EP0181567A1 - Dispositif pour la coulée de bandes de métaux, en particulier d'acier - Google Patents

Dispositif pour la coulée de bandes de métaux, en particulier d'acier Download PDF

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Publication number
EP0181567A1
EP0181567A1 EP85113826A EP85113826A EP0181567A1 EP 0181567 A1 EP0181567 A1 EP 0181567A1 EP 85113826 A EP85113826 A EP 85113826A EP 85113826 A EP85113826 A EP 85113826A EP 0181567 A1 EP0181567 A1 EP 0181567A1
Authority
EP
European Patent Office
Prior art keywords
casting
storage vessel
film
molten metal
metal
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Withdrawn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
EP85113826A
Other languages
German (de)
English (en)
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 EP0181567A1 publication Critical patent/EP0181567A1/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Withdrawn legal-status Critical Current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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars

Definitions

  • the invention relates to a device for continuous casting of molten metal, in particular steel, in which pressurized molten metal can be conveyed from a storage vessel into a crystallizer according to the principle of communicating tubes.
  • Devices of this type are operated according to a method in which the molten metal from a storage container and a spout is introduced into a stationary (non-oscillating) continuous casting mold in a controlled manner, in which the casting strand is also pulled out in a controlled manner and in which at least one heat-resistant film is continuously produced during casting is carried along on a cross-sectional side 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 wamband contributes.
  • the invention is based on the problem of difficulties encountered in strip casting, e.g. to avoid with regard to the regulation of the inflow into the very narrow die.
  • the object is achieved according to the invention in that the metal melt, which is under increased pressure in an at least partially closed storage vessel, can be introduced through a gap outlet which is provided in the upper region of the storage vessel, that at least on the underside of the closed casting cross section
  • the film can be inserted into the path of the respective strand side at a casting speed and that the film and cast strip lie on a cooled guide for the film or cast strip.
  • This design allows an exact metering of the amount of metal, possibly with the exclusion of air, so that the specified pull-out speed can be maintained.
  • the additional pressure improves the density of the cast.
  • the pressure acts as a regulator for the cast tape's contact with the cooled guide.
  • the film saves a special oscillation device. The film also causes undisturbed passage of heat into the cooled guide.
  • An advantageous embodiment of the invention consists in that the gap outlet is formed from an overflow arranged at the level of the guide and a cooling roller which can be driven in the direction of movement of the cast strip.
  • the object is further achieved according to the invention in that the metal melt, which is under increased pressure in a storage vessel closed at the top, is introduced vertically through a gap outlet into a continuous plate casting mold, with at least two opposite broad sides between a slot inlet and the cooled plates Continuous casting mold, a film can be inserted into the path of the respective strand side at the casting speed.
  • this design allows casting in the arc of a thin strand, which is subjected to the least possible deformation during the later winding process.
  • Another improvement of the invention is that the film is guided between the overflow and the cooled guide.
  • a pressure chamber is arranged adjacent to the storage vessel for the molten metal, which is connected to the storage vessel by an opening in the bottom region of a partition.
  • the overflow is assigned at least one cooling roller set or adjustable to cast strip thickness as a crystallizer.
  • the cooling roller replaces a film on the top of the cast strip and also allows the cast strip thickness to be adjusted.
  • a side limitation for the cast belt can advantageously be achieved in that the cooling rollers are each provided with flanges at their ends at a distance from the cast belt width.
  • the invention also avoids reoxidation of the molten metal during crucial phases of the casting process, in that inert gas is applied to the pressure chamber assigned to the storage vessel.
  • the 1 has a storage vessel 1, from which the molten metal 2 (liquid steel) is conveyed into the crystallizer 3.
  • the molten metal 2 is conveyed from a pressure chamber 4 by a controllable excess pressure dp / dt.
  • the storage vessel 1 is closed insofar as it is connected in a communicating manner to the pressure chamber 4 according to FIG. 1 due to the metal melt 2 and has only one gap outlet 5 which is formed by an upper nozzle plate 5a and a lower nozzle plate 5b.
  • the resulting bottom 3a of the crystallizer 3 is used for feeding a film 6.
  • the film 6 bears against a cooled guide 10, which extracts the heat flow dQ / dt from the molten metal 2.
  • 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, for example 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. It must also be assumed that the film 6 is also used together with a metal band supporting it, the metal band not coming into direct contact with the molten metal 2 or the externally solidified cast band 9. In this case, the film 6 prevents sticking between the cooled metal band and the hot cast band 9.
  • the film 6 serves to save the crystallizer 3 from oscillating.
  • the problem, the molten metal 2 with a Introducing a temperature of approx. 1500 ° C. (molten steel) into the narrow crystallizer 3 is solved here through the gap outlet 5 in connection with the pressure in the pressure chamber 4 which is higher than the atmospheric pressure.
  • the gap outlet 5 is formed from an overflow 11, which is arranged at the level 12, the cooled guide 10 being assigned a cooling roller 13 as a component of the crystallizer 3.
  • the drivable cooling roller 13 is mounted in the arrow directions 14 for the purpose of setting different cast strip thicknesses.
  • the gap outlet 5 is consequently formed here by the cooled guide 10 or the film 6 together with the cooling roller 13.
  • the overflow 11 acts like a pre-metering of the molten metal flow.
  • Full cooling begins in the gap outlet 5 because the roller 13 is cooled like the guide 10.
  • the gap outlet 5 is moved in the vertical direction of movement (dm / dt).
  • a continuous plate casting mold 15 is preferred which dissipates the heat flow dQ / dt through the respective copper plate.
  • the film 6 is in each case on two opposite broad sides of the continuous plate casting mold 15, each with a slot inlet 16 forming the guide for the films 6 moving in a closed circuit.
  • the heat flow dQ / dt dissipated via the foils 6 is essentially released to the cooling units 17.
  • the film 6 moves over driven and idling guide rollers 18 and 19 at casting speed Yg.
  • the film 6 is guided between the upper run 11 and the cooled guide 10.
  • the molten metal 2 is fed from the pressure chamber 4 to the storage vessel 1 through an opening 20 in the base region 21, which is created by a partition wall 22.
  • the invention can be implemented in further variations:
  • the embodiment according to FIG. 2 allows the cooling roller 13 to be followed by a further cooling roller 13 in the casting belt movement direction 9a, an endless film 6 being wrapped around the cooling rollers 13.
  • One of the cooling rollers 3 is then driven at the casting speed Vg.
  • the casting speed Vg is to be equated with the casting belt speed.
  • the lateral limitation for the cast strip 9 can be formed by flanges 23 (FIG. 3), which are adjustable to the cast strip width, in addition to side walls 8a, 8b (FIG. 3).
  • additional foils 6 with analog guidance as described in FIGS. 1, 2 and 4 can also be used. Such an example can be seen in FIG. 5.
  • the side foils are designated 6a and 6b there.
  • the pressure chamber 4 assigned to the storage vessel 1 is charged with inert gas in order to avoid reoxidation of the molten metal 2.
  • FIG. 4 A further embodiment is shown in FIG. 4.
  • the storage vessel 1 has been further developed up to the gap outlet 5, whereby (left half of the illustration) the metal melt 2 is brought abruptly onto the casting cross section 7 via a tear-off edge 24 and is also cooled there abruptly.
  • An alternative to this is the right half of the illustration in FIG. 4, the storage vessel 1 guiding the molten metal 2 onto the casting cross section 7 through a vertically delimited wall part 25.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP85113826A 1984-11-03 1985-10-30 Dispositif pour la coulée de bandes de métaux, en particulier d'acier Withdrawn EP0181567A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843440237 DE3440237C2 (de) 1984-11-03 1984-11-03 Vorrichtung zum Bandstranggießen von Metallen, insbesondere von Stahl
DE3440237 1984-11-03

Publications (1)

Publication Number Publication Date
EP0181567A1 true EP0181567A1 (fr) 1986-05-21

Family

ID=6249444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113826A Withdrawn EP0181567A1 (fr) 1984-11-03 1985-10-30 Dispositif pour la coulée de bandes de métaux, en particulier d'acier

Country Status (4)

Country Link
EP (1) EP0181567A1 (fr)
JP (1) JPS61123451A (fr)
CN (1) CN85106442A (fr)
DE (1) DE3440237C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0534174A1 (fr) * 1991-09-27 1993-03-31 Wieland-Werke Ag Procédé et dispositif de fabrication d'une bande de métal proche de sa mesure finale
CN115415488A (zh) * 2022-07-27 2022-12-02 上海交通大学 一种超高品质单晶铜水平连铸制备工艺

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3810302A1 (de) * 1988-03-24 1989-10-12 Mannesmann Ag Giesseinrichtung zur kontinuierlichen herstellung von metallband
DE4344953C2 (de) * 1993-12-27 1996-10-02 Mannesmann Ag Verfahren und Vorrichtung zum Angießen eines endabmessungsnahen Metallbandes
DE19815007C2 (de) * 1998-01-23 2000-07-06 Sms Demag Ag Gießverfahren für einen Metallstrang
DE19811434C2 (de) * 1998-03-17 2002-05-16 Mannesmann Ag Verfahren und Vorrichtung zum Vergleichmäßigen eines schmelzflüssigen Metallfilmes
DE19828773C2 (de) * 1998-06-27 2000-09-14 Sms Demag Ag Bandgießanlage für Metallband
DE102006057858A1 (de) 2006-12-08 2008-08-21 Vladimir Volchkov Verfahren zum Stranggießen (hoch)legierter oder/und hochgekohlter Stähle
CN102836975A (zh) * 2011-06-24 2012-12-26 北京有色金属研究总院 一种在压力和振动下凝固的锌合金水平连铸系统
DE102012017682A1 (de) 2012-08-31 2014-03-06 Vladimir Volchkov Verfahren zum Stranggießen der NE-Metalle
DE102012017684A1 (de) 2012-08-31 2014-03-06 Vladimir Volchkov Verfahren zum Stranggießen der NE-Metalle
CN104722726B (zh) * 2013-12-23 2017-03-29 鞍钢股份有限公司 一种高硅电工钢连铸生产方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348178A (en) * 1937-11-03 1944-05-02 Joseph M Merle Method of making metallic products of sheetlike form
FR66280E (fr) * 1954-05-10 1956-06-28 Dispositif pour la coulée continue de métal ou d'alliage liquide en bandes
US3426836A (en) * 1964-12-11 1969-02-11 Alusuisse Machine for the continuous casting of slabs between bands
DE1508876A1 (de) * 1965-03-08 1969-11-13 Siderurgie Fse Inst Rech Kontinuierliches Stranggiessverfahren und Einrichtung zum Durchfuehren des Verfahrens
US3810564A (en) * 1973-06-18 1974-05-14 Midland Ross Corp Air pressure discharge furnace having protective atmosphere inlet and outlet

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57142748A (en) * 1981-02-27 1982-09-03 Hitachi Ltd Molding device for thin plate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348178A (en) * 1937-11-03 1944-05-02 Joseph M Merle Method of making metallic products of sheetlike form
FR66280E (fr) * 1954-05-10 1956-06-28 Dispositif pour la coulée continue de métal ou d'alliage liquide en bandes
US3426836A (en) * 1964-12-11 1969-02-11 Alusuisse Machine for the continuous casting of slabs between bands
DE1508876A1 (de) * 1965-03-08 1969-11-13 Siderurgie Fse Inst Rech Kontinuierliches Stranggiessverfahren und Einrichtung zum Durchfuehren des Verfahrens
US3810564A (en) * 1973-06-18 1974-05-14 Midland Ross Corp Air pressure discharge furnace having protective atmosphere inlet and outlet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0534174A1 (fr) * 1991-09-27 1993-03-31 Wieland-Werke Ag Procédé et dispositif de fabrication d'une bande de métal proche de sa mesure finale
AU655674B2 (en) * 1991-09-27 1995-01-05 Wieland-Werke Ag A method and apparatus for the manufacture of a metal strip with near net shape
CN115415488A (zh) * 2022-07-27 2022-12-02 上海交通大学 一种超高品质单晶铜水平连铸制备工艺

Also Published As

Publication number Publication date
DE3440237C2 (de) 1986-11-06
CN85106442A (zh) 1987-02-25
JPS61123451A (ja) 1986-06-11
DE3440237A1 (de) 1986-05-22

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Inventor name: PLESCHIUTSCHNIGG, FRITZ-PETER, DR.-ING.