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EP0679114B2 - Coulee d'une bande d'acier inoxydable sur une surface a rugosite predeterminee - Google Patents
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EP0679114B2 - Coulee d'une bande d'acier inoxydable sur une surface a rugosite predeterminee - Google Patents

Coulee d'une bande d'acier inoxydable sur une surface a rugosite predeterminee Download PDF

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Publication number
EP0679114B2
EP0679114B2 EP95900015A EP95900015A EP0679114B2 EP 0679114 B2 EP0679114 B2 EP 0679114B2 EP 95900015 A EP95900015 A EP 95900015A EP 95900015 A EP95900015 A EP 95900015A EP 0679114 B2 EP0679114 B2 EP 0679114B2
Authority
EP
European Patent Office
Prior art keywords
casting
microns
range
rolls
nickel
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.)
Expired - Lifetime
Application number
EP95900015A
Other languages
German (de)
English (en)
Other versions
EP0679114B1 (fr
EP0679114A1 (fr
EP0679114A4 (fr
Inventor
Rama Ballav Mahapatra
John Freeman
Lazar Strezov
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.)
Castrip LLC
Original Assignee
Castrip LLC
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3777367&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0679114(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Castrip LLC filed Critical Castrip LLC
Publication of EP0679114A1 publication Critical patent/EP0679114A1/fr
Publication of EP0679114A4 publication Critical patent/EP0679114A4/fr
Application granted granted Critical
Publication of EP0679114B1 publication Critical patent/EP0679114B1/fr
Publication of EP0679114B2 publication Critical patent/EP0679114B2/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
    • B22D11/06—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
    • B22D11/0665—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating
    • B22D11/0668—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating for dressing, coating or lubricating
    • 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
    • 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
    • B22D11/0648—Casting surfaces
    • B22D11/0651—Casting wheels

Definitions

  • This invention relates to the continuously casting of austenitic stainless steel strip. It has particular but not exclusive application to continuous casting of stainless steel strip in a twin roll caster.
  • molten 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 delivered downwardly from the nip between the rolls.
  • the term "nip" is used herein to refer to the general region at which the rolls are closest together.
  • the molten metal may be poured from a ladle into a smaller vessel from which it flows through a metal delivery nozzle located above the nip so as to direct it into the nip between the rolls, so forming a casting pool of molten metal supported on the casting surfaces of the rolls immediately above the nip. This casting pool may be confined between side plates or dams held in sliding engagement with the ends of the rolls.
  • Twin roll casting has been applied with some success to non-ferrous metals which solidify rapidly on cooling, for example aluminium.
  • Our Australian Patent No 631728 discloses a method and apparatus which enables continuous casting of ferrous strip within 0.5 mm to 5 mm and apparatus of this type has been developed to the stage where it is possible to consistently produce good quality mild steel strip.
  • there have been particular problems in casting austenitic stainless steel strip because of the marked tendency for such steel to suffer from cracking and repetitive surface depressions appearing as a surface defect generally known as "crocodile skin".
  • the Arithmetic Mean Roughness Value which is generally indicated by the symbol R a .
  • This value is defined as the arithmetical average value of all absolute distances of the roughness profile from the centre line of the profile within the measuring length l m .
  • the centre line of the profile is the line about which roughness is measured and is a line parallel to the general direction of the profile within the limits of the roughness-width cut-off such that sums of the areas contained between it and those parts of the profile which lie on either side of it are equal.
  • the Arithmetic Mean Roughness Value may be defined as
  • the surface of this texture may be produced by the machining of regular ridges in the surface.
  • the chromium to nickel ratio is no greater than 1.55.
  • the casting surfaces of the rolls may have a texture of regular circumferential grooves with a texture depth in the range 10 microns to 60 microns and a groove pitch in the range 100 microns to 200 microns.
  • the roll may have a texture of regularly spaced projections, which may take the form of pyramids or cones with pitch spacing in the range 100 to 200 microns and depth in the range 10 to 60 microns.
  • the carbon, chromium and nickel contents of the steel be in the following ranges: Carbon - 0.04 - 0.06 % by weight Chromium - 17.5 - 19.5 % by weight Nickel - 8.0 - 10.0 % by weight.
  • 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 34 in which the rolls 16 are rotatably mounted.
  • Roll cradles 34 are mounted on the carriage frame 31 by interengaging complementary slide members 35, 36 to allow the cradles to be moved on the carriage under the influence of hydraulic cylinder units 37, 38 to adjust the nip between the casting rolls 16.
  • the carriage is movable as a whole 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 vice versa.
  • Casting rolls 16 are contra rotated through drive shafts 41 from an electric motor and transmission mounted on carriage frame 31.
  • 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). 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 to accurately locate the tundish.
  • MgO magnesium oxide
  • 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. It is provided with a mounting bracket 60 whereby to support it on the roll carriage frame and its upper part is formed with outwardly projecting side flanges 55 which locate on the mounting bracket.
  • a refractory material such as alumina graphite.
  • Nozzle 19 may have a series of horizontally spaced generally vertically extending flow passages to produce a suitably low velocity discharge of metal throughout the width of the rolls and to deliver the molten metal into the nip between the rolls without direct impingement on the roll surfaces at which initial solidification occurs.
  • the nozzle may have a single continuous slot outlet to deliver a low velocity curtain of molten metal directly into the nip between the rolls and/or it may be immersed in the molten metal pool.
  • the pool is 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 when the roll carriage is at the casting station.
  • Side closure plates 56 are made of a strong refractory material, for example boron nitride, and have scalloped side edges 81 to match the curvature of the stepped ends 57 of the rolls.
  • the side plates can be mounted in plate holders 82 which are movable at the casting station by actuation of a pair of hydraulic cylinder units 83 to bring the side plates into engagement with the stepped ends of the casting rolls to form end closures for the molten pool of metal formed on the casting rolls during a casting operation.
  • the ladle stopper rod 46 is actuated to allow molten metal to pour from the ladle to the tundish through the metal delivery nozzle whence it flows to the casting rolls.
  • the clean head end of the strip product 20 is guided by actuation of an apron table 96 to the jaws of the 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 after the clean head end has been formed.
  • Table 96 may operate against an upper strip guide flap 99 actuated by a piston and a cylinder unit 101 and the strip product 20 may be confined between a pair of vertical side rollers 102.
  • the coiler is rotated to coil the strip product 20 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 the coiler 21.
  • the resulting strip product 20 may be subsequently transferred to coiler 22 to produce a final coil for transport away from the caster.
  • Tests were conducted on three copper substrates with different surface characteristics; a smooth and a textured copper surface and a Cr coated (100 ⁇ m in thickness), ground surface. Texture was imparted to the copper block by machining longitudinal grooves and ridges with geometry shown schematically in Figure 6. Each of these blocks was instrumented with thermocouples to characterise the heat transfer rates prevailing during solidification. In order to maintain consistent casting conditions throughout the experiments, variables such as melt superheat and block temperature were kept constant within reasonable limits. The melt temperature was aimed at about 1525°C corresponding to a superheat of 75°C. Argon gas introduced into the furnace was quite effective in preventing chemical interaction of the melt with the surrounding atmosphere.
  • the melt chemistry was adjusted to achieve the desired (Cr/Ni) eq ratios, primarily through additions of Cr, Ni, C and N 2 .
  • Heat transfer rates from the strip surface to the substrate were determined from the measured substrate temperatures.
  • Figure 7 shows the influence of melt (Cr/Ni) eq ratio on heat fluxes for a textured substrate. It can be seen that the profiles are characterised by an early peak in the heat flux followed by rapid reduction of this peak and with increasing time, heat flux approaches a constant value. Higher heat transfer rates (about 30 MW/m 2 ) encountered in the early stages of solidification can be attributed to the intimate contact.
  • the experimental program determined that the (Cr/Ni) eq ratio found to producing the best surface texture (on a textured substrate) is less than 1.60.
  • Figure 8 reveals the influence of (Cr/Ni) eq ratio on heat transfer for a smooth substrate. It can be seen that the heat fluxes are relatively constant throughout solidification and most importantly, the magnitudes of the peak fluxes are much lower than those measured for a textured substrate ( Figure 7). This finding is in agreement with the observed solidification structure which is coarse at the surface. Although there are some variations in heat flux at different (Cr/Ni) eq ratios, there are no definite trends. However, with increasing time the heat fluxes approach similar values irrespective of (Cr/Ni) eq . This apparent lack of dependence of heat transfer on (Cr/Ni) eq ratio with a smooth substrate is in agreement with the observations of strip surface texture which was not influenced by (Cr/Ni) eq .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Coating With Molten Metal (AREA)
  • Metal Rolling (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Surgical Instruments (AREA)

Claims (11)

  1. Procédé de coulée continue d'une bande de métal du type dans lequel une masse de coulée de métal fondu est formée au contact d'une surface de coulée mobile de telle sorte que du métal se solidifie à partir de la masse sur la surface de coulée mobile, dans lequel le métal est un acier inoxydable austénitique contenant du chrome et du nickel selon un rapport (Cr/Ni)éq inférieur à 1,60, la surface de coulée a une texture telle que la valeur arithmétique moyenne de rugosité (Ra) est comprise dans la gamme de 2,5 à 15 µm et que la chaleur est transférée à partir dudit acier inoxydable austénitique qui se solidifie sur la surface de coulée texturée à une vitesse initiale de transfert de chaleur supérieure à 15 MW/m2 au cours des 20 ms initiales pour permettre la solidification dudit acier sur la surface de coulées sans ségrégation ni fissuration de surface nuisible.
  2. Procédé suivant la revendication 1, dans lequel la surface de coulée présente une texture de rainures et d'arêtes régulières.
  3. Procédé suivant la revendication 2 dans lequel la profondeur de la texture est comprise dans la gamme de 10 µm à 60 µm et le pas des rainures est compris dans la gamme de 100 µm à 200 µm.
  4. Procédé suivant la revendication 1, dans lequel la surface de coulée a une texture de protubérances discrètes régulièrement espacées avec un pas compris dans la gamme de 100 à 200 µm et une profondeur de texture comprise dans la gamme de 10 à 60 µm.
  5. Procédé suivant l'une quelconque des revendications précédentes, dans lequel le rapport du chrome au nickel ne dépasse pas 1,55.
  6. Procédé suivant l'une quelconque des revendications précédentes, dans lequel les teneurs en carbone, chrome et nickel de l'acier sont comprises dans les gammes suivantes : Carbone 0,04 à 0,06 % en poids Chrome 17,5 à 19,5 % en poids Nickel 8,0 à 10,0 % en poids
  7. Procédé de coulée continue d'une bande de métal du type dans lequel du métal fondu est introduit dans la pince formée entre deux rouleaux de coulée par l'intermédiaire d'une buse de distribution de métal située au-dessus de la pince pour créer une masse de coulée de métal fondu supportée sur des surfaces de coulée des rouleaux immédiatement au-dessus de la pince, dans lequel le métal est un acier inoxydable austénitique contenant du chrome et du nickel selon un rapport (Cr/Ni)eq inférieur à 1,60, les surfaces de coulée ont une texture telle qu'elles ont une Valeur arithmétique moyenne de rugosite (Ra) comprise dans la gamme de 2,5 à 15 microns et la chaleur est transférée à partir dudit acier inoxydable austénitique qui se solidifie sur les surfaces de coulée texturées des rouleaux à une vitesse initiale de transfert de chaleur supérieure à 15 MW/m2 au cours des 20 ms initiales pour permettre la solidification dudit acier sur les surfaces de coulées sans ségrégation ni fissuration.
  8. Procédé suivant la revendication 7, dans lequel les surfaces de coulée des rouleaux présentent une texture de rainures circonférentielles régulières avec une profondeur de texture comprise dans la gamme de 10 µm à 60 µm et un pas des rainures compris dans la gamme de 100 µm à 200 µm.
  9. Procédé suivant la revendication 7, dans lequel les rouleaux ont une texture de protubérances discrètes régulièrement espacées avec un pas d'espacement compris dans la gamme de 100 µm à 200 µm et une profondeur de texture comprise dans la gamme de 10 µm à 60 µm.
  10. Procédé suivant l'une quelconque des revendications 7 à 9, dans lequel le rapport du chrome au nickel ne dépasse pas 1,55.
  11. Procédé suivant l'une quelconque des revendications 7 à 10, dans lequel les teneurs en carbone, chrome et nickel de l'acier sont comprises dans les gammes suivantes : Carbone 0,04 à 0,06% en poids Chrome 17,5 à 19,5% en poids Nickel 8,0 à 10,0% en poids
EP95900015A 1993-11-18 1994-11-09 Coulee d'une bande d'acier inoxydable sur une surface a rugosite predeterminee Expired - Lifetime EP0679114B2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPM253993 1993-11-18
AUPM253993 1993-11-18
AUPM2539/93 1993-11-18
PCT/AU1994/000685 WO1995013889A1 (fr) 1993-11-18 1994-11-09 Coulee d'une bande d'acier inoxydable sur une surface a rugosite predeterminee

Publications (4)

Publication Number Publication Date
EP0679114A1 EP0679114A1 (fr) 1995-11-02
EP0679114A4 EP0679114A4 (fr) 1997-03-19
EP0679114B1 EP0679114B1 (fr) 1999-07-21
EP0679114B2 true EP0679114B2 (fr) 2004-11-03

Family

ID=3777367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95900015A Expired - Lifetime EP0679114B2 (fr) 1993-11-18 1994-11-09 Coulee d'une bande d'acier inoxydable sur une surface a rugosite predeterminee

Country Status (12)

Country Link
EP (1) EP0679114B2 (fr)
JP (1) JPH08505811A (fr)
KR (1) KR100305291B1 (fr)
AT (1) ATE182284T1 (fr)
DE (1) DE69419593T3 (fr)
DK (1) DK0679114T4 (fr)
ES (1) ES2134427T5 (fr)
FI (1) FI101944B (fr)
GR (1) GR3031222T3 (fr)
TW (1) TW276200B (fr)
WO (1) WO1995013889A1 (fr)
ZA (1) ZA949134B (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPN281195A0 (en) * 1995-05-05 1995-06-01 Bhp Steel (Jla) Pty Limited Casting steel strip
KR100650967B1 (ko) * 1996-03-22 2007-01-31 티쎈 스탈 아게 표면에딤플이형성된하나의가동벽상에서또는두개의가동벽사이에서오스테나이트스테인레스강스트립을연속주조하는방법및이를실행하기위한주조플랜트
FR2746333B1 (fr) * 1996-03-22 1998-04-24 Usinor Sacilor Procede de coulee continue d'une bande d'acier inoxydable austenitique sur une ou entre deux parois mobiles dont les surfaces sont pourvues de fossettes, et installation de coulee pour sa mise en oeuvre
AUPO710497A0 (en) * 1997-06-02 1997-06-26 Bhp Steel (Jla) Pty Limited Casting metal strip
AUPP515198A0 (en) * 1998-08-07 1998-09-03 Bhp Steel (Jla) Pty Limited Casting steel strip
US6942013B2 (en) 1998-08-07 2005-09-13 Lazar Strezov Casting steel strip
US7073565B2 (en) 1999-02-05 2006-07-11 Castrip, Llc Casting steel strip
FR2791286B1 (fr) * 1999-03-26 2001-05-04 Lorraine Laminage Procede de fabrication de bandes en acier au carbone par coulee continue entre deux cylindres
FR2792560B1 (fr) * 1999-04-22 2001-06-01 Usinor Procede de coulee continue entre cylindres de bandes d'acier inoxydable austenitique d'excellente qualite de surface, et bandes ainsi obtenues
CH691575A5 (de) * 1999-10-08 2001-08-31 Main Man Inspiration Ag Bandgiessmaschine zur Erzeugung eines Metallbandes sowie Verfahren zum Betrieb derselben.
AT412072B (de) 2002-10-15 2004-09-27 Voest Alpine Ind Anlagen Verfahren zur kontinuierlichen herstellung eines dünnen stahlbandes
NZ541204A (en) 2003-01-24 2007-04-27 Nucor Corp Casting steel strip
US20040144518A1 (en) 2003-01-24 2004-07-29 Blejde Walter N. Casting steel strip with low surface roughness and low porosity
US9149868B2 (en) 2005-10-20 2015-10-06 Nucor Corporation Thin cast strip product with microalloy additions, and method for making the same
US9999918B2 (en) 2005-10-20 2018-06-19 Nucor Corporation Thin cast strip product with microalloy additions, and method for making the same
US10071416B2 (en) 2005-10-20 2018-09-11 Nucor Corporation High strength thin cast strip product and method for making the same
AU2008100847A4 (en) 2007-10-12 2008-10-09 Bluescope Steel Limited Method of forming textured casting rolls with diamond engraving
WO2011100798A1 (fr) 2010-02-20 2011-08-25 Bluescope Steel Limited Nitratation d'acier au niobium et produit fabriqué par ce moyen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0378705A1 (fr) † 1988-07-08 1990-07-25 Nippon Steel Corporation PROCEDE DE FABRICATION DE TOLES MINCES EN ACIER INOXYDABLE Cr-Ni, DE QUALITE ET FINITION EXCELLENTES

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655893B1 (fr) * 1989-12-20 1992-04-17 Siderurgie Fse Inst Rech Dispositif de coulee de bandes minces de metal entre deux cylindres rotatifs et paralleles ou sur un seul cylindre.
JPH082484B2 (ja) * 1990-10-19 1996-01-17 新日本製鐵株式会社 表面品質の優れたオーステナイト系ステンレス鋼薄帯状鋳片、薄板の製造方法および薄帯状鋳片
GB9123603D0 (en) * 1991-11-06 1992-01-02 Davy Mckee Poole A roll for a twin roll caster
FR2684904B1 (fr) * 1991-12-11 1994-03-18 Usinor Sacilor Cylindre pour une machine de coulee continue de bandes metalliques, machine de coulee continue correspondante et procede de realisation d'un tel cylindre.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0378705A1 (fr) † 1988-07-08 1990-07-25 Nippon Steel Corporation PROCEDE DE FABRICATION DE TOLES MINCES EN ACIER INOXYDABLE Cr-Ni, DE QUALITE ET FINITION EXCELLENTES

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Thin strip casting experiments at IRSID and Thyssen Stahl AG", Iron and steelmaker, pp. 27-32, August 1993 †

Also Published As

Publication number Publication date
DE69419593T3 (de) 2005-06-09
DE69419593T2 (de) 1999-11-18
JPH08505811A (ja) 1996-06-25
ATE182284T1 (de) 1999-08-15
EP0679114B1 (fr) 1999-07-21
FI951985A0 (fi) 1995-04-26
FI101944B1 (fi) 1998-09-30
ES2134427T3 (es) 1999-10-01
GR3031222T3 (en) 1999-12-31
KR950704070A (ko) 1995-11-17
EP0679114A1 (fr) 1995-11-02
ZA949134B (en) 1995-07-24
KR100305291B1 (ko) 2001-11-22
DE69419593D1 (de) 1999-08-26
ES2134427T5 (es) 2005-05-16
EP0679114A4 (fr) 1997-03-19
FI951985L (fi) 1995-05-19
WO1995013889A1 (fr) 1995-05-26
FI101944B (fi) 1998-09-30
DK0679114T3 (da) 2000-02-07
TW276200B (fr) 1996-05-21
DK0679114T4 (da) 2004-12-13

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