EP1818120A1 - Molten metal feed nozzle - Google Patents

Molten metal feed nozzle Download PDF

Info

Publication number
EP1818120A1
EP1818120A1 EP05795467A EP05795467A EP1818120A1 EP 1818120 A1 EP1818120 A1 EP 1818120A1 EP 05795467 A EP05795467 A EP 05795467A EP 05795467 A EP05795467 A EP 05795467A EP 1818120 A1 EP1818120 A1 EP 1818120A1
Authority
EP
European Patent Office
Prior art keywords
molten metal
rolls
extension
feed nozzle
nozzle
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
EP05795467A
Other languages
German (de)
French (fr)
Other versions
EP1818120B1 (en
EP1818120A4 (en
Inventor
Hiroyuki c/o Ishikawajima-Harima Heavy OTSUKA
Akihiko c/o Ishikawajima-Harima Heavy KIMATSUKA
Shiro c/o Ishikawajima-Harima Heavy OSADA
Hiroki c/o Ishikawajima-Harima Heavy YOSHIZAWA
Hisahiko Fukase
Rama Mahapatra
Peter Woodberry
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.)
IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Publication of EP1818120A1 publication Critical patent/EP1818120A1/en
Publication of EP1818120A4 publication Critical patent/EP1818120A4/en
Application granted granted Critical
Publication of EP1818120B1 publication Critical patent/EP1818120B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637Accessories therefor
    • B22D11/064Accessories therefor for supplying molten metal
    • B22D11/0642Nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10Supplying or treating molten metal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12Accessories for subsequent treating or working cast stock in situ
    • B22D11/128Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1287Rolls; Lubricating, cooling or heating rolls while in use
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50Pouring-nozzles

Definitions

  • the present invention relates to a molten metal feed nozzle incorporated in a twin roll caster.
  • Fig. 1 shows an example of a twin roll caster with a pair of chilled rolls 1 arranged horizontally and in parallel with each other and a pair of side weirs 2 associated with the chilled rolls 1.
  • the rolls 1 through which cooling water flows interiorly are adapted to increase or decrease a nip or gap G between the rolls depending upon thickness of a strip 3 to be produced.
  • Rotational directions and velocities of the rolls 1 are set such that respective outer peripheries of the rolls are moved from above toward the nip G at constant velocity.
  • One and the other of the side weirs 2 are urged to surface-contact one and the other ends of the rolls 1, respectively.
  • a molten metal feed nozzle made of refractory is positioned just above the nip G between the rolls.
  • the feed nozzle has an elongated nozzle trough 5 which in turn has a top opened for reception of molten metal 4 and longitudinal side walls formed at their lower ends with a plurality of openings 6 for passage from the trough 5 to the outer peripheries of the rolls 1, the openings being spaced apart from each other axially of the rolls 1.
  • a molten metal pool 7 is formed above the nip G between the rolls and in contact with the outer peripheries of the rolls 1.
  • the molten metal pool 7 is formed and the rolls 1 chilled by passage of the cooling water are rotated, the molten metal 4 is solidified on the outer peripheries of the rolls 1 and the strip 3 is delivered downwardly from the nip G between the rolls.
  • Molten metal feed nozzles incorporated in twin roll casters may be divided into those with ends of the nozzle which surface-contact the side weirs 2 (see, for example, Reference 1) and those with ends of the nozzle which are spaced apart from and in parallel with the side weirs 2 (see, for example, Reference 2).
  • Reference 1 JP 62-45456A
  • Reference 2 Reference 2
  • the molten metal feed nozzle remains unchanged in its longitudinal size.
  • leakage of the molten metal 4 becomes unsuppressed by merely increasing the force for urging the side weirs 2 to the rolls 1.
  • flow velocity distribution at free liquid surface of the molten metal 4 tends to be low at between two parallel surfaces facing to each other, i.e., a surface 9 of the side weir on the molten metal pool and an end wall surface 10 of the molten metal nozzle, in comparison with at between a longitudinal side wall surface 8 of the molten metal nozzle and the chilled roll 1.
  • an area A where the molten metal 4 tends to stagnate is formed especially from the end wall surface 10 to a point P0 which is an intersection of nip center line L with the surface 9 of the side weir.
  • the strip 3 When such unwanted solidification shell is pinched as foreign matter by the solidification shells generated on the outer peripheries of the chilled rolls 1 upon rotation of the rolls, the strip 3 may be locally thickened into defective shape and/or the nip G between the rolls may be enlarged depending upon part of the strip 3 where the foreign matter is pinched, resulting in break of the strip 3 due to reduction in cooling efficiency and heat recuperation from the molten metal 4.
  • the invention was made in view of the above and has its object to provide a molten metal feed nozzle which can avert break of a strip.
  • the invention is directed to a molten metal feed nozzle positioned above a nip between rolls of a twin roll caster and having ends spaced apart from side weirs, comprising extensions each contiguous with the nozzle end and extending toward the side weir such that a stagnation area disappears on a free liquid surface of molten metal.
  • the extensions eliminate stagnation areas of the free liquid surface of the molten metal; they prevent the molten metal from being lowered in temperature due to radiation heat transmission and suppress generation of unwanted solidification shells.
  • Figs. 3 to 6 show a first embodiment of a molten metal feed nozzle according to the invention in which parts identical with those in Figs. 1 and 2 are represented by the same reference numerals.
  • Each of nozzle ends is provided with an extension 11 which has a lower portion immersed in a molten metal pool 7 and extends toward a side weir 2 such that a stagnation area A (see Fig. 2) disappears on a free liquid surface of molten metal 4.
  • the extension 11 is in the form of a quadrangular pyramid lying sidelong and is convergent to point P1 extremely close to the side weir 2.
  • the stagnation area A on the free liquid surface of the molten metal 4 is displaced by the extension 11 contiguous with the nozzle end to suppress generation of an unwanted solidification shell.
  • no unwanted solidification shell is pinched as foreign matter by the solidification shells generated on the outer peripheries on the chilled rolls 1 for production of the strip 3, whereby break of the strip 3 due to enlargement of the nip G between the rolls can be averted.
  • the extension 11 is gradually reduced in volume toward the side weir 2, so that heat transmission from the molten metal 4 to the extension 11 is reduced.
  • the molten metal 4 adjacent to the side weir 2 can be effectively prevented from being lowered in temperature and no unwanted solidification shell for the side weir 2 is generated.
  • Figs. 7 and 8 shows a second embodiment of a molten metal feed nozzle according to the invention.
  • parts identical with those shown in Figs. 3 to 6 are represented by the same reference numerals.
  • Each of nozzle ends is provided with an extension 12 which has a lower portion immersed in a molten metal pool 7 and extends toward a side weir 2 such that a stagnation area A (see Fig. 2) disappears on a free liquid surface of molten metal 4.
  • the extension 12 is wedge shaped and is converged to a horizontal line segment between points P2 and P3 extremely close to the side weir 2.
  • the stagnation area A on the free liquid surface of the molten metal 4 is displaced by the extension 12 contiguous with the nozzle end to suppress generation of unwanted solidification shell.
  • no unwanted solidification shell is pinched as foreign matter by the solidification shells generated on the outer peripheries of the chilled roll 1 for production of the strip 3, whereby break of the strip 3 due to enlargement of the nip G between the rolls can be averted.
  • the extension 12 is gradually reduced in volume toward the side weir 2, so that heat transmission from the molten metal 4 (see Fig. 6) to the extension 12 is reduced so that the molten metal 4 adjacent to the side weir 2 can be effectively prevented from being lowered in temperature and no unwanted solidification shell for the side weir 2 is generated.
  • Figs. 9 and 10 show a third embodiment of a molten metal feed nozzle according to the invention.
  • parts identical with those in Figs. 3 to 7 are represented by the same reference numerals.
  • Each of nozzle ends is provided with an extension 13 which has a lower portion immersed in a molten metal pool 7 and extends to a side weir 2 such that a stagnation area A (see Fig. 2) disappears on a free liquid surface of molten metal 4.
  • the extension 13 is in the form of tapered quadratic prism lying sidelong and is converged to vertical face with corners P2, P3, P4 and P5 extremely close to the side weir 2.
  • Heat transmission from the molten metal 4 (see Fig. 6) to the extension 13 may be much in comparison with the first and second embodiments; however, the third embodiment is easier in machining upon fabrication of the molten metal feed nozzle.
  • a molten metal feed nozzle of the invention is not limited to the above embodiments and that various changes and modifications may be made without departing from the scope of the invention.
  • a molten metal feed nozzle of the invention is applicable to production of strips of steel or other various metals.

Landscapes

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

Abstract

A nozzle end is provided with an extension 11 which has a lower portion immersed in a molten metal pool and extends toward a side weir 2 such that a stagnation area disappears on a free liquid surface of molten metal.
The extension 11 is in the form of a quadrangular pyramid lying sidelong and is converged to a point P1 extremely close to the side weir 2.
According to this molten metal feed nozzle, a stagnation area on a free liquid surface of molten metal is displaced by the extension 11 contiguous with the nozzle end to suppress generation of an unwanted solidification shell. Thus, no unwanted solidification shell is pinched as foreign matter by solidification' shells generated on outer peripheries of chilled rolls 1 for production of a strip, and break of a strip derived from enlargement of nip between the rolls can be averted.

Description

    Technical Field
  • The present invention relates to a molten metal feed nozzle incorporated in a twin roll caster.
  • Background Art
  • Fig. 1 shows an example of a twin roll caster with a pair of chilled rolls 1 arranged horizontally and in parallel with each other and a pair of side weirs 2 associated with the chilled rolls 1.
  • The rolls 1 through which cooling water flows interiorly are adapted to increase or decrease a nip or gap G between the rolls depending upon thickness of a strip 3 to be produced.
  • Rotational directions and velocities of the rolls 1 are set such that respective outer peripheries of the rolls are moved from above toward the nip G at constant velocity.
  • One and the other of the side weirs 2 are urged to surface-contact one and the other ends of the rolls 1, respectively. In a space surrounded and defined by the side weirs 2 and rolls 1, a molten metal feed nozzle made of refractory is positioned just above the nip G between the rolls.
  • The feed nozzle has an elongated nozzle trough 5 which in turn has a top opened for reception of molten metal 4 and longitudinal side walls formed at their lower ends with a plurality of openings 6 for passage from the trough 5 to the outer peripheries of the rolls 1, the openings being spaced apart from each other axially of the rolls 1. By pouring the molten metal 4 into the nozzle trough 5, a molten metal pool 7 is formed above the nip G between the rolls and in contact with the outer peripheries of the rolls 1.
  • More specifically, when the molten metal pool 7 is formed and the rolls 1 chilled by passage of the cooling water are rotated, the molten metal 4 is solidified on the outer peripheries of the rolls 1 and the strip 3 is delivered downwardly from the nip G between the rolls.
  • Since wear on sliding portions of the side weirs relative to the rolls 1 progresses in direct proportion to accumulative operational time period, force for urging the side weirs 2 against the rolls 1 is gradually increased to prevent leakage of the molten metal 4 from between such members.
  • Molten metal feed nozzles incorporated in twin roll casters may be divided into those with ends of the nozzle which surface-contact the side weirs 2 (see, for example, Reference 1) and those with ends of the nozzle which are spaced apart from and in parallel with the side weirs 2 (see, for example, Reference 2).
    [Reference 1] JP 62-45456A
    [Reference 2] JP 6-114505A
  • Summary of the Invention Problems to be Solved by the Invention
  • However, in application of a structure in Reference 1, the molten metal feed nozzle remains unchanged in its longitudinal size. Thus, as the wear on the sliding portion of the side weir 2 progresses, leakage of the molten metal 4 becomes unsuppressed by merely increasing the force for urging the side weirs 2 to the rolls 1.
  • In application of a structure in Reference 2, as shown in Fig. 10, flow velocity distribution at free liquid surface of the molten metal 4 tends to be low at between two parallel surfaces facing to each other, i.e., a surface 9 of the side weir on the molten metal pool and an end wall surface 10 of the molten metal nozzle, in comparison with at between a longitudinal side wall surface 8 of the molten metal nozzle and the chilled roll 1. As a result, an area A where the molten metal 4 tends to stagnate is formed especially from the end wall surface 10 to a point P0 which is an intersection of nip center line L with the surface 9 of the side weir.
  • It occurs in the stagnation area A that the molten metal 4 is lowered in temperature due to radiation heat transmission, and a solidification shell is generated which is unwanted for the free liquid surface of the molten metal 4 and for the end wall surface 10 of the nozzle.
  • When such unwanted solidification shell is pinched as foreign matter by the solidification shells generated on the outer peripheries of the chilled rolls 1 upon rotation of the rolls, the strip 3 may be locally thickened into defective shape and/or the nip G between the rolls may be enlarged depending upon part of the strip 3 where the foreign matter is pinched, resulting in break of the strip 3 due to reduction in cooling efficiency and heat recuperation from the molten metal 4.
  • The invention was made in view of the above and has its object to provide a molten metal feed nozzle which can avert break of a strip.
  • Means or Measures for Solving the Problems
  • In order to attain the above object, the invention is directed to a molten metal feed nozzle positioned above a nip between rolls of a twin roll caster and having ends spaced apart from side weirs, comprising extensions each contiguous with the nozzle end and extending toward the side weir such that a stagnation area disappears on a free liquid surface of molten metal.
  • In the invention, the extensions eliminate stagnation areas of the free liquid surface of the molten metal; they prevent the molten metal from being lowered in temperature due to radiation heat transmission and suppress generation of unwanted solidification shells.
  • Effects of the Invention
  • According to a molten metal feed nozzle of the invention, the following excellent effects and advantages can be obtained.
  • (1) The extensions prevent the molten metal adjacent to the side weirs from being lowered in temperature and suppress generation of solidification shells on the free liquid surface of the molten metal, so that unwanted solidification shells are not pinched as foreign matter by the solidification shells generated on the outer peripheries of the chilled roll for production of the strip, and thus break of the strip derived from enlargement of the nip between the rolls can be averted.
  • (2) When the extensions are shaped to be converged toward the side weirs for gradual reduction in volume of the extensions, heat transmission from the molten metal to the extensions is reduced, so that the molten metal adjacent to the side weirs is effectively prevented from being lowered in temperature.
  • Brief Description of the Drawings
    • [Fig. 1] A schematic diagram showing an example of a twin roll caster.
    • [Fig. 2] A schematic diagram showing flow velocity distribution on a free surface of molten metal adjacent to a molten metal feed nozzle shown in Fig. 1.
    • [Fig. 3] A partial perspective view from below showing a first embodiment of a molten metal feed nozzle according to the invention.
    • [Fig. 4] A schematic diagram of the molten metal feed nozzle in Fig. 3 looking axially of the chilled rolls.
    • [Fig. 5] A schematic diagram of the molten metal feed nozzle in Fig. 3 looking tangentially of the chilled roll.
    • [Fig. 6] A schematic diagram showing flow velocity distribution on a free surface of molten metal adjacent to the molten metal feed nozzle of Fig. 3.
    • [Fig. 7] A partial perspective view from below showing a second embodiment of a molten metal feed nozzle according to the invention.
    • [Fig. 8] A schematic diagram of the molten metal feed nozzle in Fig. 7 looking axially of the chilled rolls.
    • [Fig. 9] A partial perspective view from below showing a third embodiment of a molten metal feed nozzle according to the invention.
    • [Fig. 10] A schematic diagram of the molten metal feed nozzle in Fig. 9 looking axially of the chilled rolls.
    Explanation of the Reference Numerals
    • 2 side weir
    • 7 molten metal pool
    • 11,12,13 extension
    • A area
    • G nip or gap
    • P1 point
    Best Mode for Carrying Out the Invention
  • Embodiments of the invention will be described in conjunction with the drawings.
  • Figs. 3 to 6 show a first embodiment of a molten metal feed nozzle according to the invention in which parts identical with those in Figs. 1 and 2 are represented by the same reference numerals.
  • Each of nozzle ends is provided with an extension 11 which has a lower portion immersed in a molten metal pool 7 and extends toward a side weir 2 such that a stagnation area A (see Fig. 2) disappears on a free liquid surface of molten metal 4.
  • The extension 11 is in the form of a quadrangular pyramid lying sidelong and is convergent to point P1 extremely close to the side weir 2.
  • In the twin roll caster with such molten metal feed nozzle incorporated, the stagnation area A on the free liquid surface of the molten metal 4 is displaced by the extension 11 contiguous with the nozzle end to suppress generation of an unwanted solidification shell. As a result, no unwanted solidification shell is pinched as foreign matter by the solidification shells generated on the outer peripheries on the chilled rolls 1 for production of the strip 3, whereby break of the strip 3 due to enlargement of the nip G between the rolls can be averted.
  • In addition, the extension 11 is gradually reduced in volume toward the side weir 2, so that heat transmission from the molten metal 4 to the extension 11 is reduced. As a result, the molten metal 4 adjacent to the side weir 2 can be effectively prevented from being lowered in temperature and no unwanted solidification shell for the side weir 2 is generated.
  • Figs. 7 and 8 shows a second embodiment of a molten metal feed nozzle according to the invention. In the figures, parts identical with those shown in Figs. 3 to 6 are represented by the same reference numerals.
  • Each of nozzle ends is provided with an extension 12 which has a lower portion immersed in a molten metal pool 7 and extends toward a side weir 2 such that a stagnation area A (see Fig. 2) disappears on a free liquid surface of molten metal 4.
  • The extension 12 is wedge shaped and is converged to a horizontal line segment between points P2 and P3 extremely close to the side weir 2.
  • In the twin roll caster with such molten metal feed nozzle incorporated, the stagnation area A on the free liquid surface of the molten metal 4 is displaced by the extension 12 contiguous with the nozzle end to suppress generation of unwanted solidification shell. As a result, no unwanted solidification shell is pinched as foreign matter by the solidification shells generated on the outer peripheries of the chilled roll 1 for production of the strip 3, whereby break of the strip 3 due to enlargement of the nip G between the rolls can be averted.
  • In addition, the extension 12 is gradually reduced in volume toward the side weir 2, so that heat transmission from the molten metal 4 (see Fig. 6) to the extension 12 is reduced so that the molten metal 4 adjacent to the side weir 2 can be effectively prevented from being lowered in temperature and no unwanted solidification shell for the side weir 2 is generated.
  • Figs. 9 and 10 show a third embodiment of a molten metal feed nozzle according to the invention. In the figures, parts identical with those in Figs. 3 to 7 are represented by the same reference numerals.
  • Each of nozzle ends is provided with an extension 13 which has a lower portion immersed in a molten metal pool 7 and extends to a side weir 2 such that a stagnation area A (see Fig. 2) disappears on a free liquid surface of molten metal 4.
  • The extension 13 is in the form of tapered quadratic prism lying sidelong and is converged to vertical face with corners P2, P3, P4 and P5 extremely close to the side weir 2.
  • In the twin roll caster with such molten metal feed nozzle incorporated, the stagnation area A of the free liquid surface of the molten metal 4 is displaced by the extension 13 contiguous with the nozzle end to suppress generation of unwanted solidification shell. As a result, no unwanted solidification shell is pinched as foreign matter by the solidification shells generated on the outer peripheries of the chilled roll 1 for production of the strip 3, whereby break of the strip 3 derived from enlargement of the nip G between the rolls can be averted.
  • Heat transmission from the molten metal 4 (see Fig. 6) to the extension 13 may be much in comparison with the first and second embodiments; however, the third embodiment is easier in machining upon fabrication of the molten metal feed nozzle.
  • It is to be understood that a molten metal feed nozzle of the invention is not limited to the above embodiments and that various changes and modifications may be made without departing from the scope of the invention.
  • Industrial Applicability
  • A molten metal feed nozzle of the invention is applicable to production of strips of steel or other various metals.

Claims (3)

  1. A molten metal feed nozzle positioned above a nip (G) between rolls (1) of a twin roll caster and having ends spaced apart from side weirs (2), comprising extensions (11;12;13) each contiguous with the nozzle end and extending toward the side weir (2) such that a stagnation area (A) disappears on a free liquid surface of molten metal (4).
  2. A molten metal feed nozzle as claimed in claim 1, wherein the extension (11;12;13) is converged toward the side weir (2).
  3. A molten metal feed nozzle as claimed in claim 1, wherein the extension (11) is converged to a point (P1) extremely close to the side weir (2).
EP05795467A 2004-10-27 2005-10-20 Twin roll caster with tapered nozzle Not-in-force EP1818120B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004311962A JP4720145B2 (en) 2004-10-27 2004-10-27 Molten metal supply nozzle
PCT/JP2005/019282 WO2006046459A1 (en) 2004-10-27 2005-10-20 Molten metal feed nozzle

Publications (3)

Publication Number Publication Date
EP1818120A1 true EP1818120A1 (en) 2007-08-15
EP1818120A4 EP1818120A4 (en) 2008-05-07
EP1818120B1 EP1818120B1 (en) 2011-04-20

Family

ID=36227699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05795467A Not-in-force EP1818120B1 (en) 2004-10-27 2005-10-20 Twin roll caster with tapered nozzle

Country Status (8)

Country Link
US (1) US20090126895A1 (en)
EP (1) EP1818120B1 (en)
JP (1) JP4720145B2 (en)
KR (1) KR100947756B1 (en)
CN (1) CN101048247B (en)
AU (1) AU2005298039B2 (en)
DE (1) DE602005027603D1 (en)
WO (1) WO2006046459A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809416A1 (en) * 1987-03-24 1988-10-13 Ishikawajima Harima Heavy Ind TWO-ROLLER CONTINUOUS CASTING MACHINE
US4883113A (en) * 1988-03-03 1989-11-28 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Pouring device for dual-roll type continuous casting machine
WO1999014005A1 (en) * 1997-09-17 1999-03-25 Ishikawajima-Harima Heavy Industries Company Limited Immersion nozzle for casting steel strip

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6245456A (en) 1985-08-23 1987-02-27 Ishikawajima Harima Heavy Ind Co Ltd Twin roll type continuous casting machine
JPH07102426B2 (en) * 1988-06-20 1995-11-08 株式会社日立製作所 Twin roll type continuous casting machine
JP3063808B2 (en) 1992-10-06 2000-07-12 新日本製鐵株式会社 Twin roll continuous casting machine
JP2781734B2 (en) * 1994-12-14 1998-07-30 新日本製鐵株式会社 Nozzle for continuous casting of wide thin slab
JPH1058095A (en) * 1996-08-14 1998-03-03 Nippon Steel Corp Partition plate in thin cast slab continuous casting apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809416A1 (en) * 1987-03-24 1988-10-13 Ishikawajima Harima Heavy Ind TWO-ROLLER CONTINUOUS CASTING MACHINE
US4883113A (en) * 1988-03-03 1989-11-28 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Pouring device for dual-roll type continuous casting machine
WO1999014005A1 (en) * 1997-09-17 1999-03-25 Ishikawajima-Harima Heavy Industries Company Limited Immersion nozzle for casting steel strip

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2006046459A1 *

Also Published As

Publication number Publication date
EP1818120B1 (en) 2011-04-20
WO2006046459A1 (en) 2006-05-04
KR100947756B1 (en) 2010-03-18
CN101048247A (en) 2007-10-03
JP4720145B2 (en) 2011-07-13
JP2006122933A (en) 2006-05-18
AU2005298039A1 (en) 2006-05-04
US20090126895A1 (en) 2009-05-21
EP1818120A4 (en) 2008-05-07
DE602005027603D1 (en) 2011-06-01
KR20070068440A (en) 2007-06-29
AU2005298039B2 (en) 2010-03-04
CN101048247B (en) 2011-02-09

Similar Documents

Publication Publication Date Title
KR102080604B1 (en) Thin slab nozzle for distributing high mass flow rates
JP2007136485A (en) Roll for casting
EP1818120A1 (en) Molten metal feed nozzle
JP6085571B2 (en) Continuous casting mold
JP2007203337A (en) Twin-roll casting machine
JP2003311377A (en) Tube-type mold for continuous casting
AU2006346617A1 (en) Twin roll casting machine
CN210254221U (en) Immersion type water gap of H-shaped anti-leakage steel
CN102470426A (en) Casting mold
JP3246404B2 (en) Continuous casting mold
JP3320040B2 (en) Continuous casting mold
JP5027625B2 (en) Immersion nozzle for continuous casting
JP5103939B2 (en) Casting roll
JP6817498B1 (en) Mold for continuous casting
US8113267B2 (en) Twin-roll casting machine
CN103909256A (en) Porous submersed nozzle for pouring blooms
JPH02205233A (en) Method for preventing leakage of molten steel in twin roll type continuous casting equipment and short weir
JP2008126238A (en) Continuous casting device
KR20200076776A (en) Mold Device for Continuous Casting
KR20090024185A (en) Twin roll casting machine
JP2017144470A (en) Casting apparatus, casting method, and metal plate surface smoothing tool used therefor
JPH0411289B2 (en)
KR20000016735A (en) Submergence nozzle for continuously casting thin slab
JP2001286993A (en) Continuous casting method
JPH02200357A (en) Mold for continuous casting of steel and lubricating method thereof

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070511

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: IHI CORPORATION

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

A4 Supplementary search report drawn up and despatched

Effective date: 20080404

17Q First examination report despatched

Effective date: 20090717

RTI1 Title (correction)

Free format text: TWIN ROLL CASTER WITH TAPERED NOZZLE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602005027603

Country of ref document: DE

Date of ref document: 20110601

Kind code of ref document: P

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602005027603

Country of ref document: DE

Effective date: 20110601

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20120123

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602005027603

Country of ref document: DE

Effective date: 20120123

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20160919

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20161019

Year of fee payment: 12

Ref country code: DE

Payment date: 20161011

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20161024

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602005027603

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20171020

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20180629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171020

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171020