Nikon Corporation Dressing tool, dressing device, dressing method, processing device, and semiconductor device producing method
DE102008055034A1 (en) * 2008-12-19 2010-07-01 Forschungszentrum Dresden - Rossendorf E.V. Method and arrangement for contactless determination of velocity distributions of a liquid metal in a continuous casting mold
RU2743437C1 (en) * 2020-04-30 2021-02-18 Общество с ограниченной ответственностью "Научно-производственный центр магнитной гидродинамики" Device for electromagnetic mixing of liquid core of ingot in crystallizer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT185039B (en) * 1953-01-23 1956-03-26 Boehler & Co Ag Geb Process for casting, in particular metals
US3153820A (en) * 1961-10-09 1964-10-27 Charles B Criner Apparatus for improving metal structure
DE2401145B2 (en) * 1973-04-18 1980-05-08 Nippon Steel Corp., Tokio Method for electromagnetic stirring of the sump during continuous casting

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128056C2 (en) * 1981-07-16 1983-05-26 Mannesmann AG, 4000 Düsseldorf Process for promoting nucleation when cooling metallic melts, in particular steel melts

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT185039B (en) * 1953-01-23 1956-03-26 Boehler & Co Ag Geb Process for casting, in particular metals
US3153820A (en) * 1961-10-09 1964-10-27 Charles B Criner Apparatus for improving metal structure
DE2401145B2 (en) * 1973-04-18 1980-05-08 Nippon Steel Corp., Tokio Method for electromagnetic stirring of the sump during continuous casting

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HERMANN, E.: Handbuch des Stranggießens, 1958, S. 425 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843354C1 (en) * 1998-09-22 2000-03-09 Ald Vacuum Techn Gmbh Apparatus for oriented solidification of a metal melt cast into a mold shell comprises guide sheets in the liquid metal cooling bath for purposes of controlling the bath flow produced by magnetic fields
WO2009018809A1 (en) 2007-08-03 2009-02-12 Forschungszentrum Dresden-Rossendorf E.V. Method and device for the electromagnetic stirring of electrically conductive fluids
WO2009018810A1 (en) 2007-08-03 2009-02-12 Forschungszentrum Dresden - Rossendorf E.V. Method and device for the electromagnetic stirring of electrically conductive fluids
DE102007037340A1 (en) 2007-08-03 2009-02-19 Forschungszentrum Dresden - Rossendorf E.V. Method and device for the electromagnetic stirring of electrically conductive liquids
DE102007038281A1 (en) 2007-08-03 2009-02-19 Forschungszentrum Dresden - Rossendorf E.V. Method and device for the electromagnetic stirring of electrically conductive liquids
DE102007038281B4 (en) * 2007-08-03 2009-06-18 Forschungszentrum Dresden - Rossendorf E.V. Method and device for the electromagnetic stirring of electrically conductive liquids
DE102007037340B4 (en) * 2007-08-03 2010-02-25 Forschungszentrum Dresden - Rossendorf E.V. Method and device for the electromagnetic stirring of electrically conductive liquids
US8944142B2 (en) 2007-08-03 2015-02-03 Helmholtz-Zentrum Dresden-Rossendorf E.V. Method and device for the electromagnetic stirring of electrically conductive fluids
DE102010041061A1 (en) 2010-09-20 2012-03-22 Forschungsverbund Berlin E.V. Crystallization plant and crystallization process for producing a block from a material whose melt is electrically conductive
WO2012038432A1 (en) 2010-09-20 2012-03-29 Forschungsverbund Berlin E.V. Crystallization system and crystallization process for producing a block from a material with an electrically conductive molten mass

Also Published As

Publication number Publication date
SE466585B (en) 1992-03-09
JPS6471557A (en) 1989-03-16
SE8801983L (en) 1989-03-11
CA1310462C (en) 1992-11-24
SE8801983D0 (en) 1988-05-27
DE3730300C2 (en) 1989-08-10
FR2620360A1 (en) 1989-03-17

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