EP0181566A1 - Verfahren und Vorrichtung zum Bandstranggiessen von Metallen, insbesondere von Stahl - Google Patents

Verfahren und Vorrichtung zum Bandstranggiessen von Metallen, insbesondere von Stahl Download PDF

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Publication number
EP0181566A1
EP0181566A1 EP85113825A EP85113825A EP0181566A1 EP 0181566 A1 EP0181566 A1 EP 0181566A1 EP 85113825 A EP85113825 A EP 85113825A EP 85113825 A EP85113825 A EP 85113825A EP 0181566 A1 EP0181566 A1 EP 0181566A1
Authority
EP
European Patent Office
Prior art keywords
film
casting
molten metal
strand
outlet
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Withdrawn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
EP85113825A
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German (de)
English (en)
French (fr)
Inventor
Fritz-Peter Dr. Ing. Pleschiutschnigg
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 EP0181566A1 publication Critical patent/EP0181566A1/de
Withdrawn legal-status Critical Current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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0605—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two belts, e.g. Hazelett-process

Definitions

  • the invention relates to a method and an apparatus for continuous strip casting of metals, in particular steel, in which the molten metal is introduced from a storage container and a spout into a stationary (non-oscillating) continuous casting mold, in which the casting strand is pulled out in a controlled manner and during which of casting, a heat-resistant film is carried continuously at least on two opposite cross-sectional sides at the rate at which the cast strand is pulled out.
  • the classic process line of continuous slab casting (thickness approx. 200 to 300 mm) / hot strip (-Ready, -Intermediate, -Finished) has a reduction degree of greater than 30.
  • the objective of reducing the degree of reduction from greater than 30 to greater than 3 leads to an elimination of the rough and intermediate road and parts of the finishing train and thus to a new technology which leads to a substantial reduction in the process line and thus to a reduction in the conversion costs between cast strip and finished hot strip contributes.
  • the prior art is divided into the following processes, which are of independent importance in principle:
  • the continuous casting of metals is carried out in the perpendicular process and in the horizontal process with an oscillating mold or with a relative movement between the cast strand and the horizontal continuous casting mold.
  • moving molds including pairs of belts, rollers, chains and the like. be understood.
  • the invention is based on the object of avoiding problems occurring in the continuous casting of thin strands by pouring into the relatively narrow continuous casting molds for thin strands.
  • the object is achieved according to the invention in that the molten metal is continuously passed under the metallostatic pressure of the distributor container into the funnel-shaped inlet of the continuous casting mold and guided to the beginning of the casting cross section without interruption of the flow and in this area a full cooling through the heat-resistant film or the this leading continuous casting mold is subjected.
  • This measure solves the problem of pouring the molten metal into the extremely narrow continuous casting molds for thin strands. While the invention makes it possible to avoid crystallization before the casting cross section is reached by the molten metal, this occurs immediately when the casting cross section is reached by full cooling.
  • the molten metal is introduced perpendicularly, an outlet being set to a height at which the molten metal forms a meniscus in the region of the outlet together with the film moving at the casting speed.
  • Such a meniscus allows a steady state of flow to be maintained, with the ratio of the casting cross-section: outlet cross-section tending towards 1.
  • the device for carrying out the method is advantageously designed in such a way that a spout or a distributor tank with a nozzle outlet is provided above the funnel as the means having an outlet, that the funnel is formed by additional guide rollers in addition to the belts or the rollers of the roller pairs and that the crystallizer or Continuous plate casting mold in the immediate vicinity is assigned a cooling unit for the film or for the tapes, the tapes also being guided in the cooling unit.
  • the film by lying on the crystallizer or . Continuous slab casting mold protected from destruction by cooling.
  • the outlet is adjustable in height.
  • the advantage lies in the possibility of variation, to form a completely closed system or to form a small or larger meniscus by lifting the outlet accordingly.
  • the outlet be assigned to the crystallizer or the continuous plate casting mold with a slot spacing for guiding the film. This measure causes the system between the nozzle and the crystallizer or the plate strand mold to be closed.
  • the film runs in each case on part of the strand path and can be deflected at the end of the strand path.
  • the length of the partial strand path determines the cooling section or cooling time and at the same time compliance with the strand format.
  • the cooling can also be intensified by guiding the film by means of further crystallizers. At the same time, the line path is also defined. If the outlet for the molten metal is part of the storage container, it is advantageous that the storage container can be raised or lowered.
  • crystallizers for adjusting the cast strand thickness are horizontally adjustable.
  • the shape and surface of the cast strand to be produced can also be improved in that a film forming a side boundary can be inserted in each case on the end faces of the distributor containers.
  • a smooth and true-to-shape surface can also be achieved in that at least one end roller forming a side boundary is arranged on the end faces of the separator containers.
  • a side boundary can also be formed in a different way, in that an approximately circular, disk-shaped boundary is arranged on at least one of the rollers of a pair of rollers.
  • the crystallizer 4 consists of at least two foils 6 arranged on the broad sides of the cast strand 5 in the form of strips 6a and 6b.
  • the film 6 can be made from a wide variety of materials. Aluminum or steel strips can be considered as the film 6 made of metal. However, the film 6 can also be a ceramic film of e.g. 0.1 mm thick with high thermal conductivity. Furthermore, glass fiber film, carbon fleece, whisker film made of C single crystals can be considered for the film 6. It goes without saying that mixed forms of the materials mentioned above can also be used for this film 6. The materials mentioned are resistant to temperature changes and have a relatively high thermal conductivity.
  • the film 6 is also used together with a metal band supporting it, the metal band not coming into direct contact with the liquid metal melt 1 or the externally solidified cast strand 5. In this case, the film 6 prevents sticking between the cooled metal strip and the hot cast strand 5.
  • the film 6 serves to save oscillation of the crystallizer 4.
  • the problem of introducing the molten metal 1 at a temperature of approximately 1500 ° C. (molten steel) into a narrow continuous casting mold with a cast strand thickness of approximately 10 to 40 mm is solved by the method according to the invention in that the molten metal 1 is removed from the large cross section of the distributor container 3 (or a ladle, an intermediate vessel and the like) without significant temperature losses on the respective casting cross-section 7, but then to build up a sudden cooling.
  • the molten metal 1 is removed from the large cross section of the distributor container 3 (or a ladle, an intermediate vessel and the like) without significant temperature losses on the respective casting cross-section 7, but then to build up a sudden cooling.
  • this procedure is carried out by introducing the molten metal 1 into a funnel-shaped inlet 8 formed by the bands 6a, 6b, a quasi-stationary meniscus 9 being formed, which is illustrated by the radius arrow.
  • the distribution container 3 distributes the molten metal over the width of the bed (see FIG. 4).
  • An outlet 10 provides for the formation of the meniscus 9, whose opening width is advantageously smaller than the cast strand thickness 11.
  • Above the meniscus 9 and the funnel-shaped entrance 8, the molten metal 1 is quickly led to the casting cross section 7 or to the cast strand thickness 11, where the molten metal 1 has the full cooling effect, without any significant temperature loss that the strand shells 5a and 5b can form.
  • the molten metal 1 is usually protected against reoxidation by means of a slag layer 1 a.
  • the molten metal 1 is introduced directly between the strips 6a, 6b of the crystallizer 4 through the outlet 10, the outlet 10 being located here directly at the spout 2.
  • the molten metal 1 flows under the pressure delta p into the funnel 8 and is fully cooled as described when the casting cross section 7 is reached.
  • the distributor container 3 instead of the distributor container 3, only the spout 2 is adjusted in height here. The height adjustment takes place in such a way that the molten metal 1 is fed vertically in such a way that the meniscus 9 mentioned forms in accordance with the desired cooling conditions.
  • the crystallizer 4 serves, among other things. consisting of bands 6a and 6b.
  • a means 12 having the outlet 10 is arranged above the crystallizer 4 or a continuous plate casting mold. This means 12 is formed either by the spout 2 or by the distribution container 3.
  • the outlet 10 is aligned with the central longitudinal axis 13, and the film 6 is in each case on the crystallizer 4 or on the walls of a continuous casting mold.
  • the crystallizer 4 consists, apart from the belts 6a and 6b, of cylindrical pairs of rollers 14 and 15, the lengths of which correspond to the respective width of the cast strip to be cast is turned off.
  • the film 6 or the tapes 6a and 6b lie snugly on the rollers of the roller pairs 14 and 15, respectively.
  • the individual roles of the pairs of roles 14 and 15 are horizontally adjustable, as indicated by the arrows 16.
  • the adjustability serves the shrinkage behavior and the respective cast strand thickness 11.
  • To form the funnel-shaped inlet 8, the film 6 is guided over several guide rollers 17 in each case.
  • the additional deflection rollers 18, 19 and 20 guide the film 6 through a cooling unit 21.
  • the left half of the illustration runs between the outlet 10, i. here the wall 3a of the distributor container 3 in the slot spacing 22 the film 6.
  • the same slot spacing 22 for the film 6 is shown.
  • Another difference is in the course of the wall 3a to the casting cross section 7, so that the molten metal 1 does not come into contact with the (cooled) film 6 until the casting cross section 7.
  • the film 6 is acted upon by coolant between the pairs of rollers 14, 15 (pair of horizontal arrows).
  • the strips 6a and 6b are held in contact with the cast strand 5 only on the partial strand path 23 determined by the diameter or distance.
  • the film 6 can also be guided by means of further crystallizers 4 and the cast strand 5 can be supported and cooled for a correspondingly longer time.
  • the distributor container 3 can be raised and lowered.
  • the speed of rotation of the rolls within the pairs of rolls 14 and 15 corresponds to the casting speed Yg.
  • the film 6 is also moved at the casting speed Vg.
  • FIGS. 6 and 7 Another alternative to take the end faces 27 into account is shown in FIGS. 6 and 7.
  • a roller of the pair of rollers 14 is provided with a circular, disc-shaped boundary 29 which is matched to the respective cast strand thickness 11 and in the directions 30 to the respective casting bandwidth is turned off.
  • the tapes 6a and 6b are held somewhat wider by an overhang 6c in order to achieve a sealing effect at the joints 31.
  • each roller of the pair of rollers 14 has a disc-shaped boundary 29.
  • the shape 32 between the rollers of the pair of rollers 14 can be selected in each case according to the requirements of the further processing of the cast strand 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP85113825A 1984-11-03 1985-10-30 Verfahren und Vorrichtung zum Bandstranggiessen von Metallen, insbesondere von Stahl Withdrawn EP0181566A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3440236 1984-11-03
DE19843440236 DE3440236A1 (de) 1984-11-03 1984-11-03 Verfahren und vorrichtung zum bandstranggiessen von metallen, insbesondere von stahl

Publications (1)

Publication Number Publication Date
EP0181566A1 true EP0181566A1 (de) 1986-05-21

Family

ID=6249443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113825A Withdrawn EP0181566A1 (de) 1984-11-03 1985-10-30 Verfahren und Vorrichtung zum Bandstranggiessen von Metallen, insbesondere von Stahl

Country Status (4)

Country Link
EP (1) EP0181566A1 (fi)
JP (1) JPS61123450A (fi)
CN (1) CN85106424A (fi)
DE (1) DE3440236A1 (fi)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991008069A1 (en) * 1989-11-24 1991-06-13 Gunnar Jonasson Device for continuous casting
EP0583867A1 (en) * 1992-06-23 1994-02-23 KAISER ALUMINUM & CHEMICAL CORPORATION Method and apparatus for continuous casting of metals
EP0735931A1 (en) * 1993-12-23 1996-10-09 KAISER ALUMINUM & CHEMICAL CORPORATION Method and apparatus for twin belt casting
US6063215A (en) * 1995-10-16 2000-05-16 Kaiser Aluminum & Chemical Corporation Method of manufacturing casting belts for use in the casting of metals
EP1084777A1 (en) * 1999-09-16 2001-03-21 Fulvio Fasano Continuous casting apparatus
DE102007002529A1 (de) * 2007-01-17 2008-07-24 Bollig, Georg, Dr. Verfahren zur Herstellung eines Dünnbandes unter Verwendung einer Dünnband-Gießanlage und Dünnband-Gießanlage dazu
CN102274937A (zh) * 2011-08-18 2011-12-14 东北大学 一种逆偏析锡的含锡铁素体不锈钢薄带的制备方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3805071A1 (de) * 1988-02-18 1989-08-31 Didier Werke Ag Abschluss- und regeleinrichtung fuer das giessen fluessiger metallschmelze
AT397478B (de) * 1991-10-03 1994-04-25 Voest Alpine Stahl Verfahren und vorrichtung zum stranggiessen eines dünnen bandes oder einer dünnen bramme
AUPQ291199A0 (en) * 1999-09-17 1999-10-07 Bhp Steel (Jla) Pty Limited Strip casting
CN115041644B (zh) * 2022-08-04 2022-12-27 宝鸡核力材料科技有限公司 一种制备大宽重宽幅卷带结晶器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB512953A (en) * 1937-03-24 1939-09-29 Alfred Kreidler Process and apparatus for casting bodies of indefinite length
DE742180C (de) * 1939-11-09 1943-11-24 Velmet Veltener Leichtmetall G Kokille zum Giessen von Straengen fuer plattenfoermige Koerper
FR1090019A (fr) * 1953-08-18 1955-03-25 Dispositif pour la coulée continue de métal ou d'alliage liquide en bandes
FR66280E (fr) * 1954-05-10 1956-06-28 Dispositif pour la coulée continue de métal ou d'alliage liquide en bandes
DE1508876A1 (de) * 1965-03-08 1969-11-13 Siderurgie Fse Inst Rech Kontinuierliches Stranggiessverfahren und Einrichtung zum Durchfuehren des Verfahrens

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB512953A (en) * 1937-03-24 1939-09-29 Alfred Kreidler Process and apparatus for casting bodies of indefinite length
DE742180C (de) * 1939-11-09 1943-11-24 Velmet Veltener Leichtmetall G Kokille zum Giessen von Straengen fuer plattenfoermige Koerper
FR1090019A (fr) * 1953-08-18 1955-03-25 Dispositif pour la coulée continue de métal ou d'alliage liquide en bandes
FR66280E (fr) * 1954-05-10 1956-06-28 Dispositif pour la coulée continue de métal ou d'alliage liquide en bandes
DE1508876A1 (de) * 1965-03-08 1969-11-13 Siderurgie Fse Inst Rech Kontinuierliches Stranggiessverfahren und Einrichtung zum Durchfuehren des Verfahrens

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991008069A1 (en) * 1989-11-24 1991-06-13 Gunnar Jonasson Device for continuous casting
EP0583867A1 (en) * 1992-06-23 1994-02-23 KAISER ALUMINUM & CHEMICAL CORPORATION Method and apparatus for continuous casting of metals
AU671638B2 (en) * 1992-06-23 1996-09-05 Alcoa Inc. Method and apparatus for continuous casting of metals
CN1051732C (zh) * 1992-06-23 2000-04-26 凯泽铝和化学公司 连续铸造金属的方法和装置
US6102102A (en) * 1992-06-23 2000-08-15 Kaiser Aluminum & Chemical Corporation Method and apparatus for continuous casting of metals
EP0735931A1 (en) * 1993-12-23 1996-10-09 KAISER ALUMINUM & CHEMICAL CORPORATION Method and apparatus for twin belt casting
EP0735931A4 (en) * 1993-12-23 1998-11-04 Kaiser Aluminium Chem Corp METHOD AND DEVICE FOR DOUBLE BAND CASTING
US6063215A (en) * 1995-10-16 2000-05-16 Kaiser Aluminum & Chemical Corporation Method of manufacturing casting belts for use in the casting of metals
EP1084777A1 (en) * 1999-09-16 2001-03-21 Fulvio Fasano Continuous casting apparatus
DE102007002529A1 (de) * 2007-01-17 2008-07-24 Bollig, Georg, Dr. Verfahren zur Herstellung eines Dünnbandes unter Verwendung einer Dünnband-Gießanlage und Dünnband-Gießanlage dazu
CN102274937A (zh) * 2011-08-18 2011-12-14 东北大学 一种逆偏析锡的含锡铁素体不锈钢薄带的制备方法

Also Published As

Publication number Publication date
JPS61123450A (ja) 1986-06-11
CN85106424A (zh) 1986-05-10
DE3440236C2 (fi) 1987-10-15
DE3440236A1 (de) 1986-05-22

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