EP0904873A1 - Moule en forme d'entonnoir pour coulée continue de metal - Google Patents

Moule en forme d'entonnoir pour coulée continue de metal Download PDF

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Publication number
EP0904873A1
EP0904873A1 EP98117587A EP98117587A EP0904873A1 EP 0904873 A1 EP0904873 A1 EP 0904873A1 EP 98117587 A EP98117587 A EP 98117587A EP 98117587 A EP98117587 A EP 98117587A EP 0904873 A1 EP0904873 A1 EP 0904873A1
Authority
EP
European Patent Office
Prior art keywords
mold
side walls
section
broad side
funnel
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
EP98117587A
Other languages
German (de)
English (en)
Other versions
EP0904873B2 (fr
EP0904873B1 (fr
Inventor
Jürgen Dr.-Ing. Sucker
Holger Dr.-Ing. Beyer-Steinhauer
Romeo Ing. Capotosti
Alessandro Dipl.-Ing. Cristallini
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.)
Sms Siemag AG En Acciai Speciali Terni SpA
Original Assignee
SMS Schloemann Siemag AG
SMS Demag AG
Schloemann Siemag AG
Acciai Speciali Terni SpA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7843886&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0904873(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SMS Schloemann Siemag AG, SMS Demag AG, Schloemann Siemag AG, Acciai Speciali Terni SpA filed Critical SMS Schloemann Siemag AG
Publication of EP0904873A1 publication Critical patent/EP0904873A1/fr
Application granted granted Critical
Publication of EP0904873B1 publication Critical patent/EP0904873B1/fr
Publication of EP0904873B2 publication Critical patent/EP0904873B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B22D11/0406—Moulds with special profile
    • 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
    • B22D11/0408—Moulds for casting thin slabs

Definitions

  • the invention relates to a mold for the continuous casting of metal a cooled broadside and narrow side walls, funnel-shaped in the casting direction to the format of the cast strand tapered pouring area.
  • the dimensions of the pouring area are essentially determined by the cross section of the strand to be cast, the dimensions of the Pouring tube and its immersion depth in the melt determined.
  • EP 0 268 910 B1 proposes that below the casting level to guide thin strand shell without deformation by the broad side walls in the pouring area in a first section essentially run parallel to each other and in an adjoining one Section can be traced back to the thickness of the casting format, whereby the first section to below that to be set at the casting shop Casting level in the area of the first strand shell formation enough.
  • the total shape change imposed on the strand by the mold, which is used to reduce the strand to the thickness of the Casting format is required extends to the subsequent Section by inclined or curved surfaces or combination the same is formed.
  • EP 0 552 501 A2 discloses a mold for the continuous casting of Steel band, in which the broad side walls are funnel-shaped Form the pouring area to the narrow side walls and in the pouring direction is reduced to the format of the cast tape.
  • the Curvature of the funnel-shaped pouring area is due to lateral Circular arcs and middle ones connected to them at tangent points Arcs determined.
  • the tensile and bending stresses of the strand shell are Radii of the lateral arcs in a minimum of 100 mm from the The upper part of the mold downward-reaching section remains constant educated.
  • DE 39 07 351 A1 discloses a proposal, the pouring funnel a mold so that the deformation of the metal casting is distributed over the greatest possible route length and constrictions as well as cracks in the strand shell of the metal casting strand be avoided.
  • the Contour of the inner wall of the pouring funnel in the direction of the passage is formed by three tangential arcs, the radii of which gradually increase in the direction of passage of the strand, merge into the contour of the inner wall of the mold.
  • One if possible uniform distribution of the change in shape of the strand shell in one pouring area shaped in this way is achieved in that the Radii in the direction of pass through with the same or different Factor increase.
  • the present invention is based on the aforementioned prior art the task, another funnel geometry of a mold specify the friction and wear between the strand shell and mold walls are reduced even better and especially in the Strand shell formation of a comparatively high shrinkage tending steel an even more significant reduction in error the slab surface as a result of the most uniform possible Setting the shape change is realized.
  • the invention is based on the finding that in the pouring area by the transition from a horizon to an underlying one Horizon-related change in length of the mold contour on each Horizon has a maximum and that this maximum is above average local deformation or increased tendency to local Gap formation between the strand and the mold wall corresponds. Out of it shows that the pouring area is at least a maximum of Changes in length of the horizontal mold contour and that a distribution of the shape change as evenly as possible over the pouring area is achieved by making this maximum possible is low.
  • the object is achieved with the invention in that in The inner contours of the broad side walls in the pouring direction from top to bottom at least two points each with the property exhibit that they determine a straight line along which the Inner contours of these broad side walls with at least one concave and with at least one convex section of any order are trained.
  • the Inner contours of the broad side walls at least along a partial length one from the upper edge of the mold to the lower edge of the mold drawn straight lines in the casting direction from top to bottom with at least one concave section and with at least one convex Section of any sequence are formed.
  • the object is also achieved with the invention in that in the funnel area along the inner contours of the broad side walls one the upper edge of the mold and the beginning of the lower section straight lines connecting the broad side walls in the casting direction from above down with at least one concave section and with at least one a convex section of any sequence are formed.
  • concave sections and convex sections can be used the broad side walls merge directly into one another.
  • Each of the concave sections or convex sections of the broad sidewalls both one in their Have course constant as well as a variable curvature.
  • An embodiment of the invention provides that the inner contours the broad side walls over the concave or over the convex Sections an arcuate course or a trigonometric, for example, have a sinusoidal shape.
  • the lower section of the mold has a parallel walled area has a particularly smooth transition between Funnel area and subsequent parallel-walled area realizes that the lower convex or concave area with a terminal lower circular arc in the rectilinear area with passes over a steady course.
  • An embodiment of the funnel geometry essential to the invention results from the measure that the curvatures of the individual sections of the broad side walls are formed with such radii that the greatest local change in length delta max (% / m) during the transition from a horizon to an underlying horizon is four times the value local length changes averaged over the funnel area, without taking into account parallel-walled sections, in particular not exceeding a value of 2.0% / m.
  • the invention provides a use of the claimed Chill mold for continuous casting from comparatively high to extremely high Peritectic carbon steels tend to shrink and austenitic stainless steels.
  • the three different funnel contours shown in Fig. 1 the broad side wall of a mold have a funnel-shaped shape Pouring direction tapered to the format of the cast strand A or a funnel-shaped in the casting direction to the format of the cast strand tapered pouring area B and one subsequent essentially parallel-walled area C.
  • This The mold area or the mold outlet need not be parallel Have exit surfaces or exit edges.
  • the lower mold area or the lower mold outlet can be in the middle area quite a small curvature of 1 to 15 mm per broad side wall exhibit.
  • funnel area A are the funnel contours of the broad side walls 4 along the upper edge of the mold 1 and the lower edge of the mold 3 connecting straight lines from top to bottom first with a concave Section a and then with a convex section b educated. It can be seen that the inner contour 4 of the Broad sidewalls over sections a and b have a sinusoidal shape Has history.
  • the funnel contours of the broad side walls 4 'or 4''along a straight line connecting the upper edge 1 of the mold and the beginning of the parallel-walled area 2 are first with a concave section a' or a '' and then with one convex section b 'or b''andc''formed.
  • the inner contours 4 'or 4''of the broad side walls have a sinusoidal course over the sections a' and b 'or a''andb''.
  • Fig. 1 also shows that the convex portion b '' with a terminal, lower circular arc c '' in the parallel-walled area d '' passes with a steady course.
  • the invention is still essential for the funnel geometry Measure that each of the concave sections a, a 'and a' 'and the convex sections b, b 'and b' 'both in their course have constant, as well as a variable curvature can.
  • the curvatures of the sections a, b, a ', b', a '', b '', c '' are designed with radii such that the greatest local change in length occurs when changing from a horizon to an underlying horizon delta max a value of 2.0% / m and at the same time does not exceed four times the local length changes averaged over the funnel area without taking into account the parallel-walled sections d 'and d''.
  • 3a and 3b show the same picture for the same mold conventional design, in which the vertical mold contour of the Broadside is formed by a straight line.
  • the maximum local change in length of 2.44% / m is essential greater. It can also be seen that the distribution of the shape change much more uneven and in the area of the upper edge of the mold, where strand shell formation is most sensitive is particularly large. It is precisely these disadvantages with the invention avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Crushing And Grinding (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP98117587A 1997-09-27 1998-09-16 Moule en forme d'entonnoir pour coulée continue de metal Expired - Lifetime EP0904873B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19742795 1997-09-27
DE19742795A DE19742795A1 (de) 1997-09-27 1997-09-27 Trichtergeometrie einer Kokille zum Stranggießen von Metall

Publications (3)

Publication Number Publication Date
EP0904873A1 true EP0904873A1 (fr) 1999-03-31
EP0904873B1 EP0904873B1 (fr) 2002-07-03
EP0904873B2 EP0904873B2 (fr) 2011-10-26

Family

ID=7843886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98117587A Expired - Lifetime EP0904873B2 (fr) 1997-09-27 1998-09-16 Moule en forme d'entonnoir pour coulée continue de metal

Country Status (10)

Country Link
US (1) US6186220B1 (fr)
EP (1) EP0904873B2 (fr)
JP (1) JP4289702B2 (fr)
KR (1) KR100594624B1 (fr)
CN (1) CN1106238C (fr)
AT (1) ATE219976T1 (fr)
DE (2) DE19742795A1 (fr)
ES (1) ES2183267T5 (fr)
TW (1) TW380064B (fr)
ZA (1) ZA988657B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002064286A2 (fr) * 2001-02-09 2002-08-22 Egon Evertz K.G. (Gmbh & Co) Coquille pour coulee continue
US6975877B1 (en) 2001-10-17 2005-12-13 Cisco Technology, Inc. System and method for synchronizing clock dividers in a wireless network

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100490985B1 (ko) * 2000-11-25 2005-05-24 주식회사 포스코 연속주조용 깔대기형 주형동판
DE10106328A1 (de) * 2001-02-09 2002-08-14 Evertz Egon Kg Gmbh & Co Stranggießkokille
AT410766B (de) * 2001-09-28 2003-07-25 Voest Alpine Ind Anlagen Durchlaufkokille
KR100940679B1 (ko) * 2002-12-27 2010-02-08 주식회사 포스코 박슬라브 연속주조용 깔대기형 주형
CN1292858C (zh) * 2004-01-17 2007-01-03 宝山钢铁股份有限公司 一种水冷的金属连铸结晶器
JP5018274B2 (ja) * 2007-06-28 2012-09-05 住友金属工業株式会社 丸ビレット鋳片の連続鋳造用鋳型および連続鋳造方法
SG2012079117A (en) 2012-10-24 2014-05-29 Pratt & Whitney Services Pte Ltd Casting funnel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268910A2 (fr) * 1986-11-27 1988-06-01 Sms Schloemann-Siemag Aktiengesellschaft Lingotière pour la coulée continue de bande en acier
EP0392952A1 (fr) * 1989-04-06 1990-10-17 Techmetal Promotion Procédé et installation de coulée de produits métalliques minces
EP0685280A1 (fr) * 1994-05-30 1995-12-06 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé de coulée continue d'acier à teneur élevée en carbone

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH617608A5 (fr) * 1977-04-06 1980-06-13 Concast Ag
FR2583662B1 (fr) * 1985-06-25 1987-09-25 Clecim Sa Procede et machine de coulee continue d'un produit metallique mince
JPH02207945A (ja) * 1989-02-08 1990-08-17 Sumitomo Metal Ind Ltd 丸型鋳片の連続鋳造用モールド
DE3907351C2 (de) 1989-03-08 1998-09-24 Schloemann Siemag Ag Eingießtrichter einer Kokille
JPH02284747A (ja) * 1989-04-24 1990-11-22 Sumitomo Metal Ind Ltd 連続鋳造用モールド
JPH04172153A (ja) * 1990-11-06 1992-06-19 Kawatetsu Techno Res Corp 連続鋳造方法及びその装置
DE4201363C2 (de) 1992-01-20 2000-08-10 Sms Demag Ag Kokille zum Stranggießen von Stahlband
JP2972051B2 (ja) * 1993-04-15 1999-11-08 住友重機械工業株式会社 鋼の連続鋳造用鋳型および連続鋳造方法
IT1267243B1 (it) * 1994-05-30 1997-01-28 Danieli Off Mecc Procedimento di colata continua per acciai peritettici
DE19710791C2 (de) * 1997-03-17 2000-01-20 Schloemann Siemag Ag Zueinander optimierte Formen der Stranggießkokille und des Tauchausgusses zum Gießen von Brammen aus Stahl
US5927378A (en) * 1997-03-19 1999-07-27 Ag Industries, Inc. Continuous casting mold and method
DE19728957A1 (de) † 1997-06-30 1999-01-07 Mannesmann Ag Verfahren und Vorrichtung zum Erzeugen von Dünnbrammen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268910A2 (fr) * 1986-11-27 1988-06-01 Sms Schloemann-Siemag Aktiengesellschaft Lingotière pour la coulée continue de bande en acier
EP0392952A1 (fr) * 1989-04-06 1990-10-17 Techmetal Promotion Procédé et installation de coulée de produits métalliques minces
EP0685280A1 (fr) * 1994-05-30 1995-12-06 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé de coulée continue d'acier à teneur élevée en carbone

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002064286A2 (fr) * 2001-02-09 2002-08-22 Egon Evertz K.G. (Gmbh & Co) Coquille pour coulee continue
WO2002064286A3 (fr) * 2001-02-09 2003-04-17 Evertz Egon Kg Gmbh & Co Coquille pour coulee continue
US6932147B2 (en) 2001-02-09 2005-08-23 Egon Evertz K.G. (Gmbh & Co.) Continuous casting ingot mould
US6975877B1 (en) 2001-10-17 2005-12-13 Cisco Technology, Inc. System and method for synchronizing clock dividers in a wireless network

Also Published As

Publication number Publication date
ATE219976T1 (de) 2002-07-15
ES2183267T3 (es) 2003-03-16
ZA988657B (en) 1999-06-04
KR100594624B1 (ko) 2006-08-30
EP0904873B2 (fr) 2011-10-26
JPH11156488A (ja) 1999-06-15
DE59804640D1 (de) 2002-08-08
DE19742795A1 (de) 1999-04-01
KR19990030178A (ko) 1999-04-26
CN1220195A (zh) 1999-06-23
CN1106238C (zh) 2003-04-23
EP0904873B1 (fr) 2002-07-03
JP4289702B2 (ja) 2009-07-01
TW380064B (en) 2000-01-21
ES2183267T5 (es) 2012-01-24
US6186220B1 (en) 2001-02-13

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