WO2004012878A1 - Method and device for the continuous production of metallic strips - Google Patents
Method and device for the continuous production of metallic strips Download PDFInfo
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- WO2004012878A1 WO2004012878A1 PCT/EP2003/007464 EP0307464W WO2004012878A1 WO 2004012878 A1 WO2004012878 A1 WO 2004012878A1 EP 0307464 W EP0307464 W EP 0307464W WO 2004012878 A1 WO2004012878 A1 WO 2004012878A1
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- Prior art keywords
- strip
- rolling
- chemical treatment
- heating
- rolling process
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Classifications
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- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B1/24—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/28—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
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- 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
- B21B15/0035—Forging or pressing devices as units
- B21B15/005—Lubricating, cooling or heating means
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- 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
- B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
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- 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
- B21B45/004—Heating the product
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- 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
- B21B45/04—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 de-scaling, e.g. by brushing
- B21B45/06—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 de-scaling, e.g. by brushing of strip material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
- Y10T29/49991—Combined with rolling
Definitions
- the invention relates to a process for the continuous production of a metallic, preferably cold-rolled strip, in particular a stainless steel strip, the strip to be produced being passed in a conveying direction through a device in which the strip is subjected to a rolling process, heating and chemical treatment. Furthermore, the invention relates to a device, in particular for performing the method.
- a metal strip passes through a production device in which various processes are carried out on the strip.
- the strip is reduced in thickness in a rolling process. It can also be followed by heat treatment, which gives the strip special material properties.
- the strip must have a scale-free surface, which is why it passes a pickling line in which the scale is removed by means of a chemical treatment.
- the hot-rolled steel strip For further processing - e.g. B. by cold rolling, for a metallic coating or direct processing into an end product - the hot-rolled steel strip must have a scale-free surface. Therefore, the scale created during hot rolling and during the subsequent cooling must be removed completely. This is usually done by a pickling process, with the scale consisting of the various iron oxides (FeO, Fe 3 O 4 , Fe 2 O 3 ) or, in the case of stainless steels, also of chromium-rich iron oxides, depending on the steel quality, using various acids (e.g. hydrochloric acid, sulfuric acid) , Nitric acid or mixed acid) is dissolved at elevated temperatures by chemical reaction with the acid.
- various acids e.g. hydrochloric acid, sulfuric acid
- Nitric acid Nitric acid
- a method or a device of the generic type is known from DE 100 22 045 C1. It is disclosed there that a strip is guided through a pickling device, a rolling unit being arranged in front of and behind the pickling device. In the conveying direction of the strip behind the second rolling unit, the strip passes through an annealing furnace and then a pickling tank in which the scale is removed from the surface of the strip. Before winding the finished strip to this extent, it can still be processed in a skin pass mill.
- WO 00/37189 and WO 00/37190 disclose a device for producing a metal strip, in which the strip is first reduced in thickness in a multi-stand rolling mill. The strip then goes into an annealing furnace; in the further course the strip is led through a pickling device. Before the strip is wound up, a rolling operation can also follow here, but this only makes a slight reduction in thickness on the strip.
- US 2001/0037667 A1 discloses a similar device for producing a metal strip. However, there is no heating of the belt here. The strip is only passed through a rolling mill in a pickling line after descaling.
- the equipment downstream of the rolling mill and here in particular the annealing furnace and the pickling line, is adapted in its dimensions to the strip thickness typically reduced by 30 to 40% by the rolling process Need to become; As the strip is already thinner but longer, the annealing furnace and pickling line must also be designed to be long enough, which leads to high system costs.
- the invention is therefore based on the object of creating a method and an associated device of the type mentioned at the outset with which it is possible to avoid the disadvantages mentioned, which in particular means greater productivity and economy in the production of a Tape to be achieved; the surface quality of the finished strip is also to be improved.
- this object is achieved in that the rolling process is carried out only after the strip has been heated and after the chemical treatment.
- the heating of the strip, the chemical treatment of the strip and the rolling process are preferably carried out in this order.
- the rolling process is preferably a tandem rolling process.
- the rolling process here means that the thickness of the strip is reduced significantly, preferably by at least 20%.
- the chemical treatment of the strip is preferably a pickling process.
- the inventive device for the continuous production of a metallic, cold-rolled strip has a device for heating, i. H. in particular for annealing the strip, a device for chemically treating the strip and a device for rolling the strip.
- the device for rolling the strip in the conveying direction is arranged behind the device for heating the strip and the device for chemically treating the strip, the device for rolling the strip having at least one tandem rolling train.
- This consists of several rolling stands, which can be designed as a 6-high rolling mill or as a Z-high rolling mill. Apart from this rolling device, no further device is required to reduce the thickness of the strip.
- a stretch-leveling unit can also be arranged between the device for heating the strip (annealing furnace) and the device for chemical treatment of the strip (pickling line). Furthermore, a metal grain blasting unit can be arranged between the annealing furnace and the pickling line. A trimming unit can also be arranged in the conveying direction behind the device for chemical treatment of the tape in order to cut the tape laterally.
- the device has at least one, preferably three, belt stores.
- the manufacturing device explained can also be operated as a combined hot and cold strip annealing and pickling line with an integrated rolling mill (tandem mill).
- a degreasing device can additionally be arranged in the conveying direction in front of the device for heating the belt, in particular in front of the infeed belt store.
- FIG. 1 An embodiment of the invention is shown.
- the single figure shows schematically a device for producing a stainless steel strip.
- the figure shows a device 2 on which a metal strip 1 (metal strand) is processed.
- the belt 1 is in the conveying direction R - d. H. in the figure from left to right - guided by the device 2, a continuous passage of the belt 1 (passage with a largely constant belt speed) being sought.
- the belt 1 is fed to the device 2 in an inlet section 13, not shown in detail.
- the tape 1 is unwound from an unwinding unit, not shown, and passed into the device 2.
- a degreasing device 12 follows in the conveying direction R, in which the belt surface is cleaned.
- the strip 1 then arrives in a strip store 9 (inlet store) which is positioned below a device 3 for heating the strip 1 (annealing furnace). It can be achieved via the tape store 9 that Continuous running of the belt is achieved even with minor external disturbances in the belt feed.
- the strip 1 is subjected to a heat treatment in the annealing furnace 3. Then there is a stretch leveling unit 6, in which the strip 1 is smoothed. A metal grain blasting unit 7 is arranged downstream of the stretch-leveling unit 6.
- a device 4 for the chemical treatment of the strip 1 is arranged, namely a pickling line, in which the strip 1 is guided through pools which are filled with acid.
- a strip store 11 (intermediate store) is arranged below the pickling line 4. From this the tape 1 runs into a trimming unit 8 in which the sides of the tape 1 are cut. The strip 1 passes from the trimming unit 8 via a further strip store 10 (outlet store) to the device 5 for rolling the strip 1.
- This device 5 is designed as a tandem rolling mill. There are three rolling stands 5a, 5b and 5c arranged one behind the other, in which the strip 1 is rolled and its thickness is thereby reduced.
- An outlet section 14 is arranged behind the tandem rolling mill 5 and has a winding unit (not shown) with which the finished strip 1 can be wound up.
- the tandem rolling mill 5 has three roll stands 5a, 5b and 5c, which can be designed in the form of a multi-roll cold rolling mill, a 6-high rolling mill or a Z-high rolling mill.
- the fact that the thickness of the strip 1 is only reduced in the only device 5 for rolling the strip 1 at the end of the device 2 shows the strip 1 in front of the tandem mill 5 a relatively large thickness, namely the thickness with which the strip 1 enters the device 2.
- the consequence of this is that the overall length of both the annealing furnace 3 and the pickling line 4 can be kept relatively short.
- Both the annealing furnace 3 and the pickling line 4 can thus be designed for the original thickness of the strip 1 with which the strip 1 enters the device 2.
- the thickness can be reduced without prior annealing, which leads to a smaller maximum thickness reduction of a maximum of 30 to 40%.
- the maximum thickness reduction of the strip 1 per pass through the device 2 depends only on the materials and the performance of the tandem rolling mill 5; no consideration has to be given to the unannealed strip.
- a roll stand of the tandem rolling mill 5 can be designed such that the strip 1 can be treated during a final annealing.
- the descaled and preferably already trimmed strip - following the device 2 - can run continuously into a downstream device (hot-dip galvanizing system, etc.) without intermediate storage and with uniform strip tension.
- the finished strip can be alternately wound up with two reels behind the downstream device and divided with scissors. LIST OF REFERENCE NUMBERS
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Manufacturing Of Electric Cables (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Coating With Molten Metal (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
Verfahren und Vorrichtung zur kontinuierlichen Herstellung metallischer BänderMethod and device for the continuous production of metallic strips
Die Erfindung betrifft ein Verfahren zum kontinuierlichen Herstellen eines metallischen, vorzugsweise kaltgewalzten Bandes, insbesondere eines Edelstahlbandes, wobei das zu fertigende Band in eine Förderrichtung durch eine Vorrichtung geführt wird, in der das Band einem Walzprozess, einer Erwärmung und einer chemischen Behandlung unterzogen wird. Des weiteren betrifft die Erfindung eine Vorrichtung, insbesondere zur Durchführung des Verfahrens.The invention relates to a process for the continuous production of a metallic, preferably cold-rolled strip, in particular a stainless steel strip, the strip to be produced being passed in a conveying direction through a device in which the strip is subjected to a rolling process, heating and chemical treatment. Furthermore, the invention relates to a device, in particular for performing the method.
Bei der Herstellung kaltgewalzter Bänder, insbesondere von Edelstahlbändern, durchläuft ein Metallband eine Fertigungsvorrichtung, in der verschiedene Prozesse am Band vorgenommen werden. Dabei wird das Band in einem Walzpro- zess in seiner Dicke reduziert. Weiterhin kann sich eine Wärmebehandlung anschließen, mit der dem Band spezielle Werkstoffeigenschaften verliehen werden. Ferner muss das Band eine zunderfreie Oberfläche aufweisen, weshalb es eine Beizlinie passiert, in der mittels einer chemischen Behandlung der Zunder entfernt wird.In the production of cold-rolled strips, in particular stainless steel strips, a metal strip passes through a production device in which various processes are carried out on the strip. The strip is reduced in thickness in a rolling process. It can also be followed by heat treatment, which gives the strip special material properties. Furthermore, the strip must have a scale-free surface, which is why it passes a pickling line in which the scale is removed by means of a chemical treatment.
Für die Weiterverarbeitung - z. B. durch Kaltwalzen, für eine metallische Beschichtung oder die direkte Verarbeitung zu einem Endprodukt - muss das warmgewalzte Stahlband eine zunderfreie Oberfläche haben. Daher muss der beim Warmwalzen und während der nachfolgenden Abkühlung entstandene Zunder restlos entfernt werden. Dies erfolgt zumeist durch einen Beizprozess, wobei der aus den verschiedenen Eisenoxiden (FeO, Fe3O4, Fe2O3) oder bei nichtrostenden Stählen auch aus chromreichen Eisenoxiden bestehende Zunder je nach Stahlqualität mittels verschiedener Säuren (z. B. Salzsäure, Schwefelsäure, Salpetersäure oder Mischsäure) bei erhöhten Temperaturen durch chemische Reaktion mit der Säure gelöst wird. Vor dem Beizen ist bei Normalstahl meist noch eine zusätzliche mechanische Behandlung durch Streckbiegerichten erforderlich, um den Zunder aufzubrechen und somit ein schnelleres Eindringen der Säure in die Zunderschicht zu ermöglichen. Bei den wesentlich schwieriger zu beizenden nichtrostenden, austenitischen und ferritischen Stählen sind ein Glühen und eine mechanische Vorentzunderung des Bandes beim Beizprozess vorgeschaltet, um eine möglichst gut beizbare Bandoberfläche zu erzielen.For further processing - e.g. B. by cold rolling, for a metallic coating or direct processing into an end product - the hot-rolled steel strip must have a scale-free surface. Therefore, the scale created during hot rolling and during the subsequent cooling must be removed completely. This is usually done by a pickling process, with the scale consisting of the various iron oxides (FeO, Fe 3 O 4 , Fe 2 O 3 ) or, in the case of stainless steels, also of chromium-rich iron oxides, depending on the steel quality, using various acids (e.g. hydrochloric acid, sulfuric acid) , Nitric acid or mixed acid) is dissolved at elevated temperatures by chemical reaction with the acid. Before pickling normal steel is usually an additional mechanical treatment Bending straightening is required to break up the scale and thus allow the acid to penetrate the scale more quickly. In the case of the much more difficult to pickle stainless, austenitic and ferritic steels, annealing and mechanical pre-descaling of the strip are carried out in the pickling process in order to achieve a strip surface that is as good as possible.
Ein Verfahren bzw. eine Vorrichtung der gattungsgemäßen Art ist aus der DE 100 22 045 C1 bekannt. Dort ist offenbart, dass ein Band durch eine Beizeinrichtung geführt wird, wobei vor und hinter der Beizeinrichtung jeweils eine Walzeinheit angeordnet ist. In Förderrichtung des Bandes hinter der zweiten Walzeinheit durchläuft das Band einen Glühofen und anschließend ein Beizbecken, in dem der Zunder von der Bandoberfläche entfernt wird. Vor dem Aufwickeln des insoweit fertiggestellten Bandes kann dieses noch in einem Dressierwalzwerk abschließend bearbeitet werden.A method or a device of the generic type is known from DE 100 22 045 C1. It is disclosed there that a strip is guided through a pickling device, a rolling unit being arranged in front of and behind the pickling device. In the conveying direction of the strip behind the second rolling unit, the strip passes through an annealing furnace and then a pickling tank in which the scale is removed from the surface of the strip. Before winding the finished strip to this extent, it can still be processed in a skin pass mill.
Die WO 00/37189 und die WO 00/37190 offenbaren eine Vorrichtung zur Herstellung eines Metallbandes, bei dem das Band zunächst ein einer mehrgerü- stigen Walzstrasse in seiner Dicke reduziert wird. Anschließend gelangt das Band in einen Glühofen; im weiteren Verlauf wird das Band durch eine Beizvor- richtung geführt. Vor dem Aufwickeln des Bandes kann sich auch hier eine Walzoperation anschließen, die jedoch nur noch eine geringfügige Dickenreduzierung am Band vornimmt.WO 00/37189 and WO 00/37190 disclose a device for producing a metal strip, in which the strip is first reduced in thickness in a multi-stand rolling mill. The strip then goes into an annealing furnace; in the further course the strip is led through a pickling device. Before the strip is wound up, a rolling operation can also follow here, but this only makes a slight reduction in thickness on the strip.
Die US 2001/0037667 A1 offenbart eine ähnliche Vorrichtung zur Herstellung eines Metallbandes. Hier ist jedoch keine Erwärmung des Bandes vorgesehen. Das Band wird lediglich nach dem Entzundern in einer Beizlinie durch ein Walzwerk geführt.US 2001/0037667 A1 discloses a similar device for producing a metal strip. However, there is no heating of the belt here. The strip is only passed through a rolling mill in a pickling line after descaling.
Die vorbekannten Verfahren weisen den Nachteil auf, dass teilweise auf ver- zunderten bzw. auf nur teilentzunderten Oberflächen gewalzt werden muss.The previously known methods have the disadvantage that they have to be rolled partly on scaled surfaces or on only partly descaled surfaces.
Durch das Walzen auf diesen Bandoberflächen tritt ein wesentlich höherer Wal- zenverschleiß auf als bei der Walzung auf einer entzunderten Oberfläche. Weiterhin kann dadurch nicht die Oberflächenqualität erzeugt werden, wie sie vielfach gefordert wird, so dass aufwendige Nachbehandlungen notwendig sind.Rolling on these strip surfaces results in a significantly higher rolling zen wear than when rolling on a descaled surface. Furthermore, the surface quality cannot be produced as often required, so that extensive post-treatment is necessary.
Weiterhin ist es mit Blick auf die Wirtschaftlichkeit des in Rede stehenden Ver- fahrens sehr nachteilig, dass die dem Walzwerk nachfolgenden Einrichtungen, und hier namentlich der Glühofen und die Beizlinie, in ihren Ausmaßen der durch den Walzprozess typischerweise um 30 bis 40 % reduzierten Banddicke angepasst werden müssen; da das Band bereits dünner, jedoch länger ist, müssen auch der Glühofen und die Beizlinie entsprechend lang ausgelegt wer- den, was zu hohen Kosten der Anlage führt.Furthermore, with regard to the economy of the process in question, it is very disadvantageous that the equipment downstream of the rolling mill, and here in particular the annealing furnace and the pickling line, is adapted in its dimensions to the strip thickness typically reduced by 30 to 40% by the rolling process Need to become; As the strip is already thinner but longer, the annealing furnace and pickling line must also be designed to be long enough, which leads to high system costs.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren und eine zugehörige Vorrichtung der eingangs genannten Gattung zu schaffen, mit dem bzw. mit der es möglich ist, die genannten Nachteile zu vermeiden, womit insbeson- dere eine höhere Produktivität und Wirtschaftlichkeit bei der Herstellung eines Bandes erzielt werden sollen; weiterhin soll die Oberflächenqualität des gefertigten Bandes verbessert werden.The invention is therefore based on the object of creating a method and an associated device of the type mentioned at the outset with which it is possible to avoid the disadvantages mentioned, which in particular means greater productivity and economy in the production of a Tape to be achieved; the surface quality of the finished strip is also to be improved.
Die Lösung dieser Aufgabe durch die Erfindung ist verfahrensgemäß dadurch gekennzeichnet, dass der Walzprozess erst nach der Erwärmung des Bandes und nach der chemischen Behandlung durchgeführt wird.According to the method, this object is achieved in that the rolling process is carried out only after the strip has been heated and after the chemical treatment.
Mit dieser Vorgehensweise wird erreicht, dass in der Fertigungsanlage die drei Prozessschritte Walzen des Bandes auf die gewünschte Dicke, Durchführung einer Wärmebehandlung des Bandes durch einen Glühprozess und Entzundern des Bandes mittels Beizen erfolgen, wobei die obigen angesprochenen Nachteile nicht zutage treten: Da das Walzen des Bandes von der ursprünglichen auf die reduzierte, endgültige Dicke erst in Förderrichtung hinter dem Glühen und dem Beizen stattfindet, können sowohl der Glühofen als auch die Beizlinie in ihren jeweiligen Ausmaßen kleiner ausgelegt werden. Ferner erfolgt der genannte Walzprozess erst auf einer vollkommen entzunderten Bandoberfläche, so dass der Walzenverschleiß gering bleibt. Weiterhin entsteht durch den vorgeschlagenen Verfahrensablauf eine verbesserte Bandoberflächen-Qualität, ohne, dass weitergehende Maßnahmen ergriffen werden müssen.This procedure ensures that the three process steps of rolling the strip to the desired thickness, performing a heat treatment of the strip by means of an annealing process and descaling the strip by means of pickling take place in the production plant, the disadvantages mentioned above not being apparent: since the rolling of the Strip from the original to the reduced, final thickness only in the conveying direction after annealing and pickling, both the annealing furnace and the pickling line can be designed smaller in their respective dimensions. Furthermore, the mentioned rolling process only takes place on a completely descaled strip surface, so that the roller wear remains low. Furthermore, the proposed process sequence results in an improved strip surface quality without the need for further measures.
Es wird vorgeschlagen, dass vorzugsweise die Erwärmung des Bandes, die chemische Behandlung des Bandes und der Walzprozess in dieser Reihenfolge durchgeführt werden. Bei dem Walzprozess handelt es sich bevorzugt um einen Tandem-Walzprozess. Generell ist unter Walzprozess hier zu verstehen, dass das Band durch ihn in seiner Dicke wesentlich, vorzugsweise mindestens um 20 %, reduziert wird. Wie bereits oben angesprochen, handelt es sich bei der chemischen Behandlung des Bandes bevorzugt um einen Beizprozess.It is suggested that the heating of the strip, the chemical treatment of the strip and the rolling process are preferably carried out in this order. The rolling process is preferably a tandem rolling process. In general, the rolling process here means that the thickness of the strip is reduced significantly, preferably by at least 20%. As already mentioned above, the chemical treatment of the strip is preferably a pickling process.
Die erfindungsgemäße Vorrichtung zum kontinuierlichen Herstellen eines metallischen, kaltgewalzten Bandes weist eine Einrichtung zum Erwärmen, d. h. insbesondere zum Glühen, des Bandes, eine Einrichtung zum chemischen Be- handeln des Bandes und eine Einrichtung zum Walzen des Bandes auf. Erfindungsgemäß ist vorgesehen, dass die Einrichtung zum Walzen des Bandes in Förderrichtung hinter der Einrichtung zum Erwärmen des Bandes und der Einrichtung zum chemischen Behandeln des Bandes angeordnet ist, wobei die Einrichtung zum Walzen des Bandes mindestens eine Tandem-Walzstrasse auf- weist. Diese besteht aus mehreren Walzgerüsten, die als Walzwerk des Typs 6- high oder als Walzwerk des Typs Z-high ausgebildet sein können. Außer dieser Walzeinrichtung ist keine weitere Einrichtung zwecks Dickenreduzierung des Bandes erforderlich.The inventive device for the continuous production of a metallic, cold-rolled strip has a device for heating, i. H. in particular for annealing the strip, a device for chemically treating the strip and a device for rolling the strip. According to the invention, it is provided that the device for rolling the strip in the conveying direction is arranged behind the device for heating the strip and the device for chemically treating the strip, the device for rolling the strip having at least one tandem rolling train. This consists of several rolling stands, which can be designed as a 6-high rolling mill or as a Z-high rolling mill. Apart from this rolling device, no further device is required to reduce the thickness of the strip.
Zur Qualitätsverbesserung kann ferner zwischen der Einrichtung zum Erwärmen des Bandes (Glühofen) und der Einrichtung zum chemischen Behandeln des Bandes (Beizlinie) eine Streckrichteinheit angeordnet sein. Weiterhin kann zwischen dem Glühofen und der Beizlinie eine Metallkorn-Strahleinheit angeordnet werden. In Förderrichtung hinter der Einrichtung zum chemischen Behandeln des Bandes kann ferner eine Besäumeinheit angeordnet werden, um das Band seitlich zu beschneiden.To improve the quality, a stretch-leveling unit can also be arranged between the device for heating the strip (annealing furnace) and the device for chemical treatment of the strip (pickling line). Furthermore, a metal grain blasting unit can be arranged between the annealing furnace and the pickling line. A trimming unit can also be arranged in the conveying direction behind the device for chemical treatment of the tape in order to cut the tape laterally.
Die Einhaltung eines möglichst gleichmäßigen Laufs des Bandes durch die Fer- tigungsanlage wird dadurch erleichtert, dass die Vorrichtung mindestens einen, vorzugsweise drei Bandspeicher aufweist.Maintaining that the belt runs as evenly as possible through the production system is facilitated in that the device has at least one, preferably three, belt stores.
Je nach der Produktionsmenge des Bandes kann die erläuterte Fertigungsvorrichtung auch als kombinierte Warm- und Kaltbandglüh- und -beizlinie mit integrierter Walzstrasse (Tandemstraße) betrieben werden. Um dies zu begünstigen, kann zusätzlich in Förderrichtung vor der Einrichtung zum Erwärmen des Bandes, insbesondere vor dem Einlauf-Bandspeicher, eine Entfettungseinrichtung angeordnet werden.Depending on the production volume of the strip, the manufacturing device explained can also be operated as a combined hot and cold strip annealing and pickling line with an integrated rolling mill (tandem mill). In order to favor this, a degreasing device can additionally be arranged in the conveying direction in front of the device for heating the belt, in particular in front of the infeed belt store.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Die einzige Figur zeigt schematisch eine Vorrichtung zur Herstellung eines Edelstahlbandes.In the drawing, an embodiment of the invention is shown. The single figure shows schematically a device for producing a stainless steel strip.
In der Figur ist eine Vorrichtung 2 zu sehen, auf der ein Metallband 1 (Metall- sträng) verarbeitet wird. Dabei wird das Band 1 in Förderrichtung R - d. h. in der Figur von links nach rechts - durch die Vorrichtung 2 geführt, wobei ein kontinuierlicher Durchlauf des Bandes 1 (Durchlauf mit weitgehend konstanter Bandgeschwindigkeit) angestrebt wird.The figure shows a device 2 on which a metal strip 1 (metal strand) is processed. The belt 1 is in the conveying direction R - d. H. in the figure from left to right - guided by the device 2, a continuous passage of the belt 1 (passage with a largely constant belt speed) being sought.
In einem nicht näher dargestellten Eintrittsabschnitt 13 wird das Band 1 der Vorrichtung 2 zugeführt. Das Band 1 wird dabei von einer nicht dargestellten Abwickeleinheit abgewickelt und in die Vorrichtung 2 geleitet. In Förderrichtung R schließt sich eine Entfettungseinrichtung 12 an, in der die Bandoberfläche gereinigt wird. Anschließend gelangt das Band 1 in einen Bandspeicher 9 (Ein- laufspeicher), der unterhalb einer Einrichtung 3 zum Erwärmen des Bandes 1 (Glühofen) positioniert ist. Über den Bandspeicher 9 kann erreicht werden, dass auch bei geringfügigen äußeren Störungen in der Bandzuführung ein kontinuierlicher Lauf des Bandes erreicht wird.The belt 1 is fed to the device 2 in an inlet section 13, not shown in detail. The tape 1 is unwound from an unwinding unit, not shown, and passed into the device 2. A degreasing device 12 follows in the conveying direction R, in which the belt surface is cleaned. The strip 1 then arrives in a strip store 9 (inlet store) which is positioned below a device 3 for heating the strip 1 (annealing furnace). It can be achieved via the tape store 9 that Continuous running of the belt is achieved even with minor external disturbances in the belt feed.
Im Glühofen 3 wird das Band 1 einer Wärmebehandlung unterzogen. Anschießend gelangt es zu einer Streckrichteinheit 6, in der das Band 1 geglättet wird. Der Streckrichteinheit 6 nachgeordnet ist eine Metallkorn-Strahleinheit 7.The strip 1 is subjected to a heat treatment in the annealing furnace 3. Then there is a stretch leveling unit 6, in which the strip 1 is smoothed. A metal grain blasting unit 7 is arranged downstream of the stretch-leveling unit 6.
In Förderrichtung R hinter der Metallkorn-Strahleinheit 7 ist eine Einrichtung 4 zum chemischen Behandeln des Bandes 1 angeordnet, nämlich eine Beizlinie, in der das Band 1 durch Becken geführt wird, die mit Säure gefüllt sind. Mittels des Beizvorgangs kann die Zunderschicht auf der Oberfläche des Bandes 1 entfernt und dem Band 1 so eine verbesserte Oberflächenqualität verliehen werden.In the conveying direction R behind the metal grain blasting unit 7, a device 4 for the chemical treatment of the strip 1 is arranged, namely a pickling line, in which the strip 1 is guided through pools which are filled with acid. By means of the pickling process, the scale layer on the surface of the strip 1 can be removed and the strip 1 can thus be given an improved surface quality.
Unterhalb der Beizlinie 4 ist ein Bandspeicher 11 (Zwischenspeicher) angeord- net. Von diesem läuft das Band 1 in eine Besäumeinheit 8, in der die Seiten des Bandes 1 beschnitten werden. Von der Besäumeinheit 8 gelangt das Band 1 über einen weiteren Bandspeicher 10 (Auslaufspeicher) zur Einrichtung 5 zum Walzen des Bandes 1. Diese Einrichtung 5 ist als Tandem-Walzstraße ausgeführt. Es sind drei hintereinander angeordnete Walzgerüste 5a, 5b und 5c vor- handen, in denen das Band 1 gewalzt und dadurch in seiner Dicke reduziert wird.A strip store 11 (intermediate store) is arranged below the pickling line 4. From this the tape 1 runs into a trimming unit 8 in which the sides of the tape 1 are cut. The strip 1 passes from the trimming unit 8 via a further strip store 10 (outlet store) to the device 5 for rolling the strip 1. This device 5 is designed as a tandem rolling mill. There are three rolling stands 5a, 5b and 5c arranged one behind the other, in which the strip 1 is rolled and its thickness is thereby reduced.
Hinter der Tandem-Walzstraße 5 ist ein Austrittsabschnitt 14 angeordnet, der eine nicht dargestellte Aufwickeleinheit aufweist, mit der das fertige Band 1 auf- gewickelt werden kann.An outlet section 14 is arranged behind the tandem rolling mill 5 and has a winding unit (not shown) with which the finished strip 1 can be wound up.
Die Tandem-Walzstraße 5 weist - wie bereits gesagt - drei Walzgerüste 5a, 5b und 5c auf, die in der Bauart eines Mehrwalzen-Kaltwalzwerkes, eines 6-high- Walzwerkes oder eines Z-high-Walzwerkes ausgebildet sein können. Dadurch, dass die Dickenreduzierung des Bandes 1 erst in der- einzigen - Einrichtung 5 zum Walzen des Bandes 1 am Ende der Vorrichtung 2 erfolgt, weist das Band 1 vor der Tandem-Walzstraße 5 noch eine relativ große Dicke, nämlich die Dicke, mit der das Band 1 in die Vorrichtung 2 eintritt, auf. Dies hat zur Folge, dass die Baulänge sowohl des Glühofens 3 als auch der Beizlinie 4 relativ gering gehalten werden kann.As already mentioned, the tandem rolling mill 5 has three roll stands 5a, 5b and 5c, which can be designed in the form of a multi-roll cold rolling mill, a 6-high rolling mill or a Z-high rolling mill. The fact that the thickness of the strip 1 is only reduced in the only device 5 for rolling the strip 1 at the end of the device 2 shows the strip 1 in front of the tandem mill 5 a relatively large thickness, namely the thickness with which the strip 1 enters the device 2. The consequence of this is that the overall length of both the annealing furnace 3 and the pickling line 4 can be kept relatively short.
Es ergibt sich dadurch ein relativ kompakter Aufbau der Vorrichtung 2, der die Investitionskosten für die Vorrichtung 2 gering hält. Sowohl der Glühofen 3 als auch die Beizlinie 4 können also auf die ursprüngliche Dicke des Bandes 1 ausgelegt werden, mit der das Band 1 in die Vorrichtung 2 eintritt.This results in a relatively compact structure of the device 2, which keeps the investment costs for the device 2 low. Both the annealing furnace 3 and the pickling line 4 can thus be designed for the original thickness of the strip 1 with which the strip 1 enters the device 2.
Zumindest für die austenitischen und die einfachen ferritischen Materialien kann eine Dickenreduzierung ohne vorherige Glühung vorgenommen werden, was zu einer kleineren maximalen Dickenreduzierung von maximal 30 bis 40 % führt.At least for the austenitic and simple ferritic materials, the thickness can be reduced without prior annealing, which leads to a smaller maximum thickness reduction of a maximum of 30 to 40%.
Die maximale Dickenreduzierung des Bandes 1 pro Durchlauf durch die Vor- richtung 2 richtet sich nur nach den Materialien und der Leistungsfähigkeit der Tandem-Walzstraße 5; auf das ungeglühte Band muss keine Rücksicht genommen werden.The maximum thickness reduction of the strip 1 per pass through the device 2 depends only on the materials and the performance of the tandem rolling mill 5; no consideration has to be given to the unannealed strip.
Ein Walzgerüst der Tandem-Walzstraße 5 kann so ausgelegt sein, dass bei einer Schlussglühung das Band 1 dressiert werden kann.A roll stand of the tandem rolling mill 5 can be designed such that the strip 1 can be treated during a final annealing.
Das entzunderte und vorzugsweise bereits besäumte Band kann - im An- schluss an die Vorrichtung 2 - ohne Zwischenlagerung unter gleichmäßigem Bandzug kontinuierlich in einer Nachfolgeeinrichtung (Feuerverzinkungsanlage, etc.) einlaufen. Das fertige Band kann dabei hinter der Nachfolgeeinrichtung wechselweise mit zwei Haspeln aufgewickelt und mit einer Schere unterteilt werden. BezugszeichenlisteThe descaled and preferably already trimmed strip - following the device 2 - can run continuously into a downstream device (hot-dip galvanizing system, etc.) without intermediate storage and with uniform strip tension. The finished strip can be alternately wound up with two reels behind the downstream device and divided with scissors. LIST OF REFERENCE NUMBERS
1 Band (Metallstrang)1 band (metal strand)
2 Vorrichtung 3 Einrichtung zum Erwärmen des Bandes (Glühofen)2 device 3 device for heating the strip (annealing furnace)
4 Einrichtung zum chemischen Behandeln des Bandes (Beizeinrichtung)4 Device for chemical treatment of the strip (pickling device)
5 Einrichtung zum Walzen des Bandes (Tandem-Walzstraße) 5a Walzgerüst 5b Walzgerüst5 Device for rolling the strip (tandem rolling mill) 5a roll stand 5b roll stand
5c Walzgerüst5c mill stand
6 Streckrichteinheit6 stretch leveling unit
7 Metallkorn-Strahleinheit7 metal grain blasting unit
8 Besäumeinheit 9 Bandspeicher (Einlaufspeicher)8 trimming unit 9 tape storage (inlet storage)
10 Bandspeicher (Auslaufspeicher)10 tape storage (outfeed storage)
11 Bandspeicher (Zwischenspeicher)11 tape storage (buffer)
12 Entfettungseinrichtung12 degreasing device
13 Eintrittsabschnitt 14 Austrittsabschnitt13 inlet section 14 outlet section
R Förderrichtung R direction of conveyance
Claims
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020057001351A KR100990865B1 (en) | 2002-07-26 | 2003-07-10 | Method and apparatus for continuous production of metal strips |
| AU2003250025A AU2003250025B2 (en) | 2002-07-26 | 2003-07-10 | Method and device for the continuous production of metallic strips |
| DE50304876T DE50304876D1 (en) | 2002-07-26 | 2003-07-10 | METHOD AND APPARATUS FOR CONTINUOUS PRODUCTION OF METALLIC TAPES |
| EP03766145A EP1525060B1 (en) | 2002-07-26 | 2003-07-10 | Method and device for the continuous production of metallic strips |
| JP2004525173A JP2006502003A (en) | 2002-07-26 | 2003-07-10 | Method and apparatus for continuously producing metal strip |
| BRPI0312756-7A BR0312756B1 (en) | 2002-07-26 | 2003-07-10 | procedure and device for continuously manufacturing metal strips. |
| US10/522,484 US20060053617A1 (en) | 2002-07-26 | 2003-07-10 | Method and device for the continuous production of metallic strips |
| MXPA05001083A MXPA05001083A (en) | 2002-07-26 | 2003-07-10 | Method and device for the continuous production of metallic strips. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10234109A DE10234109A1 (en) | 2002-07-26 | 2002-07-26 | Method and device for the continuous production of metallic strips |
| DE10234109.5 | 2002-07-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004012878A1 true WO2004012878A1 (en) | 2004-02-12 |
Family
ID=30010423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2003/007464 Ceased WO2004012878A1 (en) | 2002-07-26 | 2003-07-10 | Method and device for the continuous production of metallic strips |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US20060053617A1 (en) |
| EP (1) | EP1525060B1 (en) |
| JP (1) | JP2006502003A (en) |
| KR (1) | KR100990865B1 (en) |
| CN (1) | CN1671490A (en) |
| AT (1) | ATE337862T1 (en) |
| AU (1) | AU2003250025B2 (en) |
| BR (1) | BR0312756B1 (en) |
| DE (2) | DE10234109A1 (en) |
| ES (1) | ES2271651T3 (en) |
| MX (1) | MXPA05001083A (en) |
| RU (1) | RU2350415C2 (en) |
| TW (1) | TWI273929B (en) |
| WO (1) | WO2004012878A1 (en) |
| ZA (1) | ZA200500458B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116851490A (en) * | 2023-06-06 | 2023-10-10 | 中铝瑞闽股份有限公司 | A method for eliminating alkali liquid marks on aluminum plates |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI389747B (en) * | 2007-10-16 | 2013-03-21 | Ihi Metaltech Co Ltd | Recoiling facility for magnesium alloy sheet |
| KR101103346B1 (en) * | 2009-07-14 | 2012-01-11 | 주식회사 동방플랜텍 | Cold Rolled Steel Processing Line |
| RU2499640C1 (en) * | 2012-06-14 | 2013-11-27 | Открытое акционерное общество "Северсталь" (ОАО "Северсталь") | Method of producing cold-rolled stock for wrapping strap |
| RU2592609C1 (en) * | 2015-04-21 | 2016-07-27 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Production method of cold-rolled mill products for baling band |
| TWI625172B (en) * | 2016-09-19 | 2018-06-01 | Composite cold rolling line | |
| WO2020067236A1 (en) | 2018-09-28 | 2020-04-02 | Ｊｆｅスチール株式会社 | Method for producing grain-oriented electromagnetic steel sheet, and cold rolling equipment |
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|---|---|---|---|---|
| WO1999043451A1 (en) * | 1998-02-25 | 1999-09-02 | Ugine S.A. | Installation for making cold-rolled stainless steel bands |
| WO2000037189A1 (en) * | 1998-12-18 | 2000-06-29 | Avesta Sheffield Aktiebolag (Publ) | Method for manufacturing of strips and rolling mill line |
| DE10022045C1 (en) * | 2000-02-22 | 2001-07-19 | Sundwig Gmbh | Finishing line for continuously producing cold-rolled metallic strips comprises a device for pickling the strip arranged in region of the start, the conveyor path of the strip and cold roll stands arranged before/after the pickling device |
| US20010037667A1 (en) * | 2000-04-21 | 2001-11-08 | Francois Leroux | Cold rolling method and installtion |
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| JPH05161901A (en) * | 1991-12-12 | 1993-06-29 | Sumitomo Metal Ind Ltd | Manufacture of cold rolled strip metal having good surface gloss |
| JPH07164008A (en) * | 1993-12-15 | 1995-06-27 | Nkk Corp | Pickling-cold rolling equipment |
| JPH0824936A (en) * | 1994-07-15 | 1996-01-30 | Nisshin Steel Co Ltd | Method and equipment for rolling metal strip |
| JPH08246060A (en) * | 1995-03-10 | 1996-09-24 | Kawasaki Steel Corp | Manufacturing method of steel plate for can |
| DE19532278B4 (en) * | 1995-09-01 | 2006-07-27 | Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh | Method for producing a cold-rolled strip in one pass |
| JP3460612B2 (en) * | 1999-03-04 | 2003-10-27 | Ｊｆｅスチール株式会社 | Process line with surface defect meter |
| JP3695212B2 (en) * | 1999-03-30 | 2005-09-14 | Ｊｆｅスチール株式会社 | Cold rolling method for stainless steel strip |
| JP2001262232A (en) * | 2000-03-15 | 2001-09-26 | Kawasaki Steel Corp | Manufacturing method of stainless steel strip |
| JP2001340905A (en) * | 2000-05-31 | 2001-12-11 | Kawasaki Steel Corp | Rolling method of black scale steel plate |
-
2002
- 2002-07-26 DE DE10234109A patent/DE10234109A1/en not_active Withdrawn
-
2003
- 2003-07-03 TW TW092118181A patent/TWI273929B/en active
- 2003-07-10 ES ES03766145T patent/ES2271651T3/en not_active Expired - Lifetime
- 2003-07-10 BR BRPI0312756-7A patent/BR0312756B1/en not_active IP Right Cessation
- 2003-07-10 WO PCT/EP2003/007464 patent/WO2004012878A1/en not_active Ceased
- 2003-07-10 JP JP2004525173A patent/JP2006502003A/en active Pending
- 2003-07-10 AU AU2003250025A patent/AU2003250025B2/en not_active Ceased
- 2003-07-10 CN CNA03817975XA patent/CN1671490A/en active Pending
- 2003-07-10 EP EP03766145A patent/EP1525060B1/en not_active Expired - Lifetime
- 2003-07-10 DE DE50304876T patent/DE50304876D1/en not_active Expired - Fee Related
- 2003-07-10 KR KR1020057001351A patent/KR100990865B1/en not_active Expired - Fee Related
- 2003-07-10 US US10/522,484 patent/US20060053617A1/en not_active Abandoned
- 2003-07-10 MX MXPA05001083A patent/MXPA05001083A/en active IP Right Grant
- 2003-07-10 RU RU2005105314/02A patent/RU2350415C2/en not_active IP Right Cessation
- 2003-07-10 AT AT03766145T patent/ATE337862T1/en not_active IP Right Cessation
-
2005
- 2005-01-18 ZA ZA200500458A patent/ZA200500458B/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999043451A1 (en) * | 1998-02-25 | 1999-09-02 | Ugine S.A. | Installation for making cold-rolled stainless steel bands |
| WO2000037189A1 (en) * | 1998-12-18 | 2000-06-29 | Avesta Sheffield Aktiebolag (Publ) | Method for manufacturing of strips and rolling mill line |
| DE10022045C1 (en) * | 2000-02-22 | 2001-07-19 | Sundwig Gmbh | Finishing line for continuously producing cold-rolled metallic strips comprises a device for pickling the strip arranged in region of the start, the conveyor path of the strip and cold roll stands arranged before/after the pickling device |
| US20010037667A1 (en) * | 2000-04-21 | 2001-11-08 | Francois Leroux | Cold rolling method and installtion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116851490A (en) * | 2023-06-06 | 2023-10-10 | 中铝瑞闽股份有限公司 | A method for eliminating alkali liquid marks on aluminum plates |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200414942A (en) | 2004-08-16 |
| ES2271651T3 (en) | 2007-04-16 |
| BR0312756A (en) | 2005-04-26 |
| RU2350415C2 (en) | 2009-03-27 |
| MXPA05001083A (en) | 2005-06-06 |
| BR0312756B1 (en) | 2011-05-31 |
| KR20050021565A (en) | 2005-03-07 |
| AU2003250025B2 (en) | 2008-08-28 |
| DE50304876D1 (en) | 2006-10-12 |
| CN1671490A (en) | 2005-09-21 |
| JP2006502003A (en) | 2006-01-19 |
| KR100990865B1 (en) | 2010-10-29 |
| US20060053617A1 (en) | 2006-03-16 |
| AU2003250025A1 (en) | 2004-02-23 |
| DE10234109A1 (en) | 2004-02-05 |
| RU2005105314A (en) | 2005-07-20 |
| EP1525060A1 (en) | 2005-04-27 |
| ZA200500458B (en) | 2006-04-26 |
| EP1525060B1 (en) | 2006-08-30 |
| ATE337862T1 (en) | 2006-09-15 |
| TWI273929B (en) | 2007-02-21 |
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