EP0033311A2 - Procédé pour la modification du format de la section d'une barre pendant la coulée continue et dispositif pour la mise en oeuvre du procédé - Google Patents

Procédé pour la modification du format de la section d'une barre pendant la coulée continue et dispositif pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0033311A2
EP0033311A2 EP81890006A EP81890006A EP0033311A2 EP 0033311 A2 EP0033311 A2 EP 0033311A2 EP 81890006 A EP81890006 A EP 81890006A EP 81890006 A EP81890006 A EP 81890006A EP 0033311 A2 EP0033311 A2 EP 0033311A2
Authority
EP
European Patent Office
Prior art keywords
strand
side wall
mold
sealing body
casting
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.)
Ceased
Application number
EP81890006A
Other languages
German (de)
English (en)
Other versions
EP0033311A3 (fr
Inventor
Walter Fortner
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.)
Voestalpine AG
Original Assignee
Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
Publication of EP0033311A2 publication Critical patent/EP0033311A2/fr
Publication of EP0033311A3 publication Critical patent/EP0033311A3/fr
Ceased 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
    • B22D11/05—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds into moulds having adjustable walls

Definitions

  • the invention relates to a method for changing the strand cross-sectional format in continuous continuous casting, in particular in steel continuous casting, using a mold, at least one mold side wall being adjusted against an opposite mold side wall.
  • the mold has mold side walls divided at half the height.
  • the bath level in the mold is first lowered below the parting level of the mold side walls, then the upper wall part of the divided side walls is laterally moved in parallel according to the new strand cross-sectional format, then a specially made cooling scrap container with cooling scrap is inserted, the bath level is raised and finally the lower wall part the divided mold narrow side wall corresponding to the upper wall part moved parallel.
  • the change in format according to DE-OS 2 018 962 is cumbersome to carry out and requires a complicated mold. Furthermore, it is necessary to manufacture refrigerated scrap containers of complex shapes, the dimensions of which must correspond exactly to both the new and the old strand cross-sectional format.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to provide a method for changing the strand cross-sectional format, which is simple and can be carried out without termination of the casting using molds of conventional design.
  • a coolant preferably cooling scrap, is advantageously applied to the strand end after removal of the slag located on the end of the strand.
  • the end of the strand is advantageously lowered by pulling out the strand after removing the slag and before continuing the pouring.
  • Sealing the sealing body against the adjustable mold side wall is particularly easy if the mold side wall is initially adjusted to a format larger than the new strand cross-sectional format and is adjusted to the new strand cross-sectional format after inserting the sealing body while clamping the sealing body.
  • a device for performing the method according to the invention with a mold having at least one adjustable mold side wall is characterized in that a sealing body which can be inserted into the space between the strand and the adjusted mold side wall, preferably a pocket-shaped sheet metal, the edge of which is turned towards the strand at the upper edge of the strand shell can be attached, is provided.
  • the mold 1 shown in the drawing is a plate mold with broad side walls 2 and with narrow side walls 3, 4 that can be moved to different strand widths.
  • Casters 5 are arranged at the lower end of the mold 1.
  • the procedure is as follows: The casting is first interrupted. Since the top of the mold level is covered by a layer of slag made from mold powder (which initially prevents the mold level from solidifying) and since the strand is cooled further in the mold and in the secondary cooling zone, the molten core 11 of the melt is reduced in volume Stranges, which volume reduction results in a lowering of the casting level.
  • the slag on the casting level is removed, whereupon the casting level solidifies and forms a strand shell part 14 covering the molten core 11 towards the end face 13 of the strand.
  • the strand shell 9 forming the side walls bulges inward in the region of the upper end of the strand, as a result of which a cavity 15 which is open towards the top and tapered towards the top is formed.
  • the formation of the shell part 14 covering the strand end face is intensified by applying cooling scrap to this shell part 14.
  • the side walls 3, 4, in the exemplary embodiment shown the side wall 3, is adjusted outwards, etc. to the position shown in the drawing with solid lines.
  • the inclination of the narrow mold side walls 3, 4 which has changed in accordance with the new strand width 10 is also taken into account.
  • a space is then formed in the space 16 delimited between the narrow mold side wall 3 and the wide mold sides 2 and by the shell 9 of the strand.
  • Pocket-shaped sheet metal forming sealing body 17 is introduced, which rests with its boundary edges on the broad mold sides 2 and on the narrow mold side 3 and is attached to the upper end of the strand shell with a bent edge 18.
  • the sealing body 17 It is not absolutely necessary for the sealing body 17 to bear against the mold side walls when it is introduced, but it is also possible to seal a gap existing between the sealing body 17 and the mold side walls 2 or 3 by means of a sealing cord, etc. It has proven to be particularly advantageous if the mold narrow side 3 to be adjusted is first shifted outward and the desired strand format 10 is exceeded by a dimension 19, as shown in broken lines in the drawing, then the sealing body 17 is inserted and then the mold narrow side 3 is followed on the inside to the desired strand width 10, the sealing body 17 being clamped between the strand 8 and the mold narrow side 3.
  • the sealing body 17 After the sealing body 17 has been introduced, it is covered with cooling scrap 20 or chips etc., whereupon the sprue of the new strand is started, which can either have the same chemical composition as the strand 8 that has already been cast or also because it is mixed with the molten core 11 is avoided, may have a different chemical composition than that Strand 8.
  • the new strand is not only connected to the already encapsulated strand 8 by fusion, but also mechanically connected due to the cavity 15 of the strand 8 tapering upwards.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP81890006A 1980-01-25 1981-01-16 Procédé pour la modification du format de la section d'une barre pendant la coulée continue et dispositif pour la mise en oeuvre du procédé Ceased EP0033311A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT416/80 1980-01-25
AT41680A AT364105B (de) 1980-01-25 1980-01-25 Verfahren zum aendern des strangquerschnittformates beim kontinuierlichen stranggiessen sowie einrichtung zur durchfuehrung des verfahrens

Publications (2)

Publication Number Publication Date
EP0033311A2 true EP0033311A2 (fr) 1981-08-05
EP0033311A3 EP0033311A3 (fr) 1981-08-19

Family

ID=3490043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81890006A Ceased EP0033311A3 (fr) 1980-01-25 1981-01-16 Procédé pour la modification du format de la section d'une barre pendant la coulée continue et dispositif pour la mise en oeuvre du procédé

Country Status (3)

Country Link
EP (1) EP0033311A3 (fr)
JP (1) JPS56105847A (fr)
AT (1) AT364105B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4441543A (en) * 1980-06-10 1984-04-10 Nisshin Steel Co., Ltd. Method of enlarging width of continuously cast strand
AT406745B (de) * 1998-11-10 2000-08-25 Voest Alpine Ind Anlagen Verfahren und vorrichtung zum ändern der dicke eines stranges

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2934801B2 (ja) * 1991-09-30 1999-08-16 愛三工業株式会社 電磁誘導式回転検出器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2018962A1 (en) * 1970-04-21 1971-11-04 Schloemann AG, 4000 Dusseldorf Casting profile width change without shut-down in continuous casting
DE2550012A1 (de) * 1974-11-08 1976-05-13 Nippon Steel Corp Verfahren zum aendern der strangbreite beim stranggiessen
DE2841656A1 (de) * 1978-09-25 1980-04-03 Schloemann Siemag Ag Verfahren zur breitenaenderung eines giesstranges beim kontinuierlichen giessen von stahl in einer stranggiessanlage
DE2903245A1 (de) * 1979-01-29 1980-08-07 Sumitomo Metal Ind Verfahren und vorrichtung zum aendern der breite eines gusstranges

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2018962A1 (en) * 1970-04-21 1971-11-04 Schloemann AG, 4000 Dusseldorf Casting profile width change without shut-down in continuous casting
DE2550012A1 (de) * 1974-11-08 1976-05-13 Nippon Steel Corp Verfahren zum aendern der strangbreite beim stranggiessen
DE2841656A1 (de) * 1978-09-25 1980-04-03 Schloemann Siemag Ag Verfahren zur breitenaenderung eines giesstranges beim kontinuierlichen giessen von stahl in einer stranggiessanlage
DE2903245A1 (de) * 1979-01-29 1980-08-07 Sumitomo Metal Ind Verfahren und vorrichtung zum aendern der breite eines gusstranges

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4441543A (en) * 1980-06-10 1984-04-10 Nisshin Steel Co., Ltd. Method of enlarging width of continuously cast strand
AT406745B (de) * 1998-11-10 2000-08-25 Voest Alpine Ind Anlagen Verfahren und vorrichtung zum ändern der dicke eines stranges

Also Published As

Publication number Publication date
ATA41680A (de) 1981-02-15
JPS56105847A (en) 1981-08-22
EP0033311A3 (fr) 1981-08-19
AT364105B (de) 1981-09-25

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Inventor name: FORTNER, WALTER