EP0920936A2 - Lingotière pour la coulée continue - Google Patents

Lingotière pour la coulée continue Download PDF

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Publication number
EP0920936A2
EP0920936A2 EP98122281A EP98122281A EP0920936A2 EP 0920936 A2 EP0920936 A2 EP 0920936A2 EP 98122281 A EP98122281 A EP 98122281A EP 98122281 A EP98122281 A EP 98122281A EP 0920936 A2 EP0920936 A2 EP 0920936A2
Authority
EP
European Patent Office
Prior art keywords
mold
side walls
funnel
broad side
area
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
EP98122281A
Other languages
German (de)
English (en)
Other versions
EP0920936A3 (fr
EP0920936B1 (fr
Inventor
Jürgen Dr.-Ing. Sucker
Romeo Ing. Capotosti
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
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
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 EP0920936A2 publication Critical patent/EP0920936A2/fr
Publication of EP0920936A3 publication Critical patent/EP0920936A3/fr
Application granted granted Critical
Publication of EP0920936B1 publication Critical patent/EP0920936B1/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 funnel geometry of a mold for Continuous casting of metal with a cooled broadside and narrow side walls showing, funnel-shaped in the pouring 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.
  • the strand shell lifts partially the mold wall. Due to the strong reheating in these Areas generate high thermal stresses that lead to errors to lead.
  • the defects are cracks, constrictions and structural disorders. These mistakes are more serious the stronger a steel to comparatively high shrinkage in the course of solidification and Cooling of the strand shell forming tends.
  • EP 0 268 910 proposes the broad side walls in the pouring area in a first section essentially parallel to each other run and in a subsequent section attributed to the thickness of the casting format, the first Section to below the level of the casting level to be set at the foundry in the area of the first strand shell formation. In this way, the thin layer below the casting level Strand shell are guided without deformation.
  • EP 0 552 501 discloses a mold for the continuous casting of steel strip, in which the broad side walls have a funnel-shaped pouring area form that to the narrow side walls and in the casting direction the format of the cast tape is reduced.
  • the funnel-shaped Pouring area is through lateral arcs and at tangent points arcs connected with these are determined.
  • the strand shell are the radii of the side Circular arcs in at least 100 mm from the upper edge of the mold downward extending section formed uniformly.
  • DE 39 07 351 A1 discloses a proposal, the contour of the Inner wall of the pouring funnel of a mold by three yourself to form tangentially touching arcs, their radii in the direction of the strand gradually growing into the contour of the Go over the inner wall of the mold. This way the deformation of the metal casting strand on the greatest possible length distributed, and constrictions and cracks in the strand shell of the metal casting strand are avoided. As uniform as possible Distribution of the change in shape of the strand shell in such a shaped Pouring area is achieved in that the radii in Increase strand flow direction with the same or different factor.
  • 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 due to the shrinking behavior of the Steel adapted tapering of the mold cross-section realized becomes.
  • the invention is based on the knowledge that given a horizontal contour of the funnel area the course of the taper of the mold cross section in the casting direction through the design the vertical contour can be specified.
  • the convex inner contour can be a constant as also have a variable curvature.
  • An embodiment of the invention provides that the convex inner contour the broad sidewalls an arcuate, poligonal or trigonometric course.
  • Another embodiment of the invention provides that the convex inner contour of the pouring area up to the mold outlet extends.
  • 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 convex contour with a terminal lower Circular arc in the rectilinear area with a steady course transforms.
  • the four 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 which the upper edge 1 of the mold and the lower edge of the mold 3 connecting straight lines are convex.
  • funnel area B are the funnel cones of the broad side walls 4 'or 4' 'or 4' '' along the upper edge 1 of the mold and the Start of the parallel-walled area 2 connecting straight lines convex educated. It can be seen that the inner contours of the Broad sidewalls each over sections a ', a' 'and a' '' circular, sinusoidal and polinomial exhibit.
  • Fig. 1 also shows that the convex portions a ', a' 'and a' '' with a steady course in the respective parallel wall Pass areas b ', b' 'and c' ''.
  • each convex section A, a ', a' 'and a' '' are both one in its course constant as well as a variable curvature can have.
  • Fig. 1 to 3 indicate the feature essential to the invention that with unchangeable parameters of the pouring area the introduction a convex vertical inner contour of the pouring area to one greater rejuvenation in the upper mold area and less Rejuvenation in the lower mold area leads.
  • the invention provides among other things a use of the claimed mold for the continuous casting of comparatively too extremely high shrinking peritectic carbon steels and austenitic stainless steels.
  • FIG. 6 shows various vertical convexes as an exemplary embodiment Hopper contours for a continuous casting coke with the ones already above mentioned parameters. These funnel contours are located in Fig. 4 given shrinkage profiles or those shown in Fig. 5 corresponding changes in length. Any of the given Shrinkage profiles correspond to a certain combination of Steel properties and casting parameters and can by theoretical Considerations and practical experience can be determined.
  • FIGS. 1 to 6 illustrate that regardless of the horizontal contour of the pouring area Taper the mold cross-section in the casting direction Limits can be set variably and therefore the shrinkage profile of the strand can be adjusted, which is generally not only depends on the properties of the steel to be cast, but also from other casting parameters, such as. B. the casting speed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP98122281A 1997-12-03 1998-11-24 Lingotière pour la coulée continue Expired - Lifetime EP0920936B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19753537A DE19753537A1 (de) 1997-12-03 1997-12-03 Trichtergeometrie einer Kokille zum Stranggießen von Metall
DE19753537 1997-12-03

Publications (3)

Publication Number Publication Date
EP0920936A2 true EP0920936A2 (fr) 1999-06-09
EP0920936A3 EP0920936A3 (fr) 2000-04-26
EP0920936B1 EP0920936B1 (fr) 2003-06-18

Family

ID=7850553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98122281A Expired - Lifetime EP0920936B1 (fr) 1997-12-03 1998-11-24 Lingotière pour la coulée continue

Country Status (12)

Country Link
US (2) US6390176B1 (fr)
EP (1) EP0920936B1 (fr)
JP (1) JPH11244996A (fr)
KR (1) KR100633030B1 (fr)
CN (1) CN1187144C (fr)
AT (1) ATE243082T1 (fr)
CA (1) CA2255279C (fr)
DE (2) DE19753537A1 (fr)
ES (1) ES2205367T3 (fr)
MY (1) MY131906A (fr)
TW (1) TW380065B (fr)
ZA (1) ZA9810910B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1099497A1 (fr) * 1999-11-10 2001-05-16 SMS Demag AG Lingotière pour la coulée continue de métal à région d'entrée en forme d'entonnoir

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410766B (de) * 2001-09-28 2003-07-25 Voest Alpine Ind Anlagen Durchlaufkokille
KR100910459B1 (ko) * 2002-06-05 2009-08-04 주식회사 포스코 강의 연속주조용 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
WO2015068753A1 (fr) * 2013-11-06 2015-05-14 ヤマハ発動機株式会社 Véhicule électrique de type à selle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3907351A1 (de) * 1989-03-08 1990-09-13 Schloemann Siemag Ag Kokille mit eingiesstrichter
EP0268910B1 (fr) * 1986-11-27 1991-09-04 Sms Schloemann-Siemag Aktiengesellschaft Lingotière pour la coulée continue de bande en acier
WO1994007628A1 (fr) * 1992-10-06 1994-04-14 Davy Mckee (Sheffield) Limited Moule de coulee continue
EP0552501B1 (fr) * 1992-01-20 1997-05-14 Sms Schloemann-Siemag Aktiengesellschaft Tingotière pour la coulée continue de bande en acier

Family Cites Families (9)

* 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
JPS617046A (ja) * 1984-01-26 1986-01-13 Kawasaki Steel Corp 薄肉鋳片連続鋳造用鋳型
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
JPH0360848A (ja) * 1989-07-31 1991-03-15 Nippon Steel Corp １８―８系オーステナイトステンレス薄板の製造方法
JP3063518B2 (ja) * 1993-12-27 2000-07-12 株式会社日立製作所 連続鋳造装置及び連続鋳造システム
DE4403045C1 (de) * 1994-01-28 1995-09-07 Mannesmann Ag Stranggießanlage zum Führen von Strängen
JP3122352B2 (ja) * 1995-10-12 2001-01-09 三菱重工業株式会社 連続鋳造設備用モールド
JPH09192785A (ja) * 1996-01-11 1997-07-29 Hitachi Ltd 連続鋳造装置
JPH08309492A (ja) * 1996-06-05 1996-11-26 Hitachi Ltd 薄板連続鋳造装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268910B1 (fr) * 1986-11-27 1991-09-04 Sms Schloemann-Siemag Aktiengesellschaft Lingotière pour la coulée continue de bande en acier
DE3907351A1 (de) * 1989-03-08 1990-09-13 Schloemann Siemag Ag Kokille mit eingiesstrichter
EP0552501B1 (fr) * 1992-01-20 1997-05-14 Sms Schloemann-Siemag Aktiengesellschaft Tingotière pour la coulée continue de bande en acier
WO1994007628A1 (fr) * 1992-10-06 1994-04-14 Davy Mckee (Sheffield) Limited Moule de coulee continue

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1099497A1 (fr) * 1999-11-10 2001-05-16 SMS Demag AG Lingotière pour la coulée continue de métal à région d'entrée en forme d'entonnoir

Also Published As

Publication number Publication date
CA2255279C (fr) 2007-02-13
US20020000305A1 (en) 2002-01-03
MY131906A (en) 2007-09-28
TW380065B (en) 2000-01-21
DE59808750D1 (de) 2003-07-24
CN1187144C (zh) 2005-02-02
KR100633030B1 (ko) 2006-12-22
JPH11244996A (ja) 1999-09-14
EP0920936A3 (fr) 2000-04-26
CA2255279A1 (fr) 1999-06-03
US6390176B1 (en) 2002-05-21
DE19753537A1 (de) 1999-06-10
EP0920936B1 (fr) 2003-06-18
ES2205367T3 (es) 2004-05-01
CN1223917A (zh) 1999-07-28
ZA9810910B (en) 1999-05-06
ATE243082T1 (de) 2003-07-15
KR19990062772A (ko) 1999-07-26

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