EP0161475B1 - Vorrichtung zum seitlichen Abschliessen eines Formhohlraumes mit im wesentlichen rechteckigem Querschnitt in einer Stranggiessanlage - Google Patents

Vorrichtung zum seitlichen Abschliessen eines Formhohlraumes mit im wesentlichen rechteckigem Querschnitt in einer Stranggiessanlage Download PDF

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Publication number
EP0161475B1
EP0161475B1 EP85104217A EP85104217A EP0161475B1 EP 0161475 B1 EP0161475 B1 EP 0161475B1 EP 85104217 A EP85104217 A EP 85104217A EP 85104217 A EP85104217 A EP 85104217A EP 0161475 B1 EP0161475 B1 EP 0161475B1
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EP
European Patent Office
Prior art keywords
side walls
narrow side
broad side
narrow
section
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
EP85104217A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0161475A1 (de
Inventor
Fritz Willim
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.)
Clecim SAS
Davy Distington Ltd
Original Assignee
Concast Service Union AG
Clecim SAS
Davy Distington Ltd
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4222197&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0161475(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Concast Service Union AG, Clecim SAS, Davy Distington Ltd filed Critical Concast Service Union AG
Publication of EP0161475A1 publication Critical patent/EP0161475A1/de
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    • 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
    • B22D11/0637—Accessories therefor
    • B22D11/0648—Casting surfaces
    • B22D11/066—Side dams

Definitions

  • the invention relates to a device for the lateral closure of a mold cavity with a substantially rectangular cross section in a continuous casting installation, the mold cavity consisting of two curved, cooled broad side walls rotating in the direction of strand conveyance and two stationary, cooled narrow side walls and the narrow side walls engaging between the two arcuate broad side walls.
  • solidified crust parts can become jammed between the engaging part of the narrow side wall and the mold cavity narrowing in the direction of the strand, and a thin strand crust that has already solidified can tear open on the broad sides of the strand and lead to strand defects or breakthroughs.
  • the object of the invention is to design stationary narrow sides in a continuous casting installation in accordance with the preamble in such a way that the disadvantages mentioned are overcome.
  • the solidification of the narrow side of the strand should be controlled so that on the one hand faultless strands can be produced and on the other hand the wear on the system parts forming the mold cavity can be significantly reduced.
  • the device according to the invention makes it possible to control the solidification of the narrow sides of the strand in a targeted manner and, in addition to thin steel strips, also to cast those of approximately 20-50 mm thick or thin slabs with a high throughput.
  • This device also allows flawless strands with a perfect surface to be produced on the narrow and broad sides.
  • the breakthrough rate and wear on the drums and narrow side walls can also be significantly reduced with the solution according to the invention.
  • Another advantage is that by replacing fewer interchangeable parts, such as feed device and narrow side walls, strips or thin slabs of different widths of different thicknesses can be cast on the same system.
  • the risk of breakthroughs on the narrow sides increases with increasing casting performance.
  • the mold cavity between the narrow sides can be parallel in the first, heat-insulated section and converging in the casting direction in the second and subsequent sections.
  • the quality of the surface of the cast strand on the narrow sides can be further improved if the narrow side walls in a partial length of the mold cavity are thermally insulated over the entire distance between the broad side walls and form a plane. This can prevent or reduce jamming and wear.
  • cooling water channels can be designed in the narrow sides according to the features of claims 6 and 7.
  • a sealing of the mold cavity by controlling the local solidification can be achieved according to a further embodiment if the narrow side walls directly against the mold cavity in the strand conveying direction are thermally insulated at the end of the metal feed device over a central part of the distance between the broad side walls and have a high thermal conductivity at both end parts adjoining the broad side walls.
  • the narrow side walls can connect laterally to the metal feed device.
  • the strand width can only be adjusted when the system is at a standstill.
  • the metal feeder must be replaced and adapted to the new range. If an adjustment of the strand width is desired during the ongoing casting operation, then, according to a further embodiment, at least one narrow side wall, seen in the strand conveying direction, can be connected to the metal feed device and arranged to be displaceable transversely to the strand conveying direction.
  • FIG. 1 and 2 show a continuous casting installation for strips and thin slabs with two cooled casting drums 3 and 4 rotating in the continuous conveying direction 2.
  • the drums 3, 4 cooled broad side walls 7 and 8 together with two stationary, cooled narrow side walls 10 and 11 form a mold cavity 12.
  • the narrow side walls 10, 11 laterally close off the mold cavity 12, which is essentially a rectangular cross section for has rectangular strands. They engage at least partially between the two arcuate broad side walls 7, 8 or between the jackets of the drums 3, 4.
  • the narrow side walls 10, 11 along the mold cavity 12 are thermally insulated in a first section 14 in the strand conveying direction 2. e.g. B. by refractory bodies 5. 5 '. which are embedded in the narrow side walls. Depending on the cast metal. Casting performance, etc., fire resistance, thermal conductivity and material can be determined. Known refractory materials which cannot be wetted by liquid metal are advantageously used.
  • the narrow sides 10, 11 are thermally insulated over the entire distance between the broad side walls.
  • the narrow side walls 10, 11 have a high thermal conductivity over the entire distance 16 between the wide side walls 7, 8. They are usually made of metal, especially copper, and cooled with water.
  • the second section 15 represents the last part of the mold cavity 12. It tapers only very weakly in the strand conveying direction 2 and is therefore approximately parallel between the broad side walls 7, 8. The length of this section 15 has a significant influence on the crust formation on the narrow sides of the band or strand. If long sections 15 are required to remove the heat at high throughputs and the resulting high casting speeds, the drum diameter must be chosen to be correspondingly large.
  • the two narrow side walls 10, 11 are arranged in a correspondingly converging manner with the advantage of the shrinkage.
  • the narrow side walls 10, 11 have extensions. After the narrowest gap between the drums 3, 4 these walls 10, 11 widen again and can thus cool and support a strand indicated by a dash-dotted line 18.
  • the broad side walls 10, 11 have cooling channels 20, 20 ', which can be arranged entirely or partially outside the rotating drum jackets.
  • the narrow side walls 10, 11 connect laterally to the metal feed device 22 via a section 21.
  • a narrow side wall 29 adjoins the metal feed device 32 as seen in the strand conveying direction 31. It is displaceable transversely to the strand conveying direction 31, as indicated by arrow 35, and can also be moved during the casting operation in order to change the bandwidth.
  • the cooling water channels 30 are arranged overall within the cross section of the narrow side wall 29 which engages between rotating broad side walls 36.
  • a narrow region 34 is provided in front of the heat-insulated part 33 directly adjoining the metal feed 32 over the entire gap thickness made of cooled material with high thermal conductivity.
  • a metal feed device 41 is designed essentially the same as in FIG. 2.
  • the narrow side wall 40 is thermally insulated in the strand running direction directly at the end of the metal feed device 41 via a central part of the distance between the broad side walls 43, 44 represented by an arrow 42.
  • Both end parts 46, 46 'adjoining the broad side walls 43, 44 have a high thermal conductivity.
  • a refractory block 48 embedded in the narrow side wall 40 can, as shown in this example, be designed as a pentagonal cuboid. The liquid metal solidifies in contact with the cooled end parts 46, 46 '. This reduces the risk.
  • the refractory block 48 prevents premature excessive solidification of the narrow sides of the strand and thus prevents it from jamming in the mold cavity. Block 48 is followed by a section 49 with strong cooling, as already described in the preceding examples.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP85104217A 1984-04-18 1985-04-06 Vorrichtung zum seitlichen Abschliessen eines Formhohlraumes mit im wesentlichen rechteckigem Querschnitt in einer Stranggiessanlage Expired EP0161475B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1942/84 1984-04-18
CH1942/84A CH664916A5 (de) 1984-04-18 1984-04-18 Vorrichtung zum seitlichen abschliessen eines formhohlraumes mit im wesentlichen rechteckigem querschnitt in einer stranggiessanlage.

Publications (2)

Publication Number Publication Date
EP0161475A1 EP0161475A1 (de) 1985-11-21
EP0161475B1 true EP0161475B1 (de) 1987-12-02

Family

ID=4222197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104217A Expired EP0161475B1 (de) 1984-04-18 1985-04-06 Vorrichtung zum seitlichen Abschliessen eines Formhohlraumes mit im wesentlichen rechteckigem Querschnitt in einer Stranggiessanlage

Country Status (10)

Country Link
US (1) US4580615A (ja)
EP (1) EP0161475B1 (ja)
JP (1) JPH062305B2 (ja)
AU (1) AU587779B2 (ja)
BR (1) BR8501803A (ja)
CA (1) CA1240819A (ja)
CH (1) CH664916A5 (ja)
DE (1) DE3561092D1 (ja)
IN (1) IN161520B (ja)
ZA (1) ZA852856B (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2656244A1 (fr) * 1989-12-26 1991-06-28 Siderurgie Fse Inst Rech Dispositif de coulee continue de produits metalliques minces entre deux cylindres refroidis en rotation.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT209510B (de) * 1958-01-31 1960-06-10 Pechiney Prod Chimiques Sa Vorrichtung zum horizontalen Stranggießen von Schmelzgut, insbesondere von Metallen
FR1364758A (fr) * 1963-05-16 1964-06-26 Duralumin Procédé d'amélioration de la surface des ébauches plates obtenues par coulée continue suivie de laminage
GB1132730A (en) * 1966-12-01 1968-11-06 British Iron Steel Research Formation of metallic strip material
FR2091851B1 (ja) * 1969-12-26 1973-05-25 Namy Philippe
FR2429056A1 (fr) * 1978-06-19 1980-01-18 Tournus Manuf Metallurg Procede de fabrication de bandes composites par coulee continue
CH663165A5 (de) * 1983-08-24 1987-11-30 Lauener Eng Ag Giessmaschine zum stranggiessen von metall und verfahren zu deren betrieb.
CH665370A5 (de) * 1984-04-06 1988-05-13 Concast Service Union Ag Verfahren und vorrichtung zum kontinuierlichen giessen von metall in einen formhohlraum mit im kreislauf sich bewegenden gekuehlten waenden.

Also Published As

Publication number Publication date
ZA852856B (en) 1985-11-27
DE3561092D1 (en) 1988-01-14
JPH062305B2 (ja) 1994-01-12
CA1240819A (en) 1988-08-23
CH664916A5 (de) 1988-04-15
EP0161475A1 (de) 1985-11-21
AU4108185A (en) 1985-10-24
JPS60234749A (ja) 1985-11-21
AU587779B2 (en) 1989-08-31
BR8501803A (pt) 1985-12-10
IN161520B (ja) 1987-12-19
US4580615A (en) 1986-04-08

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