EP0144795B1 - Procédé d'oscillation d'un moule horizontal de coulée continue pour métaux, en particulier l'acier - Google Patents

Procédé d'oscillation d'un moule horizontal de coulée continue pour métaux, en particulier l'acier Download PDF

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Publication number
EP0144795B1
EP0144795B1 EP84113517A EP84113517A EP0144795B1 EP 0144795 B1 EP0144795 B1 EP 0144795B1 EP 84113517 A EP84113517 A EP 84113517A EP 84113517 A EP84113517 A EP 84113517A EP 0144795 B1 EP0144795 B1 EP 0144795B1
Authority
EP
European Patent Office
Prior art keywords
casting
mold
strand
mould
oscillation frequency
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
Application number
EP84113517A
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German (de)
English (en)
Other versions
EP0144795A2 (fr
EP0144795A3 (en
Inventor
Erling Dr. Roller
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.)
CESSIONE;MANNESMANN AG
Original Assignee
Fried Krupp 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 Fried Krupp AG filed Critical Fried Krupp AG
Priority to AT84113517T priority Critical patent/ATE26549T1/de
Publication of EP0144795A2 publication Critical patent/EP0144795A2/fr
Publication of EP0144795A3 publication Critical patent/EP0144795A3/de
Application granted granted Critical
Publication of EP0144795B1 publication Critical patent/EP0144795B1/fr
Expired 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/053—Means for oscillating the moulds

Definitions

  • the invention relates to a method for oscillating an inherently rigid horizontal continuous casting mold for metals, in particular steel, which carries out sinusoidally oscillating lifting movements in the casting direction and the counter-casting direction, the strand being drawn off continuously.
  • the method of the type mentioned is carried out, for example, in a horizontal continuous casting installation, which is described in DE-OS 27 37 835.
  • the continuous casting mold together with the upstream storage container, is a movable, mounted unit, the casting cavity of the rigid casting mold, which is rigid in itself, having a cross-sectional reduction on its sprue side.
  • the known horizontal continuous caster is also equipped with an oscillation drive, via which the mold stroke between 0 to 5 mm and the mold oscillation frequency between 0 to 500 / min. is adjustable.
  • Horizontal continuous casting molds generally have the disadvantage that the cast products produced have a lower surface quality than the products of vertical continuous casting molds. This depends u. a. together with the use of a tear-off ring arranged between the storage container and the continuous casting mold, which represents a narrowing of the casting cavity. Since the formation of the strand shell begins at the connection point between the tear-off ring and the continuous casting mold, when it oscillates in the casting direction, it has the effect of a piston which compresses the strand shell.
  • furnace-independent continuous casting molds which include the circular molds as well as the circular molds
  • act like a sleeve i. H. the strand shell is only compressed until a relative movement occurs between these components after the friction between the strand shell and the continuous casting mold has been overcome.
  • the points of view that must be taken into account when designing vertical or circular arc molds cannot be transferred to the conditions in horizontal continuous casting (cf. DE-OS 31 37119).
  • the invention is based on the object of specifying an oscillation method for an oscillating horizontal continuous casting mold which operates with a continuous extrusion movement and which, with justifiable technical outlay, enables the production of a cast product with improved quality.
  • the strand to be produced should not have a flaky surface or deep imperfections, which may require pretreatment of the strand surface before further processing.
  • the process is primarily intended to enable the processing of steel; however, it can easily be used in the manufacture of strands from other metals.
  • the method according to the invention then leaves the path which experts have taken for a long time to work with an intermittent strand withdrawal movement despite the increased economic and technical effort involved.
  • the method of the second-mentioned document works without recoil of the strand in the direction of the horizontal continuous casting mold; however, it involves considerable additional effort in that, in addition, for example by moving the horizontal continuous casting mold, shock-like impulses are transmitted to the strand in the casting direction. If the known method works with superimposition of the strand pulling and impulse movement, the horizontal continuous casting mold no longer leads. Apart from the other differences, the information about the path to be covered when generating the impulse does not indicate that compliance with a compression path of the order of magnitude of at most a few tenths of a millimeter is important.
  • the method according to the invention assumes that a good strand surface can only be achieved if the speed of the horizontal continuous casting mold in the casting direction is greater than the casting speed (corresponding to the strand withdrawal speed).
  • This requirement can be taken into account in that by mutually coordinating the three variable variables - mold oscillation frequency, mold stroke and casting speed - a minimum value of 2hr is maintained for the average advance of the continuous casting mold with respect to the strand, corresponding to approximately 0.64.
  • the three sizes mentioned are chosen so that the compression path, ie the distance covered during the advance of the continuous casting mold with respect to the strand in the casting direction, is at most 1 mm, preferably even only 0.1 to 0.5 mm.
  • the process is otherwise carried out so that the mold oscillation frequency has a minimum value of about 100 / min. not less.
  • the strand-shell growth element formed during an oscillation process has only a low degree of solidification and, consequently, has no deep defect after being detached from the tear-off ring.
  • a minimum oscillation frequency of 120 / min is preferred. used (claim 2).
  • the mold stroke carried out during an oscillation process should be at most 6 mm, preferably at most 5 mm (claim 3).
  • the method according to the invention is expediently carried out in such a way that the mold stroke is even set to only 2 to 4 mm at the minimum oscillation frequency.
  • the three variable sizes of mold oscillation frequency, mold stroke and casting speed depend on each other in such a way to coordinate that both the minimum value of the advance and the maximum value of the compression path are observed; this can be achieved by specifying the relevant quantities via a process computer.
  • the horizontal continuous casting mold which is suitable for carrying out the method according to the invention consequently has an oscillation drive which can be set to the required extent with regard to the mold oscillation frequency and mold stroke; moreover, the associated strand take-off drive must be designed in such a way that the strand take-off speed representing the casting speed can be varied within a sufficiently wide range.
  • the required values for the advance and the compression path can only be maintained if the mold oscillation frequency is between 120 to 200 / min. is or more than 250 / min. is.
  • the mold oscillation frequency is in the range between approximately 110 to 150 or 130 to 200 or 160 to 270 or above 320 / min. must lie.
  • the exemplary embodiments show that at a given casting speed (corresponding to the strand withdrawal speed), taking into account the required magnitude of the advance and the compression path, the higher values of the mold oscillation frequency to be aimed for can be achieved if a relatively small mold stroke is used. A reduction in the mold stroke also leads to an increase in the suitable range of the mold oscillation frequency.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Vehicle Body Suspensions (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Forging (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Claims (5)

1. Procédé d'oscillation d'un moule horizontal de coulée continue pour métaux, en particulier pour l'acier, qui effectue des mouvements d'oscillation sinusoïdale dans le sens de la coulée et dans le sens inverse de celui de la coulée tandis que la barre est tirée d'une manière continue, caractérisé en ce que, pour une valeur minimale de la fréquence f d'oscillation du moule de 100/mm environ, dont la grandeur est coordonnée avec celle de la course H (mm) du moule et de la vitesse Vo (m/min.) de coulée de telle manière que l'avance moyenne (2 fHNo) du moule de coulée continue par rapport à la barre coulée ait la valeur minimale de 0,64 et en ce que le trajet de refoulement, c'est-à-dire la distance parcourue dans le sens de la coulée pendant l'avance du moule de coulée continue par rapport à la barre coulée, soit de 1 mm au maximum.
2. Procédé selon la revendication 1, caractérisé en ce que le trajet de refoulement est de 0,1 à 0,5 mm.
3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que l'on utilise une fréquence d'oscillation minimale f de 120/min.
4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que l'on utilise une course de moule H de 6 mm au maximum, de préférence de 5 mm au maximum.
5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que les grandeurs variables que sont la fréquence f d'oscillation du moule, la course H du moule et la vitesse de coulée Vo sont coordonnées au moyen d'un ordinateur en fonction de la vitesse de coulée, de telle manière que, abstraction faite de l'intervalle de temps qui suit immédiatement le début de la coulée et de celui qui précède immédiatement la fin de la coulée, la valeur minimale de l'avance et la valeur maximale du trajet de refoulement sont simultanément maintenues.
EP84113517A 1983-12-01 1984-11-09 Procédé d'oscillation d'un moule horizontal de coulée continue pour métaux, en particulier l'acier Expired EP0144795B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84113517T ATE26549T1 (de) 1983-12-01 1984-11-09 Verfahren zum oszillieren einer in sich starren horizontal stranggiesskokille fuer metalle, insbesondere stahl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3343479 1983-12-01
DE3343479A DE3343479C1 (de) 1983-12-01 1983-12-01 Verfahren zum Oszillieren einer in sich starren Horizontal-Stranggiesskokille fuer Metalle,insbesondere Stahl

Publications (3)

Publication Number Publication Date
EP0144795A2 EP0144795A2 (fr) 1985-06-19
EP0144795A3 EP0144795A3 (en) 1985-07-10
EP0144795B1 true EP0144795B1 (fr) 1987-04-15

Family

ID=6215765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84113517A Expired EP0144795B1 (fr) 1983-12-01 1984-11-09 Procédé d'oscillation d'un moule horizontal de coulée continue pour métaux, en particulier l'acier

Country Status (8)

Country Link
US (1) US4602671A (fr)
EP (1) EP0144795B1 (fr)
JP (1) JPS60133962A (fr)
AT (1) ATE26549T1 (fr)
AU (1) AU565781B2 (fr)
CA (1) CA1254714A (fr)
DE (1) DE3343479C1 (fr)
ES (1) ES8600095A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3526935A1 (de) * 1985-07-27 1987-02-05 Mannesmann Ag Verfahren zum horizontalen stranggiessen von metallen, insbesondere von stahl
JP2663126B2 (ja) * 1987-12-22 1997-10-15 川崎製鉄株式会社 双方向引抜型水平連続鋳造方法
EP0325931B1 (fr) * 1988-01-28 1992-04-22 Clecim Procédé et dispositif pour l'oscillation d'une lingotière pour la coulée continue
DE19854329A1 (de) * 1998-11-25 2000-05-31 Schloemann Siemag Ag Verfahren zum Oszillieren einer Stranggießkokille mittels variabler Oszillationsparameter
FR2835208B3 (fr) * 2002-01-28 2003-12-26 Usinor Procede de coulee continue des metaux en lingotiere oscillante
WO2007070650A2 (fr) 2005-12-14 2007-06-21 3M Innovative Properties Company Films antimicrobiens adhesifs
EP2905093B1 (fr) * 2014-02-07 2018-08-29 SMS Concast AG Système de lingotière pour la coulée en continu de produits métalliques
CN103894573B (zh) * 2014-03-20 2016-05-25 攀钢集团攀枝花钢钒有限公司 减少连铸机漏钢的控制方法
CN111644586B (zh) * 2020-06-11 2021-06-29 中冶南方连铸技术工程有限责任公司 确定结晶器最优振动参数的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3857437A (en) * 1973-03-22 1974-12-31 Technicon Instr Method and apparatus for continuously casting metals
DE2737835A1 (de) * 1977-08-23 1979-03-08 Krupp Gmbh Horizontal-stranggiessanlage fuer kupfer und kupferlegierungen
DE2805277A1 (de) * 1978-02-08 1979-08-09 Kabel Metallwerke Ghh Verfahren zum stranggiessen von metallen
JPS57187145A (en) * 1981-05-12 1982-11-17 Kawasaki Steel Corp Continuous casting method for ingot of superior surface characteristic
DE3137119C2 (de) * 1981-09-18 1983-07-28 Mannesmann AG, 4000 Düsseldorf Verfahren und Vorrichtung zum Horizontalstranggießen von Metallen, insbesondere von Stahl
DE3148033A1 (de) * 1981-12-04 1983-06-09 Realid GmbH, 4050 Mönchengladbach Ausziehmaschine fuer horizontale stranggiessanlage

Also Published As

Publication number Publication date
US4602671A (en) 1986-07-29
ATE26549T1 (de) 1987-05-15
JPH0558825B2 (fr) 1993-08-27
AU565781B2 (en) 1987-09-24
EP0144795A2 (fr) 1985-06-19
ES537955A0 (es) 1985-10-01
JPS60133962A (ja) 1985-07-17
EP0144795A3 (en) 1985-07-10
DE3343479C1 (de) 1984-08-23
ES8600095A1 (es) 1985-10-01
AU3592884A (en) 1985-06-06
CA1254714A (fr) 1989-05-30

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