EP1336437B1 - Contrôle de la planéité des cotés d'une bande - Google Patents

Contrôle de la planéité des cotés d'une bande Download PDF

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Publication number
EP1336437B1
EP1336437B1 EP03003777A EP03003777A EP1336437B1 EP 1336437 B1 EP1336437 B1 EP 1336437B1 EP 03003777 A EP03003777 A EP 03003777A EP 03003777 A EP03003777 A EP 03003777A EP 1336437 B1 EP1336437 B1 EP 1336437B1
Authority
EP
European Patent Office
Prior art keywords
flatness
working rollers
heat
metal strip
heat requirement
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
EP03003777A
Other languages
German (de)
English (en)
Other versions
EP1336437A1 (fr
Inventor
Kai Friedrich Dr. Karhausen
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.)
Hydro Aluminium Deutschland GmbH
Original Assignee
Hydro Aluminium Deutschland GmbH
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 Hydro Aluminium Deutschland GmbH filed Critical Hydro Aluminium Deutschland GmbH
Publication of EP1336437A1 publication Critical patent/EP1336437A1/fr
Application granted granted Critical
Publication of EP1336437B1 publication Critical patent/EP1336437B1/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
    • B21B2263/00—Shape of product
    • B21B2263/04—Flatness
    • 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
    • B21B27/106—Heating the rolls

Definitions

  • the invention relates to a method and a device for flatness control of a metal strip during cold rolling, especially when reducing rolls, with the help at least one rolling stand with work rolls, means for at least partially heating the work rolls and a control in which or at which of Heat requirement of band edge near areas of the work rolls is determined and the corresponding areas of Work rolls are heated.
  • a generic Method and a generic device are known from DE-A 2 743 130 b.
  • a disadvantage of the previously known methods is that due to the scheme with the help of a Planlageer posted only a compensation already incurred band edge error can be done. The Band edge errors can not be prevented.
  • a relatively high heating power provided be used to actually influence band edge errors, because it is in the above procedure due to the tracking control to larger temperature gradients that comes using high heat outputs need to be corrected.
  • the invention thus has the object, a method or an apparatus for carrying out the method for To provide, with which or with which the Occurrence of band edge errors more effectively prevented can be.
  • the previously derived and indicated task for a method for Flatness control of a metal strip during rolling thereby solved that the heat requirement of the band edge near areas the work rolls are predetermined and depending on that Means for at least partially heating the Work rolls are controlled.
  • the invention Predicting the heat requirement of the strip edge near Areas of the work rolls and the corresponding Control of the means for at least partial heating the work rolls ensures that the Work rolls beyond the band edge homogeneously thermal expand and the nip thus also in the field of Band edges remains constant. The occurrence of Band edge errors can thus be effectively suppressed.
  • the inventive method is therefore a vor Kunststoffndes method, which is not on a subsequent measurement of the flatness of the strip edge instructed to suppress banker error.
  • Is in accordance with an embodiment of the invention Process for the flatness control of a metal strip during Rolls of heat demand located next to the belt Zones of the work rolls predetermined so that can Heating the work rolls on the next to the tape restricted zones. Only the supplied exactly required amount of energy to the nip to keep flat at the band edge.
  • Plan position acquisition to improve predetermination the heat demand a flatness measured value of the metal strip after rolling, especially with a Flatness measuring roll, determined, the flatness of the rolled metal strip are checked and parameters for Predetermination of heat demand, if necessary be adjusted.
  • a particularly exact flatness control is according to a next advantageous embodiment of the inventive method achieved in that the Control by an at least partially continuous Process simulation predicts the heat requirement. In addition, also deviations during operation the rolls for predetermining the heat demand be taken into account.
  • the accuracy of the prediction of the heat demand can be further increased by, according to a further developed embodiment, the process simulation the energy balance, especially the energy flows, calculated between the metal strip and the work rolls, to predict the heat requirement.
  • the process simulation the energy balance, especially the energy flows, calculated between the metal strip and the work rolls, to predict the heat requirement.
  • this embodiment can be developed become, by the energy flows dependent on Material data of the metal strip and / or data of the Roll stand and / or data of the current rolling situation and / or the flatness measured value.
  • the inventive method is thus neither a certain material of the metal strip, for example Aluminum or an aluminum alloy, limited, still There is a limitation on what to use Rolling mills. The process is thus almost all Rolling operations used, which flatness error in Have tape edge near as a potential source of error.
  • Heat is supplied at least partially continuously, it does not come to the training of large temporal Temperature fluctuations in the next to the band located zones of the work roll, the regulated Need to become.
  • the per roll revolution to be introduced Heat for compensation is therefore relatively low, which too low to be installed heating and correspondingly inexpensive construction methods leads.
  • the heat supply occurs before the inlet of the metal strip or behind the nip, the heat can be right next to the areas of the work rolls are fed, which next contact with the metal strip to be rolled to have. Preference is given to the heating of the Work roll directly behind the nip, since that in the Range of work rolls introduced heat profile already smoothed by heat dissipation before the Area of the work roll with the metal strip to be rolled comes into contact.
  • the heat supply by induction and / or convection and / or radiation ensures on the one hand, that the heat, for example, by resistance heating means Current flow through the work rolls themselves, Infrared radiation, laser radiation or the Spraying with hot lubricants, especially accurate can be controlled and metered and on the other hand, that the required heat sources are correspondingly small and can be made compact.
  • a precise Dosing of the heat supplied can also so far known device for flatness control clearly be improved, since the previously known systems only allow an inaccurate temperature control.
  • the Improved temperature control can improve the thermal profile the work rolls in the strip edge closer and the band edge errors are reduced.
  • suitable in particular inductively working means for partial heating of the work rolls used in a device according to the invention as they the can provide required amounts of energy, a allow exact dosage of these amounts of energy and beyond that are not susceptible to interference.
  • the predetermination of the heat demand of the strip edge near Areas of the work rolls can be further improved in accordance with a next educated Embodiment of the embodiment of the invention Device according to the invention, a flatness measuring roller for flatness detection of the metal strip after rolling is provided. As already described, through the Subsequent verification of flatness the parameters for Predetermination of the heat demand to be adjusted.
  • a particularly accurate and fast prediction of the Heat demand at the strip edge near areas of Work rolls is according to a next embodiment achieved by having a process computer with integrated simulation module provided as a controller is.
  • the illustrated in Figure 1 embodiment of a Device for controlling the flatness during rolling of a Metal strip 1 has two work rolls 2,3 in one Roll stand, means 4 for at least partial heating the work roll 2, a controller 5 and a Flatness measuring roller 6 on.
  • the controller calculates. 5 in a simulation of the rolling process, first the ideal rolling work that has to be done. This sets together from the forming work to Material thickness reduction, the resulting Forming heat and the frictional heat in the actual Rolling process.
  • the process simulation is now for the Energy turnover in the nip which the band or the Working roll fed specific heat output calculated on the contact area.
  • the controller 5 engages the means 4 for at least partially heating the Work roll 2 in the predetermination of the heat demand via a process simulation to the data 8 of the Roll stand and material data 9 to be rolled Material back.
  • means 4 for at least partial Heating the work rolls 2 is here an inductive Heat source provided, which behind the nip 7 is arranged. This arrangement allows a smoothing of the on the work roll resulting thermal profile in Circumferential direction by heat dissipation, which by the accurately operating inductive heat source is affected. The thermal profile of the work roll 2 is thus also almost constant in the axial direction.
  • the process simulation results in an ideal rolling work of 919 kW. From the energy balance of the forming work to reduce the material thickness, the forming heat generated and the frictional heat in the rolling process results from the simulation of energy turnover in the nip that the band a specific heat output of 44.6 W / mm 2 and the roller a thermal output of 7.8 W / mm 2 based on the contact surface is supplied. The calculation shows that the means 4 for at least partially heating the work roll of the work roll 2 next to the strip edge has to deliver a power of 52 W / mm 2 .
  • Fig. 2 shows while the area of a band edge of a metal strip. 1 as well as the thermal profile 11,12 of the work rolls in Band edge area 10 with and without edge heating.
  • the thermal profile of the work rolls without edge heating 11 is not homogeneous in the band edge, since due to the decreasing temperature of the outside Work roll the diameter of the stripper already in Area of the band edge decreases.
  • the work rolls with edge heating 12 shows is through the additional heat supply by means of the heat source 4 the thermal profile in the area of the band edges constant.
  • the complete metal band is subject to the same Rolling conditions, so that prevents band edge error become.
  • the additional heat is the level Part of the nip opening to those in Fig. 2 with ⁇ X designated route over the contact surface with the Pulled out metal band 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Wire Bonding (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Magnetic Heads (AREA)

Claims (13)

  1. Procédé de guidage plan d'une bande métallique dans le laminage à froid, en particulier dans le laminage à froid réducteur, à l'aide d'au moins une cage de laminoir avec des cylindres de travail, des moyens d'échauffement au moins partiel des cylindres de travail et une commande, dans lequel le besoin thermique des zones des cylindres de travail proches des arêtes de bande est déterminé et ces zones des cylindres de travail sont chauffées,
    caractérisé en ce que
    ledit procédé est un procédé à commande pilote dans lequel le besoin thermique des zones des cylindres de travail proches des arêtes de bande est pré-déterminé et, indépendamment de cela, le moyen d'échauffement au moins partiel des cylindres de travail est commandé.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le besoin thermique des zones des cylindres de travail situées à proximité de la bande est pré-déterminé.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    une saisie de la planéité destinée à l'amélioration de la prédétermination du besoin thermique fournit une valeur de planéité de la bande métallique après le laminage, en particulier à l'aide d'un rouleau de mesure de planéité.
  4. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    la commande pré-détermine le besoin thermique à l'aide d'une simulation de processus continue au moins partielle.
  5. Procédé selon la revendication 4,
    caractérisé en ce que
    la simulation calcule le bilan énergétique, en particulier les flux énergétiques entre la bande métallique et les cylindres de travail, afin de pré-déterminer le besoin thermique.
  6. Procédé selon la revendication 5,
    caractérisé en ce que
    les flux énergétiques sont déterminés en fonction de données relatives au matériau de la bande métallique et/ou de données relatives à la cage de laminoir et/ou de données relatives à la situation de laminage concernée et/ou de la valeur de mesure de la planéité.
  7. Procédé selon l'une quelconque des revendications 1 à 6
    caractérisé en ce que
    la chaleur est amenée de façon au moins partiellement continue.
  8. Procédé selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    l'amenée de chaleur s'effectue avant l'entrée de la bande métallique ou derrière l'emprise.
  9. Procédé selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce que
    l'amenée de chaleur s'effectue par induction et/ou convection et/ou rayonnement et/ou conduction thermique.
  10. Dispositif de guidage plan dans le laminage à froid d'une bande métallique, comprenant au moins une cage de laminoir avec des cylindres de travail et des moyens d'échauffement au moins partiel des cylindres de travail, dans lequel sont prévus des moyens garantissant un dosage énergétique précis, en particulier des moyens fonctionnant par induction, pour l'échauffement au moins partiel des cylindres de travail, et destiné à réaliser un procédé selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    une commande pré-déterminant le besoin thermique aux zones des cylindres de travail proches des arêtes de bande et commandant les moyens d'échauffement au moins partiel des cylindres de travail est prévue.
  11. Dispositif selon la revendication 10,
    caractérisé en ce que
    un rouleau de mesure de planéité est prévu pour la saisie de la planéité de la bande métallique après le laminage.
  12. Dispositif selon la revendication 10 ou 11,
    caractérisé en ce que
    les moyens d'échauffement au moins partiel des cylindres de travail sont disposés avant l'entrée de la bande métallique et/ou derrière l'emprise.
  13. Dispositif selon l'une quelconque des revendications 10 à 12,
    caractérisé en ce que
    un ordinateur industriel avec module de simulation intégré est prévu comme commande.
EP03003777A 2002-02-19 2003-02-19 Contrôle de la planéité des cotés d'une bande Expired - Lifetime EP1336437B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10206758A DE10206758B4 (de) 2002-02-19 2002-02-19 Bandkanten-Planheitssteuerung
DE10206758 2002-02-19

Publications (2)

Publication Number Publication Date
EP1336437A1 EP1336437A1 (fr) 2003-08-20
EP1336437B1 true EP1336437B1 (fr) 2005-10-19

Family

ID=27618755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03003777A Expired - Lifetime EP1336437B1 (fr) 2002-02-19 2003-02-19 Contrôle de la planéité des cotés d'une bande

Country Status (4)

Country Link
EP (1) EP1336437B1 (fr)
AT (1) ATE306992T1 (fr)
DE (2) DE10206758B4 (fr)
ES (1) ES2251632T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4074430B1 (fr) * 2020-01-29 2024-03-27 Primetals Technologies Japan, Ltd. Laminoir et procédé de laminage pour tôle métallique
CN114798755B (zh) * 2022-04-26 2023-02-17 东北大学 一种分析冷连轧过程中热凸度对板形影响的方法
WO2024041892A1 (fr) 2022-08-24 2024-02-29 Sms Group Gmbh Procédé, produit de programme informatique et cage de laminage à froid pour le laminage à froid d'une bande métallique
DE102023200055A1 (de) 2022-08-24 2024-02-29 Sms Group Gmbh Verfahren, Computerprogrammprodukt und Kaltwalzgerüst zum Kaltwalzen eines Metallbandes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT345237B (de) * 1976-12-28 1978-09-11 Voest Ag Vorrichtung zum walzen von band- oder tafelfoermigem walzgut
JPS63171209A (ja) * 1987-01-07 1988-07-15 Nippon Steel Corp 板圧延における形状制御方法およびその装置
GB2306362A (en) * 1995-10-31 1997-05-07 Davy Mckee Rolling of metal strip
DE19830034A1 (de) * 1998-06-26 1999-12-30 Mannesmann Ag Verfahren und Vorrichtung zum Walzen von Warmbändern

Also Published As

Publication number Publication date
ATE306992T1 (de) 2005-11-15
DE10206758A1 (de) 2003-08-28
DE10206758B4 (de) 2006-05-18
EP1336437A1 (fr) 2003-08-20
ES2251632T3 (es) 2006-05-01
DE50301385D1 (de) 2005-11-24

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