EP1320425A1 - Verfahren und vorrichtung zum betreiben einer warmwalzstrasse mit mindestens einem stauchgerüst - Google Patents
Verfahren und vorrichtung zum betreiben einer warmwalzstrasse mit mindestens einem stauchgerüstInfo
- Publication number
- EP1320425A1 EP1320425A1 EP01980167A EP01980167A EP1320425A1 EP 1320425 A1 EP1320425 A1 EP 1320425A1 EP 01980167 A EP01980167 A EP 01980167A EP 01980167 A EP01980167 A EP 01980167A EP 1320425 A1 EP1320425 A1 EP 1320425A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- infrared line
- line sensor
- end position
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
-
- 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
- B21B37/72—Rear end control; Front end control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/12—End of product
Definitions
- the invention relates to a method for operating a hot rolling mill with at least one upsetting stand and at least one sensor for determining the strip end position, an optimization of the strip width distribution of at least one strip end of a rolled strip being achieved with a computing system.
- the invention further relates to a device for operating a hot rolling mill with at least one upsetting stand and at least one sensor for determining the strip end position, an optimization of the strip width distribution of at least one strip end of a rolled strip being achieved with a computing system.
- the rolled strip is usually narrower at the ends of the strip, i.e. the strip head and the strip base, than in the middle section due to the asymmetrical material flow and other effects.
- width constrictions at the strip ends are obtained after an upsetting process, ie when the rolled strip passes through the upset frame.
- the state of tension during the upsetting process leads to a so-called sharpening of the band head and thus to width dimensions which, depending on the upsetting dimension, are far below the setting dimension of the upsetting frame.
- this forming process also causes at the rear end of the belt, i.e. at the base of the strip, negative deviations in width, the subsequent flat stitch in a horizontal stand resulting in a rolled strip contour, which is known as fish tail formation.
- the under-widths or width constrictions occurring at the belt ends are primarily due to the asymmetrical compressive and shear stresses in the area of the belt ends caused by the compression structures, which lead to an increased material longitudinal flow in the belt edge area due to the lack of material support.
- the setting position of the compression stands during the strip pass is adjustable, the inclination of the compression stand as it moves through the rolled strip ends in the form of short swings, so-called “short strokes”, relative to the middle part
- This adjustment of the adjustment at the strip ends of the rolled strip, ie at the strip head and at the strip foot, is carried out in accordance with a driving curve which can be defined by predetermined driving curve parameters.
- the object of the invention is to find a method for operating a hot rolling mill with at least one compression stand and at least one sensor for determining the strip end position, with which a more reliable determination of the strip end position of the rolled strip is achieved.
- the invention is also based on the object of finding a device for operating a hot rolling mill with at least one compression frame and at least one sensor for determining the strip end position, which enables the strip end position to be determined more reliably from the rolled strip.
- the object is achieved by a method according to claim 1.
- the object is further achieved according to the invention by a device according to claim 7.
- Advantageous further developments of the method and the device are specified in the further claims.
- the method according to the invention according to claim 1 comprises a cell-shaped detection of the infrared radiation of the rolled strip for determining the strip end position.
- the device according to the invention according to claim 7 for operating a rolling mill with at least one compression frame and at least one sensor for determining the strip end position, an optimization of the strip width distribution of at least one strip end of a rolled strip using a computing system is achieved comprises a sensor which is designed as an infrared line sensor which is arranged in front of and / or behind the compression frame.
- the problem described at the beginning of determining the strip end position of the rolled strip, which is caused by poor environmental conditions, e.g. is made difficult by water or even scale on the rolling belt, is now solved with an infrared line sensor.
- the infrared line sensor detects the infrared radiation emitted by the rolled strip in a predetermined measuring range.
- An advantageous embodiment when using the infrared line sensor lies in the fact that the predeterminable measuring range extends transversely to the tape running direction.
- the advantage of this alignment, which is selected transversely to the tape run is that in addition to the tape end detection, i.e. Band head (the first end of the band arriving in the edger) and band foot (the end of the band ending in the edger), a band edge detection is also carried out.
- the strip width position based on the center of the strip running in the longitudinal direction of the strip, is determined.
- a further advantageous embodiment of the use of the infrared line sensor lies in the fact that the predeterminable measuring range runs longitudinally to the tape running direction. With this alignment, cold spots lying transversely to the rolled strip do not influence the strip end detection, since the measuring range set along the strip running direction covers an extended longitudinal range of the rolled strip, and thus also enables plausibility checks. At the same time, these plausibility checks represent a higher level of security and accuracy of the measured value recognition.
- the strip end position is detected in front of the compression frame.
- the strip end position is detected after the compression frame.
- the strip end position is detected before and after the compression frame.
- FIG. 1 shows a hot rolling mill (reversing roughing mill) with a first embodiment of the device according to the invention
- FIG. 2 shows a hot rolling mill (continuous roughing mill) with a second embodiment of the device according to the invention
- FIG. 3 shows a signal curve determined by the infrared line sensor.
- FIG. 1 shows excerpts of the mechanical devices associated with a reversing roughing mill and an exemplary embodiment of the arrangement of the infrared line sensors 5 and 6.
- a pusher furnace 1, a roller table 2 and a roller table 7, an upsetting stand 3, a horizontal stand 4, two infrared line sensors 5 and 6 and the finishing train 8 following the reversing roughing mill 8 are shown as mechanical devices Transported towards roller table 7, this is referred to as an odd roll pass. If the rolled strip is transported from the roller table 7 in the direction of the pusher furnace 1, this is referred to as a straight roll pass.
- the infrared line sensor 5 or 6 is used depending on the rolling direction.
- odd rolling dies Chen is the infrared line sensor 5, with straight roll passes, the infrared line sensor 6 is used for strip end detection. The individual whale stitches are repeated until the desired strip thickness is reached.
- the roller conveyor is then transported with the roller table 7 in the direction of the finishing train 8.
- FIG. 2 shows excerpts of the mechanical devices associated with a continuous roughing mill and an exemplary embodiment of the arrangement of the infrared line sensors 12, 12 ⁇ and 12 ⁇ ⁇ .
- a mechanical device a pusher furnace 10, the roller table 11, the infrared line sensors 12, 12 ⁇ and 12 , ⁇ , the compression frame 13, 13 and 13 ⁇ , the horizontal frame 14, 14 ⁇ and 14 ⁇ ⁇ and the finishing train following the continuous roughing train are shown 15.
- the rolled strip is transported from the pusher furnace 10 towards the finishing train 15.
- the infrared line sensors 12, 12 ⁇ and 12 ⁇ positioned in front of the compression stands 13, 13 ⁇ and 13 ⁇ detect the ends of the strip. Depending on the strip end detection, adjustment corrections are applied to the compression frames 13, 13 ⁇ and 13. After the passage of the rolled strip, ie when the strip base of the rolled strip has left the last horizontal stand 14 ⁇ , the rolled strip is transported towards the finishing train 15.
- FIG. 3 shows a signal curve determined by the infrared line sensor.
- a time course is shown on the abscissa, which shows a period of approximately 2 minutes and 50 seconds.
- the ordinate shows the intensity of the heat radiation of the rolled strip measured by the infrared line sensor.
- the determination of the strip head of the rolled strip can be recognized by the increase in the intensity of the radiation.
- the decrease in the intensity of the heat radiation shows the detection of the strip foot of the rolled strip by the
- Infrared line sensor In the diagram shown, four rolled strip passes can be seen, ie the infrared line sensor has detected four tape head and four tape foot signals.
- the fourth roll pass shown in the diagram shows strong fluctuations in the signal determined by the infrared line sensor. These fluctuations in the detected intensity of the heat radiation from the rolled strip arise due to poor environmental conditions, such as water vapor. However, these influences are clearly distinguishable from the heat radiation from the rolled strip, and thus do not influence the clear detection of the strip foot of the rolled strip.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10048470A DE10048470A1 (de) | 2000-09-29 | 2000-09-29 | Verfahren und Vorrichtung zum Betreiben einer Warmwalzstraße mit mindestens einem Stauchgerüst |
DE10048470 | 2000-09-29 | ||
PCT/DE2001/003582 WO2002026408A1 (de) | 2000-09-29 | 2001-09-17 | Verfahren und vorrichtung zum betreiben einer warmwalzstrasse mit mindestens einem stauchgerüst |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1320425A1 true EP1320425A1 (de) | 2003-06-25 |
EP1320425B1 EP1320425B1 (de) | 2006-05-24 |
Family
ID=7658208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01980167A Expired - Lifetime EP1320425B1 (de) | 2000-09-29 | 2001-09-17 | Verfahren und vorrichtung zum betreiben einer warmwalzstrasse mit mindestens einem stauchgerüst |
Country Status (7)
Country | Link |
---|---|
US (1) | US6786071B2 (de) |
EP (1) | EP1320425B1 (de) |
JP (1) | JP2004509763A (de) |
AT (1) | ATE327057T1 (de) |
DE (2) | DE10048470A1 (de) |
ES (1) | ES2263666T3 (de) |
WO (1) | WO2002026408A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10048470A1 (de) | 2000-09-29 | 2002-04-25 | Siemens Ag | Verfahren und Vorrichtung zum Betreiben einer Warmwalzstraße mit mindestens einem Stauchgerüst |
EP1907595A1 (de) * | 2005-07-20 | 2008-04-09 | Euroball S.P.A. | Wärmebehandlung von rollelementen für lager und ofen zur durchführung einer derartigen behandlung |
GB2468913B (en) * | 2009-03-27 | 2011-02-16 | Siemens Vai Metals Tech Ltd | Fully hydraulic edger for plate mills |
CN103128107B (zh) * | 2013-03-14 | 2015-10-07 | 北京科技大学 | 一种热连轧粗轧短行程曲线参数的在线计算方法 |
JP7191532B2 (ja) * | 2018-03-22 | 2022-12-19 | 日鉄エンジニアリング株式会社 | 圧延機及び圧延鋼材の製造方法 |
WO2019187994A1 (ja) | 2018-03-28 | 2019-10-03 | 新東工業株式会社 | ロールプレス装置、ロールプレス装置の制御システム、及び、ロールプレス装置の制御方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3651676A (en) * | 1969-12-31 | 1972-03-28 | Westinghouse Electric Corp | Rolling mill control system |
DE2725353A1 (de) * | 1977-06-04 | 1979-04-19 | Nukem Gmbh | Verfahren und vorrichtung zur laengenmessung von sich bewegenden formkoerpern, insbesondere von rotgluehenden halbzeugen |
JPS5469556A (en) * | 1977-11-14 | 1979-06-04 | Sumitomo Metal Ind Ltd | Controlling method for sheet breadth in hot rolling work |
EP0057290A1 (de) * | 1981-02-02 | 1982-08-11 | Hoogovens Groep B.V. | Temperaturabtaster |
DE3117360A1 (de) * | 1981-05-02 | 1982-11-18 | Eltro GmbH, Gesellschaft für Strahlungstechnik, 6900 Heidelberg | Vorrichtung zur pruefung von walzgut fuer die fehlererfassung |
DE3125476C2 (de) * | 1981-06-29 | 1986-11-06 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Steuerungsvorrichtung für eine Schere zum Abschneiden von bezüglich ihrer Breite unvollständig ausgebildeten Walzgutenden |
GB2101918A (en) * | 1981-07-22 | 1983-01-26 | Europ Electronic Syst Ltd | Control for roughing train |
JPS60255209A (ja) * | 1984-05-30 | 1985-12-16 | Mitsubishi Heavy Ind Ltd | 圧延機におけるエツジヤ開度制御方法 |
US4656856A (en) * | 1985-10-23 | 1987-04-14 | Bethlehem Steel Corporation | Method and apparatus for eliminating crescent formation in a reduction mill |
US4899547A (en) * | 1988-12-30 | 1990-02-13 | Even Flow Products, Inc. | Hot strip mill cooling system |
DE19522494C2 (de) * | 1994-07-07 | 1997-06-19 | Siemens Ag | Verfahren zum Walzen eines Metallbandes |
DE19744504B4 (de) * | 1997-10-09 | 2004-05-06 | Sms Demag Ag | Walzverfahren für Bandmaterial in einer Walzstraße |
DE10048470A1 (de) | 2000-09-29 | 2002-04-25 | Siemens Ag | Verfahren und Vorrichtung zum Betreiben einer Warmwalzstraße mit mindestens einem Stauchgerüst |
-
2000
- 2000-09-29 DE DE10048470A patent/DE10048470A1/de not_active Ceased
-
2001
- 2001-09-17 EP EP01980167A patent/EP1320425B1/de not_active Expired - Lifetime
- 2001-09-17 JP JP2002530228A patent/JP2004509763A/ja not_active Abandoned
- 2001-09-17 WO PCT/DE2001/003582 patent/WO2002026408A1/de active IP Right Grant
- 2001-09-17 ES ES01980167T patent/ES2263666T3/es not_active Expired - Lifetime
- 2001-09-17 DE DE50109898T patent/DE50109898D1/de not_active Expired - Lifetime
- 2001-09-17 AT AT01980167T patent/ATE327057T1/de active
-
2003
- 2003-03-28 US US10/401,928 patent/US6786071B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0226408A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE327057T1 (de) | 2006-06-15 |
US6786071B2 (en) | 2004-09-07 |
US20030164017A1 (en) | 2003-09-04 |
JP2004509763A (ja) | 2004-04-02 |
DE10048470A1 (de) | 2002-04-25 |
WO2002026408A1 (de) | 2002-04-04 |
ES2263666T3 (es) | 2006-12-16 |
EP1320425B1 (de) | 2006-05-24 |
DE50109898D1 (de) | 2006-06-29 |
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