EP0845310A1 - Drahtkühlung - Google Patents
Drahtkühlung Download PDFInfo
- Publication number
- EP0845310A1 EP0845310A1 EP97119944A EP97119944A EP0845310A1 EP 0845310 A1 EP0845310 A1 EP 0845310A1 EP 97119944 A EP97119944 A EP 97119944A EP 97119944 A EP97119944 A EP 97119944A EP 0845310 A1 EP0845310 A1 EP 0845310A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling
- reduction
- distances
- stand
- wire
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 19
- 238000005096 rolling process Methods 0.000 claims abstract description 88
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 238000004513 sizing Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Images
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
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
-
- 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
- B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
Definitions
- the invention relates to a method and a system for Finishing rolling of wire in at least one finishing block two-stage reduction stages in which the Wire cross section through a horizontal and Vertical stitch reduced with a specified degree of reduction and the final rolling speed as well as the degree of reduction of each Level according to the depending on material quality and the rolling speed of the rolling temperature is determined.
- the invention further relates to a Use of the process or the system.
- Rolling wire for example from billet stock, is usually carried out in a rolling mill from a Vorstrasse, an Eisenstrasse and one Finishing train.
- the rolling stock When entering the finishing train the rolling stock is already so largely pre-reduced that it has an approximately circular cross section.
- the rolling stock is then finished with a sequence two-stage reduction stages, each with a horizontal and Vertical stitch up to the specified final caliber finish rolled. This is a comparatively high one Final rolling speed reached, especially for the Rolling speeds of the rolled stock in the pre and Intermediate mill and thus overall for the rolling capacity of the entire rolling mill is decisive.
- US 4,182,148 discloses a finishing train for Fine steel profiles with one finished block, comprising four Units in two parallel rolling lines, each unit a double frame with one for each of the lines vertical / horizontal rolling stage.
- each unit In front and behind the Blocks are provided in the direction of rolling, which Rolled material from a feed roller table into one or the other Turn in the line and at the outlet into a common one Steer the outlet roller table back.
- Each block has one Central drive with downstream branching gear for the two units.
- the rolling lines are for layered Operation designed, intermediate cooling is not provided.
- DE 44 26 930 A1 discloses a fine steel rolling mill, especially wire rolling mill, for the optimization of Product quality and performance of the finishing train. With this can contribute with economic use of investment funds economical space requirement and without any noteworthy Production interruptions an increase in performance as well Modernization can be achieved by using the finishing train at least one two-stand standard bloom block is subordinate. Also with this system Intercooling not provided.
- the invention lies Task based on a procedure and one for this suitable plant for finish rolling wire in at least to indicate a finished block of funds in order to Final rolling speed and thus the capacity of the whole Comparatively rolling mill without impermissible temperature increase significantly increase and at the same time the flexibility of the Rolling process when adapting a rolling program z.
- the invention lies Task based on a procedure and one for this suitable plant for finish rolling wire in at least to indicate a finished block of funds in order to Final rolling speed and thus the capacity of the whole Comparatively rolling mill without impermissible temperature increase significantly increase and at the same time the flexibility of the Rolling process when adapting a rolling program z.
- B. on different material qualities or rolling stock dimensions increase and, if necessary, the maximum engine power to reduce the previously determined dimensions.
- the problem is solved with a method of Preamble of claim 1 type with the invention in that to achieve comparatively higher Final rolling speeds with a preferably increased degree of reduction and approximately constant rolling temperature increased between individual reduction stages of the finished block and at least in the area of part of these distances Intercooling of the rolling stock is carried out.
- the method according to the invention is surprising in achieved that simply and economically by dissolving a finished block in several two-stage reduction stages or units the sum of the heating in the stitches is significantly reduced. This is extremely important on the one hand for achieving higher final rolling speeds, but also on the other hand, to certain rolling stock qualities to be able to roll faster than before in the prior art.
- An advantageous embodiment of the method provides that it is carried out with at least two finished blocks, between which comparatively large distances are set and the rolling stock is intense in the area of these distances is cooled.
- the dissolution of a known finished block according to the Invention into several two-stand units can be one Specially selectable engine or transmission design for the individual units - like tearing apart Rolling families - make them unnecessary.
- Another advantage of the invention is that individual of the two-stand units only in use when they are needed and until then (e.g. when rolling thick dimensions) for "maintenance" To be available.
- the Conversion time of a prefabricated block with additionally available standing mill stands or units significantly reduced be what is essential to the availability and Overall performance of the rolling mill contributes.
- the guides are calmer and more precise to be assembled.
- the setting work can be carried out by using individual blocks this at least partially using electromotive Adjustment means are carried out.
- Blocks not used can, for example, next to the rolling line for a next one Dimensions can be prepared without wasting time. And still can by appropriate coordination of the purchase conditions among themselves the engine performance of the individual blocks be optimized.
- the overall system is more flexible because the Decrease between the individual levels or units in one relatively wide range, for example in the reduction of cross sections in the rough and intermediate street, changed or can be adapted to each other. This can be an advantage can also be used to maximize engine performance to reduce the determining dimensions.
- a system for finish rolling wire in at least one Multi-stand prefabricated block with two-stand units as Reduction levels, each with a horizontal and Vertical scaffolding, especially for performing the method according to the invention, provides that the units between them have comparatively increased distances, and that in Range of at least some of these distances Local cooling of the rolling stock is available.
- the invention provides a use of the Procedure and the system provided for its implementation especially for finish rolling wires Stainless steel quality.
- the inventive method and the system enable Increasing the productivity of a wire rolling mill.
- Figures 1 to 4 is the temperature profile for rolls of tire wire in a roughing area of the plant area between 0 and 50 m, then in an intermediate street between 50 and 150 m in length, as well as in an eight-stand Prefabricated block with two-stand units between 150 and 200 m length shown.
- the final diameter is 5.5 each mm.
- the core temperature reaches according to Figure 1 when the Rolled goods at 1000 ° C in the first roughing stand at the beginning of the Intermediate rolling at approx. 66 m a temperature peak of 1050 ° C, after which the wire emerges from the last
- the core temperature drops to approx. 825 ° C and in the eight-stand prefabricated block at approx. 169 m at 1035 ° C increases and by means of cooling when exiting the last Scaffolding is lowered to approx. 855 ° C.
- the strongest Temperature fluctuations naturally occur with Surface temperatures with difference amounts of approximately 300 ° C of individual cooling levels.
- FIGS. 1 and 2 are boundary conditions and total length of the road with Fig. 1 up to 150 m length of the rough and intermediate road identical.
- the finished block broken down into five two-stand blocks with intermediate cooling.
- the core temperature in the rolling stock is thus around on average about 70 ° C, namely from 1035 ° C of FIG. 1 to 965 ° C 2.
- the final temperatures at 225 m length are 855. 835, 825 ° C (core temperature, average temperature, Surface temperature).
- the temperature curves of FIGS. 1 and 2 correspond to a final rolling speed under otherwise the same Material quality and rolling program parameters of 105 m / s.
- Figures 3 and 4 show temperature curves same rolling program, starting material and end product, however with 150 m / s rolling speed. It is in the Intermediate road reaches a maximum temperature of 1070 °, when the rolling stock enters the finished block to 870 ° C (Core), 845 ° C (average temperature) and 830 ° C (Surface temperature) is reduced in several cooling stages. By dissolving the finished block in two-stand units with Intercooling is achieved at the same Production parameters the maximum core temperature in Finished block with a system length of approx. 180 m not above 1060 ° C increases. Surrendered after leaving the last finishing stand for the core temperature 960 ° C, for the Average temperature 940 ° C and for that Surface temperature 925 ° C.
- Figure 5 shows a typical course of the core average and Surface temperatures with positive effects of Method and the system according to the invention.
- a total of five two-stand 10 in an extension of 150 to 350 m arranged at intervals of 40 m on average and with Intercooling equipped. This ensures that the Core temperature at the top, for example at 280 m 865 ° C does not exceed and the average temperature itself settles at approximately 800 ° C.
- the other system parameters correspond to the course of the curves from FIGS. 1 to 4, however, the rolling speed is 150 m / s.
- Figure 6 shows the temperature simulation of a stainless steel mill when rolling a Ni-based alloy with a Rolling speed of 20 m / s.
- the Temperature peak in the finished block at approx. 275 m in the range from 1270 ° C.
- Figure 7 shows the same rolling process as Fig. 6, but with a final rolling speed of 30 m / s.
- the Temperature peak in the finished block at approx. 275 m in the range from 1340 ° C.
- FIG. 9 shows the same rolling parameters and one with three two-stand units with cooling more powerful exploded finished block a reduction in Peak temperature at 240 m at 1275 ° C. That is the proof provided that a realization is comparatively higher Final rolling speeds with possibly increased Degree of reduction and almost constant rolling temperature or reduced rolling temperature succeeds if after the Invention the distances between individual reduction stages or units of a finished block increased and at least in Area of part of these distances an intermediate cooling of the Rolled good is made. It becomes essential Production increase with the use of effective economic Medium reached, with the Vor No and insectsse slightly be adapted and substantially preserved.
- Figure 10 shows a in the form of a block diagram Prefabricated block (1) with five two-stand units (2a) vertical, (2b) horizontal to (6a) vertical, (6b) horizontal. Each of these units (2 to 6) is a cooling or Downstream cooling section (20, 30, 40, 50, 60).
- the after the Invention thus achievable temperature curve for core, Average and surface is favorably lowered and corresponds approximately to the curve diagram of FIG. 5.
- This Designing a prefabricated block will be an optimal solution achieved the task set at the beginning.
Abstract
Description
- Fig. 1
- Temperaturkurven für Walzgut im Durchlauf durch Vor- und Zwischenstraße sowie einen mehrgerüstigen Fertigblock, Eintrittsgeschwindigkeit (EG) = 0,53 m/s, Endwalzgeschwindigkeit (EWG) = 105 m/s;
- Fig. 2
- Temperaturkurven bei gleicher Anlage und gleichem Walzprogramm, jedoch mit teilweise auseinandergezogenem Fertigblock und Zwischenkühlung, EG = 0,53 m/s, EWG = 105 m/s;
- Fig. 3
- Temperaturkurven bei Anlage und Walzprogramm gemäß Fig. 1, jedoch mit EWG = 150 m/s;
- Fig. 4
- Temperaturkurven bei gleicher Anlage und gleichem Walzprogramm gemäß Fig. 2, jedoch mit EWG = 150 m/s;
- Fig. 5
- Temperaturkurven, Anlage und Walzprogramm gemäß Fig. 4, jedoch mit erheblich weiter auseinandergezogenem Fertigblock, EWG = 150 m/s;
- Fig. 6
- Temperaturkurven einer Edelstahlstraße, EG = 2,4 m/s, EWG = 20 m/s;
- Fig. 7
- Temperaturkurven gemäß Fig. 6, jedoch EWG = 30 m/s;
- Fig. 8
- Temperaturkurven gemäß Fig. 6, jedoch EWG = 40 m/s;
- Fig. 9
- Temperaturkurven gemäß Fig. 8, jedoch mit auseinandergezogenem Fertigblock und verstärkter Zwischenkühlung;
- Fig. 10
- einen Fertigblock gemäß Fig. 5 in Form eines Stammbaums.
Claims (7)
- Verfahren zum Fertigwalzen von Draht in wenigstens einem Fertigblock mit zweigerüstigen Reduktionsstufen, in welchen der Drahtquerschnitt durch jeweils einen Horizontal- und Vertikalstich mit vorgegebenem Reduktionsgrad reduziert und die Endwalzgeschwindigkeit sowie der Reduktionsgrad jeder Stufe nach Maßgabe der in Abhängigkeit von Materialqualität und Walzgeschwindigkeit sich einstellenden Walztemperatur bestimmt wird, dadurch gekennzeichnet, dass zur Verwirklichung vergleichsweise höherer Endwalzgeschwindigkeiten bei gegebenenfalls erhöhtem Reduktionsgrad und annähernd gleichbleibender Walztemperatur die Abstände zwischen einzelnen Reduktionsstufen des Fertigblocks erhöht und zumindest im Bereich eines Teils dieser Abstände eine Zwischenkühlung des Walzgutes vorgenommen wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Summe der Aufheizungsvorgänge in den Stichen durch Auflösen eines mehrstufigen Fertigblocks in einzelne voneinander beabstandete Reduktionsstufen reduziert wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass es mit wenigstens zwei Fertigblöcken durchgeführt wird, zwischen welchen vergleichsweise große Abstände eingestellt werden und das Walzgut im Bereich dieser Abstände intensiv gekühlt wird.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zum Erreichen einer höheren Flexibilität in der Reduktionabstimmung einzelner Stufen untereinander eine zweigerüstige Stufe bzw. Einheit und bevorzugt die letzte, als Sizing-Stufe betrieben wird.
- Anlage zum Fertigwalzen von Draht in wenigstens einem mehrgerüstigem Fertigblock (1) mit zweigerüstigen Einheiten (2a, 2b bis 6a, 6b), die jeweils ein Horizontal- (2a - 6a) und Vertikalgerüst (2b - 6b) umfassen, insbesondere zur Durchführung des Verfahrens nach den vorhergehenden Ansprüchen, dadurch gekennzeichnet, dass die Einheiten (2a, 2b - 6a, 6b) zwischen sich vergleichsweise erhöhte Abstände aufweisen, und daß im Bereich zumindest einiger dieser Abstände Vorrichtungen (20, 30, 40, 50) zum Zwischenkühlen des durchlaufenden Walzgutes vorhanden sind.
- Anlage nach Anspruch 5, dadurch gekennzeichnet, dass einzelne Einheiten und bevorzugt die jeweils letzte Einheit als Sizing-Stufe ausgebildet sind bzw. eingesetzt ist.
- Verwendung des Verfahrens und der Anlage nach den Ansprüchen 1 bis 6 zum Fertigwalzen von Drähten insbesondere mit Edelstahlqualität.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19649022 | 1996-11-27 | ||
DE19649022A DE19649022A1 (de) | 1996-11-27 | 1996-11-27 | Drahtkühlung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0845310A1 true EP0845310A1 (de) | 1998-06-03 |
EP0845310B1 EP0845310B1 (de) | 2003-07-16 |
Family
ID=7812858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97119944A Expired - Lifetime EP0845310B1 (de) | 1996-11-27 | 1997-11-14 | Drahtkühlung |
Country Status (4)
Country | Link |
---|---|
US (1) | US5907967A (de) |
EP (1) | EP0845310B1 (de) |
AT (1) | ATE245059T1 (de) |
DE (2) | DE19649022A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19810215A1 (de) * | 1998-03-10 | 1999-09-16 | Schloemann Siemag Ag | Kühlschacht für einen Rollgang |
DE19960638A1 (de) * | 1999-12-16 | 2001-06-28 | Sms Demag Ag | Wasserkühlstrecke für Draht |
CN109174979A (zh) * | 2018-08-21 | 2019-01-11 | 唐山市德龙钢铁有限公司 | 一种提高线材成材率的水冷段布置方式 |
DE102020205252A1 (de) * | 2020-04-24 | 2021-10-28 | Kocks Technik Gmbh & Co Kg | Vorrichtung zum Kühlen von Langprodukten und Verfahren zum Kühlen eines Langproduktes unter Verwendung derselben |
CN112935008B (zh) * | 2021-01-25 | 2023-04-28 | 陕西鼎益科技有限公司 | 一种新型特种高温合金丝材热轧制工艺 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2055650A (en) * | 1979-07-23 | 1981-03-11 | Nippon Steel Corp | Process for producing bars or wire rods by rolling billets or blooms |
DE3039101A1 (de) * | 1980-10-16 | 1982-05-13 | Schloemann-Siemag AG, 4000 Düsseldorf | Anordnung einer kontinuierlich arbeitenden feinstahl-drahtwalzstrasse zum auswalzen von draht oder rundquerschnitten aus edelstaehlen oder hochwertigen legierungen |
EP0140592A2 (de) * | 1983-10-31 | 1985-05-08 | MORGAN CONSTRUCTION COMPANY (a Massachusetts corporation) | Verfahren und Vorrichtung zum Kühlen von Stabstahl |
EP0560115A1 (de) * | 1992-03-07 | 1993-09-15 | Sms Schloemann-Siemag Aktiengesellschaft | Verfahren und Walzwerk zum Präzisionswalzen von Draht bzw. von Walzgut mit Rundquerschnitt |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4274273A (en) * | 1979-10-03 | 1981-06-23 | General Electric Company | Temperature control in hot strip mill |
CA2066475C (en) * | 1991-05-06 | 1997-06-03 | Terence M. Shore | Method and apparatus for continuously hot rolling of ferrous long products |
-
1996
- 1996-11-27 DE DE19649022A patent/DE19649022A1/de not_active Withdrawn
-
1997
- 1997-11-14 DE DE59710439T patent/DE59710439D1/de not_active Expired - Fee Related
- 1997-11-14 EP EP97119944A patent/EP0845310B1/de not_active Expired - Lifetime
- 1997-11-14 AT AT97119944T patent/ATE245059T1/de not_active IP Right Cessation
- 1997-11-26 US US08/979,967 patent/US5907967A/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2055650A (en) * | 1979-07-23 | 1981-03-11 | Nippon Steel Corp | Process for producing bars or wire rods by rolling billets or blooms |
DE3039101A1 (de) * | 1980-10-16 | 1982-05-13 | Schloemann-Siemag AG, 4000 Düsseldorf | Anordnung einer kontinuierlich arbeitenden feinstahl-drahtwalzstrasse zum auswalzen von draht oder rundquerschnitten aus edelstaehlen oder hochwertigen legierungen |
EP0140592A2 (de) * | 1983-10-31 | 1985-05-08 | MORGAN CONSTRUCTION COMPANY (a Massachusetts corporation) | Verfahren und Vorrichtung zum Kühlen von Stabstahl |
EP0560115A1 (de) * | 1992-03-07 | 1993-09-15 | Sms Schloemann-Siemag Aktiengesellschaft | Verfahren und Walzwerk zum Präzisionswalzen von Draht bzw. von Walzgut mit Rundquerschnitt |
Also Published As
Publication number | Publication date |
---|---|
DE19649022A1 (de) | 1998-05-28 |
ATE245059T1 (de) | 2003-08-15 |
EP0845310B1 (de) | 2003-07-16 |
DE59710439D1 (de) | 2003-08-21 |
US5907967A (en) | 1999-06-01 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Effective date: 19971215 |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: PLOCIENNIK, UWE, DIPL.-ING. Inventor name: HOFFMANN, KLAUS, DIPL.-ING. Inventor name: KLEINEFELDT, GEORG |
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RBV | Designated contracting states (corrected) |
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