WO2024083592A1 - Walzanlage und verfahren zu deren betrieb - Google Patents
Walzanlage und verfahren zu deren betrieb Download PDFInfo
- Publication number
- WO2024083592A1 WO2024083592A1 PCT/EP2023/078151 EP2023078151W WO2024083592A1 WO 2024083592 A1 WO2024083592 A1 WO 2024083592A1 EP 2023078151 W EP2023078151 W EP 2023078151W WO 2024083592 A1 WO2024083592 A1 WO 2024083592A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metal strip
- strip
- flatness
- rolling
- rolling mill
- 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.)
- Ceased
Links
Classifications
-
- 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
-
- 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
- B21B15/0007—Cutting or shearing the product
- B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/006—Pinch roll sets
Definitions
- the invention relates to a rolling mill and a method for operating the rolling mill for hot rolling metal strip, in particular steel strip.
- the rolling mill disclosed therein has a finishing rolling mill for finishing rolling metal strip, a cooling device downstream of the finishing rolling mill for cooling the finished and hot-rolled metal strip, and a coiling device for coiling the metal strip.
- the known rolling mill includes a flatness measuring device both between the last stand of the finishing rolling mill and the cooling device and between the cooling device and the coiling device. The flatness measurements are carried out contactlessly using a CCD camera.
- the invention is based on the object of further developing a known rolling mill and a known method for operating the rolling mill for hot rolling metal strip in such a way that a flatness measurement of the metal strip is not distorted by an existing strip tension.
- the rolling mill according to the invention is characterized in that a separating device is arranged between the finishing rolling stand and the flatness measuring device for transversely dividing the metal strip into strip sections and that a driving device is arranged between the flatness measuring device and the coiling device for feeding the strip sections to the coiling device.
- the respective strip section is only clamped in the driver device arranged downstream of the flatness measuring device in the transport direction of the metal strip.
- the end of a strip section is not clamped during the flatness measurement and therefore the strip section in question is not under tensile stress during the flatness measurement.
- the result of the flatness measurement is therefore not “embellished” by any tensile stress, but is more precise and objective.
- the flatness measurement data obtained according to the invention are therefore more meaningful, particularly in a steady rolling operation.
- a cooling device is connected between the finishing rolling stand and the separating device, in particular between the finishing rolling stand and a further driving device.
- the above-mentioned object of the invention is further achieved by a method for operating the rolling mill according to claim 4.
- the advantages of this solution correspond to the advantages mentioned above with reference to the claimed rolling mill.
- the method according to the invention provides that the flatness is measured at the end of each respective strip section, while upstream areas of the strip section are clamped in the driver device in front of the reel device. However, the strip end and the fillet area are not clamped and are therefore free of tensile stresses during the flatness measurement.
- the fillet area is the area between the strip end and the strip head of each strip section.
- the metal strip is produced in a so-called endless operation.
- endless operation a casting system is connected upstream of the rolling mill, in which a cast strand is cast endlessly from a metal melt and deflected horizontally in a strand guide device.
- This endless cast strand then runs through the rolling stands of the rolling mill - without being divided transversely - and is thereby formed into the metal strip.
- the characteristic of endless operation is that the endless cast strand or the metal strip resulting from it is only divided transversely into strip sections after the finishing rolling mill, preferably only after a cooling device arranged downstream of the finishing rolling mill.
- the casting system and the rolling mill are coupled to one another via the endless cast strand or the metal strip.
- the strip sections preferably each have the length of a coil and are each wound up into a coil on the reel device. Since the continuous rolling process is usually stable, a dead time can also be managed within the framework of a flatness control based on the required flatness measurement.
- the flatness is preferably measured without contact, in particular with the aid of an optical flatness measuring method.
- the contactless flatness measurement offers the advantage that the strip section cannot be damaged by the flatness measuring device.
- the well-known, conventional non-contact flatness measurement methods are established and reliable as well as cost-effective and low-maintenance.
- the description is accompanied by a single figure showing the rolling mill according to the invention, optionally with an upstream casting plant.
- the figure shows the rolling mill 100 according to the invention for rolling metal strip.
- the rolling mill 100 has at least one finishing rolling stand 110 for finishing rolling, i.e. hot rolling, the metal strip 20.
- the rolling mill also comprises a cutting device 130 arranged downstream of the last finishing rolling stand 110 for transversely dividing the metal strip 20 into strip sections 20'.
- the strip sections typically have the length of a coil, into which the strip sections are subsequently wound using a reeling device 160.
- a driver device 150 is connected upstream of the reeling device 160.
- the speed at which the strip sections are wound up is, for example, 10 m/s ⁇ v ⁇ 20 m/s, preferably 14 m/s ⁇ v ⁇ 16 m/s.
- the rolling mill 100 further provides that a flatness measuring device 140 is provided between the separating device 130 and the driving device 150 for detecting the flatness of the strip sections 20' separated from the metal strip. While the beginning of the strip and possibly parts of the fillet of the strip section are clamped in the driving device 150, the end and other parts of the fillet area of a respective strip section are not clamped during the flatness measurement with the aid of the flatness measuring device 140, i.e. are free from Strip tension. As explained above, this flatness measurement without tension chipping offers the advantage of more objective measurement data than under strip tension.
- a cooling device for cooling the finished rolled metal strip can be provided between the finishing rolling stand 110 and the separating device 130. If a cooling device 120 is present, it should be remembered that this can also influence the flatness of the metal strip. Further optionally, a further driving device 155 can be provided between the cooling device 120 and the separating device 130, which ensures a stable feed of the metal strip to the separating device 130.
- the claimed rolling mill 100 can be preceded by a casting plant 200.
- the casting plant typically comprises a mold for pouring a metal melt into an endless cast strand and a strand guide device for deflecting the endless cast strand into the horizontal.
- the cast strand is typically cooled in the casting plant 200.
- the endless cast strand then runs into the rolling stands 110 of the rolling plant 100 and is formed there into the said metal strip 20.
- this mode of operation is the aforementioned endless rolling.
- the casting plant 200 and the downstream rolling plant 100 are coupled to one another via the endless casting strand or the metal strip 20.
- the tension-free flatness measurement claimed according to the invention is particularly suitable for the rolling operation of endless rolling because, as mentioned, the metal strip is transversely divided behind the last stand of the finishing rolling train and before the coiler device 160 and can therefore be measured there with regard to its flatness without tension.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23789898.6A EP4605149A1 (de) | 2022-10-17 | 2023-10-11 | Walzanlage und verfahren zu deren betrieb |
| JP2025521276A JP2025533278A (ja) | 2022-10-17 | 2023-10-11 | 圧延機及びその運転方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022210959.7 | 2022-10-17 | ||
| DE102022210959.7A DE102022210959A1 (de) | 2022-10-17 | 2022-10-17 | Walzanlage und Verfahren zu deren Betrieb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024083592A1 true WO2024083592A1 (de) | 2024-04-25 |
Family
ID=88413198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/078151 Ceased WO2024083592A1 (de) | 2022-10-17 | 2023-10-11 | Walzanlage und verfahren zu deren betrieb |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4605149A1 (de) |
| JP (1) | JP2025533278A (de) |
| DE (1) | DE102022210959A1 (de) |
| WO (1) | WO2024083592A1 (de) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57118807A (en) * | 1981-01-16 | 1982-07-23 | Toshiba Corp | Method for removing fish tail of hot rolled material |
| US6874724B2 (en) * | 2000-03-27 | 2005-04-05 | Bfi Vdeh-Institute Fur Angewandte Forschung Gmbh | Method and device for reeling up in the proper position a hot-rolled strip in a reeling installation |
| EP1418400B1 (de) | 1997-03-11 | 2009-05-06 | VDEh-Betriebsforschungsinstitut GmbH | Walzstrasse |
| EP3138639B1 (de) * | 2015-09-03 | 2021-03-24 | SMS group GmbH | Verfahren zum herstellen eines metallischen bandes durch endloswalzen |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63198809A (ja) * | 1987-02-13 | 1988-08-17 | Hitachi Cable Ltd | 圧延材の光学式形状検出方法およびその装置 |
| JP4957663B2 (ja) * | 2008-06-26 | 2012-06-20 | 住友金属工業株式会社 | 熱延鋼板の製造方法および製造装置 |
-
2022
- 2022-10-17 DE DE102022210959.7A patent/DE102022210959A1/de active Pending
-
2023
- 2023-10-11 WO PCT/EP2023/078151 patent/WO2024083592A1/de not_active Ceased
- 2023-10-11 JP JP2025521276A patent/JP2025533278A/ja active Pending
- 2023-10-11 EP EP23789898.6A patent/EP4605149A1/de active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57118807A (en) * | 1981-01-16 | 1982-07-23 | Toshiba Corp | Method for removing fish tail of hot rolled material |
| EP1418400B1 (de) | 1997-03-11 | 2009-05-06 | VDEh-Betriebsforschungsinstitut GmbH | Walzstrasse |
| US6874724B2 (en) * | 2000-03-27 | 2005-04-05 | Bfi Vdeh-Institute Fur Angewandte Forschung Gmbh | Method and device for reeling up in the proper position a hot-rolled strip in a reeling installation |
| EP3138639B1 (de) * | 2015-09-03 | 2021-03-24 | SMS group GmbH | Verfahren zum herstellen eines metallischen bandes durch endloswalzen |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022210959A1 (de) | 2024-04-18 |
| EP4605149A1 (de) | 2025-08-27 |
| JP2025533278A (ja) | 2025-10-03 |
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