EP0213060B1 - Verfahren und Auszieheinrichtung zum Horizontalstranggiessen von Metall, insbes. von Stahl - Google Patents

Verfahren und Auszieheinrichtung zum Horizontalstranggiessen von Metall, insbes. von Stahl Download PDF

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Publication number
EP0213060B1
EP0213060B1 EP86730075A EP86730075A EP0213060B1 EP 0213060 B1 EP0213060 B1 EP 0213060B1 EP 86730075 A EP86730075 A EP 86730075A EP 86730075 A EP86730075 A EP 86730075A EP 0213060 B1 EP0213060 B1 EP 0213060B1
Authority
EP
European Patent Office
Prior art keywords
clamping
clamping jaws
billet
jaws
pair
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
EP86730075A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0213060A3 (en
EP0213060A2 (de
Inventor
Franz Dipl.-Ing. Keutgen
Dieter Dipl.-Ing. Perings
Achim Dipl.-Ing. Kubon
Peter Dr.-Ing. Voss-Spilker
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0213060A2 publication Critical patent/EP0213060A2/de
Publication of EP0213060A3 publication Critical patent/EP0213060A3/de
Application granted granted Critical
Publication of EP0213060B1 publication Critical patent/EP0213060B1/de
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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1284—Horizontal removing

Definitions

  • the invention relates to a device for pulling out a strand in a horizontal continuous casting installation with two clamping devices which can be moved hydraulically in and against the direction of the strand, which consists of clamping jaws which can be adjusted vertically on the strand by means of vertically arranged, hydraulic, controllable piston-cylinder units, and a method for operating the same Facility.
  • the invention is based on a horizontal continuous casting installation as is known from DE-A-34 26 169.
  • the cast strand is brought out of the horizontal continuous casting mold by pulling. With each drawing stroke, molten metal flows into the space released by the solidified cast part.
  • the inflow of liquid melt depending on the drawing stroke is determined by the inertia of the mass of the molten metal.
  • a very rapid pulling of the cast strand therefore leads to a slow flow of the molten metal, whereby later cavities in the solidified cast strand cannot be avoided. It is therefore necessary to design the horizontal continuous casting process and the associated pull-out device in such a way that corresponding pulling strokes and pulling speeds are precisely observed in order to avoid the cavities mentioned.
  • Adherence to the drawing strokes or drawing speeds by the pull-out device can, however, only be ensured if the clamping force of pairs of clamping jaws is adjusted at the same time, which detects the cast strand in a correspondingly favorable manner.
  • a suitable clamping device allows the clamping force to be adjusted in order to be able to adapt it to the strand format and to be able to fully use the pulling force in the event of malfunctions in the casting operation.
  • the object of the invention is to adapt the drawing strokes and the clamping force in such a way that the cast strand is securely clamped and at the same time damage to the strand surface is reduced to a minimum.
  • the dosing of the drawing path mentioned at the beginning is to be carried out in coordination with the drawing speed.
  • the object is achieved in that the lower jaws (13b) and the upper jaws (13a) can each be actuated via separate piston-cylinder drives (19, 15) in that the lower jaws (13b) each against one another Shaping format adapted, fixed stop can be adjusted and of a pair of jaws (13a, 13b) at least one jaw (13a or 13b) can be controlled differently from the other for format changes and that the jaws of a pair of jaws (13a, 13b) in the clamping-releasing Operations are controlled simultaneously.
  • the vertical arrangement of the pairs of jaws basically enables the advantageous construction of space-saving multi-strand systems. In covering the functions, however, this arrangement is also advantageous for the format change.
  • the upper jaw will therefore generally be able to be moved to considerably different heights, while the lower jaw can only be adjusted in height in the clamp-release operation.
  • the invention follows the division into independent piston-cylinder drives with different stroke paths.
  • the lower jaws can be adjusted against a fixed stop by means of a piston-cylinder unit.
  • a stop can easily be aligned with the horizontal continuous casting mold, so that the cast strand always remains in a reference plane.
  • the control of the piston-cylinder drives is also favored by the fact that the opening path of the clamping jaws is limited by means of a displacement sensor arranged inside the respective piston-cylinder drive.
  • the clamping device can be moved with the clamping jaws on a path whose length corresponds to at least three pulling strokes. Therefore, one clamping jaw pair is clamped for each pull stroke and either a pull stroke of the other pair of jaws or an empty return stroke of the other pair of jaws.
  • a particularly advantageous movement of the clamping device is designed in such a way that two movable pairs of jaws are provided, one pair of jaws taking over the strand from the other pair of jaws for the duration of at least three pulling strokes.
  • the time t in milliseconds is plotted on the abscissa in a coordinate system and the pulling speed V in meters / min on the ordinate.
  • the movement curve 1 represents a complete cycle 2 of a drawing stroke with recoil and holding time.
  • the pull stroke movement is divided into one controllable acceleration phase 3, the control being formed, for example, by two different acceleration zones 3a and 3b. This is followed by a phase 4 of uniform drawing speed and a delay phase 5.
  • a recoil 6 is initiated, which reaches point 7. From a point 8, the braking of the recoil (curve part 9) is initiated. This is followed by a stopping time 10 until the start of the new cycle with the acceleration zone 3a.
  • the pull-out device according to FIGS. 2 and 3 has two slides 11, each of which is assigned a clamping device 12, the clamping device consisting of a pair of clamping jaws with clamping jaws 13a and 13b.
  • the carriage 11 are actuated by a control, not shown, which is assigned to two drives.
  • the clamping device 12 has a support frame 14 with legs 14a and 14b, an upper yoke 14c and a lower yoke 14d.
  • a first piston-cylinder unit 15 is mounted on the upper yoke 14c and is each articulated with its piston rod 15a on the clamping jaws 13a.
  • an angle lever 18 is rotatably mounted, which with its bent leg 18a is located next to the cast strand 16.
  • the angle lever 18 forms a stop with the angle corner 18b at the same time, so that the clamping jaw 13b, which is connected to the angle lever 18, is guided into the plane described, in which the underside of the cast strand 16 and the underlying inner wall of the (not shown) ) Horizontal continuous casting mold lies.
  • the piston-cylinder units 15 and 19 are advantageous to arrange with their longitudinal axes 15b and 19a in parallel in order to save space.
  • a displacement sensor not shown, which works as an inductive displacement transducer and detects the actual position.
  • the setpoint for the movement of the clamping jaws 13a, 13b is controlled by a microprocessor.
  • the clamping device 12 with the clamping jaws 13a, 13b can be moved in a way which practically corresponds to three drawing strokes (FIGS. 1 and 3).
  • Two movable pairs of jaws 13a, 13b (FIG. 3) alternately take over the cast strand 16, with one pair of jaws taking over the cast strand 16 from the other for the duration of a third drawing stroke.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP86730075A 1985-08-07 1986-05-07 Verfahren und Auszieheinrichtung zum Horizontalstranggiessen von Metall, insbes. von Stahl Expired - Lifetime EP0213060B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853528328 DE3528328A1 (de) 1985-08-07 1985-08-07 Verfahren und auszieheinrichtung zum horizontalstranggiessen von metall, insbesondere von stahl
DE3528328 1985-08-07

Publications (3)

Publication Number Publication Date
EP0213060A2 EP0213060A2 (de) 1987-03-04
EP0213060A3 EP0213060A3 (en) 1988-06-08
EP0213060B1 true EP0213060B1 (de) 1990-04-04

Family

ID=6277924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730075A Expired - Lifetime EP0213060B1 (de) 1985-08-07 1986-05-07 Verfahren und Auszieheinrichtung zum Horizontalstranggiessen von Metall, insbes. von Stahl

Country Status (4)

Country Link
US (1) US4911224A (enrdf_load_stackoverflow)
EP (1) EP0213060B1 (enrdf_load_stackoverflow)
JP (1) JPS6233045A (enrdf_load_stackoverflow)
DE (2) DE3528328A1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3905873C1 (enrdf_load_stackoverflow) * 1989-02-03 1990-02-08 Mannesmann Ag, 4000 Duesseldorf, De
JP2900594B2 (ja) * 1990-11-21 1999-06-02 日本鋼管株式会社 水平連続鋳造の引抜き制御方法
FR2675062B1 (fr) * 1991-04-10 1993-07-16 Techmetal Promotion Procede de controle dynamique de la vitesse d'extraction lors d'un cycle de cicatrisation apres collage, dans un processus de coulee continue d'acier.
JP2501144B2 (ja) * 1991-05-02 1996-05-29 新日本製鐵株式会社 水平連続鋳造方法
DE4219335A1 (de) * 1992-06-10 1993-12-16 Mannesmann Ag Mehrfach-Horizontalstranggießanlage und Verfahren zu ihrem Betrieb

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1291060B (de) * 1963-12-06 1969-03-20 Fries Sohn J S Horizontal arbeitende Ausziehvorrichtung fuer Metall-Stranggiessanlagen
BE676331A (enrdf_load_stackoverflow) * 1965-03-19 1966-08-11
CH446622A (de) * 1965-11-15 1967-11-15 Wertli Alfred Verfahren und Anlage zum Stranggiessen von Metallen
AT277489B (de) * 1965-11-15 1969-12-29 Alfred Wertli Verfahren und vorrichtung zum homogenisieren des gefueges beim stranggieszen von metallen
DE1583611C3 (de) * 1967-09-29 1974-08-15 Demag-Elektrometallurgie Gmbh, 4100 Duisburg Vorrichtung zum absatzweisen Fördern eines metallischen Gießstranges
DE1783032C3 (de) * 1968-09-21 1974-01-03 Siemens Ag, 1000 Berlin U. 8000 Muenchen Einrichtung zum Steuern des schrittweisen Ausziehens eines Stranges aus einer horizontalen Stranggießkokille
US4012117A (en) * 1974-07-29 1977-03-15 Rca Corporation Liquid crystal module
JPS5611143A (en) * 1979-07-10 1981-02-04 Nippon Kokan Kk <Nkk> Horizontal continuous casting method
JPS57177868A (en) * 1981-04-25 1982-11-01 Nippon Kokan Kk <Nkk> Horizontal and continuous casting method for steel
DE3206501C1 (de) * 1982-02-24 1983-04-07 Mannesmann AG, 4000 Düsseldorf Verfahren und Auszieheinrichtung zum Horizontalstranggiessen von Metall,insbesondere von Stahl
DE3426169C2 (de) * 1984-07-16 1986-06-05 Mannesmann AG, 4000 Düsseldorf Verfahren und Horizontalstranggießkokille zum Horizontalstranggießen von Metall, insbes. von Stahl, zu dünnen und breiten Strängen

Also Published As

Publication number Publication date
JPH0435257B2 (enrdf_load_stackoverflow) 1992-06-10
JPS6233045A (ja) 1987-02-13
DE3670015D1 (de) 1990-05-10
DE3528328C2 (enrdf_load_stackoverflow) 1988-12-29
EP0213060A3 (en) 1988-06-08
EP0213060A2 (de) 1987-03-04
DE3528328A1 (de) 1987-02-19
US4911224A (en) 1990-03-27

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