EP0815987A1 - Agitateur et frein électromagnétique d'une installation de coulée continu - Google Patents

Agitateur et frein électromagnétique d'une installation de coulée continu Download PDF

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Publication number
EP0815987A1
EP0815987A1 EP97109530A EP97109530A EP0815987A1 EP 0815987 A1 EP0815987 A1 EP 0815987A1 EP 97109530 A EP97109530 A EP 97109530A EP 97109530 A EP97109530 A EP 97109530A EP 0815987 A1 EP0815987 A1 EP 0815987A1
Authority
EP
European Patent Office
Prior art keywords
continuous casting
magnetic field
steel
linear motor
caster according
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.)
Withdrawn
Application number
EP97109530A
Other languages
German (de)
English (en)
Inventor
Horst Grothe
Hans-Peter Kaiser
Ronald Brosch
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 Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag 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
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0815987A1 publication Critical patent/EP0815987A1/fr
Withdrawn legal-status Critical Current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
    • B22D11/10—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

Definitions

  • the invention relates to a continuous caster with at least one formed in the area of the liquid steel strand inside Magnetic field.
  • the technological background of the invention is the improvement the structure of steel in continuous casting. Will the Pouring temperature when casting continuously with caution in narrow Given limits, this can adversely affect the casting structure impact. In particular, overheating in the liquid metal area can the formation of cavities and others Favoring defects in the steel. The uneven is reinforced Temperature distribution in the liquid metal area through the with great energy into the mold and thus the liquid metal area inflowing liquid steel.
  • the invention is based on this prior art the task, an improved calming of the steel bath, a further reduction in turbulence and thus to achieve an improved structure of the steel.
  • the solution to this task is based on the idea of high Energy of the liquid steel penetrating deep into the strand compensate.
  • this problem is solved in that at a Continuous caster of the type mentioned on one broadside of the steel strand at least transversely to its direction of movement a linear motor with at least one induction comb and a reaction rail is arranged, the liquid Steel forms the movable reaction rail.
  • the arrangement of the linear motor transverse to the direction of movement Steel strand influences depending on the width of the Stahlstranges the cross flow so that the on the already solidified narrow sides of the strand Liquid steel electricity no longer has a vertical component upwards or forms down.
  • the kind of an induction pump Working linear motor prevents the molten steel can penetrate deep into the strand. As a result, remain Contamination in the strand further up in the direction of the metal feed.
  • the linear motor exists as usual from the primary part, also called induction comb and the secondary section, which is also used as a reaction rail referred to as.
  • the induction comb carries three-phase windings, into which a three-phase current is fed, whereby a longitudinal progressive magnetic field (traveling field) is formed.
  • the traveling field induced in the reaction rail by that liquid steel is formed electrical AC voltages.
  • the associated eddy currents and the magnetic traveling field form forces that the liquid steel in the Direction of progress of the hiking field opposite direction move.
  • the reaction rail as usual with linear motors, with ferromagnetic Material to be deposited.
  • each linear motor arranged on the continuous casting mold makes it possible to place a magnet underneath the continuous casting mold to arrange with a stationary magnetic field, for example, as described above, is generated conductively. This opposite The magnetic field stationary in the traveling field reduces the im Distance from the narrow sides of vertical currents still present of the liquid steel flow and therefore leads to a further improvement of the structure of the cast product.
  • Continuously arranged die casting mold 1 consists of Broad sides 2, 3 attached copper plates 4, 5, on which attached to the total designated 6, 7 linear motors are. Above and below the linear motors 6, 7 are the Water boxes 8, 9 can be seen (Figure 3).
  • the two double-sided linear motors 6, 7 each exist from an induction comb arranged on one broad side 3 11 or 12 and a second one on the opposite Further induction comb 13 arranged on broadside 2 or 14, which takes over the magnetic inference.
  • Any induction comb 11, 12, 13, 14 carries windings 15, 16, 17, 18, into which a three-phase current is fed.
  • the one in the three-phase windings 15, 16, 17, 18 fed three-phase current produces a progressing transversely to the direction of movement of the strand magnetic traveling field that in one of the liquid steel formed reaction rail 22 electrical AC voltages induced.
  • the linked with the induced AC voltages Eddy currents and the magnetic traveling field form forces in the molten steel that affect the cross flow of the inflowing steel so influence that on the Narrow sides 19, 21 of the solidified strand striking Liquid steel flow no vertical component v upwards or has more at the bottom, as indicated in the view in FIG is.
  • the adjustable narrow sides 19, 21 allow it to change the width of the strand; in Fig. 1 are with "Min” and "Max" indicate the smallest and largest strand width.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP97109530A 1996-06-28 1997-06-12 Agitateur et frein électromagnétique d'une installation de coulée continu Withdrawn EP0815987A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996125933 DE19625933A1 (de) 1996-06-28 1996-06-28 Rührer und Bremse für Stanggießanlage
DE19625933 1996-06-28

Publications (1)

Publication Number Publication Date
EP0815987A1 true EP0815987A1 (fr) 1998-01-07

Family

ID=7798284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97109530A Withdrawn EP0815987A1 (fr) 1996-06-28 1997-06-12 Agitateur et frein électromagnétique d'une installation de coulée continu

Country Status (2)

Country Link
EP (1) EP0815987A1 (fr)
DE (1) DE19625933A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3134220B1 (fr) 2014-04-25 2019-09-04 ThyssenKrupp Steel Europe AG Procédé et dispositif de coulée continue de brames minces

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0015301A1 (fr) * 1979-03-13 1980-09-17 Licentia Patent-Verwaltungs-GmbH Procédé et dispositif de brassage électromagnétique du cratère liquide d'une brame métallique sortant de la lingotière et passant entre les rouleaux d'un corset de guidage
JPS5933061A (ja) * 1982-08-19 1984-02-22 Sumitomo Metal Ind Ltd 連続鋳造用電磁撹「はん」装置
FR2550717A1 (fr) * 1983-08-17 1985-02-22 Sumitomo Metal Ind Agitateur electromagnetique
WO1985000769A1 (fr) * 1983-08-11 1985-02-28 Kawasaki Steel Corporation Procede de brassage electromagnetique de l'acier en fusion dans un moule de coulee en continu

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0015301A1 (fr) * 1979-03-13 1980-09-17 Licentia Patent-Verwaltungs-GmbH Procédé et dispositif de brassage électromagnétique du cratère liquide d'une brame métallique sortant de la lingotière et passant entre les rouleaux d'un corset de guidage
JPS5933061A (ja) * 1982-08-19 1984-02-22 Sumitomo Metal Ind Ltd 連続鋳造用電磁撹「はん」装置
WO1985000769A1 (fr) * 1983-08-11 1985-02-28 Kawasaki Steel Corporation Procede de brassage electromagnetique de l'acier en fusion dans un moule de coulee en continu
FR2550717A1 (fr) * 1983-08-17 1985-02-22 Sumitomo Metal Ind Agitateur electromagnetique

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DIFFERENT AUTHORS: "Metallurgie des Stranggiessens", 1993, K. SCHWERDTFEGER, DÜSSELDORF, DE, XP002039889 *
PATENT ABSTRACTS OF JAPAN vol. 008, no. 132 (M - 303) 20 June 1984 (1984-06-20) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3134220B1 (fr) 2014-04-25 2019-09-04 ThyssenKrupp Steel Europe AG Procédé et dispositif de coulée continue de brames minces

Also Published As

Publication number Publication date
DE19625933A1 (de) 1998-01-08

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): AT BE DE ES FR GB IT NL

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BROSCH, RONALD

Inventor name: KAISER, HANS-PETER

Inventor name: GROTHE, HORST

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Owner name: SMS DEMAG AG

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Effective date: 20000411