EP0904873A1 - Moule en forme d'entonnoir pour coulée continue de metal - Google Patents
Moule en forme d'entonnoir pour coulée continue de metal Download PDFInfo
- 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
Links
- 238000009749 continuous casting Methods 0.000 title claims description 7
- 239000002184 metal Substances 0.000 title claims description 3
- 238000005266 casting Methods 0.000 claims description 14
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005058 metal casting Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
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)
- Crushing And Grinding (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Manufacture And Refinement Of Metals (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742795A DE19742795A1 (de) | 1997-09-27 | 1997-09-27 | Trichtergeometrie einer Kokille zum Stranggießen von Metall |
DE19742795 | 1997-09-27 |
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)
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)
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)
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)
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 |
-
1997
- 1997-09-27 DE DE19742795A patent/DE19742795A1/de not_active Withdrawn
-
1998
- 1998-09-16 EP EP98117587A patent/EP0904873B2/fr not_active Expired - Lifetime
- 1998-09-16 AT AT98117587T patent/ATE219976T1/de active
- 1998-09-16 DE DE59804640T patent/DE59804640D1/de not_active Expired - Lifetime
- 1998-09-16 ES ES98117587T patent/ES2183267T5/es not_active Expired - Lifetime
- 1998-09-17 US US09/154,908 patent/US6186220B1/en not_active Expired - Lifetime
- 1998-09-22 ZA ZA989657A patent/ZA988657B/xx unknown
- 1998-09-25 JP JP27174698A patent/JP4289702B2/ja not_active Expired - Fee Related
- 1998-09-26 CN CN98125062A patent/CN1106238C/zh not_active Expired - Fee Related
- 1998-09-26 KR KR1019980040129A patent/KR100594624B1/ko not_active IP Right Cessation
- 1998-12-03 TW TW087120047A patent/TW380064B/zh not_active IP Right Cessation
Patent Citations (3)
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)
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 |
---|---|
DE59804640D1 (de) | 2002-08-08 |
EP0904873B1 (fr) | 2002-07-03 |
ES2183267T3 (es) | 2003-03-16 |
DE19742795A1 (de) | 1999-04-01 |
JPH11156488A (ja) | 1999-06-15 |
US6186220B1 (en) | 2001-02-13 |
ES2183267T5 (es) | 2012-01-24 |
JP4289702B2 (ja) | 2009-07-01 |
KR100594624B1 (ko) | 2006-08-30 |
ZA988657B (en) | 1999-06-04 |
CN1220195A (zh) | 1999-06-23 |
ATE219976T1 (de) | 2002-07-15 |
EP0904873B2 (fr) | 2011-10-26 |
CN1106238C (zh) | 2003-04-23 |
TW380064B (en) | 2000-01-21 |
KR19990030178A (ko) | 1999-04-26 |
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