EP1001856B1 - VERFAHREN ZUR HERSTELLUNG VON GESCHWEISSTEN ROHREN AUS Cu UND Cu-LEGIERUNGEN - Google Patents
VERFAHREN ZUR HERSTELLUNG VON GESCHWEISSTEN ROHREN AUS Cu UND Cu-LEGIERUNGEN Download PDFInfo
- Publication number
- EP1001856B1 EP1001856B1 EP98943664A EP98943664A EP1001856B1 EP 1001856 B1 EP1001856 B1 EP 1001856B1 EP 98943664 A EP98943664 A EP 98943664A EP 98943664 A EP98943664 A EP 98943664A EP 1001856 B1 EP1001856 B1 EP 1001856B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- pipe
- casting
- rolling
- steps
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 229910000881 Cu alloy Inorganic materials 0.000 title claims abstract description 16
- IHPYMWDTONKSCO-UHFFFAOYSA-N 2,2'-piperazine-1,4-diylbisethanesulfonic acid Chemical compound OS(=O)(=O)CCN1CCN(CCS(O)(=O)=O)CC1 IHPYMWDTONKSCO-UHFFFAOYSA-N 0.000 title 1
- 239000007990 PIPES buffer Substances 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 46
- 238000005266 casting Methods 0.000 claims abstract description 29
- 238000003466 welding Methods 0.000 claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- 238000005098 hot rolling Methods 0.000 claims abstract description 11
- 238000005097 cold rolling Methods 0.000 claims abstract description 5
- 238000007493 shaping process Methods 0.000 claims abstract 7
- 238000003860 storage Methods 0.000 claims abstract 5
- 238000009434 installation Methods 0.000 claims abstract 4
- 238000005096 rolling process Methods 0.000 claims abstract 4
- 238000001816 cooling Methods 0.000 claims abstract 3
- 239000000463 material Substances 0.000 claims description 6
- 238000000137 annealing Methods 0.000 claims description 4
- 238000009966 trimming Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000005554 pickling Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000002243 precursor Substances 0.000 claims 2
- YTAHJIFKAKIKAV-XNMGPUDCSA-N [(1R)-3-morpholin-4-yl-1-phenylpropyl] N-[(3S)-2-oxo-5-phenyl-1,3-dihydro-1,4-benzodiazepin-3-yl]carbamate Chemical compound O=C1[C@H](N=C(C2=C(N1)C=CC=C2)C1=CC=CC=C1)NC(O[C@H](CCN1CCOCC1)C1=CC=CC=C1)=O YTAHJIFKAKIKAV-XNMGPUDCSA-N 0.000 claims 1
- 244000309464 bull Species 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 3
- 238000010924 continuous production Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0807—Tube treating or manipulating combined with, or specially adapted for use in connection with tube making machines, e.g. drawing-off devices, cutting-off
- B21C37/0811—Tube treating or manipulating combined with, or specially adapted for use in connection with tube making machines, e.g. drawing-off devices, cutting-off removing or treating the weld bead
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/003—Rolling non-ferrous metals immediately subsequent to continuous casting, i.e. in-line rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/083—Supply, or operations combined with supply, of strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/30—Finishing tubes, e.g. sizing, burnishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B2003/005—Copper or its alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
- Y10T29/49991—Combined with rolling
Definitions
- the invention relates to a method for producing welded tubes Copper and copper alloys in a combined production line consisting of a primary material casting plant, a hot rolling mill, a pipe forming and Welding line and a pulling device for the welded pipe.
- Seamless pipes are, for example, via the process routes: solid continuous casting, Extrusion, cold vocationalage and drawing are made, the cold vocational also can be omitted. It is also known to use the solid strand in one Hole punching, punching cold and then to the finished dimension pull. Also worth mentioning are processes in which a hollow strand is cast, which is then subjected to the drawing process after the cold vocationalage. All described methods have disadvantages; high extrusion results Manufacturing costs, the tube qualities are not sufficient for hollow continuous casting. Seamless pipes also have poor wall thickness tolerances.
- Welded pipes are usually made from continuously cast slabs manufactured, which are pre-rolled in hot-plate mills, then cold-rolled, be longitudinally divided and welded. Following the welding process, a Drawing the pipes using conventional drawing methods.
- a disadvantage of the Pipe welding processes are the high strip manufacturing cost that pipe manufacturing make uneconomical.
- the belt is manufactured using various processes. It is common Continuous casting of slabs, hot rolling of the slabs, milling of the Surfaces and subsequent cold rolling, the coiling of the cold rolled Tape and subsequent slitting into strips for further processing are fed.
- the advantage of the cold strip produced in this way is the high level achievable capacities of more than 100,000 t / a with good surface quality.
- the discontinuous process and the high production costs are disadvantageous.
- Another method suggests casting thin slabs that are hot rolled make broadband unnecessary. Following this, the Surfaces of the strip are milled before the strip is cold rolled, coated and in strips is divided lengthways. This process can be carried out continuously, medium capacities of less than 100,000 t / a can be achieved with a good surface quality. Also this method has the disadvantage that the manufacturing costs are too high.
- a third method is known as the so-called high reduction method.
- the strip in graphite molds with a casting speed v 1 m / min cast, the surfaces are milled, the tape is with high stitch decrease cold rolled, coiled and cut lengthways into strips. This process can be continuous operated, the surface qualities are good. Disadvantages of the procedure are the small capacities around 10,000 t / a with high manufacturing costs.
- the aim of the present invention is to provide an improved process for the production of inexpensive pipes with high dimensional accuracy and surface quality To create copper and copper alloys on the rolled strip longitudinally welded pipes is processed.
- the profitability also for the production of small to large quantities (between 10,000 to 100,000 t / a) sought.
- the method steps according to the invention are in the characterizing part of the Claim 1 described by the sequence of process steps a) to j). It has been found that when casting a supporting strip in the specified Dimension range and the intended casting speed Tailor-made production of the strips is possible, so that a slitting of a pre-rolled sheet becomes unnecessary.
- the strips have good surface quality and cheap material values at low manufacturing costs.
- the casting of the supporting strip can according to special features of the invention either on a belt caster or on a casting wheel. Both Casting processes are characterized by high casting speeds and are therefore for the economical production of the strips with the corresponding Dimensions particularly suitable for immediate further processing, whereby Casting wheels have so far only been used in wire production.
- Hot rolling of the pre-strip takes place between 600 ° C and 900 ° C, so that makes it possible Process to produce grain sizes in the material of 30-40 ⁇ m, which according to Cold rolling better conditions when forming the strips into welding tubes Offer.
- the descaling of the hot-rolled pre-strip can be done in line with conventional ones Descaling processes, for example by chemical pickling.
- a known one can be used to pull the longitudinal seam tube Drawing process with the steps decoiling, drum drawing or continuous Pull straight, if necessary intermediate annealing (with the soft and soft grades Semi-hard), finish drawing and soft annealing if necessary (e.g. at Heat exchanger tubes) are used.
- the inventive method is advantageous because it is in a continuous Process flow is economically capable of welding copper pipes and tubes made of copper alloys in low to high capacity (10,000 to 100,000 t / a) to manufacture, with internally finned pipes even down to 1000 t / a and less.
- the continuous process sequence using casting machines with very high casting speeds on the one hand enables the high capacity without on the other hand negatively affect the quality of the pipes.
- the surface of the cast tape corresponds despite the absence of that in the known prior art intended milling of the belt surface the conditions for Precision cold strips for pipe production.
- the one that arises during hot rolling Grain sizes from 30 to 40 ⁇ m enable more favorable conditions for molding of the strips into welding tubes than was previously the case with soft (annealed) material was possible.
- the method according to the invention is used for the first time in practice created a useful method for producing welded non-ferrous metal pipes, the due to its high capacity, flexibility and low cost the does not have the disadvantages described in the prior art.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Metal Rolling (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Arc Welding In General (AREA)
- Continuous Casting (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19734780A DE19734780C1 (de) | 1997-08-06 | 1997-08-06 | Verfahren zur Herstellung von geschweißten Rohren aus Cu und Cu-Legierungen |
| DE19734780 | 1997-08-06 | ||
| PCT/DE1998/001898 WO1999007491A1 (de) | 1997-08-06 | 1998-07-01 | VERFAHREN ZUR HERSTELLUNG VON GESCHWEISSTEN ROHREN AUS Cu UND Cu-LEGIERUNGEN |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1001856A1 EP1001856A1 (de) | 2000-05-24 |
| EP1001856B1 true EP1001856B1 (de) | 2002-11-27 |
Family
ID=7838657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98943664A Expired - Lifetime EP1001856B1 (de) | 1997-08-06 | 1998-07-01 | VERFAHREN ZUR HERSTELLUNG VON GESCHWEISSTEN ROHREN AUS Cu UND Cu-LEGIERUNGEN |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US6401323B1 (zh) |
| EP (1) | EP1001856B1 (zh) |
| JP (1) | JP2001513443A (zh) |
| KR (1) | KR20010022528A (zh) |
| CN (1) | CN1100629C (zh) |
| AT (1) | ATE228403T1 (zh) |
| AU (1) | AU735019B2 (zh) |
| CA (1) | CA2299372C (zh) |
| DE (2) | DE19734780C1 (zh) |
| ES (1) | ES2183414T3 (zh) |
| ID (1) | ID24050A (zh) |
| PL (1) | PL187804B1 (zh) |
| TW (1) | TW369441B (zh) |
| WO (1) | WO1999007491A1 (zh) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2196718T3 (es) * | 1998-09-09 | 2003-12-16 | Sms Demag Ag | Procedimiento para la fabricacion de tubos soldados de cobre. |
| DK1777305T3 (da) * | 2004-08-10 | 2011-01-03 | Mitsubishi Shindo Kk | Støbning af kobberbaselegering med raffinerede krystalkorn |
| JP2006341276A (ja) * | 2005-06-09 | 2006-12-21 | Jp Steel Plantech Co | 連続圧延方法及び連続圧延設備 |
| DE102005031805A1 (de) * | 2005-07-07 | 2007-01-18 | Sms Demag Ag | Verfahren und Fertigungslinie zum Herstellen von Metallbändern aus Kupfer oder Kupferlegierungen |
| ATE498699T1 (de) * | 2005-09-30 | 2011-03-15 | Mitsubishi Shindo Kk | Aufgeschmolzene und erstarrte kupferlegierung die phosphor und zirkon enthält |
| DE102007022927A1 (de) * | 2006-05-26 | 2007-12-20 | Sms Demag Ag | Vorrichtung und Verfahren zum Herstellen eines Metallbandes durch Stranggießen |
| DE102007022931A1 (de) * | 2006-05-26 | 2007-11-29 | Sms Demag Ag | Verfahren und Vorrichtung zum Herstellen eines Metallbandes durch Stranggießen |
| CN101737565B (zh) * | 2008-11-04 | 2011-12-28 | 肖玉佳 | 一种制造铜铝复合管的方法 |
| CN101767123A (zh) * | 2009-12-29 | 2010-07-07 | 大连通发新材料开发有限公司 | 生产铝包铜管的工艺及设备 |
| CN102000716B (zh) * | 2010-11-30 | 2013-05-08 | 大连三高科技发展有限公司 | 大径直缝焊管生产线 |
| CN103591118B (zh) * | 2013-11-19 | 2015-12-02 | 无锡苏嘉法斯特汽车零配件有限公司 | 传动轴管的制造工艺 |
| CN104148437A (zh) * | 2014-06-29 | 2014-11-19 | 柳州美纳机械有限公司 | 双金属复合管的生产方法 |
| CN106216955B (zh) * | 2016-08-18 | 2018-01-23 | 无锡苏嘉法斯特汽车零配件有限公司 | 特殊钢传动轴管制造工艺 |
| CN106216957B (zh) * | 2016-08-18 | 2018-01-05 | 无锡苏嘉法斯特汽车零配件有限公司 | 汽车扭力梁用焊接钢管的制造方法 |
| CN106216956B (zh) * | 2016-08-18 | 2018-03-30 | 无锡苏嘉法斯特汽车零配件有限公司 | 汽车传动轴管的制造方法 |
| CN106216959B (zh) * | 2016-08-18 | 2018-03-30 | 无锡苏嘉法斯特汽车零配件有限公司 | 汽车车架用焊接钢管的制造方法 |
| CN107188394B (zh) * | 2017-07-25 | 2019-12-10 | 成都光明派特贵金属有限公司 | 玻璃出料管拉拔模组、玻璃出料管制造方法及玻璃出料管 |
| CN110681716A (zh) * | 2019-09-18 | 2020-01-14 | 东莞市竹菱铜业有限公司 | 一种铍青铜管制备方法 |
| CN114289544A (zh) * | 2021-12-31 | 2022-04-08 | 武汉市博钛新材料科技有限公司 | 一种高频感应钛焊管的快速缩径生产装置及工艺 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3858785A (en) * | 1971-12-30 | 1975-01-07 | Olin Corp | Apparatus for making heat exchanger tube |
| LU81564A1 (fr) * | 1979-07-31 | 1981-03-24 | Liege Usines Cuivre Zinc | Procede de fabrication de tubes,tubes obtenus par ce procede et leur utilisation dans des condenseurs et des echangeurs de chaleur |
| JPS58168429A (ja) * | 1982-03-30 | 1983-10-04 | Sumitomo Metal Ind Ltd | 溶接製管設備列 |
| JPS60102224A (ja) * | 1983-11-09 | 1985-06-06 | Hitachi Ltd | 角パイプの連続製造方法及び装置 |
-
1997
- 1997-08-06 DE DE19734780A patent/DE19734780C1/de not_active Expired - Fee Related
-
1998
- 1998-07-01 ES ES98943664T patent/ES2183414T3/es not_active Expired - Lifetime
- 1998-07-01 PL PL33844198A patent/PL187804B1/pl not_active IP Right Cessation
- 1998-07-01 US US09/485,285 patent/US6401323B1/en not_active Expired - Fee Related
- 1998-07-01 EP EP98943664A patent/EP1001856B1/de not_active Expired - Lifetime
- 1998-07-01 CN CN98807906A patent/CN1100629C/zh not_active Expired - Fee Related
- 1998-07-01 AU AU91518/98A patent/AU735019B2/en not_active Ceased
- 1998-07-01 DE DE59806458T patent/DE59806458D1/de not_active Expired - Fee Related
- 1998-07-01 JP JP2000507069A patent/JP2001513443A/ja active Pending
- 1998-07-01 ID IDW20000223A patent/ID24050A/id unknown
- 1998-07-01 CA CA002299372A patent/CA2299372C/en not_active Expired - Fee Related
- 1998-07-01 KR KR1020007001117A patent/KR20010022528A/ko not_active Application Discontinuation
- 1998-07-01 WO PCT/DE1998/001898 patent/WO1999007491A1/de not_active Application Discontinuation
- 1998-07-01 AT AT98943664T patent/ATE228403T1/de not_active IP Right Cessation
- 1998-07-27 TW TW087112251A patent/TW369441B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2299372C (en) | 2006-06-27 |
| DE19734780C1 (de) | 1998-12-10 |
| AU9151898A (en) | 1999-03-01 |
| DE59806458D1 (de) | 2003-01-09 |
| KR20010022528A (ko) | 2001-03-15 |
| US6401323B1 (en) | 2002-06-11 |
| PL338441A1 (en) | 2000-11-06 |
| TW369441B (en) | 1999-09-11 |
| WO1999007491A1 (de) | 1999-02-18 |
| CN1265612A (zh) | 2000-09-06 |
| JP2001513443A (ja) | 2001-09-04 |
| AU735019B2 (en) | 2001-06-28 |
| ID24050A (id) | 2000-07-06 |
| EP1001856A1 (de) | 2000-05-24 |
| ES2183414T3 (es) | 2003-03-16 |
| PL187804B1 (pl) | 2004-10-29 |
| ATE228403T1 (de) | 2002-12-15 |
| CA2299372A1 (en) | 1999-02-18 |
| CN1100629C (zh) | 2003-02-05 |
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