CN1074328C - Side wall for closing off casting space of plant for twin-roll continuous casting of metal strip, and continuous caster equipped the side wall - Google Patents
Side wall for closing off casting space of plant for twin-roll continuous casting of metal strip, and continuous caster equipped the side wallInfo
- Publication number
- CN1074328C CN1074328C CN98119149A CN98119149A CN1074328C CN 1074328 C CN1074328 C CN 1074328C CN 98119149 A CN98119149 A CN 98119149A CN 98119149 A CN98119149 A CN 98119149A CN 1074328 C CN1074328 C CN 1074328C
- Authority
- CN
- China
- Prior art keywords
- casting
- sidewall
- roller
- roll gap
- chamber
- 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 - Fee Related
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
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
-
- 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
- B22D11/066—Side dams
-
- 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
- B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
- B22D11/0682—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting wheel
-
- 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
- B22D11/14—Plants for continuous casting
Abstract
The subject of the invention is a side wall for closing off the casting space of a plant for the continuous casting of metal strip of the type comprising two internally cooled counter-rotating rolls, of horizontal axes, the cylindrical lateral surfaces of which define a casting space whose width at the nip determines the thickness of the strip, the said side wall having an active part intended to rub against the end faces of the rolls during casting and to face the said casting space, characterized in that the dimensions of the said active part are such that its lower edge is intended to lie a distance equal to at least 1 mm above the nip when the side wail is mounted on the casting plant. Another subject of the invention is a plant for the continuous casting of metal strip of the type comprising two internally cooled counter-rotating rolls, of horizontal axes, the cylindrical lateral surfaces of which define a casting space whose width at the nip determines the thickness of the strip, and two side walls for closing off its casting space, characterized in that the said side walls are of the above type.
Description
The present invention relates to directly make the continuous casting steel machine of metal thin strip by molten metal.Specifically, the present invention relates to side closure member especially for the casting chamber of what is called " twin roller casting " equipment of cast steel strip or ferrous alloy band.
In this Casting Equipment (the purposes industrialization that its band casting in bronze that is used for several millimeters thick is made), on the one hand, the casting chamber has been subjected to rotating in opposite direction and the restriction of the interior cooling cylindrical side surface of two close horizontal roller that molten metal begins to solidify thereon around it, on the other hand, the casting chamber has been subjected to being pressed in by elastic component the restriction of the refractory material plate on the planar ends (being called as " end face ") of roll.These refractory material plates along lateral seal described casting chamber, come to prevent that molten metal from spilling from conticaster.The lower limb of this plate is positioned at " roll gap " below, promptly is positioned at the below, zone that the most close and its width in two roller surfaces approximates desirable thickness of strip.
Definitely must be before continuous casting the obvious temperature of rising side seal closing plate, to prevent molten metal when filling crystallizer (in filling process, the bottom of crystallizer is by " dummy bar " sealing that is drawn out) and in first moment of casting, freeze solidly on the side seal closing plate from the casting chamber when roller begins to rotate and spur the band head.Even but having adopted such precautionary measures, sidewall also constitutes the thermally labile district in the conticaster, and they have formed a zone of drawing the molten metal heat singularly in a large number inevitably in its vicinity.Particularly in the close zone of roller, that's how things stand.Because described roller is by water circulation and by interior cooling, so near the sidewall the zone that roller comes in contact cooling.This may cause molten steel to solidify more quickly than at the roller position of more close its central area in roller edge, and this may be exactly the root place of problem.This is normally because metal base shell that solidify on each roller and that its thickness increases on predetermined point gradually along with the roller rotation must converge at the roll gap place exactly or must converge to heavens so that form the cause of band a little less than this.If the base shell converges below roll gap very significantly, then existence band when band leaves roller is incited somebody to action danger hard inadequately so that the band cracking.Also exist band to have the danger of internal void.On the contrary, if the base shell particularly under the influence of crossing the cold side wall and converge in the roll gap upstream, then the roll gap place thickness that solidifies band surpasses the nominal width of roll gap.Therefore, must separate roller and band be applied rolling load (the casting roller applies the designed use that rolling load is not the casting roller) to prevent roller.Separately two rollers are the reasons that produce the band defective relevant with the product solidification mode with described varied in thickness.Band is exactly to be applied to the high pressure that lower sidewall is divided by the frozen metal near other result that unusual environment caused of solidifying the sidewall.Such situation often occurs, promptly described high pressure is enough to make sidewall to recede in its local height scope at least, and the sealing that contacts between this possibility local failure roller and the sidewall.So molten metal might spill from the casting chamber.
The structure that the purpose of this invention is to provide a kind of Casting Equipment, it can form the band coagulating environment near sidewall, and described sidewall is not easy to destroy the uniformity of casting process.This Casting Equipment also should be able to limit the sweptback phenomenon of sidewall.
Theme of the present invention is a kind of sidewall that is used for the casting chamber of closed metal band continuous casting installation for casting, described continuous casting installation for casting comprises that two interior coolings with horizontal roll shaft are to transfer roller, the cylindrical side of described roller has constituted the border in described casting chamber, the width in casting chamber, roll gap place has determined the thickness of band, this sidewall have one will be in casting process friction roller end face and will be in the face of the movable part in described casting chamber, wherein the size of this movable part is such, when this sidewall is installed on the Casting Equipment, the lower limb of sidewall will have one section spacing that equals 1 millimeter at least from roll gap above roll gap.
Another theme of the present invention is a kind of continuous casting installation for casting of sheet metal strip, this continuous casting installation for casting comprises two sidewalls with interior cooling of horizontal roll shaft to transfer roller and two its casting chambeies of sealing, the cylindrical side of described roller has constituted the border in described casting chamber, the width in casting chamber, roll gap place has determined the thickness of band, and wherein this sidewall belongs to the sidewall of the above-mentioned type.
As will recognizing, according to the present invention, the movable part of sidewall, the side member that promptly contacts or contact with casting chamber contained molten metal with the roller end face do not resemble in conventional situation end at roll gap below, but end at the top of roll gap.Therefore, stayed idle space in the roll gap both sides, metal does not contact with any refractory material in this space, therefore can not apply any pressure by oppose side wall.So very high even it has solidified the part proportion, the metal that this space ran into also can not cause sidewall to recede.In addition, this spacious space can make the metal that has solidified or solidifying stretch to outside the casting chamber, this reduced the roller edge the active force that must bear.
The inventor has been noted that, the environment of cooling molten steel is such in crystallizer under common casting parameter situation, it is outer promptly can not drain to conticaster significantly for molten metal, even metal is not limited by sidewall, metal is from freezing solidly on the edge in casting chamber (although not solidifying fully as yet) enough in advance at several centimetres height above the roll gap.The inventor is inference thus, can save the lower member of prior art sidewall.Saving these parts can make conticaster more can be tolerated in the slight deviations that occurs in the band process of setting.Certainly in the present invention, the thickness of the roller edge solidified shell bigger slightly than thickness that originally last several millimeters or several centimetres of places are expected before roll gap no longer causes sidewall to recede or the danger of the casting chamber upper strata loss of seal relevant with it.In addition, if roller is partly exerted pressure to the band that has excessively solidified, then described band part can lateral spread, can not need thus roller separately in case reduce significantly they the stress that must bear.
Thereby, the invention provides the stability of better casting environment, this helps the better band total quality and the better functional reliability of conticaster.
Reading the following description postscript, with the present invention may be better understood.The following description book is described referring to subsequent drawings.Wherein:
-Fig. 1 has schematically drawn in I b-I b cross section, and (Fig. 1 a) and side view (Fig. 1 b) according to the front view of the double-roller continuous casting machine sidewall of prior art.
-Fig. 2 has schematically drawn in II b-II b cross section, and (Fig. 2 a) and side view (Fig. 2 b) according to the front view of double-roller continuous casting machine sidewall of the present invention.
Sidewall 1 according to prior art shown in Figure 1 comprises that movable part 3 installing of a sidewall 1 goes into support plate 2 wherein, and described movable part is exactly will solidify the parts that band contacts with the molten steel that comprised in the casting chamber 6 of roller 5,5 ' end face 4 (in Fig. 1 a a with dashed lines drawn the profile of roller), equipment and in some of the height below of roller 5,5 ' hithermost roll gap 7 in casting process.Known device (not shown) itself is pressed against sidewall 1 on roller 5,5 ' the end face 4.By allowing sidewall 1 temporary transient spring or the push rod of regaining, metal can infiltrate between movable part 3 and roller 5,5 ' the end face 4, perhaps by solidifying band its underpart is applied excessive active force.As for description to the embodiment (non-limiting) of this device, especially can be referring to the EP-A-0698433 document.In the embodiment shown, movable part 3 is divided into two parts.The two arch sections 8 that constitute the circle in the zone that contacts with zone around roll gap 7 with the central part of roller 5,5 ' end face 4, this contact zone when being contained in sidewall 1 on the equipment are made by first refractory material.Its key property is a high rigidity, thus it can bear with the friction of roller 5,5 ' end face 4 and with near the friction (roll gap 7) of the band that is solidifying or solidified.For example, it is by SiAlON
Or boron nitride is made.It may be to be made of single-piece or some abutments that tightens together.The lower limb 9 of two arch sections 8 is positioned at the below of roll gap 7, so that from below complete closed casting chamber 6.The remainder of movable part 3 is to be made as tripoli or alumina by the refractory material of excellent heat insulating performance.The maximum that the movable part 3 of sidewall 1 has been given prominence to during one equals to cast at least with respect to support plate 2 allows the thickness of wear extent as 10 millimeters.In casting process, the part that contacts with roller 5,5 ' end face 4 of movable part 3 is is mainly worn and torn because of friction, consequently, enter slightly at leisure and cast in the chamber 6 because of only contact other parts with the movable part 3 of slower speed wearing and tearing with molten metal or the molten steel that solidifying.Mode as an alternative, the whole movable part 3 of sidewall 1 can be made into a monomer spare.
Expression according to Fig. 2 that is installed in the sidewall 11 on the conticaster of the present invention in, the parts identical with the parts of Fig. 1 are represented with same label.According to the present invention, for above-mentioned reasons, the lower limb 12 of movable part 3 of sidewall 11 of bottom that contacts and seal casting chamber 6 with roller 5,5 ' but has the roll gap top of an intersegmental distance " d " at the distance roll gap not below roll gap 7.If the ratio of the base shell that can solidify as usual control accurately solid-state material in the development of roller 5,5 ' edge and the metal that do not solidify fully as yet in this zone in casting chamber 6 can become 100% by 0 soon, then this spacing " d " can be very little of 1 millimeter.These parameters especially depend on the steel grade that is cast.High-carbon steel grade and contain the steel grade of various alloying elements such as stainless steel has the solidification zone wideer than straight carbon steel or dilval (between liquidus temperature and the solidus temperature poor), this makes the control of its curing condition more become complicated.At first, wide solidification zone mean beginning the casting chamber 6 higher position and near sidewall 11, observe a large amount of solid-state materials.Therefore, for steel grade, must be provided with one greater than having narrow solidification zone and in case arriving the spacing " d " of liquidus temperature with regard to the spacing under the situation of the steel grade of rapid solidification with wide solidification zone.In fact, the spacing of 10mm-40mm " d " is applicable to most of common, stainless steel grades of casting 3 millimeters thick bands with the casting speed of the roller in 1500 millimeters rollers footpaths and 1m/min level.The selection of optimal spacing " d " also can decide according to the molten steel static pressure in casting chamber bottom and then according to the geometry of conticaster and the nominal altitude of casting molten steel face in the chamber.Therefore, when casting low-alloy carbon steel and ferro-silicium, can be for obtaining good result under the situation of 1mm-7mm in 600 millimeters the equipment of roller and in spacing " d " in that diameter is housed.
Preferred scheme is such, for reduce put on the lower limb and may cause rapidly and the uncontrollably damaged mechanical stress in this edge, lower limb 12 towards sidewall 11 movable parts 3 of casting chamber 6 does not have wedge angle, for example may be the rounded portion about 10mm-20mm 13 but have its radius of curvature.Can be by finishing identical effect as lower limb 12 being fallen into an inclined-plane with miter angle.
Also it is contemplated that the scheme of coming cooling strip material by atomizing of liquids (water, liquid argon or liquid nitrogen etc.) between the lower limb of the movable part 3 of sidewall 11 and roll gap 7.Sustainablely carry out such cooling and always solidify enough well, thereby band can not ftracture and allow molten metal spill to guarantee strip edge.Also can be only when observing this crack at edge and just begun, just carry out above-mentioned cooling, perhaps when the monitoring result of casting parameter is suspected the people might to occur ftractureing danger, carry out above-mentioned cooling.As device from cooling fluid to strip edge that carry, for example can adopt one or more to pass support plate 2 and feed and be positioned at support plate 2, roller 5,5 ' end face 4 and the groove 14 in the space 15 between the roll gap 7.But, it is contemplated that out that also other may be with respect to sidewall 11 infusion set independently, as dream up and one or morely be arranged on sidewall 11 belows and nozzle that point to the band zone.
A sign of effect of the present invention is the observed sidewall number of times that recedes in casting process.Therefore observe, compare 1/3rd before above-mentioned hypsokinesis number of times may equal in whole casting cycle with the situation that adopts the sidewall that is reduced to the roll gap below always.When having considered the situation of conticaster at the first few minutes job insecurity that just begins to cast, above-mentioned improvement effect is more obvious.When being that 25 millimeters, roller directly are under 1500 millimeters the condition during casting 3 millimeters thick SUS304 austenitic stainless steel strips in spacing " d ", obtain above-mentioned those observed results.
If desired, this sidewall installed to may be needed on the existing conticaster dummy bar is done some changes, so that before beginning casting, seals whole casting chamber 6 from the side when filling the casting chamber.
Self-evidently be, purposes of the present invention is not subjected to the restriction of the specific sidewall shape that exemplified out, and it is applicable to and allows movable part to end at other Any shape of roll gap top.
Certainly, the present invention not only is used to the twin roller casting with steel and other iron-alloy band material, and can adopt the method to cast other any metal.
Claims (6)
1. sidewall (11) that is used for the casting chamber (6) of closed metal band continuous casting installation for casting, described continuous casting installation for casting comprises that two interior coolings with horizontal roll shaft are to transfer roller (5,5 '), the cylindrical side of described roller has constituted the border in described casting chamber (6), the width that roll gap (7) locates to cast the chamber has determined thickness of strip, this sidewall (11) have one will be in casting process friction roller (5,5 ') end face (4) also will be towards the movable part (3) in described casting chamber (6), it is characterized in that, the size of this movable part (3) is such, when sidewall (11) is installed on the Casting Equipment, sidewall lower limb (12) will have one section spacing (d) that equals 1 millimeter at least from this roll gap in roll gap (7) top.
2. sidewall as claimed in claim 1, it is characterized in that, movable part (3) is installed on the support plate (2), support plate (2) has at least one and passes this support plate and feeding is positioned at support plate (2), roller (5, the groove (14) in the space (15) between end face 5 ') (4) and the roll gap (7), this groove (14) can link to each other with the cooling fluid injection apparatus.
3. sidewall as claimed in claim 1 or 2 is characterized in that, lower limb (12) has a rounded portion (13) towards casting chamber (6).
4. sidewall as claimed in claim 1 or 2 is characterized in that, lower limb (12) has a chamfering towards casting chamber (6).
5. the continuous casting installation for casting of a sheet metal strip, this class continuous casting installation for casting comprises that two interior coolings with horizontal roll shaft are to transfer roller (5,5 ') and two sidewalls (11) that are used to seal its casting chamber, the cylindrical side of described roller has constituted the border in described casting chamber (6), the width that roll gap (7) locates to cast the chamber has determined the thickness of band, this sidewall (11) have one will be in casting process friction roller (5,5 ') end face (4) also will be towards the movable part (3) in described casting chamber (6), it is characterized in that, the size of this movable part (3) is such, when sidewall (11) is installed on the Casting Equipment, sidewall lower limb (12) will have one section spacing (d) that equals 1 millimeter at least from this roll gap in roll gap (7) top.
6. continuous casting installation for casting as claimed in claim 5 is characterized in that, it comprises the device that is used for cooling fluid is ejected into the band zone above roll gap (7).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9711351 | 1997-09-12 | ||
| FR9711351A FR2768354B1 (en) | 1997-09-12 | 1997-09-12 | SIDE PANEL FOR SHUTTERING THE CASTING SPACE OF A CONTINUOUS CASTING INSTALLATION OF METAL STRIPS BETWEEN CYLINDERS, AND CASTING INSTALLATION THUS EQUIPPED |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1212914A CN1212914A (en) | 1999-04-07 |
| CN1074328C true CN1074328C (en) | 2001-11-07 |
Family
ID=9511009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98119149A Expired - Fee Related CN1074328C (en) | 1997-09-12 | 1998-09-11 | Side wall for closing off casting space of plant for twin-roll continuous casting of metal strip, and continuous caster equipped the side wall |
Country Status (22)
| Country | Link |
|---|---|
| EP (1) | EP0901851B1 (en) |
| JP (1) | JPH11151556A (en) |
| KR (1) | KR19990029727A (en) |
| CN (1) | CN1074328C (en) |
| AT (1) | ATE236749T1 (en) |
| AU (1) | AU8312298A (en) |
| BR (1) | BR9803422A (en) |
| CA (1) | CA2247538A1 (en) |
| CZ (1) | CZ287998A3 (en) |
| DE (1) | DE69813120T2 (en) |
| DK (1) | DK0901851T3 (en) |
| ES (1) | ES2196512T3 (en) |
| FR (1) | FR2768354B1 (en) |
| IN (1) | IN188785B (en) |
| PL (1) | PL328526A1 (en) |
| PT (1) | PT901851E (en) |
| RO (1) | RO119996B1 (en) |
| RU (1) | RU2208497C2 (en) |
| SK (1) | SK123598A3 (en) |
| TR (1) | TR199801783A3 (en) |
| TW (1) | TW504414B (en) |
| ZA (1) | ZA988049B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4216340B2 (en) * | 1996-10-18 | 2009-01-28 | ミシュラン ルシェルシュ エ テクニーク ソシエテ アノニム | Aqueous coagulant for liquid crystal solutions based on cellulose materials |
| AT412195B (en) * | 2002-06-25 | 2004-11-25 | Voest Alpine Ind Anlagen | METHOD FOR PRODUCING A METAL STRIP WITH A TWO-ROLLING CASTING DEVICE |
| FR2842130B1 (en) * | 2002-07-12 | 2004-10-15 | Usinor | SIDE SIDE FOR INSTALLATION OF CONTINUOUS CASTING OF METAL STRIPS BETWEEN TWO CYLINDERS |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0212423A2 (en) * | 1985-08-05 | 1987-03-04 | Hitachi, Ltd. | Continuous casting apparatus of twin-drum type |
| EP0360635A1 (en) * | 1988-09-14 | 1990-03-28 | Usinor Sacilor | Side wall for a continuous casting plant between movable walls, installations with walls, method suitable for contiuous casting thin metallic products |
| EP0432073A1 (en) * | 1989-12-07 | 1991-06-12 | USINOR SACILOR Société Anonyme | Device for continuous casting thin metallic products between two rolls |
-
1997
- 1997-09-12 FR FR9711351A patent/FR2768354B1/en not_active Expired - Fee Related
-
1998
- 1998-09-02 PT PT98402164T patent/PT901851E/en unknown
- 1998-09-02 DE DE69813120T patent/DE69813120T2/en not_active Expired - Fee Related
- 1998-09-02 ES ES98402164T patent/ES2196512T3/en not_active Expired - Lifetime
- 1998-09-02 EP EP98402164A patent/EP0901851B1/en not_active Expired - Lifetime
- 1998-09-02 DK DK98402164T patent/DK0901851T3/en active
- 1998-09-02 AT AT98402164T patent/ATE236749T1/en not_active IP Right Cessation
- 1998-09-03 ZA ZA988049A patent/ZA988049B/en unknown
- 1998-09-03 IN IN562BO1998 patent/IN188785B/en unknown
- 1998-09-04 AU AU83122/98A patent/AU8312298A/en not_active Abandoned
- 1998-09-09 CZ CZ982879A patent/CZ287998A3/en unknown
- 1998-09-09 TR TR1998/01783A patent/TR199801783A3/en unknown
- 1998-09-09 SK SK1235-98A patent/SK123598A3/en unknown
- 1998-09-10 JP JP10256748A patent/JPH11151556A/en not_active Withdrawn
- 1998-09-11 CA CA002247538A patent/CA2247538A1/en not_active Abandoned
- 1998-09-11 CN CN98119149A patent/CN1074328C/en not_active Expired - Fee Related
- 1998-09-11 RU RU98117310/02A patent/RU2208497C2/en not_active IP Right Cessation
- 1998-09-11 RO RO98-01379D patent/RO119996B1/en unknown
- 1998-09-11 PL PL98328526A patent/PL328526A1/en unknown
- 1998-09-11 KR KR1019980037537A patent/KR19990029727A/en not_active Application Discontinuation
- 1998-09-11 BR BR9803422-7A patent/BR9803422A/en not_active Application Discontinuation
- 1998-09-28 TW TW087116127A patent/TW504414B/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0212423A2 (en) * | 1985-08-05 | 1987-03-04 | Hitachi, Ltd. | Continuous casting apparatus of twin-drum type |
| EP0360635A1 (en) * | 1988-09-14 | 1990-03-28 | Usinor Sacilor | Side wall for a continuous casting plant between movable walls, installations with walls, method suitable for contiuous casting thin metallic products |
| EP0432073A1 (en) * | 1989-12-07 | 1991-06-12 | USINOR SACILOR Société Anonyme | Device for continuous casting thin metallic products between two rolls |
Also Published As
| Publication number | Publication date |
|---|---|
| TR199801783A2 (en) | 1999-10-21 |
| DE69813120T2 (en) | 2004-01-29 |
| SK123598A3 (en) | 1999-06-11 |
| PL328526A1 (en) | 1999-03-15 |
| CN1212914A (en) | 1999-04-07 |
| DK0901851T3 (en) | 2003-07-28 |
| FR2768354A1 (en) | 1999-03-19 |
| EP0901851A1 (en) | 1999-03-17 |
| AU8312298A (en) | 1999-03-25 |
| RO119996B1 (en) | 2005-07-29 |
| JPH11151556A (en) | 1999-06-08 |
| ES2196512T3 (en) | 2003-12-16 |
| TW504414B (en) | 2002-10-01 |
| DE69813120D1 (en) | 2003-05-15 |
| EP0901851B1 (en) | 2003-04-09 |
| IN188785B (en) | 2002-11-09 |
| FR2768354B1 (en) | 1999-10-22 |
| TR199801783A3 (en) | 1999-10-21 |
| ATE236749T1 (en) | 2003-04-15 |
| PT901851E (en) | 2003-07-31 |
| CZ287998A3 (en) | 1999-08-11 |
| RU2208497C2 (en) | 2003-07-20 |
| KR19990029727A (en) | 1999-04-26 |
| BR9803422A (en) | 1999-11-03 |
| CA2247538A1 (en) | 1999-03-12 |
| ZA988049B (en) | 1999-03-05 |
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