EP0766608B1 - Coquille de coulee continue - Google Patents

Coquille de coulee continue Download PDF

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Publication number
EP0766608B1
EP0766608B1 EP96909916A EP96909916A EP0766608B1 EP 0766608 B1 EP0766608 B1 EP 0766608B1 EP 96909916 A EP96909916 A EP 96909916A EP 96909916 A EP96909916 A EP 96909916A EP 0766608 B1 EP0766608 B1 EP 0766608B1
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EP
European Patent Office
Prior art keywords
continuous casting
casting mold
taper
mold
center region
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 - Lifetime
Application number
EP96909916A
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German (de)
English (en)
Other versions
EP0766608A1 (fr
Inventor
Franz Wimmer
Heinrich THÖNE
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.)
Primetals Technologies Austria GmbH
Original Assignee
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
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Application filed by Voest Alpine Industrienlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP0766608A1 publication Critical patent/EP0766608A1/fr
Application granted granted Critical
Publication of EP0766608B1 publication Critical patent/EP0766608B1/fr
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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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • 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
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting

Definitions

  • the invention relates to a continuous casting mold for casting a strand with polygonal Cross-section, with side walls forming a mold cavity with a polygonal cross-section limit, with side walls having a central region extending in the casting direction a first conicity and laterally adjoining the central area with a side area have less taper than the first taper.
  • a continuous casting mold of this type is known from EP-A-0 179 364. According to this The edge angle between adjacent side walls of the document decreases Continuous casting mold in the direction of the strand, i.e. Pouring direction, with the proviso that the tensile stresses in the edge area caused by the shrinkage of the strand shell continuously reduce or compensate. This is intended to cause the strand shell to become detached from the cooled mold wall in the area of the corners to avoid this to achieve uniform shell growth, in particular a uniformly thick shell.
  • this is disadvantageous for the following reason:
  • the invention aims at avoiding these disadvantages and difficulties and presents itself the task of creating a continuous casting mold in which an even shell growth with at the same time only low frictional forces between the strand and the continuous casting mold is ensured.
  • a lifting of the strand shells in the edge area of the Strands go so deliberately that weak spots locally adjacent to the edges no longer occur and significantly reduces the risk of breakthrough in these areas, if not avoided altogether.
  • the central region is conical which is greater than a conicity adapted to the strand shrinkage and that the width of the side areas in the casting direction to the end of the continuous casting mold is increasingly trained to enlarge.
  • a plate mold for the continuous casting of a slab is known from JP-A-61 049 751, which is formed by two broad sides and two narrow sides. To avoid longitudinal cracks the narrow sides of the strand are arched convex, etc. from top to bottom increasingly.
  • EP-A-0 498 296 relates to a mold for the continuous casting of metals, in particular of Steel with the mold cavity on the pouring side and on the strand exit side has different geometric shapes.
  • the strand should be one within the mold Participate in targeted deformation of the strand cross-section, which improves cooling the strand crust is to be reached.
  • each side wall has a one Cross-sectional enlargement bulge, where the degree of bulge reduced in the strand running direction so that the strand cross-sectional shape during the passage deformed by the mold.
  • the central region preferably extends from the end of the continuous casting mold to at least in the area of the mold level, the middle area expediently from a flat surface is formed and has a constant taper over its entire length.
  • a sharp rise in the between the strand shell and the mold side walls prevailing frictional forces are reliably avoided if the central area has a Taper in the range between 1.5 to 2.5% / m mold length, preferably in the range between 2 and 2.5% / m mold length.
  • the side regions preferably extend from the end of the continuous casting mold to below the area of the mold level, but up to the upper half of the mold, i.e. it is sufficient, if the side areas only extend to where, for the first time, the Strand shell takes place in the edge area.
  • the side areas are convex in cross section arched, advantageously at the transition from the side areas to the central area the side areas and the middle area have a common tangential surface.
  • the mold expediently has the convexly curved cross section of the side areas starting increasing curvature from the transition to the central area to the corner area.
  • a side wall of the continuous casting mold according to the invention is easy to manufacture if the convex curved cross section of the side areas of circular lines with two different ones Radii is formed, which have a tangential transition.
  • the taper of the side regions is preferably less than one of the strand shrinkage adapted conicity.
  • Adequate release of the edge areas of the strand is given when the Taper of the side areas in the corner areas of the mold cavity maximum 1.5 to The length of the mold is 2.0% / m, the taper of the side regions advantageously being minimal 0% / m mold length.
  • the transitions from the central area to the side areas each go from Corner areas of adjacent side surfaces of the continuous casting mold and approach - Seen in the casting direction - arcuate the center line of symmetry of a side wall, the arcuate transitions advantageously increasing towards the end of the continuous casting mold Have curvature.
  • Fig. 1 is a view Inside of a side wall of a continuous casting mold and Fig. 2 is a plan view of a Continuous casting mold, which is formed from four of the side walls shown in Fig. 1 show.
  • Fig. 3 illustrates a section along the line III-III of Fig. 1 in enlarged Scale. 4 and 5, edge regions are each one on an enlarged scale Continuous casting mold in cross-section with the strand located in the continuous casting mold
  • Fig. 4 shows the relationships which exist in a conventional Continuous casting mold occur and Fig. 5 shows the conditions in an inventive Continuous casting mold reproduces.
  • the side wall 1 of a continuous casting mold 2 shown in FIG. 1 serves to form a mold in FIG. 2 shown mold cavity 3, which has approximately a cross section of a billet.
  • the Side wall 1 has an extending from top to bottom. i.e. from pouring area 4 to to the end 5 of the continuous casting mold 2 extending, central region 6, which is symmetrical to Longitudinal central axis 7 or center of symmetry of the side wall 1 is formed.
  • This The central region 6 is approximately tongue-shaped, but the central region is in the Pouring area 4 and preferably over an area 8, which makes a little more than that first quarter of the longitudinal extent 9 of the side wall 1, over the entire width 10 of the Side wall 1 extends.
  • the area 8 extends with a mold length of approximately 800 mm over a length of 200 to 250 mm.
  • side areas 11 connect laterally to the central area 6, the transitions 12 from the central region 6 to the side regions 11 in a plan view of the Side wall 1 are designed in an arc shape, with end 5 of the continuous casting mold 2 towards increasing curvature. This results in a continuous and in the casting direction the width of the side areas 11; the maximum width is on End 5 of the continuous casting mold 2.
  • the central region 6 has a taper that is greater than one of the strand shrinkage adapted taper, namely the taper is about 2 to 2.5% / m mold length 9. Der The central region 6 is flat and the taper of the central region 6 is above that entire length 9 of the side wall 1 kept constant.
  • the side areas 11, as can be seen in particular from FIG. 3, are convexly curved to the mold cavity 3 and connect tangentially to the central area 6 at the transition 12, so that there is no kink in the side wall 1 at the transition 12.
  • the convex curvature of the side regions 11 increases towards the corner regions 13 of the mold cavity 3. ie has an increasing curvature.
  • this increasing curvature - when considering the cross section of the side wall 1 - is realized by circular arcs with different radii R 1 and R 2 , an area with a very large radius R 1 adjoining the central area 6 and this area an area with a smaller radius R 2 connects.
  • the taper of the side areas 11 is less than the taper of the central area. It is expediently less than a taper adapted to the strand shrinkage: it is advantageously between a minimum of 0% / m mold length and 1.5% / m mold length.
  • Mold length of the side wall parts 11 is the extent of the indentation 14 of the corner regions 13 opposite the middle part 9 at the lower end 5 of the mold 2 with a mold side width 10 of 160 mm and a mold length of 800 mm about 1 mm
  • the taper of the Middle range is 2.5% / m mold length.
  • the central region 6 of the side wall 1 can over the area 8 of the mold over which it extends over the entire width 10 of the side wall 1 extends, have a higher conicity than over its remaining longitudinal region.
  • the shell 15 of the strand is membrane-like, particularly in the central region soft, and it can therefore easily adapt to the central region 6 of the side walls 1 adjust existing excessive taper.
  • an abutment of the continuous shell 15 on the side walls 1 of the continuous casting mold 2 causes, namely on the side regions 11 of the side walls 1, but without directly in the Corner areas 13 a contact pressure between the continuous casting mold 2 and the continuous shell 15 to evoke.
  • the lower taper of the side areas 11 in combination with the Exaggerated conicity of the central areas 6 in this when casting with conventional A safe support and therefore a good support for the transition area at risk Contact and thus heat transfer through heat conduction.
  • the continuous casting mold according to the invention is largely insensitive to one Change the casting parameters. It ensures an even shell growth and allows an exemption of the edge regions 19 of the strand, in which none Shell weaknesses occur. As a result, there are frictional forces between strand shell 15 and side walls 1 of the continuous casting mold 2 and thus also the shell loading of the strand minimized. In addition, this also results in very little mold wear.
  • the invention is not limited to the exemplary embodiment shown in the drawing, but it can be modified in various ways.
  • the continuous casting mold 2 can both be designed as a tubular mold as well as a plate mold. Your bet is not on that Limited vertical pouring.
  • the mold cavity can also have a curved central axis exhibit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Confectionery (AREA)

Claims (14)

  1. Coquille de coulée continue (2) pour couler une barre de section polygonale, comprenant des parois latérales (1) qui limitent une cavité (3) de coquille de section polygonale, des parois latérales (1) présentant une zone médiane (6) s'étendant dans le sens de la coulée ayant une première conicité et des zones latérales (11) latéralement contiguës à la zone médiane (6) ayant une conicité inférieure à la première conicité, caractérisée en ce que la zone médiane (6) présente une conicité qui est plus grande qu'une conicité adaptée au rétrécissement de la barre et en ce que la largeur des zones latérales (11) va en s'agrandissant dans le sens de la coulée jusqu'à l'extrémité (5) de la coquille de coulée continue (2).
  2. Coquille de coulée continue selon la revendication 1, caractérisée en ce que la zone médiane (6) s'étend de l'extrémité (5) de la coquille de coulée continue (2) au moins jusque dans la zone de surface (4, 8) de la coulée.
  3. Coquille de coulée continue selon la revendication 1 ou 2, caractérisée en ce que la zone médiane (6) est formée par une surface plane.
  4. Coquille de coulée continue selon une ou plusieurs des revendications 1 à 3, caractérisée en ce que la zone médiane (6) présente sur toute sa longueur (9) une conicité constante.
  5. Coquille de coulée continue selon une ou plusieurs des revendications 1 à 4, caractérisée en ce que la zone médiane (6) présente une conicité de l'ordre de 1,5 à 2,5 %/m de la longueur de la coquille, de préférence de l'ordre de 2 à 2,5 %/m de la longueur de la coquille.
  6. Coquille de coulée continue selon une ou plusieurs des revendications 1 à 5, caractérisée en ce que les zones latérales (11) s'étendent de l'extrémité (5) de la coquille de coulée continue (2) jusqu'en dessous de la zone de surface de la coulée (4, 8), toutefois jusque dans la moitié supérieure de la coquille.
  7. Coquille de coulée continue selon une ou plusieurs des revendications 1 à 6, caractérisée en ce que les zones latérales (11) ont une section transversale en forme de courbe convexe.
  8. Coquille de coulée continue selon la revendication 7, caractérisée en ce qU'au niveau de la transition (12) des zones latérales (11) à la zone médiane (6), les zones latérales (11) et la zone médiane (6) présentent une surface tangentielle commune.
  9. Coquille de coulée continue selon la revendication 7 ou 8, caractérisée en ce que la section transversale en forme de courbe convexe des zones latérales (11) présente à partir de la transition (12) vers la zone médiane (6) un cintrage croissant jusque dans la zone de coin (13).
  10. Coquille de coulée continue selon la revendication 9, caractérisée en ce que la section transversale en forme de courbe convexe des zones latérales (11) est formée de circonférences avec deux rayons différents (R1, R2) qui présentent une transition tangentielle.
  11. Coquille de coulée continue selon une ou plusieurs des revendications 1 à 10, caractérisée en ce que la conicité des zones latérales (11) est inférieure à une conicité adaptée au rétrécissement de la barre et est au maximum de 1,5 à 2,0 %/m de la longueur de la coquille dans les zones de coin (13) de la cavité (3) de la coquille.
  12. Coquille de coulée continue selon une ou plusieurs des revendications 1 à 11, caractérisée en ce que la conicité des zones latérales (11) est au minimum de 0 %/m de la longueur de la coquille.
  13. Coquille de coulée continue selon une ou plusieurs des revendications 1 à 12, caractérisée en ce que les transitions de la zone médiane (6) aux zones latérales (11) partent respectivement des surfaces latérales (1) de la coquille de coulée continue (2) contiguës aux zones de coin (13) et se rapprochent - vu dans la direction de la coulée - en arc de la ligne de symétrie (7) d'une paroi latérale (1).
  14. Coquille de coulée continue selon la revendication 13, caractérisée en ce que les transitions (12) en arc présentent un cintrage croissant jusqu'à l'extrémité (5) de la coquille de coulée continue.
EP96909916A 1995-04-18 1996-04-15 Coquille de coulee continue Expired - Lifetime EP0766608B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT66395 1995-04-18
AT663/95 1995-04-18
AT0066395A AT404235B (de) 1995-04-18 1995-04-18 Stranggiesskokille
PCT/AT1996/000072 WO1996033034A1 (fr) 1995-04-18 1996-04-15 Coquille de coulee continue

Publications (2)

Publication Number Publication Date
EP0766608A1 EP0766608A1 (fr) 1997-04-09
EP0766608B1 true EP0766608B1 (fr) 1999-11-03

Family

ID=3496540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96909916A Expired - Lifetime EP0766608B1 (fr) 1995-04-18 1996-04-15 Coquille de coulee continue

Country Status (7)

Country Link
US (1) US5799719A (fr)
EP (1) EP0766608B1 (fr)
KR (1) KR100236317B1 (fr)
CN (1) CN1081498C (fr)
AT (2) AT404235B (fr)
DE (1) DE59603553D1 (fr)
WO (1) WO1996033034A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2183120T3 (es) * 1997-12-24 2003-03-16 Europa Metalli Spa Lingotera de fundicion continua.
CH693130A5 (de) * 1998-05-18 2003-03-14 Concast Standard Ag Kokille zum Stranggiessen von im wesentlichen polygonalen Strängen.
AT407351B (de) * 1998-12-23 2001-02-26 Voest Alpine Ind Anlagen Stranggiesskokille
PT1547705E (pt) 2003-12-27 2008-06-06 Concast Ag Processo para o vazamento contínuo de lingotes em forma de barras e blocos e cavidade de molde de uma lingoteira destinada ao vazamento contínuo
US20090228714A1 (en) * 2004-11-18 2009-09-10 Biogy, Inc. Secure mobile device with online vault
DE102012207786A1 (de) 2012-05-10 2013-11-14 Sms Siemag Ag Stranggießkokille
DE102017130930A1 (de) * 2017-12-21 2019-06-27 Inteco Melting And Casting Technologies Gmbh Verfahren und Vorrichtung zum Stranggießen von Metall
KR102074364B1 (ko) * 2018-05-14 2020-02-06 주식회사 포스코 주형
CN113399637A (zh) * 2021-06-24 2021-09-17 重庆钢铁股份有限公司 一种预防q195钢方坯连铸浇注过程中裂纹漏钢的工艺
CN113857444A (zh) * 2021-10-10 2021-12-31 秦皇岛瀚丰长白结晶器有限责任公司 一种适合生产普碳钢的高拉速结晶器
DE102022207234A1 (de) * 2022-07-15 2024-01-18 Sms Group Gmbh Kupferplatte mit verbesserter Oberflächengeometrie

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226782A (en) * 1963-03-01 1966-01-04 United States Steel Corp Variable-taper casting mold
JPS5027027A (fr) * 1973-07-11 1975-03-20
US3910342A (en) * 1973-11-12 1975-10-07 Rossi Irving Molds for continuous casting
US4207941A (en) * 1975-06-16 1980-06-17 Shrum Lorne R Method of continuous casting of metal in a tapered mold and mold per se
US4023612A (en) * 1975-11-25 1977-05-17 Inland Steel Company Continuous casting mold and process of casting
US4694880A (en) * 1982-09-16 1987-09-22 Gladwin Kirk M Method of continuously casting metal slabs
DE3427756A1 (de) * 1984-07-24 1985-03-28 Mannesmann AG, 4000 Düsseldorf Stranggiesskokille fuer die herstellung von straengen aus stahl
JPS6149751A (ja) * 1984-08-17 1986-03-11 Nippon Steel Corp 連続鋳造用鋳型
CH664915A5 (de) * 1984-10-26 1988-04-15 Concast Service Union Ag Durchlaufkokille zum stranggiessen von stahlstraengen mit polygonalem querschnitt.
CH683327A5 (de) * 1990-02-21 1994-02-28 Concast Standard Ag Vorrichtung zum Stranggiessen.
ATE105750T1 (de) * 1991-02-06 1994-06-15 Concast Standard Ag Kokille zum stranggiessen von metallen, insbesondere von stahl.
US5409053A (en) * 1991-02-06 1995-04-25 Concast Standard Ag Continuous casting mold
DK0627968T3 (da) * 1992-03-05 1996-01-08 Concast Standard Ag Fremgangsmåde til strengstøbning af metal, især stål i barre- og råblokform
JP3261766B2 (ja) * 1992-11-10 2002-03-04 セイコーエプソン株式会社 マルチプロセッサシステム、共有変数更新装置、プロセッサユニット及び共有変数更新方法

Also Published As

Publication number Publication date
CN1150769A (zh) 1997-05-28
DE59603553D1 (de) 1999-12-09
WO1996033034A1 (fr) 1996-10-24
KR100236317B1 (ko) 1999-12-15
ATA66395A (de) 1998-02-15
AT404235B (de) 1998-09-25
EP0766608A1 (fr) 1997-04-09
KR970703827A (ko) 1997-08-09
US5799719A (en) 1998-09-01
CN1081498C (zh) 2002-03-27
ATE186245T1 (de) 1999-11-15

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