EP1080800B1 - Verfahren zum flexiblen Walzen eines Metallbandes - Google Patents
Verfahren zum flexiblen Walzen eines Metallbandes Download PDFInfo
- Publication number
- EP1080800B1 EP1080800B1 EP00116083A EP00116083A EP1080800B1 EP 1080800 B1 EP1080800 B1 EP 1080800B1 EP 00116083 A EP00116083 A EP 00116083A EP 00116083 A EP00116083 A EP 00116083A EP 1080800 B1 EP1080800 B1 EP 1080800B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling
- metallic strip
- strip
- rolls
- bending
- 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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/24—Automatic variation of thickness according to a predetermined programme
- B21B37/26—Automatic variation of thickness according to a predetermined programme for obtaining one strip having successive lengths of different constant thickness
-
- 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
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/38—Control of flatness or profile during rolling of strip, sheets or plates using roll bending
-
- 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
- B21B37/70—Length control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0071—Levelling the rolled 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
- B21B37/58—Roll-force control; Roll-gap control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
Definitions
- the invention relates to a method for flexible rolling of a metal strip according to the preambles of claim 1 or 2, wherein the metal strip is guided during the rolling process by one between two Work rolls formed and so adjustable roll gap that over the length of the metal strip Tape sections with different tape thickness can be achieved (See e.g. JP (A) 61172603).
- the flexible rolling as a process for the production of flat metal strips with over Their length defined different tape thicknesses is already known from practice and characterized in that targeted during the rolling process of the nip is changed to different tape thicknesses over the length of the metal strip achieve.
- this can be done indirectly by changing the deformation resistance of the material by heating or cooling the metal strip and correspondingly changed springing of the roll stand during the rolling process.
- the temperature of the rolling stock both below and above the recrystallization temperature.
- the change of the Roll nip also by direct movement of the nip on the work rolls be made. Below are both options under the flexible rolling to achieve a defined band thickness course understood.
- the process of flexible rolling is usually called coil rolling of coil Coil designed, but also variants such as coil on circuit board or circuit board on circuit board are known.
- coil rolling of coil Coil supports the applied over the reel Bandzug the rolling process and significantly improves the straightness of the finished Strip profile in the longitudinal direction, ie in the rolling direction. Moreover, this ensures flexible rolls from coil to coil while maintaining high productivity, since the thickness profiles be generated continuously in the band.
- a measure, the deviation from the ideal gap - caused by the deflection Rolling - to correct, consists in crowning the roll bale. This includes is understood the barrel-shaped or bulbous execution of the roll barrel. With this type of correction, it is possible to use only the work rolls, only the back-up rolls or to bump both the work rolls and the backup rolls. The bowing should be the deflection, which by the rolling forces and the own weight of the rollers is compensated, so that the gap between the Rolls again evenly, d. H. is constant over the length of the rolls. In usually the correction of the bendline is not complete and the correction, because the roll shape or the crowning is not changeable, only for one certain operating case.
- both the strip thickness and the Planarity set constant, monitored via complex control loops and when occurring Deviations regulated by corresponding actuators.
- a regulatory process for compensating the rolling force induced rolling deflection in conventional Strip rolling process is known for example from DE 22 64 333 C3.
- Such complex control circuits can also be used in flexible rolling become. The problem is that it is in the regulation of a certain response time and a certain amount of time is needed until the regulation has responded and the effect of a disturbance change by the effect of the regulation within the measuring and control accuracy is regulated.
- the present invention further relates to a method for flexible rolling of a Metal strip, wherein the metal strip is guided during the rolling process by a roll gap formed between two work rolls and thus adjustable, that over the length of the metal strip band sections with different tape thickness be achieved and wherein the metal strip is directed to the flexible rolling becomes.
- a rolling process Downstream straightening may be required to meet the requirements for further processing To ensure straightness or flatness of the metal strip. This judging can be done for example by bending or stretch bending.
- the input and output gap adjusted and depending on the number of straightening rollers, the metal strip or Richtgut between the staggered straightening or bending rollers one subjected to multiple bending back and forth with decreasing curvature.
- the upper leveler set is employed so that the remaining residual stress is minimized in straightening or to be straightened rolling stock.
- the first elastic-plastic bending must be greater as the largest curvature that existed in the initial state of the Richtgutes. About one further decaying elastic-plastic bending back and forth can the curvature in the Richtgut be further and further reduced.
- the last elastic-plastic bending process must be designed so that the straightening after the elastic springback is no longer curved.
- Object of the present invention is a method of the type described above To provide type for flexible rolling of a metal strip, in which no unwanted deviations in the length and / or thickness profile of the finished rolled and optionally directional rolling yield.
- the previously derived and described object is in a method of the beginning described type according to the invention essentially solved in that a Compensation of the temperature influence on the metal band during the Rolling is performed to deviations from the target thickness and / or desired length the individual band sections at a given end temperature of the metal strip to avoid.
- a Compensation of the temperature influence on the metal band during the Rolling is performed to deviations from the target thickness and / or desired length the individual band sections at a given end temperature of the metal strip to avoid.
- the individual band sections are thus deliberately shorter than the predetermined desired length the directional metal strip or thicker than the predetermined target thickness of the directed Rolled metal strip, since after straightening the length of the individual band sections increases and decreases in thickness.
- the invention thus provides a targeted Compensation or consideration of the directional influence already during the flexible Rolling before, so deviations of the directed profile from the target profile to avoid the metal band. So it becomes the profile of the metal band during the rolling process modified so that the result of the later straightening process the desired target profile is.
- the compensation of the directional influence during rolling takes place taking into account the knowledge of the profile change of the rolling stock during straightening.
- the above-described compensations can be controlled on the basis of both Model as well as regulating be performed in the compensation of the temperature influence preferably based on the actual temperature of the metal strip or another parameter representing the temperature, such as. B. change in length a reference route, as well as a combination of these two possibilities.
- the controlling intervention is always immediately available at the moment when a change in the roll gap is made, as a rule due to the required response and control time does not respond directly can, while the regulatory intervention immediately after the change of Rolling gap should be made.
- the Compensation during the flexible rolling preferably carried out such that after the rolling process, the desired geometry of the rolled metal strip at room temperature of about 20 ° C is reached.
- the particular advantage is to combine the compensation according to the invention with a controlling and a subsequent regulatory action to achieve not only the desired desired geometry in terms of thickness and length of the individual band sections at a given final temperature, but at the same time good flatness of the metal strip.
- the invention further provides that during each change of the roll gap or immediately thereafter the bending lines of the work rolls are controlled in dependence on the set roll gap to achieve the flatness of the metal strip.
- the knowledge of the bending line change can follow from the given geometry, but can in particular be obtained empirically, namely the fact that corresponding measured variables are returned during the rolling process.
- the bending line is adjusted directly as a function of the respective roll gaps by applying, ie increasing or reducing, certain bending-back forces in order to obtain a uniform gap dimension along the length of the roll gap.
- Corresponding to this are to compensate for an imprecision of Metal band adapted to the particular load case bending forces on the work rolls and / or intermediate rolls and / or back-up rolls applied as well a work roll bend and / or an intermediate and work roll bend and / or to achieve a support and work roll bend.
- the aforementioned control or regulation may preferably be combined with the abovementioned employment and / or and / or support roll bending, since here - the traversing speed the nip accordingly - fast changes can be realized, what just when flexible rolling with sometimes very short tape sections is important. Conceivable, however, would be other ways to influence the flatness, z. B. by moving intermediate rolls in the Six High Mill frame, by hydraulic supported rollers or by the cross-rolling. But the goal is in everyone Case, a flat, flexibly rolled strip with predetermined target geometry at final temperature and at the same time the reelability of such metal bands improve or optimize.
- the optical measurement of the flatness can be directly behind the work rolls realize in a simple way.
- the planarity of the metal strip becomes preferably over the entire width of the metal strip behind the nip for each Length increment measured.
- the Measurement of the flatness over the entire width of the metal strip distributed Laserdikkenmeßstationen are provided and that the laser thickness measurement via triangulation he follows.
- the laser thickness measurement over the entire width of the metal strip allows in a simple way online optimization of the bending line of the work rolls.
- the laser thickness measurement via triangulation made possible by the small measurement spot and the high measuring frequencies of 1 kHz and more even with short tape sections of about 50 mm in length determining the cross profile.
- FIGS. 1 and 2 a part of a roll stand 1 on the one hand without counterbending (FIG. 1) and on the other hand with counter-bending (FIG. 2).
- a cylindrical work roll 2 with roll barrel 3 and bearing pins 4, 5, the are stored in bearings 6, 7.
- a support roller 8 with a cylindrical support roll bale 9 and bearing journals 10, 11, which in Bearings 12, 13 are stored.
- the upper rollers of the roll stand 1 are not shown.
- the two lower corresponding rollers namely a lower work roll and a lower back-up roll. Between the two work rolls is the nip S.
- Fig. 1 an application case when rolling a metal strip, not shown, shown in which on the work roll 2, a rolling force F W is exercised.
- the rolling force F W causes an elastic deflection of the work roll 2, so that the bending line B of the work roll 2 results.
- the rolling force F W not only leads to a deflection of the work roll 2, but also to a deflection of the support roller 8, but this is not shown in detail.
- Fig. 2 the state of the work roll 2 and the support roller 8 is shown with a counter-bend.
- the nip S has, in contrast to the state shown in Figure 1, a constant, uniform gap; So realized is an at least substantially constant constant distance between the two facing surfaces of the work rolls.
- the work roll 2 is not bent.
- the rolling force F W counteract against the back-up roller 8 applied bending forces F B.
- the bending line B that of the central axis runs the work roll 2 corresponds, parallel to the outside of the work roll 2. At a this is not the case with domed roll barrels. In this case is at one over the Length of the work roll constant nip in contrast to the illustration according to Fig. 2, the work roll is bent, although the limiting the nip Line or surface of the work roll is horizontal.
- the flexible rolling of a metal strip is performed so that the nip S is selectively changed during the rolling process to a predetermined change in thickness to achieve the metal band over its length. It is essential, that during setting of the roll gap S or immediately thereafter Bending lines B of the work rolls 2 as a function of the set roll gap for Achieving the flatness of the metal strip to be controlled. This is through the knowledge Bend line dependence of the various roll gaps possible. hereby becomes the deviation caused due to the different nips compensated by the ideal gap.
- predetermined back bending forces F B are applied to the back-up rolls 8 in response to the various roll nips to achieve a working and back-up roll bend.
- bending forces F B are applied to the work rolls 2 to control the unevenness.
- a measured value acquisition is initially made via appropriate measuring means. Both the longitudinal and the transverse profile are measured. Subsequently, the longitudinal profile or cross profile recognition, whereby the control deviation between the actual and setpoint of the respective controlled variable is determined. The respective correction values are then fed to a control loop.
- the change ⁇ h of the thickness of the metal strip is corrected to the predetermined target value according to the predetermined setpoint. For this purpose, a corresponding change ⁇ S of the roll gap is required. Of the change in the roll gap S, in turn, in turn depend on the respective work rolls 2 applied bending-back forces F B.
- the method described above does not take into account the influence of temperature on the metal strip during the rolling process.
- the invention Method for flexible rolling of a metal strip runs in such a way that the nip and / or the rolling speed during the rolling process influenced is, to the influence of temperature during rolling, the thickness and length influencing of the metal strip has the consequence to compensate. Again, this is first performed a profile recognition, with deviations are detected. By changing the roll gap and / or the feed movement or the Rolling speed can this change in length and at the same time the change in thickness be specifically compensated. As can be seen from the control circuit shown in FIG 15 results, the roll gap control takes place as a function of the measured longitudinal profiles and actual temperatures of the rolling stock.
- the method described above does not yet consider the profile change the metal band during straightening of the metal band following the flexible Rollers.
- the inventive method for flexible rolling under consideration the directional influence is such that the nip and / or the rolling speed is specifically influenced during the rolling process to the at Align occurring profile change already during the rolling process to compensate.
- the nip and / or the feed rate of the rolling speed are changed via a control and / or regulating circuit such that itself a comparison with the directed nominal profile shortened and thicker profile of the metal strip results, which corresponds to the predetermined target profile after straightening.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Description
- Fig. 1
- eine schematische Darstellung eines Teils eines Walzgerüstes ohne Gegenbiegung,
- Fig. 2
- eine Ansicht des Walzgerüstes aus Fig. 1 mit Gegenbiegung,
- Fig. 3
- die Darstellung eines Regelkreises und
- Fig. 4
- die Darstellung eines weiteren Regelkreises.
Claims (15)
- Verfahren zum flexiblen Walzen eines Metallbandes, wobei das Metallband während des Walzprozesses geführt wird durch einen zwischen zwei Arbeitswalzen (3) gebildeten und so einstellbaren Walzspalts, daß über die Länge des Metallbandes Bandabschnitte mit unterschiedlicher Banddicke erzielt werden, dadurch gekennzeichnet, daß eine Kompensation des auf das Metallband wirkenden Temperatureinflusses während des Walzens durchgeführt wird, um Abweichungen von der Solldicke und/oder Sollänge der einzelnen Bandabschnitte bei vorgegebener Endtemperatur des Metallbandes zu vermeiden.
- Verfahren zum flexiblen Walzen eines Metallbandes, wobei das Metallband während des Walzprozesses geführt wird durch einen zwischen zwei Arbeitswalzen (3) gebildeten und so einstellbaren Walzspalts; daß über die Länge des Metallbandes Bandabschnitte mit unterschiedlicher Banddicke erzielt werden, und wobei das Metallband nach dem flexiblen Walzen gerichtet wird, insbesondere nach Anspruch 1, dadurch gekennzeichnet, daß eine Kompensation des auf das Metallband wirkenden Richteinflusses während des Walzens durchgeführt wird, um Abweichungen von der Solldicke und/oder Sollänge der einzelnen gerichteten Bandabschnitte des Metallbandes zu vermeiden.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Kompensation über eine Steuerung und/oder eine Regelung durchgeführt wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Regelung auf der Grundlage der Ist-Temperatur des Metallbandes und/oder eines Parameters erfolgt, aus dem die Ist-Temperatur ableitbar ist, wie insbesondere die Längenänderung einer Referenzstrecke des Metallbandes.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß zur Kompensation der Walzspalt und/oder die Walzgeschwindigkeit während des Walzen gezielt beeinflußt wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die vorgegebene Endtemperatur des Metallbandes die Raumtemperatur, vorzugsweise etwa 20 °C ist.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß während jedes Veränderns des Walzspalts oder unmittelbar danach die Biegelinien der Arbeitswalzen in Abhängigkeit vom veränderten Walzspalt zur Erzielung der Planheit des Metallbandes gesteuert werden.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die Planheit im Anschluß an die Steuerung und insbesondere unmittelbar nach der Veränderung des Walzspalts über wenigstens einen Regelkreis geregelt wird.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß kurz vor oder während des erneuten Verändern des Walzspalts die Regelung der Planheit unterbrochen wird und die Biegelinien der Arbeitswalzen in Abhängigkeit der erneuten Walzspaltveränderung für den neuen Walzfall zur Erzielung der Planheit erneut gesteuert werden.
- Verfahren nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, daß zur Steuerung in Abhängigkeit von den unterschiedlichen Walzspalten vorbestimmte Rückbiegekräfte auf die Arbeits- und/oder Zwischen- und/oder Stützwalzen aufgebracht werden, um eine Arbeitswalzenbiegung, eine Zwischen- und Arbeitswalzenbiegung und/oder eine Stütz- und Arbeitswalzenbiegung zu erzielen.
- Verfahren nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, daß zum Ausregeln einer Unplanheit des Metallbandes dem jeweiligen Belastungsfall angepaßte Rückbiegekräfte auf die Arbeits- und/oder Zwischen- und/oder Stützwalzen aufgebracht werden, um eine Arbeitswalzenbiegung, eine Zwischen- und Arbeitswalzenbiegung und/oder eine Stütz- und Arbeitswalzenbiegung zu erzielen.
- Verfahren nach einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, daß die Messung der Planheit berührungslos, z. B. optisch erfolgt.
- Verfahren nach einem der Ansprüche 8 bis 12, dadurch gekennzeichnet, daß die Planheit des Metallbandes über die gesamte Breite des Metallbandes hinter dem Walzspalt für jedes Längeninkrement gemessen wird.
- Verfahren nach Anspruch 12 oder 13, dadurch gekennzeichnet, daß zur Messung der Planheit über die gesamte Breite des Metallbandes verteilte Laserdickenmeßstationen vorgesehen sind und daß die Laserdickenmessung über Triangulation erfolgt.
- Verfahren nach einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, daß die Messung der Planheit berührend, z. B. über eine Stressometerrolle erfolgt.
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19936522 | 1999-08-06 | ||
DE19936522 | 1999-08-06 | ||
DE19951889 | 1999-10-28 | ||
DE19951889 | 1999-10-28 | ||
DE19954425 | 1999-11-11 | ||
DE19954425 | 1999-11-11 | ||
DE19962754 | 1999-12-23 | ||
DE19962754A DE19962754A1 (de) | 1999-08-06 | 1999-12-23 | Verfahren zum flexiblen Walzen eines Metallbandes |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1080800A2 EP1080800A2 (de) | 2001-03-07 |
EP1080800A3 EP1080800A3 (de) | 2003-01-22 |
EP1080800B1 true EP1080800B1 (de) | 2005-01-12 |
Family
ID=27438974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00116083A Expired - Lifetime EP1080800B1 (de) | 1999-08-06 | 2000-07-27 | Verfahren zum flexiblen Walzen eines Metallbandes |
Country Status (4)
Country | Link |
---|---|
US (1) | US6336350B1 (de) |
EP (1) | EP1080800B1 (de) |
JP (1) | JP2001071013A (de) |
AT (1) | ATE286789T1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007062734A1 (de) | 2005-12-02 | 2007-06-07 | Voestalpine Automotive Gmbh | Verfahren und vorrichtung zum aufheizen von stahlbauteilen in einem durchlaufofen |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19846900C2 (de) * | 1998-10-12 | 2000-08-10 | Thyssenkrupp Stahl Ag | Verfahren und Vorrichtung zum Herstellen eines Metallbandes für abzulängende Tailored Blanks |
DE10246164B4 (de) * | 2002-10-02 | 2014-03-20 | Benteler Automobiltechnik Gmbh | Verfahren zum Herstellen von Strukturbauteilen |
DE102007013739B3 (de) * | 2007-03-22 | 2008-09-04 | Voestalpine Stahl Gmbh | Verfahren zum flexiblen Walzen von beschichteten Stahlbändern |
EP3168570A1 (de) | 2015-11-10 | 2017-05-17 | Primetals Technologies France SAS | Methode zum messen der planheit eines metallprodukts, und entsprechende vorrichtung |
ES2950107T3 (es) * | 2016-12-30 | 2023-10-05 | Outokumpu Oy | Método y dispositivo de laminación flexible de bandas de metal |
CN114273463B (zh) * | 2020-09-27 | 2024-03-08 | 宝山钢铁股份有限公司 | 钢板自动多道次矫直方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5035900B2 (de) * | 1972-03-28 | 1975-11-19 | ||
DE2264333C3 (de) | 1973-12-17 | 1981-11-26 | Schloemann-Siemag Ag, 4000 Duesseldorf | Regelungsvorrichtung zum Ausregeln der walzkraftbedingten Walzendurchbiegung in einem Walzgerüst |
DE2554246A1 (de) * | 1975-12-03 | 1977-06-16 | Achenbach Buschhuetten Gmbh | Verfahren und einrichtung zum regeln der planheit beim walzen von bandmaterial |
JPS58135711A (ja) * | 1982-02-05 | 1983-08-12 | Toshiba Corp | 連続圧延機の制御方法およびその制御装置 |
JPS61172603A (ja) * | 1985-01-29 | 1986-08-04 | Sumitomo Metal Ind Ltd | 厚板圧延法 |
JPS62158825A (ja) * | 1985-12-28 | 1987-07-14 | Nippon Steel Corp | 熱間圧延鋼板の冷却方法 |
JPS63260604A (ja) * | 1987-04-20 | 1988-10-27 | Nippon Steel Corp | 薄鋼板の連続熱間圧延方法 |
JP2584922Y2 (ja) * | 1992-03-17 | 1998-11-11 | 石川島播磨重工業株式会社 | 形状検出装置 |
FR2695049B1 (fr) * | 1992-09-03 | 1994-11-10 | Lorraine Laminage | Procédé et dispositif d'évaluation de la planéité d'une bande et ligne de fabrication d'une bande en continu comportant un dispositif d'évaluation de la planéité de la bande. |
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 |
DE4309986A1 (de) | 1993-03-29 | 1994-10-06 | Schloemann Siemag Ag | Verfahren und Vorrichtung zum Walzen eines Walzbandes |
BR9603035A (pt) * | 1995-07-10 | 1998-05-05 | Kawasaki Steel Co | Método e aparelho para laminação a quente de acabamento contínua de tiras de aço |
JP3116786B2 (ja) | 1995-10-31 | 2000-12-11 | 住友金属工業株式会社 | 熱延鋼帯の仕上圧延における仕上温度制御方法 |
-
2000
- 2000-07-27 AT AT00116083T patent/ATE286789T1/de not_active IP Right Cessation
- 2000-07-27 EP EP00116083A patent/EP1080800B1/de not_active Expired - Lifetime
- 2000-08-03 JP JP2000235782A patent/JP2001071013A/ja active Pending
- 2000-08-07 US US09/634,718 patent/US6336350B1/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007062734A1 (de) | 2005-12-02 | 2007-06-07 | Voestalpine Automotive Gmbh | Verfahren und vorrichtung zum aufheizen von stahlbauteilen in einem durchlaufofen |
Also Published As
Publication number | Publication date |
---|---|
EP1080800A3 (de) | 2003-01-22 |
ATE286789T1 (de) | 2005-01-15 |
EP1080800A2 (de) | 2001-03-07 |
US6336350B1 (en) | 2002-01-08 |
JP2001071013A (ja) | 2001-03-21 |
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