CN1188234C - Method for producing continuous casting steel product and its device - Google Patents
Method for producing continuous casting steel product and its device Download PDFInfo
- Publication number
- CN1188234C CN1188234C CNB001082426A CN00108242A CN1188234C CN 1188234 C CN1188234 C CN 1188234C CN B001082426 A CNB001082426 A CN B001082426A CN 00108242 A CN00108242 A CN 00108242A CN 1188234 C CN1188234 C CN 1188234C
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- CN
- China
- Prior art keywords
- roller
- continuous casting
- strand
- roll
- along
- 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
- 238000009749 continuous casting Methods 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 title claims description 14
- 239000010959 steel Substances 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000000052 comparative effect Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract 1
- 230000000881 depressing effect Effects 0.000 description 12
- 238000005204 segregation Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 5
- 229910001208 Crucible steel Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
-
- 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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
-
- 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
-
- 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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1282—Vertical casting and curving the cast stock to the horizontal
-
- 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
- B21B1/46—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 metal immediately subsequent to continuous casting
- B21B1/463—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 metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/14—Soft reduction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The continuous casting operation uses a soft reduction action on the molten core of the cast material. The shaping section u only a pair of rollers (23) with the pull forces (Z) on the cast material as the control value. The comparison between nominal a actual values is used to set the ratio between the position of the paired rollers (23) and the peak (S) of the soft zone, so tha the cast strand is hardened throughout directly in the roller gap between the two rollers (24,25).
Description
Technical field
The present invention relates to a kind of method of producing continuous casting steel product, wherein this method has the step of the liquid core distortion that makes the continuous casting goods.In addition, the present invention relates to a kind of continuous casting steel device, it has a crystallizer, the guiding of arc ground and supporting and pulls out the device of steel billet and also can move so that carry out the mechanism of the small deformation of cast steel goods relative to it along the continuous casting orbital arrangement.Such small deformation is also referred to as " soft depressing ".
Background technology
In casting process, continuous casting billet solidifies by form firm base shell in crystallizer, so that solidify at the strand center position in process of billet withdrawal subsequently.In this case, the enrichment of alloying element has appearred solidifying front end.This has caused center segregation in the strand that solidifies fully, and center segregation is responsible for inhomogeneity in the strand cross section and inconsistent performance again.
In order advantageously to influence process of setting, people have known a kind of electromagnetic agitation method, wherein allow molten steel bear and flow.In the secondary cooling zone of continuous casting installation for casting or the stirring in the final area can cause spherical solidified structure and avoid center segregation.
The method of avoiding solidifying the front end segregation and improving center density as another kind is to adopt soft depressing, wherein rolling slightly strand that does not solidify fully as yet and liquid core.EP0603330B1 discloses a kind of method of producing cast steel steel billet and steel ingot, and it has a step that makes the liquid core distortion of cast steel goods.This deforming step is that carry out in a zone between the point that the point that has the ot-yet-hardened zone on the continuous casting track and cast steel goods solidify fully, between described zone is in and in the concentration of liquid in-core portion is 10% and 80% 2 corresponding to solidifying body.For this reason, proposed a kind of device, it has the inside and outside fan-shaped section of an arc roller channel section.The inner arc fan-shaped section can relative to outside fan-shaped section move.Also have the additional roll of rolling mill roll perpendicular to the deflector roll of fan-shaped section, they are depressed on the cast axis direction equally.
In addition, in quick pouring procedure, the thin liquid core of the length of self-control has caused high cell size and big segregation.Owing to reduced quality, this has limited the utilization to quick cast advantage.
Summary of the invention
Task of the present invention is, a kind of apparatus and method are provided, and especially compresses and produces the continuous casting goods that have even performance in the strand cross section by stoping segregation to improve core simultaneously.This method and apparatus especially can be used to the poring rate height and water the continuous casting installation for casting that dimensioning is adapted to the goods final size.
The technical solution of above-mentioned task aspect device is a kind of continuous casting of molten steel device, it has a crystallizer, be used for arc guiding and supporting and pull out the device of strand and also can relatively move along the setting of continuous casting track so that realize the mechanism of the small deformation of cast product, wherein, it is that 400 millimeters-1800 millimeters roller is right that the device of carrying out distortion has its roller diameter, described roller can be regulated according to the theoretical value of throwing power and the comparative result of actual value position and the relation between the liquid core end along the continuous casting track, makes solidifying directly of strand occur in the roll gap.
The technical solution of above-mentioned task aspect method is a kind of method of producing continuous casting steel product, wherein this method has a step that makes the distortion of continuous casting goods liquid core, it is characterized in that, determine that the throwing masterpiece is an actual value, described throwing power is according to the predetermined adjustment power of roller in the right roll gap of the roller of carrying out deforming step, deflection and material behavior value are tried to achieve, actual value and theoretical value are compared, wherein theoretical value is defined in the throwing power that obtains when liquid core end is located immediately in the roll gap, come regulator solution core end and roller to the relation between the position according to the deviation between actual value and the theoretical value, make solidifying directly of strand occur in the roll gap.
Basic ideas of the present invention are a kind of control methods, wherein throwing power is used as the adjusting parameter of coming the position of regulator solution core end according to the right position of the roller of execution on continuous casting track distortion and roll gap, so that liquid core end always is located immediately in the roll gap, promptly strand directly solidifies and thereby solidifies during deforming step in the zone between two rollers.Throwing power is the parameter of the predetermined adjustment power by roller, deflection and the decision of material behavior value.Theoretical value is the throwing power that obtains when being located immediately in the roll gap in liquid core end.When actual value deviation theory value, the situation between desirable liquid core end position and the roll gap is regulated by changing poring rate in first embodiment, and is by changing roller the position on strand to be regulated in a second embodiment.Then suggestion in the 3rd embodiment, the situation between liquid core end and the roll gap not only can be by poring rate parameters but also can be by regulating along the mode that it is right that the continuous casting track moves roller.In a word, can conclude the variation of curdled appearance and revised by the overheated change that makes pouring temperature or according to the change of the solidus temperature of the alloying fine adjustment of being realized.
Suggestion aspect device, the diameter of roller is 400 millimeters to 1800 millimeters.By selecting to compare big roller footpath with the common diameter of pinch roll, can obtain JUSTSOFT in angle and the mill length scope in more flat depressing and depress and can observe really throwing power and change.In addition, return at big volume and have the more flat mill length section of depressing the angle in crowded and guaranteed to reduce many than equilibrium because of the volume that squeezes in the end solidifying that returns of liquid core.This advantage can't guarantee in the right soft press down system of the many rollers of having of prior art.In addition, in known multiple roll system, can't eliminate two adjacent rollers between the phenomenon of final set appears, this equals not have the soft common final set of depressing.
According to device of the present invention, can be only by selecting big roller diameter with a roller to carrying out depressing of strand, described roller be to can finishing 12 millimeters-15 millimeters depress in the real work scope, and cause interior damage on strand.Solidifying front end regulates by depressing of gentleness little extensional takes place.Roller has determined that directly the soft gradient of depressing the district has also determined extension limit and decrement thus.
Along strand down, roller to after to be provided with a pinch roll right, can determine the numerical value of throwing power by the right torque of described pinch roll.
Description of drawings
From follow-up explanation, obtained other details of the present invention and advantage, wherein:
Fig. 1 shows and has first of right apparatus of the present invention of the roller that fixedly installs along the continuous casting track
Embodiment;
Fig. 2 shows the embodiment that has the right Fig. 1 device of roller selectively actuatable, that fixedly install;
Fig. 3 shows that have can be along the right second embodiment of the present invention of the roller that the continuous casting track moves, and above-mentioned roller is to down being arranged on front, aligning district along strand;
Fig. 4 show have one can be along the embodiment of the right Fig. 3 device of the roller that the continuous casting track moves, above-mentioned roller is to down being arranged on back, aligning district along strand;
Fig. 5 is the schematic diagram that combines the right the inventive method of pinch roll;
Fig. 6 be have roller to the side view of the right device of pinch roll;
Fig. 7 is the view along the A-A cross section of the device of Fig. 6;
Fig. 8 is the view along the B-B cross section of the device of Fig. 6;
Fig. 9 is the cross-sectional view with device of moving guide rail;
Figure 10 a, b are the right schematic diagrames of roller with two the big pony roll of difference footpaths.
The specific embodiment
Fig. 1-4 shows the different layouts of first, second embodiment of apparatus of the present invention.In Fig. 1, show conticaster 1 very simply, it mainly comprises a crystallizer 2 and an arc continuous casting track 3.Continuous casting track 3 is made of cooling zone 4 and the aligning of throwing subsequently district 5 usually.According to the present invention, soft depress process not by many rollers to or rolling-mill housing carry out, and just bear 6 by the roller of a fixed and arranged, described roller is made of upper and lower roll 7,86.Along strand down, after soft depress roller is to 6, be provided with an aligning with pinch roll to 9, it has upper and lower pinch roll 10,11.Show each roller seat 12,13 very simply.
In Fig. 2, be provided with counterpart member with same tag.First roller to 6 and pinch roll to 9 next door, first stationary roll on the continuous casting track to the front be provided with have corresponding pinch roll to 15 second roller to 14.By changing poring rate, can regulate the formation of liquid core end in the strand and realize that thus casting blank solidification always occurs between the roll gap, thereby realize best casting core density and stop the segregation of casting core.
Show the second embodiment of the present invention by means of Fig. 3 and 4.It can be a roller to 16, it can move along the continuous casting track 17 with a corresponding pinch roll.Such change in location with roller to 16 ', 17 ' illustrate.In the strand downstream, after roller is to 16, be provided with aligning district 18, it is made of 19,20 two pinch rolls.
Fig. 4 shows has removable roller to 21 embodiment, and described roller is to after being arranged in aligning district 18.Right with the 21 ' roller of representing to misplace.According to the present invention, mobile distance is controlled according to throwing power.It is same relevant with poring rate.Under the lower situation of poring rate, little displacement is with regard to enough (Fig. 3), under the high situation of poring rate, and displacement bigger (Fig. 4).
Fig. 5 has schematically illustrated in conjunction with pinch roll 22 control method.Be D1 at original thickness, the thickness after rolling is to be provided with a roller to 23 on the continuous casting goods of D2.Can come dancer rools right according to theoretic throat or cushion block.With regard to it regulates power P and displacement, can regulate right top roll of soft depress roller or lower roll, here schematically illustrate with 26.The required power Z of throwing is according to regulating that power P, cushion block and material parameter determine and calculating the follow-up pinch roll torque M d required to 22 roller 27,28.In addition, theoretical value is at liquid core end S or solidifies the throwing power that obtains when end is located immediately between roller 24,25 seams.In theoretical value and actual value not simultaneously, roller pair is not revised in 23 position concern by changing poring rate or changing roller with position between the liquid core.
Fig. 6 shows so soft structure of depressing support with side view.Soft depressing with pinch roll is arranged in the unit frame 29 23,22.Roller is born by two hydraulic cylinders 32,33 that act on the roll shaft 30,31 23 the displacement and the adjusting of power, and this A-A sectional view by Fig. 7 shows.Represent the continuous casting goods with 34, with the 35 liquid core pressing zones that are illustrated between the roller 24,25.Fig. 8 shows the B-B cross section of Fig. 6.Two pinch rolls are realized by two hydraulic cylinders 36,37 27,28 adjusting. Roller 27,28 is furnished with driving mechanism 38,39 respectively, and their driving moment Md is as the yardstick of throwing power Z.According to second embodiment, support 29 can be with soft depress roller to moving along the continuous casting track together 23,22 with pinch roll.As shown in Figure 9, this realizes that by roller 40,41 described roller is arranged on the both sides of support 29.Be provided with moving guide rail 42,43 along the continuous casting track, the roller that links to each other with support can move in described guide rail.
Showing diameter by Figure 10 a, 10b is the roller that 400 millimeters roller and diameter are 1500 millimeters, can core controlledly be compressed.According to formula Id=(d/2* Δ h), wherein Id is a rolling back length, and d is a diameter, and Δ h is a drafts, and under the constant situation of Δ h, along with the increase of d, the length after rolling increases, and the angle α that depresses in the mill length scope then diminishes.Bigger mill length and less angle [alpha] mean the smooth less and long reduction section of extension that angle and strand core solidify front end of depressing, and this helps the core compression.Gratifying core compression can be the roller realization of 400-1800 millimeter by diameter.
By the method and apparatus that is proposed, can make steel ingot and steel billet all bear soft depressing, the core of shaped blank, rectangular bloom, square base or round billet is compressed.Described device can be used in the new equipment, can equip existing equipment again simultaneously.
Claims (9)
1. method of producing continuous casting steel product, wherein this method has a step that makes the distortion of continuous casting goods liquid core, it is characterized in that, determine that throwing power (Z) is as actual value, described throwing power be the roller of carrying out deforming step to the roll gap of (23) in according to the predetermined adjustment power (P) of roller, deflection (Δ D) and material behavior value are tried to achieve, actual value and theoretical value are compared, wherein theoretical value is defined in the throwing power that obtains when liquid core end (S) is located immediately in the roll gap, come regulator solution core end and roller to the relation between the position according to the deviation between actual value and the theoretical value, make solidifying directly of strand occur in the roll gap.
2. the method for claim 1 is characterized in that, according to the position of poring rate regulator solution core end.
3. the method for claim 1 is characterized in that, by making roller to moving along the continuous casting track, comes dancer rools to the position.
4. one kind is used to implement the continuous casting of molten steel device of method according to claim 1, it has a crystallizer, be used for arc guiding and supporting and pull out the device of strand and also can relatively move along the setting of continuous casting track so that realize the mechanism of the small deformation of cast product, it is characterized in that, it is that 400 millimeters-1800 millimeters roller is to (6 that the device of carrying out distortion has its roller diameter, 14,16,21), its central roll can be regulated according to the theoretical value of throwing power and the comparative result of actual value position and the relation between the liquid core end along the continuous casting track, makes solidifying directly of strand occur in the roll gap.
5. device as claimed in claim 4 is characterized in that, is provided with a pinch roll to (9,15,17) in the right strand downstream of roller, and wherein the theoretical value of throwing power can be determined by the torque of pinch roll.
6. device as claimed in claim 4 is characterized in that, roller is fixedly mounted on the continuous casting track (9) (6) and pinch roll.
7. device as claimed in claim 6 is characterized in that, also along strand down at first roller to (6) preceding second roller that is provided with to (14), these two rollers are to selectively operating according to liquid core end position.
8. device as claimed in claim 4 is characterized in that, roller can move along the continuous casting track (17) (16,21) and pinch roll.
9. device as claimed in claim 8 is characterized in that, can be according to the poring rate dancer rools to the displacement along the continuous casting track.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19921296A DE19921296A1 (en) | 1999-05-07 | 1999-05-07 | Method and device for the production of continuously cast steel products |
| DE19921296.1 | 1999-05-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1273148A CN1273148A (en) | 2000-11-15 |
| CN1188234C true CN1188234C (en) | 2005-02-09 |
Family
ID=7907448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001082426A Expired - Fee Related CN1188234C (en) | 1999-05-07 | 2000-04-30 | Method for producing continuous casting steel product and its device |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1050355B1 (en) |
| JP (1) | JP2000326060A (en) |
| KR (1) | KR100707785B1 (en) |
| CN (1) | CN1188234C (en) |
| AT (1) | ATE315449T1 (en) |
| BR (1) | BR0002396A (en) |
| CA (1) | CA2307817A1 (en) |
| DE (2) | DE19921296A1 (en) |
| MX (1) | MXPA00004353A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100518327B1 (en) * | 2002-12-23 | 2005-10-04 | 주식회사 포스코 | A Method of Startup Procedure of Strip in the Twin Roll Strip Casting Process |
| KR20140147883A (en) * | 2012-05-24 | 2014-12-30 | 신닛테츠스미킨 카부시키카이샤 | Continuous casting method for slab |
| EP3144080B1 (en) * | 2014-05-14 | 2020-02-05 | Nippon Steel Corporation | Continuous casting method for slab |
| US10618107B2 (en) | 2016-04-14 | 2020-04-14 | GM Global Technology Operations LLC | Variable thickness continuous casting for tailor rolling |
| CN109622630B (en) * | 2019-01-03 | 2020-04-24 | 包头铝业有限公司 | On-line adjusting method for rolling technological parameters of heat-resistant aluminum alloy rod |
| CN110523937B (en) * | 2019-09-06 | 2021-07-23 | 首钢集团有限公司 | Pressing method and device |
| CN112355262B (en) * | 2020-11-09 | 2021-10-15 | 湖南工程学院 | Control device for slab continuous casting dynamic soft reduction |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56151147A (en) * | 1980-04-24 | 1981-11-24 | Nippon Steel Corp | Method for detecting leading end position of unsolidified part of continuously cast ingot |
| JPS60257958A (en) * | 1984-06-05 | 1985-12-19 | Sumitomo Metal Ind Ltd | Detection of abnormality in continuous casting |
| CS267462B1 (en) * | 1987-06-16 | 1990-02-12 | Svoboda Rostislav | Equipment for material's zone smelting |
| JPH0745096B2 (en) * | 1988-04-19 | 1995-05-17 | 住友金属工業株式会社 | Continuous casting method |
| JPH06510486A (en) * | 1991-09-12 | 1994-11-24 | アルベデイ，ジヨバンニ | Method and apparatus for producing billets and blooms from continuous cast steel exhibiting high or very high quality |
| DE4138740A1 (en) * | 1991-11-26 | 1993-05-27 | Schloemann Siemag Ag | METHOD AND DEVICE FOR CONTINUOUSLY casting slabs or blocks |
| AT401744B (en) * | 1993-10-14 | 1996-11-25 | Voest Alpine Ind Anlagen | METHOD AND SYSTEM FOR CONTINUOUS CASTING |
| JP3427546B2 (en) * | 1995-01-30 | 2003-07-22 | 大同特殊鋼株式会社 | Dissimilar steel continuous casting method |
| DE19639297C2 (en) * | 1996-09-25 | 2000-02-03 | Schloemann Siemag Ag | Method and device for high-speed continuous casting plants with a reduction in strand thickness during solidification |
| JP3119203B2 (en) * | 1997-06-27 | 2000-12-18 | 住友金属工業株式会社 | Unsolidified rolling method of slab |
| GB9815798D0 (en) * | 1997-09-18 | 1998-09-16 | Kvaerner Metals Cont Casting | Improvements in and relating to casting |
-
1999
- 1999-05-07 DE DE19921296A patent/DE19921296A1/en not_active Withdrawn
-
2000
- 2000-04-22 DE DE50012037T patent/DE50012037D1/en not_active Expired - Lifetime
- 2000-04-22 AT AT00108747T patent/ATE315449T1/en not_active IP Right Cessation
- 2000-04-22 EP EP00108747A patent/EP1050355B1/en not_active Expired - Lifetime
- 2000-04-30 CN CNB001082426A patent/CN1188234C/en not_active Expired - Fee Related
- 2000-05-01 JP JP2000132334A patent/JP2000326060A/en active Pending
- 2000-05-04 MX MXPA00004353A patent/MXPA00004353A/en unknown
- 2000-05-05 BR BR0002396-5A patent/BR0002396A/en not_active Application Discontinuation
- 2000-05-06 KR KR1020000024168A patent/KR100707785B1/en not_active IP Right Cessation
- 2000-05-08 CA CA002307817A patent/CA2307817A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000326060A (en) | 2000-11-28 |
| KR20000077170A (en) | 2000-12-26 |
| CA2307817A1 (en) | 2000-11-07 |
| DE19921296A1 (en) | 2000-11-09 |
| BR0002396A (en) | 2001-01-02 |
| CN1273148A (en) | 2000-11-15 |
| MXPA00004353A (en) | 2002-03-12 |
| KR100707785B1 (en) | 2007-04-13 |
| EP1050355B1 (en) | 2006-01-11 |
| EP1050355A2 (en) | 2000-11-08 |
| DE50012037D1 (en) | 2006-04-06 |
| EP1050355A3 (en) | 2001-03-28 |
| ATE315449T1 (en) | 2006-02-15 |
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