WO1993022087A1 - Extraction de vapeur dans le laminage en coulee continue - Google Patents

Extraction de vapeur dans le laminage en coulee continue Download PDF

Info

Publication number
WO1993022087A1
WO1993022087A1 PCT/AU1993/000160 AU9300160W WO9322087A1 WO 1993022087 A1 WO1993022087 A1 WO 1993022087A1 AU 9300160 W AU9300160 W AU 9300160W WO 9322087 A1 WO9322087 A1 WO 9322087A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction
pool
casting
metal
purge gas
Prior art date
Application number
PCT/AU1993/000160
Other languages
English (en)
Inventor
Hisahiko Fukase
Walter Blejde
Original Assignee
Ishikawajima-Harmia Heavy Industries Company Limited
John Lysaght (Australia) Limited
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 Ishikawajima-Harmia Heavy Industries Company Limited, John Lysaght (Australia) Limited filed Critical Ishikawajima-Harmia Heavy Industries Company Limited
Priority to AU38800/93A priority Critical patent/AU3880093A/en
Priority to JP51871293A priority patent/JP3172187B2/ja
Publication of WO1993022087A1 publication Critical patent/WO1993022087A1/fr

Links

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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/064—Accessories therefor for supplying molten metal
    • 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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0697—Accessories therefor for casting in a protected atmosphere
    • 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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/113—Treating the molten metal by vacuum treating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
    • B22D43/005—Removing slag from a molten metal surface
    • B22D43/008—Removing slag from a molten metal surface by suction

Definitions

  • This invention relates to the casting of metal strip. It has particular but not exclusive application to the casting ferrous metal strip.
  • Hot metal is introduced between a pair of contra-rotated horizontal casting rolls which are cooled so that metal shells solidify on the moving roll surfaces and are brought together at the nip between them to produce a solidified strip product at the outlet from the roll nip.
  • the hot metal may be introduced into the nip between the rolls via a tundish and a metal delivery nozzle located beneath the tundish so as to receive a flow of metal from the tundish and to direct it into the nip between the rolls.
  • twin roll casting has been applied with some success to non-ferrous metals which solidify rapidly on cooling, there have been problems in applying the technique to the casting of ferrous metals. Some of these problems have been addressed by the inventions disclosed in our previous Australian Patent Applications Nos 72897/91; 72896/91; 80366/91 and 86968/91. It has also been found that during casting, metal fume condenses and oxides form on the casting roll surfaces and that these influence the creation of "crocodile skin" on the strip surface, that is to say, valley cracks or microcracks that appear more like tears than cracks in the order of 1 mm depth. This condensed metal fume and oxides on the roll surfaces also promote uneven shell growth and non-uniform nucleation densities.
  • Mn, MnO, Si0 2 , Cr and Mn silicates have been found to be deposited on the casting roll surfaces. Some of the oxides appear to have been sintered or actually melted to form a compact layer on the roll surfaces. It is believed that these deposits originate from the atmosphere above the roll surfaces due to vaporisation of elements from the melt pool and subsequent condensation and oxidation at the roll surfaces. The present invention aims to reduce these phenomena so as to produce a higher quality strip product.
  • a method of casting metal strip of the kind in which molten metal is introduced between a pair of parallel casting rolls via a metal delivery nozzle disposed above the nip between the rolls to form a pool of molten metal above the nip between the rolls and the rolls are contra-rotated to produce a solidified strip product passing downwardly from the nip between them, wherein suction is applied to the surface of said pool of molten metal to extract vapours emanating from that surface and transport them away from contact with the casting roll surfaces.
  • an enclosure is formed to enclose a space above the pool surface to which said suction is applied and purge gas is introduced into the enclosed space.
  • the purge gas is an inert gas, for example argon.
  • At least some of the purge gas is introduced into said space in two streams directed downwardly over the surfaces of the casting rolls toward the metal pool surface.
  • the invention also provides apparatus for casting metal strip, comprising a pair of parallel casting rolls forming a nip between them, a metal delivery nozzle for delivery of molten metal into the nip between the casting rolls, drive means to drive the casting rolls in counter- rotational directions to produce a solidified strip of metal passing downwardly from the nip between them, and suction means operable in use of the apparatus to apply suction to the surface of the molten metal pool so as to extract vapours emanating from the surface and transport them away from contact with the casting roll surfaces.
  • the apparatus further comprises enclosure means effective to enclose a space above the pool surface to which suction is to be applied by the suction means.
  • the apparatus further comprises purge gas delivery means to deliver purge gas into said space.
  • the space enclosed by the enclosure means may contain both the delivery means and the suction means.
  • the purge gas delivery means comprises a pair of gas delivery nozzles arranged to deliver two streams of purge gas downwardly over the surfaces of the casting rolls toward the surface of the molten metal pool.
  • the gas delivery nozzles may be disposed within said enclosed spaced.
  • Figure 1 illustrates a continuous strip casting incorporating apparatus constructed and operating in accordance with the present invention
  • Figure 2 is a vertical cross-section through important components of the caster illustrated in Figure 1;
  • Figure 3 is a further vertical cross-section through important components of the caster taken transverse to the section of Figure 2;
  • Figure 4 is a view generally on the line 4-4 in Figure 2;
  • Figure 5 is a cross-section on the line 5-5 in Figure 4f
  • Figure 6 is a cross-section on the line 6-6 in Figure 4; and Figure 7 is a cross-section on the line 7-7 in
  • the illustrated caster comprises a main machine frame 11 which stands up from the factory floor 12.
  • Frame 11 supports a casting roll carriage 13 which is horizontally movable between an assembly station 14 and a casting station 15.
  • Carriage 13 carries a pair of parallel casting rolls 16 to which molten metal is supplied during a casting operation from a ladle 17 via a tundish 18 and delivery nozzle 19.
  • Casting rolls 16 are water cooled so that shells solidify on the moving roll surfaces and are brought together at the nip between them to produce a solidified strip product 20 at the roll outlet.
  • This product is fed to a standard coiler 21 and may subsequently be transferred to a second coiler 22.
  • a receptacle 23 is mounted on the machine frame adjacent the casting station and molten metal can be diverted into this receptacle via an overflow spout 24 on the tundish or by withdrawal of an emergency plug 25 at one side of the tundish if there is a severe malformation of product or other severe malfunction during a casting operation.
  • Roll carriage 13 comprises a carriage frame 31 mounted by wheels 32 on rails 33 extending along part of the main machine frame 11 whereby roll carriage 13 as a whole is mounted for movement along the rails 33.
  • Carriage frame 31 carries a pair of roll cradles in which the rolls 16 are rotatably mounted.
  • Carriage 13 is movable along the rails 33 by actuation of a double acting hydraulic piston and cylinder unit 39, connected between a drive bracket 40 on the roll carriage and the main machine frame so as to be actuable to move the roll carriage between the assembly station 14 and casting station 15 and visa versa.
  • Casting rolls 16 are contra-rotated through drive shafts 41 from an electric motor and transmission.
  • Rolls 16 have copper peripheral walls formed with a series of longitudinally extending and circumferentially spaced water cooling passages supplied with cooling water through the roll ends from water supply ducts in the roll drive shafts 41 which are connected to water supply hoses 42 through rotary glands 43.
  • the rolls may typically be about 500 mm diameter and up to 1300 mm long in order to produce 1300 mm wide strip product.
  • Ladle 17 is of entirely conventional construction and is supported via a yoke 45 on an overhead crane whence it can be brought into position from a hot metal receiving station.
  • the ladle is fitted with a stopper rod 46 actuable by a servo cylinder to allow molten metal to flow from the ladle through an outlet nozzle 47 and refractory shroud 48 into tundish 18.
  • Tundish 18 is also of conventional construction. It is formed as a wide dish made of a refractory material such as magnesium oxide (MgO) .
  • MgO magnesium oxide
  • One side of the tundish receives molten metal from the ladle and is provided with the aforesaid overflow 24 and emergency plug 25.
  • the other side of the tundish is provided with a series of longitudinally spaced metal outlet openings 52.
  • the lower part of the tundish carries mounting brackets 53 for mounting the tundish onto the roll carriage frame 31 and provided with apertures to receive indexing pegs 54 on the carriage frame so as accurately to locate the tundish.
  • Delivery nozzle 19 is formed as an elongate body made of a refractory material such as alumina graphite. Its lower part is tapered so as to converge inwardly and downwardly so that it can project into the nip between casting rolls 16.
  • a mounting bracket 60 is provided to support the nozzle from the underside of tundish 18 and the upper part of the nozzle is formed with outwardly projecting side flanges 55 which locate on the mounting bracket.
  • Delivery nozzle 19 has an internal vertically extending passage 62 to receive liquid flowing downwardly through the openings 52 of the tundish. Passage 62 converges toward its lower end part which serves as an outlet flow passage for flow of metal into the nip between the rolls 16. More specifically, the lower part of passage 62 terminates at an elongate outlet slot__63 at the bottom end of the delivery nozzle which slot extends longitudinally of the nip between the casting rolls.
  • molten metal delivered from the delivery nozzle forms a pool 71 above the nip between the rolls, this pool being confined at the ends of the rolls by a pair of side closure plates 56 which are held against stepped ends 57 of the rolls by actuation of a pair of hydraulic cylinder units 83 fitted with closure plate holders 84.
  • the upper surface 72 of pool 71 generally referred to as the "meniscus level" rises above the lower end of the delivery nozzle. Accordingly, the lower end of the delivery nozzle is immersed within this pool and the nozzle outlet passage extends below the surface of the pool or meniscus level.
  • the flow of metal is also such as to produce a head of molten metal within the nozzle outlet passage to a height above the meniscus level 72.
  • a space above the pool of molten metal between the casting rolls is enclosed by an enclosure means denoted generally as 73 and comprising a rectangular perimeter frame 74 bolted to the roll carriage by bolts 75.
  • Frame 74 supports the nozzle mounting bracket 60 and that bracket may indeed be formed integrally with the frame.
  • Frame 74 is formed with an upwardly facing groove 76 to receive a rectangular sealing strip or gasket 77 which seals against the underside of the tundish structure when the tundish is lowered onto the roll carriage.
  • Frame 74 is further formed with a pair of side enclosure walls 78 provided at their lower edges with gas tight sliding seals 79 which slide on upper surfaces of the casting rolls 16.
  • perimeter frame 74 extend across the top of the side closure plates 56 and are fitted with vertically movable sealing strips 80 to seal against the upper edges of the side closure plates 56 and two fixed outer sealing strips 81 which seal against the rolls at the ends of the frame thereby to complete an enclosure of a space 83 disposed between the tundish and the molten metal pool.
  • Space 83 encloses the metal delivery nozzle 19 and the downwardly moving parts of the roll surfaces in the vicinity of the molten metal pool.
  • Movable sealing strips 80 can be raised and lowered in frame 74 by operation of four gas cylinder actuators 90 disposed in housings within the end walls of the frame. Those strips are raised to retracted positions until the end plates 56 have been brought against the rolls but are extended downwardly against the end plates immediately prior to casting.
  • the apparatus is further provided with suction means denoted generally as 84 and comprising a pair of suction hoods 85 disposed within the enclosed space 83 one to each side of the delivery nozzle 19 and connected to a respective pair of suction manifolds 86.
  • Hoods 85 project downwardly from manifolds 86 to present suction inlets across the molten metal pool surface to each side of the metal delivery nozzle whereby in operation of the apparatus fumes or vapours emanating from the metal pool may be extracted from the enclosed space 83 and away from contact with the roll surfaces in the vicinity of the meniscus.
  • purge gas delivery means comprising a pair of purge gas delivery nozzles 87 disposed within the enclosed space 83 outside _ the suction hoods 85 and connected to purge gas delivery manifolds 88.
  • the delivery nozzles 87 have slot outlets extending throughout the width of the nip and located so as to direct to blanket streams of purge gas downwardly over the casting roll surfaces where they enter the molten metal pool at the meniscus.
  • these nozzles direct blankets of an inert gas, preferably argon, as shielding blankets to prevent oxidation of the roll surfaces and oxidation across the pool surface.
  • the inert gas flows smoothly across the roll surfaces and across the pool surface then upwardly into the suction hoods 85 so that vapours emanating from the pool surface are continuously borne away and extracted from the space 83 without coming into contact with the roll surfaces. It is thus possible to avoid the build up of a manganese rich atmosphere above the pool and environs.
  • the purge gas may be delivered in sufficient volume to maintain the pressure inside the enclosed space 83 above atmospheric pressure to avoid suction of air from outside and to make possible pressure adjustment of the atmosphere above the pool.
  • the width of the slot outlet from the nozzle may be in the range 1.5 mm to 7 mm, for example around 3 mm.
  • the head of metal formed in the nozzle outlet passage may typically be about 20 mm above the meniscus level 72.
  • the head end of strip 20 produced on initial pouring is guided by actuation of an apron table 96 to the jaws of coiler 21.
  • Apron table 96 hangs from pivot mountings 97 on the main frame and can be swung toward the coiler by actuation of an hydraulic cylinder unit 98.
  • Table 96 may operate against an upper strip guide flap 99 actuated by a piston and cylinder unit 101 and the strip may be confined between a pair of vertical side rollers 102.
  • the coiler is rotated to coil the product and the apron table is allowed to swing back to its inoperative position where it simply hangs from the machine frame clear of the product which is taken directly onto coiler 21.
  • the resulting strip product may be subsequently transferred to coiler 22 to produce a final coil for transport away from the caster.

Landscapes

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

Abstract

De manière à empêcher la déposition de métal et d'oxydes métalliques provenant de l'atmosphère au-dessus du bain de coulée de métal fondu (71) dans l'étranglement entre les cylindres (16) d'un laminoir à deux cylindres, une aspiration est effectuée à la surface du bain (71) par une paire de soufflets (85) chacun positionné de chaque côté de la buse d'alimentation (19) en métal. Les soufflets d'aspiration (85) sont positionnés dans une enceinte (73) qui délimite un espace au-dessus du bain (71). Un gaz de purge, par exemple l'argon, est introduit dans l'espace fermé par des buses (87) en deux courants qui s'écoulent vers le bas au-dessus des sufaces des cylindres de laminoir et en direction de la surface du bain de métal fondu (71).
PCT/AU1993/000160 1992-04-24 1993-04-13 Extraction de vapeur dans le laminage en coulee continue WO1993022087A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU38800/93A AU3880093A (en) 1992-04-24 1993-04-13 Vapor extraction in continuous strip casting
JP51871293A JP3172187B2 (ja) 1992-04-24 1993-04-13 連続ストリップ鋳造方法及び装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPL2092 1992-04-24
AUPL209292 1992-04-24

Publications (1)

Publication Number Publication Date
WO1993022087A1 true WO1993022087A1 (fr) 1993-11-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1993/000160 WO1993022087A1 (fr) 1992-04-24 1993-04-13 Extraction de vapeur dans le laminage en coulee continue

Country Status (2)

Country Link
JP (1) JP3172187B2 (fr)
WO (1) WO1993022087A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2727338A1 (fr) * 1994-11-30 1996-05-31 Usinor Sacilor Dispositif de coulee continue entre cylindres a capotage d'inertage
GB2305144A (en) * 1995-09-14 1997-04-02 Ishikawajima Harima Heavy Ind Strip casting using nozzle with side openings
WO1999048635A1 (fr) * 1998-03-25 1999-09-30 Voest-Alpine Industrieanlagenbau Gmbh Procede de coulee continue d'une bande mince et dispositif correspondant
AU744243B2 (en) * 1997-02-14 2002-02-21 Acciai Speciali Terni S.P.A. How to avoid contact between oxygen and molten metal
KR100419627B1 (ko) * 1999-12-10 2004-02-25 주식회사 포스코 쌍롤형 박판주조기의 흄 배출장치
EP1455974A1 (fr) * 2001-12-21 2004-09-15 Posco Appareil pour empecher la contamination d'un rouleau enducteur et le gonflement d'une bande dans une machine de coulee a double rouleau enducteur
US6868895B2 (en) * 2001-04-16 2005-03-22 Nippon Steel Corporation Continuous casting method manufacturing thin cast strips and continuous casting machine
KR100489238B1 (ko) * 2000-08-25 2005-05-17 주식회사 포스코 쌍롤식 박판주조기를 이용한 박판의 제조방법
KR100584752B1 (ko) * 2001-12-22 2006-05-30 주식회사 포스코 쌍롤식 박판주조기의 휘발성 증기가스의 포집장치
US7323135B2 (en) * 2001-12-22 2008-01-29 Posco Apparatus for controlling gas layer thickness on the surface of casting rolls in a twin roll strip caster
CN103182490A (zh) * 2011-12-30 2013-07-03 宝山钢铁股份有限公司 一种双辊薄带连铸连续浇铸的方法及控制系统
US8893768B2 (en) 2011-11-17 2014-11-25 Nucor Corporation Method of continuous casting thin steel strip
WO2018119547A1 (fr) * 2016-12-26 2018-07-05 普锐特冶金技术日本有限公司 Dispositif de support de distributeur d'écoulement et appareil de coulée continue de type à double rouleau utilisant ledit dispositif

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Publication number Priority date Publication date Assignee Title
JPS61289951A (ja) * 1985-06-18 1986-12-19 Mitsubishi Heavy Ind Ltd 薄板連続鋳造装置
JPS6277151A (ja) * 1985-09-30 1987-04-09 Nippon Steel Corp 双ロール型連続鋳造装置
JPS62130749A (ja) * 1985-12-04 1987-06-13 Kawasaki Steel Corp 連続鋳造装置
JPH01317661A (ja) * 1988-06-20 1989-12-22 Nippon Steel Corp 金属薄板の連続鋳造方法及び装置
JPH02155539A (ja) * 1988-12-06 1990-06-14 Nippon Steel Corp 薄肉鋳片の連続鋳造方法
US5103895A (en) * 1989-07-20 1992-04-14 Nippon Steel Corporation Method and apparatus of continuously casting a metal sheet

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61289951A (ja) * 1985-06-18 1986-12-19 Mitsubishi Heavy Ind Ltd 薄板連続鋳造装置
JPS6277151A (ja) * 1985-09-30 1987-04-09 Nippon Steel Corp 双ロール型連続鋳造装置
JPS62130749A (ja) * 1985-12-04 1987-06-13 Kawasaki Steel Corp 連続鋳造装置
JPH01317661A (ja) * 1988-06-20 1989-12-22 Nippon Steel Corp 金属薄板の連続鋳造方法及び装置
JPH02155539A (ja) * 1988-12-06 1990-06-14 Nippon Steel Corp 薄肉鋳片の連続鋳造方法
US5103895A (en) * 1989-07-20 1992-04-14 Nippon Steel Corporation Method and apparatus of continuously casting a metal sheet

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, M-1019, page 3; & JP,A,2 155 539 (NIPPON STEEL CORP), 14 June 1990. *
PATENT ABSTRACTS OF JAPAN, M-590, page 161; & JP,A,61 289 951 (MITSUBISHI HEAVY IND LTD), 19 December 1986. *
PATENT ABSTRACTS OF JAPAN, M-623, page 1; & JP,A,62 077 151 (NIPPON STEEL CORP), 9 April 1987. *
PATENT ABSTRACTS OF JAPAN, M-642, page 159; & JP,A,62 130 749 (KAWASAKI STEEL CORP), 13 June 1987. *
PATENT ABSTRACTS OF JAPAN, M-945, page 158; & JP,A,1 317 661 (NIPPON STEEL CORP), 22 December 1989. *

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0714716A1 (fr) * 1994-11-30 1996-06-05 USINOR SACILOR Société Anonyme Dispositif de coulée continue entre cylindres a capotage d'inertage
AU686031B2 (en) * 1994-11-30 1998-01-29 Thyssen Stahl Aktiengesellschaft Twin-roll continuous casting device having an inerting shroud
FR2727338A1 (fr) * 1994-11-30 1996-05-31 Usinor Sacilor Dispositif de coulee continue entre cylindres a capotage d'inertage
CN1051034C (zh) * 1994-11-30 2000-04-05 尤辛诺-沙西罗有限公司 具有惰性保护罩的双辊连续铸造装置
GB2305144A (en) * 1995-09-14 1997-04-02 Ishikawajima Harima Heavy Ind Strip casting using nozzle with side openings
GB2305144B (en) * 1995-09-14 1999-09-01 Ishikawajima Harima Heavy Ind Strip casting
US6415849B1 (en) 1997-02-14 2002-07-09 Voest-Alpine Industrieanlagenbau Gmbh How to avoid contact between oxygen and molten metal
AU744243B2 (en) * 1997-02-14 2002-02-21 Acciai Speciali Terni S.P.A. How to avoid contact between oxygen and molten metal
US6575225B1 (en) 1998-03-25 2003-06-10 Voest-Alpine Industrieanlagenbau Gmbh Method for the continuous casting of a thin strip and device for carrying out said method
WO1999048635A1 (fr) * 1998-03-25 1999-09-30 Voest-Alpine Industrieanlagenbau Gmbh Procede de coulee continue d'une bande mince et dispositif correspondant
CN1092550C (zh) * 1998-03-25 2002-10-16 沃斯特－阿尔派因工业设备制造有限公司 连铸薄带的方法及实施该方法的装置
KR100419627B1 (ko) * 1999-12-10 2004-02-25 주식회사 포스코 쌍롤형 박판주조기의 흄 배출장치
KR100489238B1 (ko) * 2000-08-25 2005-05-17 주식회사 포스코 쌍롤식 박판주조기를 이용한 박판의 제조방법
US6868895B2 (en) * 2001-04-16 2005-03-22 Nippon Steel Corporation Continuous casting method manufacturing thin cast strips and continuous casting machine
US7021364B2 (en) * 2001-12-21 2006-04-04 Posco Apparatus for preventing the contamination of casting rolls and bulging of strip in a twin roll strip caster
EP1455974A1 (fr) * 2001-12-21 2004-09-15 Posco Appareil pour empecher la contamination d'un rouleau enducteur et le gonflement d'une bande dans une machine de coulee a double rouleau enducteur
EP1455974B1 (fr) * 2001-12-21 2015-09-23 Posco Appareil pour empecher la contamination d'un rouleau enducteur et le gonflement d'une bande dans une machine de coulee a double rouleau enducteur
KR100584752B1 (ko) * 2001-12-22 2006-05-30 주식회사 포스코 쌍롤식 박판주조기의 휘발성 증기가스의 포집장치
US7323135B2 (en) * 2001-12-22 2008-01-29 Posco Apparatus for controlling gas layer thickness on the surface of casting rolls in a twin roll strip caster
US8893768B2 (en) 2011-11-17 2014-11-25 Nucor Corporation Method of continuous casting thin steel strip
CN103182490A (zh) * 2011-12-30 2013-07-03 宝山钢铁股份有限公司 一种双辊薄带连铸连续浇铸的方法及控制系统
CN103182490B (zh) * 2011-12-30 2015-07-22 宝山钢铁股份有限公司 一种双辊薄带连铸连续浇铸的方法及控制系统
WO2018119547A1 (fr) * 2016-12-26 2018-07-05 普锐特冶金技术日本有限公司 Dispositif de support de distributeur d'écoulement et appareil de coulée continue de type à double rouleau utilisant ledit dispositif

Also Published As

Publication number Publication date
JP3172187B2 (ja) 2001-06-04
JPH06508562A (ja) 1994-09-29

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