EP1336437A1 - 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
EP1336437A1
EP1336437A1 EP03003777A EP03003777A EP1336437A1 EP 1336437 A1 EP1336437 A1 EP 1336437A1 EP 03003777 A EP03003777 A EP 03003777A EP 03003777 A EP03003777 A EP 03003777A EP 1336437 A1 EP1336437 A1 EP 1336437A1
Authority
EP
European Patent Office
Prior art keywords
work rolls
flatness
heat
metal strip
rolling
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
Application number
EP03003777A
Other languages
German (de)
English (en)
Other versions
EP1336437B1 (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 controlling the flatness of a metal strip during rolling, especially with reducing rolling, with the help at least one roll stand with work rolls, means for at least partially heating the work rolls and a controller in which the Areas of the work rolls close to the belt edge require heat is determined and the corresponding areas of Work rolls are heated.
  • the conventional method uses mechanical Flatness actuators such as work roll bending, inflatable back-up rolls Work rolls tried the flatness of the strip edges to positively influence. These methods can do that improve the general flatness of the rolled product, avoiding or reducing belt edge errors is not possible with them.
  • a disadvantage of the previously known methods is that due to the scheme with the help of a Flat position detection only one adjustment already resulting band edge error can occur. The Belt edge errors can therefore not be prevented.
  • the "hot edge spray" process provided a relatively high heating output to actually influence band edge errors because in the above method due to the follow-up regulation to larger temperature gradients that comes using high heat outputs must be corrected.
  • the The invention is therefore based on the object of a method or a device for performing the method for To make available with which or with which Band edge defects more effectively prevented can be.
  • the method according to the invention is therefore a precontrol procedure, which does not apply to a subsequent measurement of the flatness of the strip edge is instructed to suppress banker errors.
  • Is according to an embodiment of the invention Method for controlling the flatness of a metal strip in Rolling the heat requirement of the next to the belt Zones of the work rolls predetermined, so it can Warm the work rolls on the next to the belt zones can be restricted. Only the exactly the amount of energy required to feed the roll gap to keep flat at the edge of the belt.
  • a particularly exact flatness control is according to one next advantageous embodiment of the achieved method in that the Controlled by an at least partially continuous Process simulation predetermines the heat requirement.
  • deviations can occur during operation of the rollers for predetermining the heat requirement 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.
  • the work done the resulting Frictional heat and heat conduction from the metal strip the work rolls and vice versa.
  • This embodiment can advantageously be further developed become dependent on the energy flows
  • 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 measurement value can be determined.
  • the method according to the invention is therefore neither based on certain material of the metal strip, for example Aluminum or an aluminum alloy, limited, yet there is limitation on which to use Rolling mills.
  • the procedure is almost all Rolling operations can be used, which flatness errors in Have near the strip edge as a potential source of error.
  • Heat is at least partially supplied continuously, there is no formation of large temporal Temperature fluctuations in the next to the band zones of the work roll that are corrected Need to become.
  • the one to be introduced per roller revolution Heat for compensation is relatively low, which insufficient heating power to be installed and leads according to inexpensive designs.
  • the heat is applied before the metal strip runs in or behind the nip, the heat can be right next to it the areas of the work rolls are fed, which next contact with the metal strip to be rolled to have.
  • the heating of the Work roll directly behind the roll gap, as that in the Area of the work rolls introduced heat profile is already smoothed by heat dissipation before the Area of the work roll with the metal strip to be rolled comes into contact.
  • the method according to the invention is the supply of heat by induction and / or convection and / or radiation.
  • this ensures that the heat supply, for example by means of resistance heating Current flow through the work rolls themselves, Infrared radiation, laser radiation or that Spray on with hot lubricants, particularly precisely can be controlled and dosed and on the other hand, that the required heat sources are correspondingly small and can be made compact.
  • the previously known devices to control flatness when rolling a metal strip at least one roll stand with work rolls and means for at least partially heating the work rolls improved by having an accurate dose of energy guaranteeing agents, especially inductive ones Means for at least partially heating the Work rolls are provided.
  • an exact Dosing of the heat supplied can also be done so far known device for flatness control clearly can be improved since the previously known systems only allow inaccurate temperature control.
  • the thermal profile can be improved of the work rolls closer to the edge of the strip and the band edge errors are reduced.
  • inductively working means for partial heating of the work rolls for use in a device according to the invention since it can provide required amounts of energy, a allow precise dosing of these amounts of energy and are also not susceptible to interference.
  • the heat demand to the Areas of the work rolls close to the belt edge predetermined and the means to at least partially Heating the work roll control provided the heat demand to the Areas of the work rolls close to the belt edge predetermined and the means to at least partially Heating the work roll control provided , the occurrence of ribbon edge defects can be effective be prevented and the quality of the rolled products be further increased.
  • Predetermination of the heat requirement of the edge near the belt edge Areas of the work rolls can be further improved by continuing according to a next 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.
  • the subsequent checking of the flatness of the parameters for Predetermination of the heat requirement can be adjusted.
  • the means to at least partially heat the Work rolls before the entry of the metal strip and / or arranged behind the roll gap so can be easily Way of the work roll in the areas close to the belt edge the heat before contact with the metal strip to be rolled are fed.
  • the arrangement of the means at least partial heating behind the nip as the Dissipation of the heat supplied until contact of the Work rolls with the metal strip to be rolled into one particularly homogeneous thermal profile of the work rolls leads.
  • FIG. 1 Flatness control device for rolling 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. Now the metal strip 1 with of this device, the controller 5 calculates in a simulation of the rolling process ideal rolling work that has to be done. This sets together from the forming work Material thickness reduction, the resulting Forming heat and the frictional heat actually Rolling process. In the process simulation is now for the Energy conversion in the roll gap that the strip or Work roll supplied specific heat output related calculated on the contact area. From the sum of these Thermal output then results in the thermal output that the Work roll 2 must be fed to jump in thermal profile of the work roll 2 in the area of Compensate band edge.
  • the controller 5 intervenes the means 4 for at least partially heating the Work roll 2 in the predetermination of the heat requirement via a process simulation on the data 8 of the Roll stand and material data 9 of the to be rolled Material back.
  • a means 4 to at least partially Heating the work rolls 2 is an inductive one Heat source provided, which is behind the nip 7th is arranged. This arrangement allows a smoothing of the thermal profile arising on the work roll in Circumferential direction by heat dissipation, which by the exactly working inductive heat source is influenced. The thermal profile of the work roll 2 is therefore also almost constant in the axial direction.
  • the process simulation results in ideal rolling work of 919 kW.
  • the simulation of the energy conversion in the roll gap shows that the strip has a specific heat output of 44.6 W / mm 2 and the roller has a heat output of 7.8 W / mm 2 based on the contact area is supplied.
  • the calculation shows that the means 4 for at least partially heating the work roll must supply the work roll 2 with a power of 52 W / mm 2 in addition to the strip edge.
  • Fig. 2 shows the area of a strip 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 area of the band edge because due to the decreasing temperature towards the outside Work roll the diameter of the work roll already in Area of the strip edge decreases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Wire Bonding (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Magnetic Heads (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
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 true EP1336437A1 (fr) 2003-08-20
EP1336437B1 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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114728315A (zh) * 2020-01-29 2022-07-08 普锐特冶金技术日本有限公司 轧制机以及金属板的轧制方法
DE102023200055A1 (de) 2022-08-24 2024-02-29 Sms Group Gmbh Verfahren, Computerprogrammprodukt und Kaltwalzgerüst zum Kaltwalzen eines Metallbandes
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2743130A1 (de) * 1976-12-28 1978-06-29 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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2743130A1 (de) * 1976-12-28 1978-06-29 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 437 (M - 765) 17 November 1988 (1988-11-17) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114728315A (zh) * 2020-01-29 2022-07-08 普锐特冶金技术日本有限公司 轧制机以及金属板的轧制方法
EP4074430A4 (fr) * 2020-01-29 2023-01-04 Primetals Technologies Japan, Ltd. Machine et procédé de laminage pour laminer des tôles métalliques
US12103060B2 (en) 2020-01-29 2024-10-01 Primetals Technologies Japan, Ltd. Rolling mill and rolling method for metal plate
DE102023200055A1 (de) 2022-08-24 2024-02-29 Sms Group Gmbh Verfahren, Computerprogrammprodukt und Kaltwalzgerüst zum Kaltwalzen eines Metallbandes
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

Also Published As

Publication number Publication date
DE10206758A1 (de) 2003-08-28
ATE306992T1 (de) 2005-11-15
DE10206758B4 (de) 2006-05-18
DE50301385D1 (de) 2005-11-24
EP1336437B1 (fr) 2005-10-19
ES2251632T3 (es) 2006-05-01

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