EP1121208B1 - Verfahren und vorrichtung zum herstellen eines metallbandes für abzulängende tailored blanks - Google Patents
Verfahren und vorrichtung zum herstellen eines metallbandes für abzulängende tailored blanks Download PDFInfo
- Publication number
- EP1121208B1 EP1121208B1 EP99948880A EP99948880A EP1121208B1 EP 1121208 B1 EP1121208 B1 EP 1121208B1 EP 99948880 A EP99948880 A EP 99948880A EP 99948880 A EP99948880 A EP 99948880A EP 1121208 B1 EP1121208 B1 EP 1121208B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- rolling
- process according
- metal strip
- temperature
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/24—Automatic variation of thickness according to a predetermined programme
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
- B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/02—Austenitic rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/04—Ferritic rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2205/00—Particular shaped rolled products
- B21B2205/02—Tailored blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
-
- 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
- B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
Definitions
- the invention relates to a method for producing a Metal strip, in particular made of steel, with sections different thicknesses by rolling for cut to length Tailored blanks.
- first Manufacturing process is made of two sheets different thickness and / or different Assumed material composition in the butt joint be welded together.
- the advantage of one Manufacturing process consists in the small device-related effort for its implementation. Because of the no high production speeds Permitting welding process is this type of manufacture but only suitable for small quantities.
- a disadvantage is also that the transitions at the weld from that one sheet on the other sheet is leaping. Thereby occur strong and erratic in case of stress Voltage increases on. Tailored blanks with one optimal load-dependent dimensioning over the entire area are therefore with such a procedure not get.
- the invention is based on the object Rolling process for tailored blanks to be cut to length from the strip and to create a suitable device with which or with that at high rolling speeds short and gently rising transitions between band sections of different thicknesses can be produced can, without the need for extremely high rolling forces.
- This task is initiated in a procedure mentioned type solved in that the different thick sections made by hot rolling the strip by hot-rolling the strip, before Hot rolling pass in sections by cooling or heating is set to a different temperature.
- the inventive for performing the method suitable device is characterized by a Rolling mill with hydraulic feed on a constant rolling force is adjustable and by a front the strip cooling or heating device arranged in the rolling mill.
- the physical property of a metal strip is exploited that the yield stress depends on the temperature.
- sections of different thicknesses are then obtained with an essentially constant rolling force.
- the temperature level of the strip at which rolling is carried out is in each case so high that the strip can be rolled with a rolling force that is significantly reduced compared to cold rolling.
- This reduced rolling force then also enables short transitions from sections of thicker strip to sections of thinner strip and vice versa. Since the rolling forces are comparatively small overall, there are also significantly smaller values for the springing of the rolling stand, so that correspondingly complex compensation devices are not required.
- the strip to be rolled is either heated or cooled to reduce the yield stress of the metal depends on several parameters, in particular the temperature of the metal strip, the metal strip quality, the rolling conditions and the grain size of the metal strip to be rolled.
- the metal strip is preferably cooled or heated in a temperature range with the largest possible temperature-dependent yield stress gradient, because small changes in temperature which can therefore be achieved with a short treatment time lead to relatively large changes in the yield stress and thus also to relatively large changes in strip thickness. This principle can be deviated from in individual cases, specifically if the yield stress level is significantly lower with a somewhat smaller yield stress gradient. For many steels of the two steel grades, the largest possible temperature-dependent yield stress gradient lies between the ⁇ and ⁇ range.
- high-strength and soft steels can also be distinguished using the carbon equivalent according to Yurioka (Australian Weld. Res. Ass. Melbourne 19.-20.03.81, Paper 10, p.
- CEN C + [0.75 + 0.25 * tanh (20+ (C-0.12))] * ⁇ Si / 24 + Mn / 6 + Cu / 15 + Ni / 20 + (Cr + Mo + V + Nb + Ti) / 5 + 5 * B ⁇ the alloy contents in mass percent are to be taken into account.
- Two phase area ( ⁇ + ⁇ ) can also be used because a sudden structural change and Yield stress change with small temperature changes does not occur.
- the Starting point for cooling the metal strip in the Two-phase area or the end point of the Heating of the metal strip lie in the two-phase area.
- the hot rolling takes place in the thickness reducing sections of the metal strip preferably in the two-phase region ( ⁇ + ⁇ ) and in the other sections in the ferrite region ( ⁇ ).
- the tape with in substantially constant rolling force is rolled. Becomes nevertheless provided that the rolling force be changed can then influence the degree the thickness reduction. Then that's from Advantage if the temperature change alone Desired thickness reduction cannot be achieved.
- the thickness reduction of the metal strip in the hot rolling pass should also be at least 10% in the thicker sections be.
- Both are suitable for carrying out the method Hot strip that warmed up from the cold state again was, as well as hot strip, which in the coil on a certain temperature was kept, as well as by a Double-roller produced directly from the heat of the melt Hot strip from the double roller directly to the Manufacturing process according to the invention is supplied.
- the forming properties of the Band in the differently reduced in thickness Sections are not as different as in one cold rolled strip with work hardening, can be used for Compensation of the different forming properties in the Connection to hot rolling the band of a heat treatment be subjected.
- the cooled metal band can a temperature of more than 600 ° C can be heated.
- the belt is preferred at a temperature of kept warm over 600 ° C.
- the temperature of the tape can be exploited after the Has hot rolling. This is advantageously done in Coil.
- heat treatment can also be carried out in the Annealing furnace or hot-dip galvanizing with a temperature of over 600 ° C.
- the hydraulic infeed of the rolling mill should one Travel limiter for setting the smallest Have a roll gap.
- the roll stand shown consists of a frame 1, in which two lower bearing blocks 3, 4 for a lower one Back-up roller 5 are arranged stationary.
- Two top Bearing blocks 6.7 support an upper support roller 8.
- This Bearing blocks 6.7 are two adjusting devices 9.10 for assigned a smallest nip 11, the between two supported on the support rollers 5.8 Work rolls 12,13 is located.
- the upper bearing blocks 6,7 are hydraulic Deliveries 14.15 adjusted. Between these hydraulic infeeds 14.15 and the top Bearing blocks 6.7 are used as energy and energy storage Spring assemblies 16, 17 arranged.
- FIG. 2 shows, such a roll stand in the direction of travel R of a hot strip W is assigned a cooling device 18, which consists of swiveling or rotating cooling nozzles 18a, 18b arranged above and below the hot strip W and directed against the hot strip W.
- the cooling nozzles 18a, 18b are preferably operated with water vapor. This is done at intervals to cool the hot strip W in sections.
- the cooling takes place in such a way that when the essentially constant rolling force is set, the hot strip W entering the rolling stand leaves the rolling stand with alternately thick and thin sections W 1 , W 2 and ramp-shaped short transitions W 3 , W 4 .
- these relationships are exaggerated in the drawing for reasons of better illustration.
- the flow stress diagrams for a high strength Steel quality according to Figure 3 and for a soft Steel quality according to Figure 4 shows a completely different course.
- This different Course is in the setting of the sections different strip temperature to be set consider.
- the Temperature should be set so that only outside the Mixed area ( ⁇ + ⁇ ) is rolled.
- the Change in temperature of the hot strip in a range of Flow stress / temperature curve induced in which the Gradient of the curve is greatest, i.e. in an area in which as little as possible Changes in temperature as large as possible Yield stress can be achieved.
- the hot rolling pass advantageous at the highest possible temperature level, so that the required rolling force remains as low as possible.
- the thickness reduction should be in the after rolling thicker sections at least 10% be.
- This rolling heat can be used to heat treat the strip.
- the tape is wound up from a winding device 19 to form a coil 20.
- the temperature of the differently warm band sections is equalized. This also compensates for the different material properties created during rolling in the more or less heavily rolled sections.
- Such a band is finally cut to length receive the tailored blanks.
Description
- Figur 1
- ein Walzgerüst in Vorderansicht,
- Figur 2
- das Walzgerüst gemäß Figur 1 mit Kühlvorrichtung und einem Aufwickelhaspel in Seitenansicht,
- Figur 3
- ein temperaturabhängiges Fließspannungsdiagramm für
einen höherfesten Stahl
und - Figur 4
- ein temperaturabhängiges Fließspannungsdiagramm für einen weichen Stahl.
Claims (20)
- Verfahren zum Herstellen eines Metallbandes, insbesondere aus Stahl, mit Abschnitten unterschiedlicher Dicke durch Walzen für abzulängende Tailored Blanks,
dadurch gekennzeichnet , daß die unterschiedlich dicken Abschnitte des Bandes durch Warmwalzen hergestellt werden, indem das Band vor dem Warmwalzstich abschnittsweise durch Kühlen oder Erwärmen auf eine unterschiedliche Temperatur eingestellt wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet , daß in Abhängigkeit von der Stahlqualität (weich oder höherfest) und der Temperatur des Metallbandes das Metallband abschnittsweise entweder erwärmt oder gekühlt wird, um die Fließspannung des Stahls zu vermindern. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet , daß das Kühlen beziehungsweise Erwärmen des Metallbandes in einem Temperaturbereich mit einem möglichst großen temperaturabhängigen Fließspannungsgradienten erfolgt. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet , daß bei höherfesten Stahlqualitäten, bei denen sich das Zweiphasengebiet (γ + α) über einen größeren Temperaturbereich erstreckt, der Startpunkt der Abkühlung des Metallbandes im Zweiphasengebiet (γ + α) beziehungsweise der Endpunkt der Erwärmung des Metallbandes im Zweiphasengebiet (γ + α) liegt. - Verfahren nach Anspruch 4,
dadurch gekennzeichnet , daß das Warmwalzen in den in der Dicke zu reduzierenden Abschnitten des Metallbandes im Zweiphasengebiet (γ + α) und in den anderen Abschnitten im Ferrit-Gebiet (α) erfolgt. - Verfahren nach Anspruch 2,
dadurch gekennzeichnet , daß das Warmwalzen bei weichen Stahlqualitäten in den in der Dicke zu reduzierenden Abschnitten im Ferrit-Gebiet (α) und in den anderen Abschnitten im Austenit-Gebiet (γ) erfolgt. - Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet , daß beim Warmwalzen die dickeren Abschnitte des Metallbandes um mindestens 10 % dickenreduziert werden. - Verfahren nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet , daß das Warmwalzen in den dünnen und dicken Abschnitten mit im wesentlichen gleich großer Walzkraft erfolgt. - Verfahren nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet , daß das Metallband nach dem Warmwalzen zum Zwecke eines Ausgleichs der beim Warmwalzen erhaltenen abschnittsweise unterschiedlichen Umformeigenschaften wärmebehandelt wird. - Verfahren nach Anspruch 9,
dadurch gekennzeichnet , daß das Metallband nach dem Warmwalzen bei einer Temperatur T ≥ 600° C warmgehalten wird. - Verfahren nach Anspruch 10,
dadurch gekennzeichnet , daß das Warmhalten im Coil erfolgt. - Verfahren nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet , daß unmittelbar nach dem Warmwalzen das Metallband bis auf eine Temperatur ≤ 500° C gekühlt wird. - Verfahren nach einem der Ansprüche 9 bis 12,
dadurch gekennzeichnet , daß das Metallband auf eine Temperatur ≥ 600° C erwärmt wird. - Verfahren nach einem der Ansprüche 9 bis 13,
dadurch gekennzeichnet , daß die Wärmebehandlung beim Durchlauf durch einen Glühofen oder eine Feuerverzinkungsanlage erfolgt. - Vorrichtung zum Herstellen eines Metallbandes, insbesondere aus Stahl, mit Abschnitten unterschiedlicher Dicke durch Walzen für abzulängende Tailored Blanks, die ein Walzgerüst mit hydraulischer Zustellung umfaßt, zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß die hydraulische Zustellung (14, 15) auf eine konstante Walzkraft einstellbar ist und eine vor dem Walzgerüst (1) angeordnete Bandkühl- (18) oder -heizeinrichtung vorgesehen ist.
- Vorrichtung nach Anspruch 15,
dadurch gekennzeichnet , daß die konstante Walzkraft von der hydraulischen Zustellung (14,15) über eine Federgruppe (16, 17) auf das Walzwerk übertragen wird. - Vorrichtung nach Anspruch 15 oder 16,
dadurch gekennzeichnet , daß die Bandkühleinrichtung (18) auf die Bandoberfläche gerichtete Düsen (18a,18b) aufweist, die mit Preßluft, Wasser oder Wasserdampf betrieben sind. - Vorrichtung nach Anspruch 17,
dadurch gekennzeichnet , daß die Düsen (18a,18b) in Bandlaufrichtung schwenk- oder drehbar sind. - Vorrichtung nach Anspruch 18,
dadurch gekennzeichnet, daß die Düsen (18a, 18b) in Bandlaufrichtung im wesentlichen parallel zum Band mit Bandlaufgeschwindigkeit verstellbar sind. - Vorrichtung nach einem der Ansprüche 15 bis 19,
dadurch gekennzeichnet, daß die hydraulische Zustellung (14, 15) einen Stellwegbegrenzer für die Einstellung auf einen kleinsten Walzspalt aufweist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19846900 | 1998-10-12 | ||
DE19846900A DE19846900C2 (de) | 1998-10-12 | 1998-10-12 | Verfahren und Vorrichtung zum Herstellen eines Metallbandes für abzulängende Tailored Blanks |
PCT/EP1999/007178 WO2000021695A1 (de) | 1998-10-12 | 1999-09-28 | Verfahren und vorrichtung zum herstellen eines metallbandes für abzulängende tailored blanks |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1121208A1 EP1121208A1 (de) | 2001-08-08 |
EP1121208B1 true EP1121208B1 (de) | 2003-01-22 |
Family
ID=7884152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99948880A Expired - Lifetime EP1121208B1 (de) | 1998-10-12 | 1999-09-28 | Verfahren und vorrichtung zum herstellen eines metallbandes für abzulängende tailored blanks |
Country Status (6)
Country | Link |
---|---|
US (1) | US6536254B1 (de) |
EP (1) | EP1121208B1 (de) |
AT (1) | ATE231423T1 (de) |
DE (2) | DE19846900C2 (de) |
ES (1) | ES2190255T3 (de) |
WO (1) | WO2000021695A1 (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10041280C2 (de) | 2000-08-22 | 2003-03-06 | Muhr & Bender Kg | Verfahren und Vorrichtung zum flexiblen Walzen eines Metallbandes |
DE10131466B4 (de) * | 2001-06-29 | 2006-09-21 | Thyssenkrupp Steel Ag | Mantelförmiges Mittelteil eines Katalysatorgehäuses |
DE10156087B4 (de) * | 2001-11-16 | 2005-06-02 | Müller Weingarten AG | Vorrichtung zur Bearbeitung eines Metallbandes mit unterschiedlichen Dicken |
DE10350670B3 (de) * | 2003-10-30 | 2005-02-03 | Thyssenkrupp Stahl Ag | Blechplatine für die Herstellung von Karosseriebauteilen von Kraftfahrzeugen, sowie Verfahren zum Herstellen der Blechplatine |
DE102004017343A1 (de) * | 2004-04-06 | 2005-11-03 | Muhr Und Bender Kg | Verfahren zur Herstellung von Profilen mit in Längsrichtung veränderlichem Querschnitt |
DE102005029461B3 (de) * | 2005-06-24 | 2006-12-07 | Siemens Ag | Verfahren zum Aufbringen eines Kühlmittels und Walzgerüst zur Durchführung des Verfahrens |
DE102005031461A1 (de) * | 2005-07-04 | 2007-01-11 | Bilstein Gmbh & Co. Kg | Verfahren zur Herstellung eines mikrolegierten Kaltbandes mit einem auf den Dickenverlauf abgestimmten Eigenschaftsprofil |
DE102005038488A1 (de) * | 2005-08-13 | 2007-02-22 | Bayerische Motoren Werke Ag | Verstärkungsblech für eine B-Säule einer Fahrzeugkarosserie |
SE530228C2 (sv) * | 2006-08-25 | 2008-04-01 | Gestamp Hardtech Ab | Sätt att varmforma och härda en plåtdetalj, samt en B-stolpe till ett fordon |
EP2062992B1 (de) * | 2006-10-13 | 2018-01-31 | Nippon Steel & Sumitomo Metal Corporation | Vorrichtung und verfahren zur herstellung von stahlblech mittels schmelztauchen mit zinklegierung |
JP5426672B2 (ja) * | 2008-07-10 | 2014-02-26 | シロー インダストリーズ インコーポレイテッド | 金属成形方法及びコイル状溶接アセンブリ |
US8365563B2 (en) * | 2009-11-16 | 2013-02-05 | Quad Engineering, Inc. | Methods for reducing ridge buckles and annealing stickers in cold rolled strip and ridge-flattening skin pass mill |
DE102010000292B4 (de) | 2010-02-03 | 2014-02-13 | Thyssenkrupp Steel Europe Ag | Metallband hergestellt aus Stahl mit unterschiedlichen mechanischen Eigenschaften |
EP2418031A1 (de) * | 2010-08-13 | 2012-02-15 | Siemens Aktiengesellschaft | Verfahren zum Herstellen von Metallband mittels einer Gießwalzverbundanlage, Steuer- und/oder Regeleinrichtung für eine Gießwalzverbundanlage und Gießwalzverbundanlage |
DE102011051345A1 (de) * | 2011-06-27 | 2012-12-27 | Muhr Und Bender Kg | Verfahren und Vorrichtung zum Herstellen von Platinen mit unterschiedlichen Dicken |
DE102013224924B4 (de) * | 2013-12-04 | 2022-05-05 | Muhr Und Bender Kg | Container und Verfahren zur Herstellung eines Containers |
EP2982453A1 (de) * | 2014-08-06 | 2016-02-10 | Primetals Technologies Austria GmbH | Einstellen eines gezielten Temperaturprofiles an Bandkopf und Bandfuß vor dem Querteilen eines Metallbands |
US10618107B2 (en) * | 2016-04-14 | 2020-04-14 | GM Global Technology Operations LLC | Variable thickness continuous casting for tailor rolling |
DE102019132133A1 (de) * | 2019-11-27 | 2021-05-27 | Muhr Und Bender Kg | Anlage und verfahren zum flexiblen walzen von metallischem bandmaterial |
EP3964602A1 (de) | 2020-09-02 | 2022-03-09 | ThyssenKrupp Steel Europe AG | Verfahren zum herstellen eines blechbauteils durch warmumformen eines mit einer korrosionsschutzbeschichtung versehenen stahlflachprodukts |
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GB1194328A (en) | 1966-09-09 | 1970-06-10 | United Eng Foundry Co | Rolling Mill for Producing Constant Gauge |
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SU940980A1 (ru) | 1980-03-24 | 1982-07-07 | Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт | Способ продольной периодической прокатки штучных заготовок |
JPS61172603A (ja) * | 1985-01-29 | 1986-08-04 | Sumitomo Metal Ind Ltd | 厚板圧延法 |
JPS60244411A (ja) | 1985-04-22 | 1985-12-04 | Ishikawajima Harima Heavy Ind Co Ltd | 熱間圧延機の冷却装置 |
JPS6250004A (ja) * | 1985-08-26 | 1987-03-04 | Sumitomo Metal Ind Ltd | 差厚鋼板の製造方法 |
JPS6340604A (ja) | 1986-08-04 | 1988-02-22 | Sumitomo Metal Ind Ltd | 異厚鋼板の製造方法 |
JPS63260604A (ja) * | 1987-04-20 | 1988-10-27 | Nippon Steel Corp | 薄鋼板の連続熱間圧延方法 |
JPH06154806A (ja) * | 1992-11-20 | 1994-06-03 | Nkk Corp | 熱延ストリップの走間板厚変更圧延方法 |
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EP0904860A3 (de) * | 1997-09-30 | 2000-07-05 | Firma Muhr und Bender | Verfahren und Anlage zur Herstellung von bikonischem Draht |
US6182490B1 (en) * | 1999-03-19 | 2001-02-06 | Danieli Technology Inc. | Super thin strip hot rolling |
EP1080800B1 (de) * | 1999-08-06 | 2005-01-12 | Muhr und Bender KG | Verfahren zum flexiblen Walzen eines Metallbandes |
-
1998
- 1998-10-12 DE DE19846900A patent/DE19846900C2/de not_active Expired - Fee Related
-
1999
- 1999-09-28 AT AT99948880T patent/ATE231423T1/de not_active IP Right Cessation
- 1999-09-28 US US09/787,619 patent/US6536254B1/en not_active Expired - Fee Related
- 1999-09-28 DE DE59904111T patent/DE59904111D1/de not_active Expired - Fee Related
- 1999-09-28 ES ES99948880T patent/ES2190255T3/es not_active Expired - Lifetime
- 1999-09-28 WO PCT/EP1999/007178 patent/WO2000021695A1/de active IP Right Grant
- 1999-09-28 EP EP99948880A patent/EP1121208B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2190255T3 (es) | 2003-07-16 |
WO2000021695A1 (de) | 2000-04-20 |
DE19846900C2 (de) | 2000-08-10 |
US6536254B1 (en) | 2003-03-25 |
DE19846900A1 (de) | 2000-04-27 |
ATE231423T1 (de) | 2003-02-15 |
DE59904111D1 (de) | 2003-02-27 |
EP1121208A1 (de) | 2001-08-08 |
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