EP1365870B1 - Verfahren zum entzundern von bändern - Google Patents
Verfahren zum entzundern von bändern Download PDFInfo
- Publication number
- EP1365870B1 EP1365870B1 EP02700270A EP02700270A EP1365870B1 EP 1365870 B1 EP1365870 B1 EP 1365870B1 EP 02700270 A EP02700270 A EP 02700270A EP 02700270 A EP02700270 A EP 02700270A EP 1365870 B1 EP1365870 B1 EP 1365870B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- water
- finishing train
- pressure
- scale
- 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
Links
- 238000000034 method Methods 0.000 title claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 238000009826 distribution Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims 3
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
Definitions
- the invention relates to a method for descaling strips in a rolling mill with a scale washer and one in the direction of the belt behind the tinder washer arranged finishing line, where the belt in the tinder washer as well as within the rolling mill on the top and bottom with Water is pressurized, with a symmetrical temperature distribution generated on the top and bottom of the belt in the scale washer and in same way is maintained within the finishing train.
- Tinder is an oxide layer which among other things when rolling steel on the strip.
- the scale growth depends essentially on the surface temperature of the strip, the scaling time, the environmental conditions and the material of the tape. A higher surface temperature, longer scaling time and softer Steels lead to stronger scale growth.
- EP 0 920 929 A2 proposes, in the running direction of the belt in front of the to provide first, second and third stands of the finishing mill surface cooler, the rows of nozzles arranged opposite each other on both sides of the belt exhibit.
- a controller determines the total amount of water by every row of nozzles is sprayed onto the belt.
- the scale washer arranged in front of the finishing train consists of two on both Rows of nozzles arranged opposite each other on the belt.
- the belt is subjected to high descaling pressure (about 200 bar) water. Due to the double-sided application thermal energy is extracted from the belt with water. As a result of different Conditions on the top and bottom result in uneven temperatures. Because of the laws of scale growth described at the beginning scale growth begins immediately behind the nozzle bar again, due to the different temperatures on the edge surfaces the secondary scale grows back at different speeds. Also forms a different hardness of scale due to the unequal temperatures.
- the invention is therefore based on the object of proposing a method, that the adverse effects of different temperatures as well as different Scale growth between the top and bottom of the belt reduced within the finishing train.
- the solution to this task is based on the idea of the necessary measures to avoid uneven temperatures and scale growth already in the area of the scale washer to seize by the tape in the scale washer on several arranged one behind the other in the running direction Places with water under descaling pressure, the in Direction of travel last position on the underside at a distance from the last position located at the top and closer to the finishing train.
- Water is applied at the various points on the belt for example by means of rows of nozzles known per se.
- the distance to choose the last row of nozzles at the bottom from the last row of nozzles at the top depends on the difference in cooling effect on the top and bottom and the scale growth of the rolled material in the respective rolling mill from.
- the underside in one embodiment of the invention as a whole a larger amount of water under descaling pressure than the top of the Band are applied.
- a smaller distance between the last two Row of nozzles may be necessary due to design constraints on the rolling mill his.
- the application takes place with Water at a lower pressure in the direction of travel of the belt using rows of nozzles before and / or after the last position on the underside of the tape, at the this is pressurized with water under descaling pressure.
- the amount of water required for a symmetrical temperature distribution depends on the feed speed before the finishing train, the wear of the Descaling nozzles in the nozzle rows, from the pressure level and the Width of the tape.
- the amount of descaling pressure and low pressure on the tape applied water preferably adjustable.
- the symmetrical temperature distribution monitored on the top and bottom of the belt by non-contact, especially behind the scale washer in the direction of the belt arranged pyrometers, the temperatures on the top and bottom of the tape can be measured.
- the amount of water under lower pressure can then be as The manipulated variable of a control loop can be changed so that on the upper and Same temperatures are always measured on the underside.
- the rolling torques can be used as a control variable for the temperatures at least one scaffold of the finishing train above and below the belt be measured.
- the tape at least between the first two scaffolds of the finishing train with water is, the bottom with a larger amount of water than the top of the band is applied. Even the arrangement the upper and lower bars can be offset from each other by the distance y respectively.
- the measures taken within the finishing train can also be used with the help of a control loop can be monitored with the measured temperatures the top and bottom of the belt as a controlled variable and the amount of water supplied as stele size.
- FIG. 1 shows a finishing train 1 with one arranged upstream in the direction of travel 2 Tinder washer 3 in a hot strip mill. That is the hot strip mill continuous belt 4 is in the scale washer 3 on the top 5 and the bottom 6 of a total of four nozzle rows 7, 8 with water below Descaling pressure of about 200 bar. The at the bottom 6 in Direction 2 of the last row of nozzles 8 is closer to the finishing train 1 than the last row of nozzles 7 in the running direction at the top 5 by a symmetrical Temperature distribution on the top and bottom 5, 6 of the band 4 too achieve.
- the distance 11 between the last row of nozzles 7 at the top and the The last row of nozzles 8 on the underside of the belt must always be determined that the cooling effect of the on the top 5 of the band the bottom 6 corresponds.
- the distance 11 can, however, for design reasons, for example the space requirement of the scale washer, the arrangement of rollers or pipes may be limited. For this reason, the cooling of the Bottom 6 of the band supported by the nozzle rows 9 with low pressure.
- an excessively large distance 11 would be disadvantageous because the longer Path from the last row of nozzles 7 at the top 5 to the inlet in the finishing line 1 again a thicker layer of scale on the top can train.
- FIG. 2 shows a schematic side view of a scale washer 3, however without rows of nozzles 9 for low pressure water.
- water collecting channels 17th are arranged, which additionally reduce the cooling effect on the belt top 5 and can be used to a limited extent as an actuator.
- Figure 3 finally shows a scale washer 3, in which an application the tape 4 with water under lower pressure with a row of nozzles 9 before and two rows of nozzles 9 behind the last row of nozzles 7 on the underside of the Belt takes place on which this is pressurized with water under descaling pressure becomes.
Description
In der JP - A - 1 - 205 810 wird vorgeschlagen, die Temperaturdifferenz der Ober- und der Unterseite eines Bandes im Zunderwäscher in einem Bereich zwischen 0 ° C und 50 °C zu halten.
- Figur 1
- ein Prinzipdarstellung zur Veranschaulichung des erfindungsgemäßen Verfahrens,
- Figur 2
- eine Seitenansicht eines Zunderwäschers in einer Walzstraße sowie
- Figur 3
- eine Seitenansicht eines Zunderwäschers in einer Walzstraße mit einer Zusatzkühlung.
- Die Einzugsgeschwindigkeit des Bandes vor der Fertigstraße 1 ändert sich abhängig von der Fertigbanddicke und dem Bandmaterial
- die Düsen in den Düsenreihen 7, 8 unterliegen einem Verschleiß, so daß sich die Wassermenge im Laufe der Zeit ändert
- das Druckniveau im Versorgungsnetz der Düsenreihen 7 schwankt,
- unterschiedliche Breiten des Bandes 4 beeinflussen das Ablaufen des auf der Oberseite 5 des Bandes 4 stehenden Wassers.
- 1.
- Fertigstraße
- 2.
- Laufrichtung des Bandes
- 3.
- Zunderwäscher
- 4.
- Band
- 5.
- Oberseite
- 6.
- Unterseite
- 7.
- Düsenreihen (Entzunderungsdruck)
- 8.
- Düsenreihen (Entzunderungsdruck)
- 9.
- Düsenreihe (Niederdruck)
- 10.
- Abstand y
- 11.
- Abstand x
- 12., 12'
- Pyrometer
- 13.
- Meßpunkte
- 14.
- Rechner
- 15.
- Anlagedaten
- 16.
- Düsenreihen innerhalb der Fertigstraße
- 17., 17'
- Düsenreihen innerhalb der Fertigstraße
- 18., 18'
- Düsenreihen innerhalb der Fertigstraße
Claims (7)
- Verfahren zum Entzundem von Bändern (4) in einer Walzstraße mit einem Zunderwäscher (3) sowie einer in Laufrichtung (2) des Bandes (4) hinter dem Zunderwäscher (3) angeordneten Fertigstraße (1), bei dem das Band (4) in dem Zunderwäscher (3) auf der Ober- und Unterseite (5, 6) mit Wasser unter Entzunderungsdruck beaufschlagt sowie innerhalb der Fertigstraße (1) gekühlt wird, wobei eine symmetrische Temperaturverteilung an der Ober-und Unterseite (5, 6) des Bandes (4) im Zunderwäscher (3) erzeugt und in gleicher Weise innerhalb der Fertigstraße aufrechtgehalten wird, wobei
das Band (4) im Zunderwäscher (3) an mehreren in Laufrichtung (2) hintereinander angeordneten Stellen (7,8) mit Wasser unter Entzunderungsdruck beaufschlagt wird, dadurch gekennzeichnet, daß sich die in Laufrichtung letzte Stelle (8) an der Unterseite (6) in einem Abstand (11) zu der letzten Stelle (7) an der Oberseite (5) und näher an der Fertigstraße (1) befindet. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die Unterseite (6) zusätzlich zu dem Wasser unter Entzunderungsdruck mit Wasser unter niedrigerem Druck im Bereich zwischen 4 und 10 bar beaufschlagt wird. - Verfahren nach Anspruch 2,
dadurch gekennzeichnet, daß die Beaufschlagung mit Wasser unter niedrigerem Druck in Laufrichtung (2) des Bandes (4) vor und /oder hinter der letzten Stelle (8) an der Unterseite (6) des Bandes (4) erfolgt, an der dieses mit Wasser unter Entzunderungsdruck beaufschlagt wird. - Verfahren nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß die Menge des unter Entzunderungsdruck und niedrigerem Druck auf das Band (4) aufgebrachten Wassers einstellbar ist. - Verfahren nach Anspruch 4,
dadurch gekennzeichnet, daß berührungslos, insbesondere mit einem Pyrometer, die Temperaturen an der Ober- und Unterseite (5,6) des Bandes (4) in dessen Laufrichtung (2) hinter dem Zunderwäscher (3) und/oder die Walzmomente an mindestens einem Gerüst der Fertigstraße (1) oberhalb und unterhalb des Bandes (4) als Regelgröße eines Regelkreises gemessen werden und mittels einer Recheneinheit (14) die einstellbare Wassermenge als Stellgröße des Regelkreises verändert wird. - Verfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß das Band (4) zumindest zwischen den ersten beiden Gerüsten F1, F2 der Fertigstraße mit Wasser beaufschlagt wird, wobei die Unterseite (6) insgesamt mit einer größeren Wassermenge als die Oberseite (5) des Bandes (4) beaufschlagt wird. - Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß die oberen und unteren Balken zueinander versetzt angeordnet sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10110324 | 2001-03-03 | ||
DE10110324A DE10110324A1 (de) | 2001-03-03 | 2001-03-03 | Verfahren zum Entzundern von Bändern |
PCT/EP2002/001927 WO2002070157A1 (de) | 2001-03-03 | 2002-02-23 | Verfahren zum entzundern von bändern |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1365870A1 EP1365870A1 (de) | 2003-12-03 |
EP1365870B1 true EP1365870B1 (de) | 2004-10-20 |
Family
ID=7676228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02700270A Expired - Lifetime EP1365870B1 (de) | 2001-03-03 | 2002-02-23 | Verfahren zum entzundern von bändern |
Country Status (11)
Country | Link |
---|---|
US (1) | US7181943B2 (de) |
EP (1) | EP1365870B1 (de) |
JP (1) | JP4136662B2 (de) |
CN (1) | CN1269584C (de) |
AT (1) | ATE280003T1 (de) |
CZ (1) | CZ298608B6 (de) |
DE (2) | DE10110324A1 (de) |
RU (1) | RU2281174C2 (de) |
TW (1) | TW505549B (de) |
UA (1) | UA76744C2 (de) |
WO (1) | WO2002070157A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018215492A1 (de) * | 2018-09-12 | 2020-03-12 | Sms Group Gmbh | Verfahren zu Herstellung eines metallischen Gutes |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
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US7077724B1 (en) | 2005-06-06 | 2006-07-18 | The Material Works, Ltd. | Sheet metal scale removing water jet process |
DE102005047936A1 (de) * | 2005-10-06 | 2007-04-12 | Sms Demag Ag | Verfahren und Vorrichtung zum Reinigen von Brammen, Dünnbrammen, Profilen oder dergleichen |
DE102006001195A1 (de) * | 2006-01-10 | 2007-07-12 | Sms Demag Ag | Verfahren zum Gieß-Walzen mit erhöhter Gießgeschwindigkeit und daran anschließendem Warmwalzen von relativ dünnen Metall-,insbesondere Stahlwerkstoff-Strängen,und Gieß-Walz-Einrichtung |
US8062095B2 (en) * | 2006-09-14 | 2011-11-22 | The Material Works, Ltd. | Method of producing rust inhibitive sheet metal through scale removal with a slurry blasting descaling cell having improved grit flow |
US8128460B2 (en) * | 2006-09-14 | 2012-03-06 | The Material Works, Ltd. | Method of producing rust inhibitive sheet metal through scale removal with a slurry blasting descaling cell |
US8066549B2 (en) * | 2006-09-14 | 2011-11-29 | The Material Works, Ltd. | Method of producing rust inhibitive sheet metal through scale removal with a slurry blasting descaling cell having improved grit flow |
EP2028290A1 (de) * | 2007-08-21 | 2009-02-25 | ArcelorMittal France | Verfahren und Vorrichtung zur sekundären Entzunderung der metallischen bandförmigen Behandlungsgut mit Wassersprühen unter niedrigen Druck |
US7585206B2 (en) * | 2008-01-22 | 2009-09-08 | Royal Master Grinders, Inc. | Spool to spool continuous through feed system |
CN101618406B (zh) * | 2008-06-30 | 2012-02-01 | 鞍钢股份有限公司 | 一种热轧酸洗板表面色差控制方法 |
DE102008047029A1 (de) * | 2008-09-13 | 2010-03-18 | Sms Siemag Aktiengesellschaft | Entzunderungsvorrichtung |
AT507663B1 (de) * | 2009-04-09 | 2010-07-15 | Siemens Vai Metals Tech Gmbh | Verfahren und vorrichtung zum aufbereiten von warmwalzgut |
GB2471120B (en) * | 2009-06-18 | 2011-10-05 | Siemens Vai Metals Tech Ltd | Descaler for variable thickness metal |
TWI420108B (zh) * | 2009-09-21 | 2013-12-21 | China Steel Corp | Evaluation Method for Impact Capacity of High Pressure Water Sprayer and Sprayer |
JP5834852B2 (ja) * | 2010-12-14 | 2015-12-24 | Jfeスチール株式会社 | 鋼板のスケール除去用ノズルおよび鋼板のスケール除去装置並びに鋼板のスケール除去方法 |
CN102266868B (zh) * | 2011-08-05 | 2013-06-19 | 河北钢铁股份有限公司邯郸分公司 | 一种减酸洗钢的生产方法 |
CN103191937B (zh) * | 2012-01-10 | 2014-12-03 | 宝山钢铁股份有限公司 | 热连轧机分段除鳞控制方法 |
CN103042055B (zh) * | 2012-12-27 | 2015-06-10 | 攀钢集团西昌钢钒有限公司 | 热轧钢坯粗轧除鳞方法 |
DE102013019698A1 (de) * | 2013-05-03 | 2014-11-06 | Sms Siemag Ag | Verfahren zur Herstellung eines metallischen Bandes |
EP3009205B1 (de) * | 2014-10-14 | 2018-12-26 | Primetals Technologies Germany GmbH | Berücksichtigung einer Referenzgeschwindigkeit beim Ermitteln einer Leitgeschwindigkeit |
JP6373416B2 (ja) * | 2015-02-09 | 2018-08-15 | 東芝三菱電機産業システム株式会社 | デスケーリングシステム及びその制御装置及び制御方法 |
JP6233614B2 (ja) * | 2016-01-27 | 2017-11-22 | Jfeスチール株式会社 | 熱延鋼帯の製造設備列および熱延鋼帯の製造方法 |
DE102016217562A1 (de) * | 2016-03-18 | 2017-09-21 | Sms Group Gmbh | Vorrichtung und Verfahren zum Entzundern eines bewegten Werkstücks |
US10245627B2 (en) | 2016-08-19 | 2019-04-02 | The Material Works, Ltd. | Width and speed control for sheet metal descaler and methods of using same |
RU2741033C1 (ru) * | 2017-09-28 | 2021-01-22 | ДжФЕ СТИЛ КОРПОРЕЙШН | Производственная установка для производства стального листа и способ производства стального листа |
EP3551354B1 (de) * | 2018-02-19 | 2021-09-08 | The Material Works, Ltd. | Breite-und geschwindigkeitssteuerung für blechentzunderer und verfahren zur verwendung davon |
DE102019216261A1 (de) * | 2019-07-02 | 2021-01-07 | Sms Group Gmbh | Verfahren zur Steuerung einer Kühleinrichtung in einer Walzstraße |
CN110538882B (zh) * | 2019-09-05 | 2021-07-09 | 首钢京唐钢铁联合有限责任公司 | 带钢翘头抑制装置及带钢精轧设备 |
CN113198857A (zh) * | 2021-04-14 | 2021-08-03 | 首钢集团有限公司 | 一种提高带钢上下表面质量一致性的方法 |
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-
2001
- 2001-03-03 DE DE10110324A patent/DE10110324A1/de not_active Withdrawn
-
2002
- 2002-02-19 TW TW091102763A patent/TW505549B/zh not_active IP Right Cessation
- 2002-02-23 AT AT02700270T patent/ATE280003T1/de active
- 2002-02-23 UA UA2003108944A patent/UA76744C2/uk unknown
- 2002-02-23 US US10/469,378 patent/US7181943B2/en not_active Expired - Lifetime
- 2002-02-23 CN CNB028059255A patent/CN1269584C/zh not_active Expired - Lifetime
- 2002-02-23 CZ CZ20032377A patent/CZ298608B6/cs not_active IP Right Cessation
- 2002-02-23 RU RU2003129452/02A patent/RU2281174C2/ru active
- 2002-02-23 DE DE50201360T patent/DE50201360D1/de not_active Expired - Lifetime
- 2002-02-23 WO PCT/EP2002/001927 patent/WO2002070157A1/de active IP Right Grant
- 2002-02-23 EP EP02700270A patent/EP1365870B1/de not_active Expired - Lifetime
- 2002-02-23 JP JP2002569317A patent/JP4136662B2/ja not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018215492A1 (de) * | 2018-09-12 | 2020-03-12 | Sms Group Gmbh | Verfahren zu Herstellung eines metallischen Gutes |
US11883868B2 (en) | 2018-09-12 | 2024-01-30 | Sms Group Gmbh | Method for producing a metal article |
Also Published As
Publication number | Publication date |
---|---|
JP2004529771A (ja) | 2004-09-30 |
TW505549B (en) | 2002-10-11 |
DE50201360D1 (de) | 2004-11-25 |
CN1269584C (zh) | 2006-08-16 |
DE10110324A1 (de) | 2002-09-05 |
JP4136662B2 (ja) | 2008-08-20 |
CZ298608B6 (cs) | 2007-11-21 |
US7181943B2 (en) | 2007-02-27 |
RU2003129452A (ru) | 2005-02-10 |
CN1494466A (zh) | 2004-05-05 |
UA76744C2 (uk) | 2006-09-15 |
RU2281174C2 (ru) | 2006-08-10 |
US20040069034A1 (en) | 2004-04-15 |
WO2002070157A1 (de) | 2002-09-12 |
ATE280003T1 (de) | 2004-11-15 |
CZ20032377A3 (cs) | 2004-02-18 |
EP1365870A1 (de) | 2003-12-03 |
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