EP0166718A2 - Procédé et dispositif pour la coulée continue de bains métalliques - Google Patents

Procédé et dispositif pour la coulée continue de bains métalliques Download PDF

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Publication number
EP0166718A2
EP0166718A2 EP85890141A EP85890141A EP0166718A2 EP 0166718 A2 EP0166718 A2 EP 0166718A2 EP 85890141 A EP85890141 A EP 85890141A EP 85890141 A EP85890141 A EP 85890141A EP 0166718 A2 EP0166718 A2 EP 0166718A2
Authority
EP
European Patent Office
Prior art keywords
melt
feed line
melt feed
mold
cross
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.)
Granted
Application number
EP85890141A
Other languages
German (de)
English (en)
Other versions
EP0166718A3 (en
EP0166718B1 (fr
Inventor
Peter Dipl.-Ing. Machner
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.)
Boehler GmbH
Primetals Technologies Austria GmbH
Original Assignee
Vereinigte Edelstahlwerke AG
Boehler GmbH
Voestalpine AG
Voest Alpine Industrienlagenbau GmbH
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 Vereinigte Edelstahlwerke AG, Boehler GmbH, Voestalpine AG, Voest Alpine Industrienlagenbau GmbH filed Critical Vereinigte Edelstahlwerke AG
Publication of EP0166718A2 publication Critical patent/EP0166718A2/fr
Publication of EP0166718A3 publication Critical patent/EP0166718A3/de
Application granted granted Critical
Publication of EP0166718B1 publication Critical patent/EP0166718B1/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
    • B22D11/047—Means for joining tundish to mould
    • 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
    • B22D11/10—Supplying or treating molten metal

Definitions

  • the invention relates to a method and an apparatus for the continuous casting of metallic melts, in particular of higher melting alloys, e.g. Stole.
  • melts can be caused to rotate, for example, by electromagnetic stirring devices around the casting direction or around the longitudinal direction of the mold, or it can cause flows from the outer edge of the mold to the inner edge of the mold.
  • Such flows can be achieved by suitably arranged electromagnetic stirring devices and corresponding controls.
  • the present invention aims to provide a method and an apparatus for the horizontal continuous casting of metallic melts, in particular of higher melting alloys, e.g. To create steel in which a particularly high surface quality is achieved, which has the least possible outlay on equipment, and which permits energy-saving operation, and the. Internal quality of the strand increased significantly.
  • the process according to the invention for the continuous casting of metallic melts, in particular of higher melting alloys, e.g. steel the metallic melt via at least one melt feed line, e.g. channel, from a melt container, pan, or the like into a substantially horizontally arranged and liquid-tight with it
  • a melt feed line e.g. channel
  • the partially solidified strand from the mold preferably step by step, optionally with a partial step backwards, consists essentially in that the melt is stirred in the melt feed line, causing the melt to rotate about its direction of flow will, and that already rotating melt is introduced into the mold via a preferably smaller cross-sectional area than the die having the mold.
  • the melt already rotates into the mold, so that the boundary layers, i.e. surface layers, which may have notches when the strand is gradually withdrawn, also have a particularly high degree of homogeneity, while at the same time an additional acceleration in the Metal melt flow direction is applied.
  • Another advantage is that there is already a rotational flow of the molten metal at the start of the formation of the strand shell.
  • melt feed line has at least two different cross-sections, the corresponding sections of the melt feed line opening tangentially into one another, then a stirring movement in the melt can be achieved without further energy expenditure and expensive devices.
  • melt feed line has at least two different, adjoining cross-sectional areas, the melt being introduced approximately tangentially, preferably from that section with the smaller cross-sectional area into the one with the larger cross-sectional area, then rotation of the melt about its direction of flow can also be carried out without additional energy, e.g. can be achieved by electromagnets or the like, with the entire metal current being set in motion at the same time.
  • a particularly homogeneous strand can be obtained if the melt flow rate at each Point of melt feed is kept constant over time.
  • a particularly low overheating of the melt in the melt container can be maintained if the melt is discharged from an essentially vertically arranged melt feed line from the melt container into an inclined, preferably essentially horizontally arranged, short melt feed line.
  • a short melt feed line can also be achieved in that the melt flows faster in the substantially vertically arranged melt feed line than in the melt feed line inclined to it and is introduced therein essentially tangentially to the cross section thereof.
  • a device for the continuous casting of metallic melts in particular higher melting metals and alloys, e.g. Steel, with a melt container, essentially horizontally arranged, preferably liquid-cooled mold and at least one melt feed line and a strand draw-off device arranged between them, essentially consists in the melt feed line having at least two adjoining sections with different cross sections, viewed in the flow direction of the melt, one section, preferably with the smaller cross-sectional area, opens into the following essentially tangentially.
  • the axes of the melt feed in the area of the diversion are skewed and preferably have a normal distance of 1/2 to 1/6 of the inner diameter of the melt feed with the larger cross-sectional area from one another.
  • the melt feed line in the melt container can be closed with a stopper.
  • FIG. 1 shows the schematic representation of a horizontal continuous casting installation in section and FIG. 2 shows the section through a melt feed line.
  • the melt container 1 has a melt feed line 2 which opens into the liquid-cooled mold 4 via an outlet opening of the nozzle block 3.
  • the smallest free cross-sectional area of the nozzle stone is smaller than that of the mold.
  • the melt feed line protruding from the melt container is fastened to the melt container 1 by means of a clamp 5.
  • the melt supply to the mold can be prevented by lowering the stopper 6.
  • the melt feed line has different cross sections, the section 7 lying first in the direction of flow opening tangentially into the following section 8. In the mouth area, the cross section 7 is essentially slit-shaped.
  • section 9 shows a further section through a melt feed line, the section 9 with axis 11 of the melt feed line, which has an essentially circular cross section, opening tangentially into section 10 with axis 12 of the melt feed line, which likewise has a circular cross section.
  • the cross-sectional area of section 9 is approximately 15 cm 2 , whereas that of section 10 is 43 cm 2 .
  • the normal distance a is approx. 1/4 of the inner diameter d of the melt feed line with the larger cross-sectional area.
  • iron-based alloys and carbon steels with different compositions were initially cast using the horizontal continuous casting process.
  • the casting cross sections were 0 96 mm and qu. 100 mm.
  • the melt weights were 2.5 and 14 t.
  • the strand material was subjected to extensive quality testing. For this, the examination was carried out in the transverse and longitudinal directions of the strand.
  • the casting speed was 1.6 m / min.
  • the casting cross section was qu. 100 mm.
  • the overheating of the alloy at the beginning of the casting was 80 ° C.
  • the steel temperature in the melt container was accordingly 1540 ° C.
  • the cross-sectional shape of the strands was square, the rotation of the melt causing no cooling stress cracks in the strand, even with high steel overheating occurred.
  • the crystallization form was largely globulitic.
  • the eccentricity of the blow hole could be reduced considerably, while at the same time a significant reduction in the notches on the strand surface could be achieved. Subsequent hot deformations showed no cracks after the first deformation stitch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP19850890141 1984-06-26 1985-06-25 Procédé et dispositif pour la coulée continue de bains métalliques Expired EP0166718B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT206084A AT387165B (de) 1984-06-26 1984-06-26 Vorrichtung zum stranggiessen von metallischen schmelzen
AT2060/84 1984-06-26

Publications (3)

Publication Number Publication Date
EP0166718A2 true EP0166718A2 (fr) 1986-01-02
EP0166718A3 EP0166718A3 (en) 1986-09-17
EP0166718B1 EP0166718B1 (fr) 1989-05-31

Family

ID=3526920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850890141 Expired EP0166718B1 (fr) 1984-06-26 1985-06-25 Procédé et dispositif pour la coulée continue de bains métalliques

Country Status (4)

Country Link
EP (1) EP0166718B1 (fr)
JP (1) JPS619946A (fr)
AT (1) AT387165B (fr)
DE (1) DE3570613D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115717208A (zh) * 2021-08-24 2023-02-28 昆山晶微新材料研究院有限公司 一种航空用铝合金材料及生产方法
CN115717208B (zh) * 2021-08-24 2024-05-24 昆山晶微新材料研究院有限公司 一种航空用铝合金材料及生产方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6298899B1 (en) * 1999-07-13 2001-10-09 Ford Global Tech., Inc. Water jacket core

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2342820B1 (de) * 1973-08-24 1974-08-15 Kloeckner Werke Ag Tauchausguss fuer eine Stranggiesskokille
CH558223A (de) * 1973-08-07 1975-01-31 Fischer Ag Georg Verfahren zum abscheiden von schlacken und anderen verunreinigungen aus metallschmelzen bei stranggussanlagen sowie stranggussanlage zur durchfuehrung des verfahrens.
DE2707774A1 (de) * 1976-02-24 1977-09-01 Alusuisse Verfahren und vorrichtung zum kontinuierlichen giessen einer metallschmelze in giessformen
DE2903234A1 (de) * 1978-02-10 1979-08-16 Asea Ab Verfahren und durchfuehrungsanordnung zum umruehren einer metallischen schmelze
US4202397A (en) * 1975-01-20 1980-05-13 Bethlehem Steel Corporation Method of continuously casting molten metal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1508799B1 (de) * 1965-10-08 1971-09-16 Calderon Wellman Ltd Vorrichtung zur zufuhr einer stahlschmelze zu stranggiess kokillen
DE1758575A1 (de) * 1967-06-29 1971-02-11 Koppers Co Inc Verfahren und Vorrichtung zur Herstellung eines Metallgussstranges
FR2213121B1 (fr) * 1972-11-06 1975-04-25 Siderurgie Fse Inst Rech
CH604956A5 (en) * 1974-12-24 1978-09-15 Fischer Ag Georg Runner system for vertically split casting moulds
AT343839B (de) * 1976-08-20 1978-06-26 Voest Ag Verfahren und vorrichtung zum kontinuierlichen giessen eines stahlstranges
DE2825360C2 (de) * 1978-06-09 1983-10-27 Fried. Krupp Gmbh, 4300 Essen Induktiv beheizte Rinne zum Zuführen von Metall in eine Stranggießkokille

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH558223A (de) * 1973-08-07 1975-01-31 Fischer Ag Georg Verfahren zum abscheiden von schlacken und anderen verunreinigungen aus metallschmelzen bei stranggussanlagen sowie stranggussanlage zur durchfuehrung des verfahrens.
DE2342820B1 (de) * 1973-08-24 1974-08-15 Kloeckner Werke Ag Tauchausguss fuer eine Stranggiesskokille
US4202397A (en) * 1975-01-20 1980-05-13 Bethlehem Steel Corporation Method of continuously casting molten metal
DE2707774A1 (de) * 1976-02-24 1977-09-01 Alusuisse Verfahren und vorrichtung zum kontinuierlichen giessen einer metallschmelze in giessformen
DE2903234A1 (de) * 1978-02-10 1979-08-16 Asea Ab Verfahren und durchfuehrungsanordnung zum umruehren einer metallischen schmelze

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115717208A (zh) * 2021-08-24 2023-02-28 昆山晶微新材料研究院有限公司 一种航空用铝合金材料及生产方法
CN115717208B (zh) * 2021-08-24 2024-05-24 昆山晶微新材料研究院有限公司 一种航空用铝合金材料及生产方法

Also Published As

Publication number Publication date
DE3570613D1 (en) 1989-07-06
EP0166718A3 (en) 1986-09-17
JPS619946A (ja) 1986-01-17
AT387165B (de) 1988-12-12
ATA206084A (de) 1988-05-15
EP0166718B1 (fr) 1989-05-31

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