EP0776710B1 - Dispositif pour influencer le profil d'une bande laminée - Google Patents

Dispositif pour influencer le profil d'une bande laminée Download PDF

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Publication number
EP0776710B1
EP0776710B1 EP96118147A EP96118147A EP0776710B1 EP 0776710 B1 EP0776710 B1 EP 0776710B1 EP 96118147 A EP96118147 A EP 96118147A EP 96118147 A EP96118147 A EP 96118147A EP 0776710 B1 EP0776710 B1 EP 0776710B1
Authority
EP
European Patent Office
Prior art keywords
spray
strip
spray bars
bars
width
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
EP96118147A
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German (de)
English (en)
Other versions
EP0776710A1 (fr
Inventor
Jürgen Seidel
Rüdiger Holz
Klaus Klamma
Hans-Joachim Pölking
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.)
SMS Siemag AG
Original Assignee
SMS Demag 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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP0776710A1 publication Critical patent/EP0776710A1/fr
Application granted granted Critical
Publication of EP0776710B1 publication Critical patent/EP0776710B1/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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
    • B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally

Definitions

  • the invention relates to a device for influencing the profile of in at least one stand of rolled strip with the stand associated with it Adjusting, bending and possibly shifting devices and the rollers assigned spray bars for optionally controlled spraying of cooling and / or lubricant and associated with the two end regions of the rollers further spray bars and a control device.
  • the strip edge areas face the Belt areas different loads on the constancy of the Adversely affect the thickness of the tape across its width.
  • the thermal crowning and the stronger one Roller wear in the belt edge areas one opposite the belt center would cause thicker edge profile is essentially by the Material cross flow behavior in the direction of the width of the material shows a sharp decrease in thickness Edge area caused.
  • the additional wear in the edge area is at Cold rolling is low and the thermal crowning is largely due to cooling of the rolls in the middle area balanced, so that mainly due to material flow behavior caused thinner strip edge profiles towards the center of the strip arise, the so-called edge drops.
  • the size should edge drops on rolled strips. It is proposed that further spray bars outside the areas occupied by the strip to be rolled of the rollers are arranged, displacement drives the corresponding Adjustment of the other spray bars outside of the roller area occupied by the belt guarantee. Within the area of the rolls occupied by the belt Additional spray bars are provided, by means of which the roller contour is heated should be influenced. In the strip edge area of the rollers, on the one hand heated and cooled on the other hand, creating extreme tension in this area of the rollers occur, which in addition to the usual high wear in the Band edge area cause even greater wear. An optimal reduction edge drop is not possible, especially since cooling down to the respective Bale end is omitted.
  • EP-A-0 542 640 discloses a cooling device for the rolls of one Hot rolling mill.
  • Movable nozzles or spray bars are used to cool the rollers proposed that allow a variable influence on the cooling effect without that the individual nozzles have to be switched off.
  • DE-A-3 614 487 discloses a device for roll temperature control in which outside the areas of the rolls occupied by the rolled strip, a heater and within the areas occupied by the rolled strip that are to be cooled. By a sharp boundary that coincides with the band edge ensures that about the same heat conditions on both sides of the belt edges is achieved. It is not possible to remove edge drops.
  • the object of the invention is to better minimize the edge drops or to be completely eliminated without significantly reducing the belt tension distribution to adversely affect.
  • Spray bars can also be applied to the roller bales in the belt edge areas cool more if necessary.
  • the roll diameter in the band edge area are reduced by the additional cooling.
  • the extension of the Effective range of the other spray bars from the respective bale end over the this facing band edge also ensures that the through Heat conduction to the bale ends of the rollers is better dissipated and thus an optimal temperature drop in the axial direction of the rolls in Strip edge area is obtained, which in turn enlarges the roll gap in the band edge area. But that is what the Material cross flow behavior counteracted edge drop counteracted.
  • the further spray bars that can be assigned to the rollers are usually only the Assigned work rolls, because of this through the rolling work and the contact with the Rolling material are subjected to the greatest thermal stress.
  • spray medium which a different temperature than the spray medium for the spray bars, preferably has a lower temperature, e.g. a common one Tank provided for the spray medium and the temperature of the spray medium on the temperature for the spray bars can be set, and the spray medium for the further spray bar can be cooled by a controllable cooler.
  • a common one Tank provided for the spray medium and the temperature of the spray medium on the temperature for the spray bars can be set, and the spray medium for the further spray bar can be cooled by a controllable cooler.
  • control device that functions as a forward control works and at the strip inlet side measured and / or specified strip data are used, stored or calculated, optimal values of Select spraying widths, spraying agent intensity and spraying agent temperature and for appropriate regulation.
  • a backward regulation is also possible, whereby a combination of the forward and reverse control is also conceivable.
  • the measurement results for the reverse control can be used to determine the optimal values of spray widths, spray medium intensity and spray medium temperature and / or for optimizing the control device of the forward control be used.
  • a memory optimal values for the spray widths, spray medium intensities and / or to select coolant temperatures a computer, the corresponding Functions for the optimal values of the spray widths, spray agent intensities and / or coolant temperatures are available with the help of these Measurement results the optimal values for the actuators of the control device calculate.
  • FIG. 1 shows a roll stand 1 for rolling strip 2, on the latter
  • Inlet side spray bars 3, 3a are provided for coolants and / or lubricants.
  • the spray bars 3, 3a are fed by a pump 4 from a tank 5.
  • Further spray bars 6, 6a are directed towards the end regions of the rollers. she are also fed from the tank 5 via a pump 7.
  • the spray medium is given via a cooling device 8, which the temperature of the Spray medium according to the given by a computer, not shown Values can be optimally regulated by means of a temperature controller 9.
  • About valves 10 can the spray width and spray intensity of the further spray bars 6, 6a can be set.
  • the spray medium is collected together and passed over a return line 11 in the common tank 5.
  • the Possibility of separate tanks for the two differently tempered Provide spray media In this case, the collection of spray media sensibly carried out separately.
  • Fig. 2a shows a work roll 12, from which a wide strip 2 is rolled.
  • the further spray bars 6, 6 'and the tape outlet side are the other on the belt inlet side further spray bars 13, 13 'can be seen, their effective width to the width of the Rolling strip 2 is set and narrow in contact with the strip edges cover standing areas of the work rolls 12.
  • nozzles 14 to 14 n are aligned in the direction of the bale end of the work rolls 12. Only the outer nozzles 15, 15 ', 15 "have a spray direction that deviates from this direction.
  • the nozzles 14 to 14 n and 15, 15', 15" can be switched on and off individually, in order to reduce the spray width to the width of the to be able to adjust strip 2 to be rolled.
  • FIG. 4a shows, similarly to FIG. 2a, the spray bars 6, 6 'on the tape inlet side and on the tape outlet side the spray bars 13, 13', the width of the spray bars 6, 6 'and 13, 13' being chosen in this way is that they can optimally cool the bales of the work rolls 12 in the band edge contact area from minimum to maximum bandwidth.
  • Fig. 5 shows the bale contour 17 of the work roll 12 after about 60 minutes Rolling process, with no further exposure to the roll surface Spray bars 6, 6 '; 13, 13 '; 16, 16 'has taken place. It has become the usual one thermal crowning set. There is a slower one in the band edge contact area Recognize a drop in crowning. This slow decline in crowning is not in the Location, the edge drop formation caused by the material cross flow behavior in the Avoid band edge area.
  • FIG. 6 shows a bale contour corresponding to FIG. 5.
  • additional spray beams 6, 6 '; 13, 13 '; 16, 16 'worked The strong crowning drop in the band edge contact area is set in such a way by the additional cooling that that by the material cross flow behavior caused edge-drop can be reduced or minimized.
  • Fig. 7 shows a schematic representation of the invention Control device.
  • the band 2 can be seen, which is characterized by a number of Scaffolding is cold rolled.
  • the figure shows a four-high scaffold 18, which the edge-drop control according to the invention is assigned to during a Sexto scaffold 19 is shown with the usual flatness control.
  • the Edge-drop control according to the invention can of course also have several or all stands of a rolling mill.
  • the measured values are saved using a computer 21 compared to which the optimal cooling water temperature and the optimal Control of the individual nozzles are also stored.
  • the read ones Cooling water temperatures as well as the signals for the nozzle control are on the coolant temperature control circuit 22 or on the nozzle assignment control circuit 23 given.
  • receptacles 20, receptacles 24, 24 ' which also the band profile, especially in the band edge area, the bandwidth and measure the band tension distribution.
  • Controller 25 supplied, which corrects the measured values to a optimal spray width, spray medium intensity and coolant temperature. This Measurement results can also be used for this purpose, which are stored in the computer 21 correct stored values.

Claims (11)

  1. Dispositif pour influencer le profil d'une bande (2) laminée à froid dans au moins une cage de laminoir (1), comportant des dispositifs de positionnement, de cintrage et le cas échéant de déplacement associés à la cage de laminoir (1), ainsi que des premières barres de projection (3, 3a) associées aux cylindres (12) et destinées à la projection, le cas échéant régulée, de réfrigérant et/ou de lubrifiant, et comportant des secondes barres de projection (6, 6', 6a ; 13, 13' ; 16, 16') associées aux deux zones d'extrémité des corps des cylindres (12), caractérisé en ce que la zone d'action des secondes barres de projection (6, 6', 6a ; 13, 13'; 16, 16') s'étend chacune depuis une extrémité du corps de cylindre au-delà de l'arête de la bande laminée orientée vers cette extrémité du corps de cylindre jusque dans la zone de l'arête de la bande laminée à froid (2), les buses de projection (14 à 14n ; 15, 15', 15") des secondes barres de projection (6, 6' ; 13, 13' ; 16, 16') attaquant les cylindres (12) depuis une extrémité respective du corps de cylindre jusqu'à une distance prédéterminée au-delà de l'arête de bande orientée vers celle-ci.
  2. Dispositif selon la revendication 1, caractérisé en ce que les secondes barres de projection (6, 6' ; 13, 13' ; 16, 16') sont associées seulement aux cylindres de travail (12).
  3. Dispositif selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que les secondes barres de projection (6, 6' ; 13, 13' ; 16, 16') sont agencées du côté entrée et/ou sortie de la cage respective (18).
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les buses de projection (14 à 14n, 15, 15') des secondes barres de projection (6, 6' ; 13, 13' ; 16, 16') présentent une direction de projection avec une composante orientée vers une extrémité du corps de cylindre.
  5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la largeur de travail des buses de protection actives (14 à 14n; 15, 15') des secondes barres de projections (6, 6' ; 13, 13' ; 16, 16') peut être adaptée à la largeur de la bande laminée.
  6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la température du fluide à projeter par les secondes barres de projection (6, 6' ; 13, 13' ; 16, 16') diffère de la température du fluide à projeter par premières les barres de projection (3, 3a).
  7. Dispositif selon l'une quelconque des revendications 1 à 6, comportant un dispositif de réglage pour influencer le profil de la bande laminée à froid dans la zone de l'arête de bande, caractérisé en ce qu'il est prévu, du côté entrée de la cage de laminoir respective, des capteurs (20) qui mesurent l'épaisseur, le profil en particulier dans la zone de l'arête de bande, la largeur et/ou la contrainte de la bande laminée à froid (2) entrant, et en ce qu'il est prévu un calculateur (21) via lequel on peut déterminer des largeurs de projection, des intensités de projection et/ou les températures du réfrigérant pour les secondes barres de projection (6, 6' ; 13, 13' ; 16, 16'), qui sont optimales pour le résultat de mesure des capteurs (20) et mémorisées préalablement.
  8. Dispositif selon l'une quelconque des revendications 1 à 6, comportant un dispositif de réglage pour influencer le profil de la bande laminée à froid dans la zone de l'arête de bande, caractérisé en ce qu'il est prévu un calculateur (21), auquel on peut imposer l'épaisseur, le profil en particulier dans la zone de l'arête de bande, la largeur et/ou la contrainte de la bande entrant, et qui détermine, en se rapportant à un modèle de calcul, des largeurs de projection, des intensités de projection et/ou les températures du réfrigérant pour les secondes barres de projection (6, 6' ; 13, 13' ; 16, 16'), qui sont optimales et mémorisées préalablement.
  9. Dispositif selon l'une ou l'autre des revendications 7 et 8, caractérisé en ce qu'il est prévu des capteurs (24, 24') du côté sortie de la cage de laminoir respective, en ce que les capteurs (24, 24') sont capables de mesurer le profil en particulier dans la zone de l'arête de bande, la largeur et la répartition de contrainte de la bande laminée (2) sortant, et en ce que les valeurs mesurées sont amenées au dispositif de réglage (25) pour les corriger à des valeurs optimales par rapport à une largeur de projection, une intensité de projection et/ou une température du réfrigérant pour les secondes barres de projection (6, 6' ; 13, 13' ; 16, 16').
  10. Dispositif selon la revendication 9, caractérisé en ce que les valeurs mesurées à la sortie de la cage respective par les capteurs (24, 24') sont capables d'influencer de façon corrective l'opération de calcul dans le calculateur (21).
  11. Dispositif selon l'une quelconque des revendications 7 à 10, caractérisé en ce que le ou les calculateurs (21) sont capables de calculer des valeurs optimales pour les largeurs de projection, les intensités de projection et/ou les températures du réfrigérant pour les secondes barres de projection (6, 6' ; 13, 13' ; 16, 16').
EP96118147A 1995-11-20 1996-11-13 Dispositif pour influencer le profil d'une bande laminée Expired - Lifetime EP0776710B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19543168 1995-11-20
DE19543168 1995-11-20

Publications (2)

Publication Number Publication Date
EP0776710A1 EP0776710A1 (fr) 1997-06-04
EP0776710B1 true EP0776710B1 (fr) 2001-12-19

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EP96118147A Expired - Lifetime EP0776710B1 (fr) 1995-11-20 1996-11-13 Dispositif pour influencer le profil d'une bande laminée

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Country Link
US (1) US5799523A (fr)
EP (1) EP0776710B1 (fr)
JP (1) JP3895812B2 (fr)
KR (1) KR970025749A (fr)
CN (1) CN1079709C (fr)
AT (1) ATE211031T1 (fr)
CA (1) CA2190691A1 (fr)
DE (1) DE59608495D1 (fr)
ES (1) ES2170190T3 (fr)
RU (1) RU2184630C2 (fr)

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US10994316B2 (en) 2015-12-23 2021-05-04 Posco Straightening system and straightening method
CN106493177B (zh) * 2016-10-31 2018-06-26 武汉钢铁有限公司 一种基于csp工艺的不同宽度规格带钢混合轧制方法
CN107377632B (zh) * 2017-08-11 2020-03-27 张家港联峰钢铁研究所有限公司 一种缩小钢筋头尾尺寸差的温度控制系统以及操作方法
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JPS6195710A (ja) * 1984-10-17 1986-05-14 Kobe Steel Ltd 圧延板のエツジドロツプ抑制方法
NL8403821A (nl) * 1984-12-17 1986-07-16 Hoogovens Groep Bv Inrichting voor het koelen van een werkwals in een walstuig voor het walsen van metaalband.
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DE3614487A1 (de) * 1986-04-29 1987-11-05 Bbc Brown Boveri & Cie Verfahren und vorrichtung zur walzentemperierung in kaltwalzwerken
US5212975A (en) * 1991-05-13 1993-05-25 International Rolling Mill Consultants, Inc. Method and apparatus for cooling rolling mill rolls and flat rolled products
JP2709777B2 (ja) * 1992-05-28 1998-02-04 株式会社日立製作所 圧延機の制御方法および制御装置

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JP3895812B2 (ja) 2007-03-22
US5799523A (en) 1998-09-01
RU2184630C2 (ru) 2002-07-10
JPH09164406A (ja) 1997-06-24
ATE211031T1 (de) 2002-01-15
EP0776710A1 (fr) 1997-06-04
DE59608495D1 (de) 2002-01-31
KR970025749A (ko) 1997-06-24
ES2170190T3 (es) 2002-08-01
CN1151914A (zh) 1997-06-18
CA2190691A1 (fr) 1997-05-21
CN1079709C (zh) 2002-02-27

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