CN1135381A - Universal frame set for rolling continuously-casted coarse structural section and method thereof - Google Patents
Universal frame set for rolling continuously-casted coarse structural section and method thereof Download PDFInfo
- Publication number
- CN1135381A CN1135381A CN96104202A CN96104202A CN1135381A CN 1135381 A CN1135381 A CN 1135381A CN 96104202 A CN96104202 A CN 96104202A CN 96104202 A CN96104202 A CN 96104202A CN 1135381 A CN1135381 A CN 1135381A
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- CN
- China
- Prior art keywords
- universal frame
- frame group
- edging mill
- universal
- omnipotent
- 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.)
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Classifications
-
- 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
- B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/088—H- or I-sections
-
- 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
- B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/14—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 structural sections, i.e. work of special cross-section, e.g. angle steel in a non-continuous process, i.e. at least one reversing stand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
- B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
-
- 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
- B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/088—H- or I-sections
- B21B1/0886—H- or I-sections using variable-width rolls
-
- 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
- B21B1/466—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 non-continuous process, i.e. the cast being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B2013/003—Inactive rolling stands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/028—Variable-width rolls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The present invention relates to the universal mill for rolling continuous cast preform sections comprises a reversing universal stand on the ingoing side, a second universal finishing stand on the outgoing side with an intermediate stand between these two stands and a universal stand (UE) preceding the universal train (UR-HE-UF), having driven vertical rolls (2) and idler horizontal rolls (3).
Description
The present invention relates to a kind of universal frame group that is used for rolling continuously-casted coarse structural section, this universal frame group comprises first universal frame, second universal frame that is located at the port of export and the edging mill that is located between these two universal frames that are located at arrival end and reversible operation, wherein, concerning the universal frame group, before one edging mill is arranged on first universal frame, and the universal frame of its port of export is designed to omnipotent finishing stand.
European patent EP 0265757 discloses a kind of universal frame group of the above-mentioned type.Consider it be not to be deformed into section bar by steel ingot, but when using the continuous casting section bar of the approximate profile shapes thereafter of its cross section at once, can avoid adopting conventional heavy pony roughing mill with many bloom passes, prior art considers to utilize rough section bar, the web of these section bar both sides has had reinforcement effect, and is the figure of eight.
First universal frame in some universal frames that are assembled into small-sized roll stacks is introduced this section bar in suggestion immediately, utilizes two universal frames and an edging mill in a plurality of reversible passages, and this section rolling is become final section bar.Have only when rough section bar and compare with finished section bar when having obviously big final size difference, just in small-sized rolling group front one edging mill is set, enter the operation of rolling, this edging mill is equipped with the complete roll of dual roll type, and reversible drives in case of necessity.Also can edging mill of being with roller for sleeping in of affix in this dual roll type edging mill.
The result shows that when two edges of a wing that occur rough section bar in the rough profile height process of bracket end rolling on edge produced thickening extrusion problem, rough section bar is introduced the universal frame group can make troubles.Therefore, task of the present invention is that improvement is used for the universal frame group with preposition edging mill of rolling continuous casting section bar, thereby need not supplementary bay, can avoid the intermarginal cavity of rough section bar both wings that out of contior extrusion or closure take place, can reduce the edge of a wing height of continuous casting section bar thus greatly.
For achieving the above object, by the present invention suggestion, be designed to have the crouch universal frame of roller of driven edger roll and servo-actuated with being arranged on edging mill before the universal frame group.
Adopt the rough section bar of a universal frame rolling on edge, the roller for sleeping in that can embed cavity when rough profile height is rolled is used for avoiding the closed edge of a wing thickness that also reduces simultaneously of cavity.Rough section bar will enter first universal frame in the universal frame group smoothly; The entrance section of rough transverse section of section material and universal frame group adapts and is easy to realize.Because have only edger roll to be driven, so edging mill is simple relatively; The advantage proof of this frame is introduced into alternative dual roll type edging mill or two edging mills are effective.Additional advantages of the present invention are: in the process of the rolling rough section bar with big stile height (Stehhohe) and less by comparison web thickness of omnipotent edging mill, it can be supported to prevent bending and expansion.Tightly guide or reduce the bending that rough section bar web can be avoided web minutely by roller for sleeping in.In addition,, can in a passage, realize the big rolling on edge amount of rough profile height, therefore, not only can make required road number of times minimum, also can make various rough section bar mold numbers further reduce to minimum by adjusting roller for sleeping in.
According to another suggestion of the present invention, the inclination angle that makes omnipotent edging mill roller for sleeping in is in the tilt angle ranges of the rough section bar edge of a wing, and is perhaps littler.When adopting such inclination angle, the rolling of follow-up rolling machine frame is easy to interlock and imports rough section bar, and the edge of a wing is outwards to be provided with in these frames.
The diameter of omnipotent edging mill roller for sleeping in preferably is less than the edger roll diameter.By this measure, guarantee that the contact-making surface that crouches between roller and rough section bar is as far as possible little.
The profile of omnipotent edging mill roller for sleeping in and/or edger roll is cylindrical on whole body of roll width.Another selection scheme is that the profile of omnipotent edging mill roller for sleeping in and/or edger roll is provided with the inclination angle of outside variation.By the edger roll conical head that outwards comes to a point gradually, can increase the rough profile height of rolling on edge and act on power on the web; In addition, improved the condition of rough section bar being introduced follow-up universal frame, because the edger roll of this universal frame equally also has the conical head of a similar shape.
In further design of the present invention, advise that the roller for sleeping in of omnipotent edging mill can be adjusted its width by different cavity size.Obviously, can make it be fit to different web heights with such roll adjusted, thereby can enter omnipotent edging mill basically loosely.
The adjustment of roller width of crouching can realize by the spacing dividing plate simply, and, also can adjust the roller width that crouches by machine driving or hydraulic transmission method.
In the further scheme of the present invention, the middle barrel diameter of omnipotent edging mill roller for sleeping in is less than body of roll outward flange diameter.By this measure, can prevent from greatly web sharply to be thickeied, and cause when web contacts with roller for sleeping in, producing big horizontal force therefrom owing to the rolling on edge amount of the rough profile height between edger roll.If it is littler than its outward flange diameter that the middle barrel diameter of roller for sleeping in is designed to, then can reduce the contact area of roller for sleeping in and rough section bar web.
Omnipotent edging mill not only can be arranged to a line with the universal frame group, and is set on the parallel roll line before the universal frame group lateral offset relatively.
Universal frame group with reversible operation by the present invention, method by rough section rolling finished section bar is characterised in that: carry out web height in first upset pass of universal mill frame, reach the rolling of edge of a wing thickness and/or web thickness in case of necessity, and utilize first universal frame and edging mill following closely, preferably pass through these three frames each three times, and in rolling pass thereafter, use universal frame and edging mill in the universal frame group to carry out a upset pass at least, then utilize whole universal frame group to carry out a finishing pass.
With moving this rolling-mill housing arrangement by universal frame group of the present invention and the method for being advised, become finished section bar economical especially rough section rolling, and accurately.Wherein, be used for making the size of casting mold material to be complementary, be beneficial to the section bar of rolling support and similar cross-section shape in the universal frame group of postposition by omnipotent edging mill of the present invention.The uncontrollable extrusion or the closure of the cavity that rough section bar both wings are intermarginal significantly reduce, and no longer occur, use above-mentioned omnipotent edging mill, can make so rough section bar adapt to the rolling pass of universal frame group, the cross section of it and rough section bar has very big difference.
One embodiment of the invention now are described below as shown in drawings:
Figure 1 shows that a rolling-mill housing layout drawing, wherein, before the omnipotent edging mill of representing with UE by the present invention was arranged on an independent roll line of universal frame, above-mentioned universal frame group was made up of the first universal frame UR, edge of a wing edging mill HE and omnipotent finishing stand UF.The omnipotent edging mill that is used for the rough section bar 1 of roughing is equipped with driven edger roll 2 and not driven roller 3 for sleeping in, and reversible drives operation in case of necessity.Shown in accompanying drawing the latter half, can change the body of roll width of the roller 3 that crouches by spacing dividing plate 4; The inclination angle of roller side 5 for sleeping in and the angle of the flank 6 of rough section bar are complementary fully, and keep the cavity of rough section bar 1 to be in open configuration in the rolling on edge process, and rough like this section bar just can enter the first universal frame UR without a doubt.Equally, by omnipotent edging mill figure as can be known, the middle barrel diameter of the roller 3 that crouches is less than its outward flange diameter, and the contact-making surface of the web of therefore crouch roller and rough section bar 1 diminishes.Like this, can make the power minimum that when the thick section bar 1 of rolling on edge, may act on the roller that crouches by edger roll 2.
When roller for sleeping in will be avoided at rolling on edge, the cavity closed-ended question occurring, reduce the thickness on the edge of a wing possibly.Big rolling on edge amount also can cause web thickness to strengthen, this result with by reduce the just in time counterproductive of waist limit thickness with roller for sleeping in.
Its rolling in universal frame group UR, HE, UF of the rough section bar of roughing is undertaken by common mode in omnipotent edging mill.Wherein, on the edge of a wing edging mill HE behind every universal frame UR, the rolling employing multi-pass reversible on the inclination edge of a wing is carried out, and in last rolling pass of omnipotent finishing stand, in to edge of a wing straightening, produce finished section bar.
In Fig. 2, omnipotent edging mill and universal frame group are arranged to a line, and have provided the rolling order of finished section bar simultaneously.As seen from the figure, continuously-casted coarse structural section is roughing in omnipotent edging mill UE at first, and simultaneously the rolling edge of a wing and web reduce it.For a final pass at omnipotent edging mill UE, that is thereafter with in the rolling pass that the first universal frame UR and edge of a wing edging mill HE are arranged, further rolling this section bar, can make this rough section bar directly enter the first universal frame UR and edge of a wing edging mill HE thereafter, and in reversible passage, rough section bar distortion is reduced, four-pass is in opening-wide state during through omnipotent edging mill, that is, do not have size to reduce, only utilized edge of a wing edging mill HE and the 10,000 frame UR.Then, in the end in the passage, used the whole frames among the universal frame group UR-HE-UF,, formed the final effective dimensions of section bar so that in omnipotent finishing stand UF.
, also be suitable for forming the pony roughing mill of group continuously as pony roughing mill by omnipotent edging mill of the present invention, can consider to be used for rolling little continuously-casted coarse structural section for this continuous group near final size by a plurality of universal frames and edge of a wing edging mill.
Claims (12)
1. universal frame group that is used for rolling continuously-casted coarse structural section, this universal frame group is by first universal frame that is located at the operation of arrival end and reversible, one second universal frame and edging mill that is arranged between these two universal frames that is located at the port of export formed, wherein being arranged on the preceding edging mill of first universal frame is positioned at before the universal frame group, and the universal frame of the port of export is designed to the universal roughing mill frame, it is characterized in that: the edging mill that is arranged on universal frame group (UR-HE-UF) front is designed to have the omnipotent edging mill (UE) of the roller for sleeping in (3) of driven edger roll (2) and servo-actuated.
2. universal frame group according to claim 1 is characterized in that: select the inclination angle of omnipotent edging mill (UE) roller (3) for sleeping in to make it in the scope of rough section bar (1) inclination angle, the edge of a wing, its person is littler.
3. according to claim 1 and 2 described universal frame groups, it is characterized in that: diameter omnipotent edging mill (UE) roller 93 that crouches) is less than the edger roll diameter.
4. universal frame group according to claim 1 is characterized in that: the profile of omnipotent edging mill (UE) roller (3) for sleeping in and/or edger roll (2) is cylindrical on the whole width of the body of roll.
5. universal frame group according to claim 1 is characterized in that: the roller for sleeping in (3) of omnipotent edging mill (UE) and/or the profile of edger roll (2) have the inclination angle of outside variation on the width of the body of roll.
6. according to the described universal frame group of claim 1 to 5, it is characterized in that: omnipotent edging mill (UE) roller (3) for sleeping in can be adjusted its width by different cavity size.
7. universal frame group according to claim 6 is characterized in that: by spacing dividing plate (4) roller 93 that adjust to crouch) width.
8. universal frame group according to claim 6 is characterized in that: by the width of machine driving or hydraulic transmission mode adjustment roller (3) for sleeping in.
9. according to the described universal frame group of claim 1 to 8, it is characterized in that: the middle barrel diameter of omnipotent edging mill (UE) roller (3) for sleeping in is less than body of roll outward flange diameter.
10. according to the described universal frame group of claim 1 to 9, it is characterized in that: omnipotent edging mill (UE) is arranged to a line with universal frame group (UR-HE-UF).
11. according to the described universal frame group of claim 1 to 9, it is characterized in that: omnipotent edging mill (UE) is preceding to be set on the parallel roll line, relatively universal frame group (UR-HE-UF) lateral offset.
12. a utilization is gone out the method for finished section bar by rough section rolling according to ten thousand frame groups of claim 1 and 11 described reversible operations, it is characterized in that: the rolling web height of first upset pass of beginning in omnipotent edging mill, reach edge of a wing thickness and/or web thickness in case of necessity, and utilize first universal frame and edging mill thereafter, at first by rolling three passages of these three frames, and in rolling pass subsequently, use universal frame and edging mill in the universal frame group to carry out an other upset pass at least, then utilize whole universal frame group to carry out finishing pass one time.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19512931A DE19512931A1 (en) | 1995-03-30 | 1995-03-30 | Universal stand group and method for rolling continuously cast pre-profiles |
| DE19512931.8 | 1995-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1135381A true CN1135381A (en) | 1996-11-13 |
| CN1074690C CN1074690C (en) | 2001-11-14 |
Family
ID=7758962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96104202A Expired - Fee Related CN1074690C (en) | 1995-03-30 | 1996-02-29 | Universal frame set for rolling continuously-casted coarse structural section and method thereof |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0734792B1 (en) |
| CN (1) | CN1074690C (en) |
| DE (2) | DE19512931A1 (en) |
| ES (1) | ES2139308T3 (en) |
| TW (1) | TW299254B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071673A (en) * | 2013-02-01 | 2013-05-01 | 中冶赛迪工程技术股份有限公司 | Compact universal vertical steel rail rolling method |
| CN106938280A (en) * | 2016-01-01 | 2017-07-11 | 天津欧神科技有限公司 | A kind of flat-rolled roller for producing Z-shape steel band |
| CN107427873A (en) * | 2015-03-19 | 2017-12-01 | 新日铁住金株式会社 | The manufacture method of H profile steel |
| CN114749933A (en) * | 2022-04-21 | 2022-07-15 | 保定市金桥纺机配件制造有限公司 | Automatic ring rolling machine for cotton carding rack |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19722732A1 (en) * | 1997-05-30 | 1998-12-03 | Schloemann Siemag Ag | Process for rolling steel profiles |
| IT1397191B1 (en) * | 2009-12-01 | 2013-01-04 | Siemens Vai Metals Tech Srl | UNIVERSAL REVERSIBLE TRAIN COMPACT FOR THE PRODUCTION OF LARGE MEDIUM PROFILES. |
| CN102247981B (en) * | 2011-06-01 | 2013-06-26 | 中冶赛迪工程技术股份有限公司 | Structural steel rolling production line and production process thereof |
| CN105057345B (en) * | 2015-08-21 | 2017-03-22 | 天津市中重科技工程有限公司 | Method for producing H-steel by chopping and rolling slabs with universal mills |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE286488C (en) * | ||||
| US410107A (en) * | 1889-08-27 | Art of rolling flanged beams | ||
| DE4337555A1 (en) * | 1993-11-04 | 1995-05-11 | Schloemann Siemag Ag | Method for rolling finished profiles from a preliminary profile by means of a roll stand arrangement working in reversing operation |
| JPS555169A (en) * | 1978-06-28 | 1980-01-16 | Sumitomo Metal Ind Ltd | Production of beam blank for large h steels from flat bloom and equipment train thereof |
| JPS58132305A (en) * | 1982-02-02 | 1983-08-06 | Hitachi Zosen Corp | Rolling method of rough steel ingot for h-shaped steel |
| JPS6133701A (en) * | 1984-07-26 | 1986-02-17 | Nippon Kokan Kk <Nkk> | Universal rolling method of h-beam |
| DE3636478C2 (en) * | 1986-10-27 | 1996-10-31 | Schloemann Siemag Ag | Process for rolling finished profiles from a preliminary profile |
| US5031435A (en) * | 1988-06-16 | 1991-07-16 | Kawasaki Steel Corporation | Adjustable width rolls for rolling mill |
| DE4415762A1 (en) * | 1994-04-29 | 1995-11-02 | Mannesmann Ag | Method and device for rolling beams from pre-profiles |
-
1995
- 1995-03-30 DE DE19512931A patent/DE19512931A1/en not_active Withdrawn
-
1996
- 1996-01-11 TW TW085100364A patent/TW299254B/zh active
- 1996-02-16 EP EP96250040A patent/EP0734792B1/en not_active Expired - Lifetime
- 1996-02-16 DE DE59603691T patent/DE59603691D1/en not_active Expired - Lifetime
- 1996-02-16 ES ES96250040T patent/ES2139308T3/en not_active Expired - Lifetime
- 1996-02-29 CN CN96104202A patent/CN1074690C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071673A (en) * | 2013-02-01 | 2013-05-01 | 中冶赛迪工程技术股份有限公司 | Compact universal vertical steel rail rolling method |
| CN107427873A (en) * | 2015-03-19 | 2017-12-01 | 新日铁住金株式会社 | The manufacture method of H profile steel |
| CN107427873B (en) * | 2015-03-19 | 2019-09-13 | 日本制铁株式会社 | The manufacturing method of H profile steel |
| US10710130B2 (en) | 2015-03-19 | 2020-07-14 | Nippon Steel Corporation | Method for producing H-shaped steel |
| CN106938280A (en) * | 2016-01-01 | 2017-07-11 | 天津欧神科技有限公司 | A kind of flat-rolled roller for producing Z-shape steel band |
| CN106938280B (en) * | 2016-01-01 | 2019-04-26 | 江苏宝强钢结构有限公司 | A kind of flat-rolled roller producing Z-shape steel band |
| CN114749933A (en) * | 2022-04-21 | 2022-07-15 | 保定市金桥纺机配件制造有限公司 | Automatic ring rolling machine for cotton carding rack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1074690C (en) | 2001-11-14 |
| DE19512931A1 (en) | 1996-10-02 |
| EP0734792A2 (en) | 1996-10-02 |
| EP0734792B1 (en) | 1999-11-24 |
| EP0734792A3 (en) | 1997-03-05 |
| TW299254B (en) | 1997-03-01 |
| ES2139308T3 (en) | 2000-02-01 |
| DE59603691D1 (en) | 1999-12-30 |
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Granted publication date: 20011114 Termination date: 20150229 |
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