EP1320425B1 - Procede et dispositif pour le fonctionnement d'un train de laminage continu a chaud equipe d'au moins une cage refouleuse - Google Patents

Procede et dispositif pour le fonctionnement d'un train de laminage continu a chaud equipe d'au moins une cage refouleuse Download PDF

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Publication number
EP1320425B1
EP1320425B1 EP01980167A EP01980167A EP1320425B1 EP 1320425 B1 EP1320425 B1 EP 1320425B1 EP 01980167 A EP01980167 A EP 01980167A EP 01980167 A EP01980167 A EP 01980167A EP 1320425 B1 EP1320425 B1 EP 1320425B1
Authority
EP
European Patent Office
Prior art keywords
strip
edger
sensor
rolled strip
infrared
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
Application number
EP01980167A
Other languages
German (de)
English (en)
Other versions
EP1320425A1 (fr
Inventor
Konrad Thiele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1320425A1 publication Critical patent/EP1320425A1/fr
Application granted granted Critical
Publication of EP1320425B1 publication Critical patent/EP1320425B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 edger stand and at least one sensor for determining the belt end position, wherein an optimization of the bandwidth distribution of at least one belt end of a rolled strip is achieved with a computing system.
  • the invention further relates to an apparatus for operating a hot rolling mill with at least one edger stand and at least one sensor for determining the belt end position, wherein an optimization of the bandwidth distribution of at least one belt end of a rolled strip can be achieved with a computing system.
  • Strip steel is achieving a rectangular base shape with a constant width over the length of the strip.
  • vertical rolling stands which are also referred to as upsetting frames, serve to control the bandwidth.
  • the edging stands are equipped with fast hydraulic setting systems.
  • the rolled strip usually becomes narrower at the strip ends, ie the strip head and the strip base, than in the middle part due to the asymmetrical material flow and other effects.
  • width constrictions at the strip ends starting from the rectangular rolled strip form obtained after a compression process, ie during the passage of the rolled strip through the edger.
  • the widths or width constrictions occurring at the strip ends are primarily due to the asymmetric pressure and shear stresses in the region of the strip ends initiated by the upsetting stacks, which lead to an increased longitudinal material flow in the strip edge region due to the lack of material support.
  • an increase in the change in the shape of the height changes as the shape change changes, leading to beading along the strip edges. This bulge along the band edges is also referred to as a so-called dog bone form.
  • the Anstellposition the edger shoring during the band pass is adjustable, the employment of the edger stand when passing through the rolled strip ends in the form of short rashes, so-called "short strokes", relative to the middle part, further ascended.
  • This adjustment correction at the strip ends of the rolled strip i. on the tape head and on the belt foot, takes place in accordance with a travel curve, which can be defined by predetermined travel curve parameters.
  • a device for detecting the shapes of rolling stock ends which contains a first strip camera, with which the rolling stock surface is detected during the movement.
  • the receiving elements of the first camera are arranged transversely to the direction of movement of the rolling stock.
  • the camera is synchronized by a signal proportional to the rolling stock speed and entered into an image memory, with which an evaluation device is connected, which defines a cutting line for a particular Schopfform.
  • the object of the invention is to find a method for operating a hot rolling mill with at least one edger and at least one sensor for determining the belt end position, with a more reliable determination of the belt end position of the rolled strip is achieved.
  • the invention is further based on the object of finding an apparatus for operating a hot rolling mill with at least one edger stand and with at least one sensor for determining the belt end position, which enables a more reliable determination of the belt end position of the rolled strip.
  • the object is achieved by a method according to claim 1.
  • the object is further achieved by a device according to claim 7.
  • Advantageous developments of the method and the device are specified in the further claims.
  • the inventive method according to claim 1 comprises a line for detecting the tape end position detection of the infrared radiation of the rolled strip using an infrared line sensor that provides a radiation-dependent signal whose signal edges indicate a detected end of tape.
  • the device according to the invention as claimed in claim 7 for operating a rolling train with at least one edger and at least one sensor for determining the belt end position, wherein an optimization of the bandwidth distribution of at least one belt end of a rolled strip can be achieved with a computing system comprising a sensor which is designed as an infrared line sensor, which is arranged in front of and / or behind the edger, wherein the infrared line sensor provides an output signal whose signal edges indicate a detected tape end.
  • the problem presented at the outset is the determination of the strip end position of the rolled strip, which is caused by poor environmental conditions, such as e.g. is made difficult by water or tinder on the rolled strip, is now solved with an infrared line sensor.
  • the infrared line sensor detects in a line the infrared radiation of the rolled strip emitted on a presettable measuring range.
  • the predeterminable measuring range is transverse to the strip running direction.
  • the advantage of this orientation, chosen transversely to the banding is that in addition to the band end detection, i. Band head (in the edger frame first incoming tape end) and band foot (the expiring in the edger frame end of the tape), also a band edge detection is performed.
  • Band head in the edger frame first incoming tape end
  • band foot the expiring in the edger frame end of the tape
  • a further advantageous embodiment of the use of the infrared line sensor is that the predeterminable measuring range extends along the direction of strip travel. In this orientation, cold spots lying transversely to the rolling belt do not affect the belt end detection because the measuring range set along the direction of belt travel covers an extended longitudinal region of the rolled strip, and thus also enables plausibility checks. These plausibility checks simultaneously represent a higher level of security and accuracy of the measured value recognition.
  • the detection of the tape end position takes place in front of the upsetting frame.
  • the detection of the tape end position takes place after the upsetting frame .
  • the detection of the tape end position takes place before and after the upsetting frame.
  • the hot rolling mill shown in FIG 1 is also referred to as reversing roughing.
  • 1 shows the excerpts of a reversing prerelease associated mechanical devices and an exemplary embodiment of the arrangement of the infrared line sensors 5 and 6 are shown.
  • a mechanical device shown are a blast furnace 1, a roller table 2 and a roller table 7, a stuffer box 3, a horizontal frame 4, two infrared line sensors 5 and 6 and the reversing roughing following finishing line 8 is a FIG 1 not shown rolled strip from the blast furnace-1 transported in the direction of roller table 7, this is referred to as an odd rolling pass. If the rolled strip is transported by the roller table 7 in the direction of the blast furnace 1, this is referred to as a straight pass.
  • the infrared line sensor 5 or 6 is used depending on the rolling direction. For odd rolling passes If the infrared line sensor 5 is used, in straight rolling passes, the infrared line sensor 6 is used for tape end detection. The individual whale stitches are repeated until the desired rolled strip thickness is reached. Subsequently, the rolled strip is transported with the roller table 7 in the direction of finishing mill 8.
  • the hot rolling mill shown in FIG 2 is also referred to as a continuous roughing.
  • the mechanical device shown is a blast furnace 10, the roller table 11, the infrared line sensors 12, 12' and 12 '', the edger stand 13, 13 'and 13' ', the horizontal stand 14, 14' and 14 '' and the continuous roughing following finishing line 15.
  • the rolled strip is transported from the blast furnace 10 in the direction of finishing mill 15.
  • FIG. 3 shows a signal course determined by the infrared line sensor.
  • the abscissa represents a time course showing a period of approximately 2 minutes and 50 seconds.
  • the ordinate shows the intensity of the thermal 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.
  • the illustrated diagram shows four rolled strip passes, ie the infrared line sensor has recorded four tape head and four tape foot signals.
  • the Walzband barn shown in the fourth graph shows strong fluctuations of the detected by the infrared line sensor signal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Control Of Metal Rolling (AREA)
  • Bridges Or Land Bridges (AREA)
  • Road Repair (AREA)

Claims (10)

  1. Procédé pour faire fonctionner un train de laminoir à chaud, comprenant au moins une cage (3, 13, 13', 13") refouleuse et au moins un capteur de détermination de la position d'extrémité du feuillard, une optimisation de la répartition en largeur de feuillard d'au moins une extrémité d'un feuillard laminé étant obtenue par un système de calcul, caractérisé en ce que l'on effectue la détermination de la position d'extrémité du feuillard par une détection sous forme de lignes du rayonnement infrarouge du feuillard laminé en utilisant un capteur (5, 6, 12, 12', 12") de lignes infrarouges qui fournit un signal de sortie qui dépend du rayonnement et dont les fronts indiquent l'extrémité de feuillard détectée.
  2. Procédé suivant la revendication 1, caractérisé en ce que la zone de mesure du capteur (5, 6, 12, 12', 12") de lignes infrarouges s'étend transversalement à la direction de passage du feuillard.
  3. Procédé suivant la revendication 1, caractérisé en ce que la zone de mesure du capteur (5, 6, 12, 12', 12") de lignes infrarouges s'étend longitudinalement à la direction de passage du feuillard.
  4. Procédé suivant la revendication 2 ou 3, caractérisé en ce que l'on détecte la position d'extrémité du feuillard en amont de la cage (3, 13, 13', 13") refouleuse.
  5. Procédé suivant la revendication 2 ou 3, caractérisé en ce que l'on détecte la position d'extrémité du feuillard en aval de la cage (3) refouleuse.
  6. Procédé suivant la revendication 2 ou 3, caractérisé en ce que l'on détecte la position d'extrémité du feuillard en amont et en aval de la cage (3) refouleuse.
  7. Installation pour faire fonctionner un train de laminoir à chaud comprenant au moins une cage (3, 13, 13', 13") refouleuse et au moins un capteur de détermination de la position d'extrémité du feuillard, une optimisation de la répartition en largeur de feuillard d'au moins une extrémité d'un feuillard laminé pouvant être obtenue par un système de calcul et le capteur étant constitué sous la forme d'un capteur (5, 6, 12, 12', 12") de lignes infrarouges détectant du rayonnement infrarouge et fournissant un signal de sortie dont les fronts indiquent une détection d'une extrémité de feuillard.
  8. Installation suivant la revendication 7, caractérisée en ce que le capteur (5, 6, 12, 12', 12") de lignes infrarouges est monté en amont de la cage (3, 13, 13', 13") refouleuse.
  9. Installation suivant la revendication 7, caractérisée en ce que le capteur (6) de lignes infrarouges est monté en aval de la cage (3) refouleuse.
  10. Installation suivant la revendication 7, caractérisée en ce qu'un capteur (5) de lignes infrarouges est monté en amont et un capteur (6) de lignes infrarouges en aval de la cage (3) refouleuse.
EP01980167A 2000-09-29 2001-09-17 Procede et dispositif pour le fonctionnement d'un train de laminage continu a chaud equipe d'au moins une cage refouleuse Expired - Lifetime EP1320425B1 (fr)

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 (fr) 2000-09-29 2001-09-17 Procede et dispositif pour le fonctionnement d'un train de laminage continu a chaud equipe d'au moins une cage refouleuse

Publications (2)

Publication Number Publication Date
EP1320425A1 EP1320425A1 (fr) 2003-06-25
EP1320425B1 true EP1320425B1 (fr) 2006-05-24

Family

ID=7658208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01980167A Expired - Lifetime EP1320425B1 (fr) 2000-09-29 2001-09-17 Procede et dispositif pour le fonctionnement d'un train de laminage continu a chaud equipe d'au moins une cage refouleuse

Country Status (7)

Country Link
US (1) US6786071B2 (fr)
EP (1) EP1320425B1 (fr)
JP (1) JP2004509763A (fr)
AT (1) ATE327057T1 (fr)
DE (2) DE10048470A1 (fr)
ES (1) ES2263666T3 (fr)
WO (1) WO2002026408A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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
WO2007010567A1 (fr) * 2005-07-20 2007-01-25 Euroball S.P.A. Traitement thermique d’éléments de roulement pour paliers, et four pour mettre en œuvre ce traitement
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
DE112019001631T5 (de) 2018-03-28 2021-01-28 Sintokogio, Ltd. Rollenpressmaschine, Steuer- und/oder Regelungssystem einer Rollenpressmaschine, und Steuer- und /oder Regelungsverfahren einer Rollenpressmaschine

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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 (fr) * 1981-02-02 1982-08-11 Hoogovens Groep B.V. Dispositif de mesure de température à balayage
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

Also Published As

Publication number Publication date
JP2004509763A (ja) 2004-04-02
WO2002026408A1 (fr) 2002-04-04
ES2263666T3 (es) 2006-12-16
DE50109898D1 (de) 2006-06-29
US20030164017A1 (en) 2003-09-04
EP1320425A1 (fr) 2003-06-25
DE10048470A1 (de) 2002-04-25
ATE327057T1 (de) 2006-06-15
US6786071B2 (en) 2004-09-07

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