EP2656932A1 - Thermomechanisches Walzen einer Aluminiumplatte - Google Patents

Thermomechanisches Walzen einer Aluminiumplatte Download PDF

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Publication number
EP2656932A1
EP2656932A1 EP20120165758 EP12165758A EP2656932A1 EP 2656932 A1 EP2656932 A1 EP 2656932A1 EP 20120165758 EP20120165758 EP 20120165758 EP 12165758 A EP12165758 A EP 12165758A EP 2656932 A1 EP2656932 A1 EP 2656932A1
Authority
EP
European Patent Office
Prior art keywords
rolling
aluminum plate
temperature
pass
state variable
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.)
Withdrawn
Application number
EP20120165758
Other languages
German (de)
English (en)
French (fr)
Inventor
Matthias Dr. Kurz
Birger Dr. Schmidt
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
Priority to EP20120165758 priority Critical patent/EP2656932A1/de
Priority to BR112014026380-9A priority patent/BR112014026380B1/pt
Priority to US14/397,084 priority patent/US10131979B2/en
Priority to PCT/EP2013/057960 priority patent/WO2013160162A1/de
Priority to EP13719045.0A priority patent/EP2828011B1/de
Priority to CN201380020354.6A priority patent/CN104245166B/zh
Publication of EP2656932A1 publication Critical patent/EP2656932A1/de
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B2003/001—Aluminium or its alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2201/00—Special rolling modes
    • B21B2201/06—Thermomechanical rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature

Definitions

  • the invention relates to a method for reversely thermomechanical rolling of an aluminum plate in a rolling process with several rolling passes.
  • WO 2008/043684 discloses, for example, a method for tracking the physical condition of a hot plate or strip as part of the control of a rolling line for reversibly processing a hot plate or strip.
  • an initial state of the hot plate or hot strip from which at least one physical state variable is derivable is determined in a model and the state is cyclically updated during the processing of the hot plate using the model, wherein a tracking of the hot plate or hot strip and the condition influencing and / or reproducing operating parameters are taken into account.
  • EP 2 111 309 B1 discloses a method for thermomechanically controlled rolling of a batch of metal slabs into sheets or strips in a rolling mill having at least one rolling stand according to a rolling scheme comprising at least two rolling phases and applied to each slab of the batch.
  • a rolling phase applied to a slab or plate or a strip is followed by another rolling phase which is on another slab or plate or another strip on this rolling stand is applied.
  • the time interval between the start times of their rolling phases is always smaller than the sum of the periods of all rolling phases and all cooling phases of the rolling scheme.
  • the invention has for its object to provide an improved method for reversing thermomechanical rolling an aluminum plate.
  • characteristic data for the thermal guidance of the rolling process are specified and values of at least one state variable, from which a temperature of the aluminum plate can be derived, are continuously determined.
  • a pass schedule for the rolling process is determined, which provides a rolling break between at least two consecutive rolling passes during which the rolling of the aluminum plate is interrupted for its cooling.
  • An aluminum plate is understood in this application to mean a plate which consists of aluminum or an aluminum alloy.
  • a state variable is preferably a temperature averaged over a thickness of the aluminum plate or a surface temperature or a residual solidification or phase fractions or grain sizes or an enthalpy of the aluminum plate.
  • an aluminum plate is thus rolled temperature-controlled.
  • the temperature of the aluminum plate can be controlled and controlled during the rolling process.
  • the control of the temperature takes place by means of rolling breaks, in which the aluminum plate is cooled becomes.
  • the rolling temperature is known to significantly affect material properties of aluminum plates.
  • the temperature of the aluminum plate during the rolling process can be controlled such that subsequent finishing steps known in the art for thermally generating certain mechanical properties of the aluminum plate material become superfluous to the rolling.
  • Such manufacturing steps are, for example, solution heat treatment, quenching or curing of the aluminum.
  • a preferred embodiment of the invention provides that the characteristics associate at least one rolling pass a waiting thickness of the aluminum plate, and that the stitch plan provides for the beginning of a rolling break as soon as the thickness of the aluminum plate in this rolling pass reaches or falls below its waiting thickness assigned to it.
  • a further embodiment of the invention provides that the characteristics of at least one rolling break assign a Wiederanwalztemperatur the aluminum plate, and that the pass schedule provides for the termination of this rolling break, once the temperature of the aluminum plate reaches the Bachanwalztemperatur.
  • the aluminum plate cools during a rolling break to a defined temperature, namely the assigned to it Wiederanwalztemperatur. This advantageously improves the control and control of the temperature of the aluminum plate during the rolling process.
  • a further embodiment of the invention provides that the characteristic data contain a target temperature, and that the stitching plan determines a duration of a rolling break or a recoil temperature of the aluminum plate after a rolling break in such a way that the temperature of the aluminum plate after the last pass matches the target temperature.
  • a target temperature of the aluminum plate can be achieved in the last pass. This makes it possible to set advantageous material properties of the aluminum already at the end of the rolling process without expensive finishing.
  • a further embodiment of the invention provides that the characteristic data contain a cooling temperature, and that the aluminum plate is fed after the last rolling pass a cooling unit and cooled by the cooling unit to the cooling temperature.
  • the characteristics preferably also include a cooling rate, and the aluminum plate is cooled to the cooling temperature at the cooling rate after the last rolling pass by means of the cooling unit.
  • a particularly preferred embodiment of the invention provides that at least one rolling pass of another aluminum plate is carried out during at least one rolling break.
  • This is for example one off EP 2 111 309 B1 Known method used for rolling several aluminum plates.
  • rolling breaks can be used advantageously for processing further aluminum plates, so that the utilization of a rolling train can be optimized.
  • a further embodiment of the invention provides that a rolling force threshold value is predetermined as a function of at least one state variable of the aluminum plate, and that the pass schedule restricts the rolling force during rolling to the respective rolling force threshold depending on the values of the at least one state variable.
  • a thickness decrease threshold is set as a function of at least one state variable of the aluminum plate, and the stitch plan reduces the decrease in thickness of the aluminum plate during each roll pass depending on the values of the at least one state variable to the respective thickness decrease threshold.
  • a thickness of the aluminum plate is preferably used.
  • other geometric variables e.g. a curvature or profile of the aluminum plate, or thermodynamic variables, e.g. a temperature of the aluminum plate.
  • the material properties of the aluminum can be further improved and in particular an undesired grain growth in the aluminum plate can be counteracted.
  • a further embodiment of the invention provides that the aluminum plate is cooled by a cooling unit during at least one rolling break.
  • cooling units for cooling the aluminum plate is advantageous because aluminum plates are usually rolled at relatively low temperatures and therefore passive cooling of the aluminum plates would cost too much time.
  • a further embodiment of the invention provides that measured values of at least one measured variable associated with a temperature of the aluminum plate are continuously recorded and the values of the at least one state variable are determined on the basis of the detected measured values by means of a temperature model evaluating these measured values.
  • a temperature model evaluating these measured values.
  • Such methods for determining a current temperature of the aluminum plate using a temperature model are particularly advantageous because a sufficiently accurate direct measurement of a temperature of aluminum plates is usually difficult or too expensive and therefore the use of a model for temperature determination is useful.
  • a further embodiment of the invention provides that the stitch plan is continuously updated, for example, after each pass of the aluminum plate by a cooling unit.
  • Such an update advantageously makes it possible to intervene in the event of deviations from actual data from plan data and to adapt the pass schedule to the current conditions.
  • the figure shows a flow chart of a method performed by an automation system for reversely thermo-mechanical rolling of an aluminum plate to a Aluminum sheet in a rolling process with several rolling passes.
  • measured values 1 of at least one measured variable associated with a temperature of the aluminum plate are recorded.
  • Such measured variables are in particular temperatures at different locations of the aluminum plate and for the aluminum plate characteristic variables such as a microstructure.
  • a current temperature of the aluminum plate is determined on the basis of the detected measured values 1 by means of a temperature model 2 of the aluminum plate evaluating these measured values 1, as is apparent from FIG WO 2008/043684 is known.
  • characteristic data 4 are predetermined for the thermal guidance of the rolling process and stored in the automation system. These characteristics include, in particular, waiting thicknesses, re-rolling temperatures, a target temperature, a cooling temperature, and a cooling rate.
  • a pass schedule 5 for the rolling process is determined, which also includes actuators 6 required to achieve the characteristics 4.
  • actuators 6 include a cooling time in air cooling the aluminum plate, a number of rolling passes, a flow rate of the aluminum plate through a rolling stand and / or amounts of water of a cooling unit.
  • the aluminum plate is rolled during each rolling pass up to a respective rolling pass associated waiting thickness. Subsequently, the rolling of the aluminum plate is interrupted by a rolling break until it has cooled to a rolling break associated Wiederanwalztemperatur the following roll pass.
  • the aluminum plate can passively or actively cooled by means of a cooling unit become.
  • the waiting thicknesses and re-rolling temperatures depend on the material and the target geometry of the aluminum plate. These quantities are sometimes derivable from phase diagrams, for example in the case of aluminum plates of aluminum-copper or aluminum-magnesium alloys, but are generally determined empirically.
  • the re-rolling temperature of the last rolling pass is determined from the temperature model 2 such that the temperature of the aluminum plate after the last rolling step coincides with the target temperature.
  • the target temperature may e.g. be characterized by an average over the thickness of the aluminum plate temperature, a surface temperature or by an enthalpy.
  • the aluminum plate is fed to a cooling unit and cooled by means of the cooling unit at the cooling rate to the cooling temperature.
  • the stitch plan takes into account, in addition to the characteristic data 4 for the thermal guidance of the rolling process, also further characteristic data, e.g. a maximum rolling force acting on the aluminum plate and / or a maximum thickness decrease of the aluminum plate during the individual rolling passes.
  • the embodiment of the stitch plan is cyclically updated, for example after each pass of the aluminum plate by a cooling unit, based on the determined instantaneous temperature, in particular, the actuators 6 are updated for further cooling.
  • the target variables in particular a target thickness and the target temperature of the aluminum plate.
  • At least one further aluminum plate is pre-rolled during the cooling of the aluminum plate in a rolling break. That's what it's made of EP 2 111 309 B1 Known method used for staggered rolling multiple aluminum plates.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Winding Of Webs (AREA)
EP20120165758 2012-04-26 2012-04-26 Thermomechanisches Walzen einer Aluminiumplatte Withdrawn EP2656932A1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP20120165758 EP2656932A1 (de) 2012-04-26 2012-04-26 Thermomechanisches Walzen einer Aluminiumplatte
BR112014026380-9A BR112014026380B1 (pt) 2012-04-26 2013-04-17 método para laminação termomecânica reversível de uma placa de alumínio em um processo de laminação com uma pluralidade de passes de laminação
US14/397,084 US10131979B2 (en) 2012-04-26 2013-04-17 Thermomechanical rolling of an aluminum plate
PCT/EP2013/057960 WO2013160162A1 (de) 2012-04-26 2013-04-17 Thermomechanisches walzen einer aluminiumplatte
EP13719045.0A EP2828011B1 (de) 2012-04-26 2013-04-17 Thermomechanisches walzen einer aluminiumplatte
CN201380020354.6A CN104245166B (zh) 2012-04-26 2013-04-17 铝板的热机械轧制

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120165758 EP2656932A1 (de) 2012-04-26 2012-04-26 Thermomechanisches Walzen einer Aluminiumplatte

Publications (1)

Publication Number Publication Date
EP2656932A1 true EP2656932A1 (de) 2013-10-30

Family

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Family Applications (2)

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EP20120165758 Withdrawn EP2656932A1 (de) 2012-04-26 2012-04-26 Thermomechanisches Walzen einer Aluminiumplatte
EP13719045.0A Active EP2828011B1 (de) 2012-04-26 2013-04-17 Thermomechanisches walzen einer aluminiumplatte

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP13719045.0A Active EP2828011B1 (de) 2012-04-26 2013-04-17 Thermomechanisches walzen einer aluminiumplatte

Country Status (5)

Country Link
US (1) US10131979B2 (zh)
EP (2) EP2656932A1 (zh)
CN (1) CN104245166B (zh)
BR (1) BR112014026380B1 (zh)
WO (1) WO2013160162A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016012691A1 (fr) * 2014-07-23 2016-01-28 Constellium Neuf-Brisach Procédé et équipement de refroidissement
US10006724B2 (en) 2014-03-06 2018-06-26 Constellium Neuf-Brisach Multiply-clad brazing metal sheet
US10131979B2 (en) 2012-04-26 2018-11-20 Primetals Technologies Germany Gmbh Thermomechanical rolling of an aluminum plate
EP3215643B1 (de) * 2014-11-07 2021-04-07 SMS group GmbH Verfahren zum steuern und/oder regeln einer metallurgischen anlage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1958711A1 (en) * 2007-02-16 2008-08-20 Siemens VAI Metals Technologies Ltd. Method and apparatus for thermo-mechanical controlled rolling of metal plates and strips
EP2305392A1 (de) * 2009-10-05 2011-04-06 Siemens Aktiengesellschaft Verfahren zum Walzen von Walzgut und Walzstraße mit wenigstens einem Walzgerüst zum thermomechanischen Walzen von Walzgut

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877867A (en) * 1973-06-18 1975-04-15 Nippon Steel Corp Heating device set in the rolling mill
FR2529578B1 (fr) * 1982-07-02 1986-04-11 Cegedur Procede pour ameliorer a la fois la resistance a la fatigue et la tenacite des alliages d'al a haute resistance
JP3376195B2 (ja) * 1995-12-26 2003-02-10 川崎製鉄株式会社 板内均質性に優れかつ脆性亀裂伝播停止特性と溶接性を兼ね備えた高張力厚鋼板の製造方法
JPH10192950A (ja) * 1997-01-17 1998-07-28 Nkk Corp 厚鋼板の加工熱処理装置および厚鋼板の製造方法
DE19758108C1 (de) * 1997-12-17 1999-01-14 Mannesmann Ag Produktionsverfahren und -anlage zur endlosen Erzeugung von warmgewalzten dünnen Flachprodukten
CA2607497C (en) * 2005-05-25 2014-08-26 Pizhi Zhao Aluminum alloy sheet and method for manufacturing the same
DE102006047718A1 (de) 2006-10-09 2008-04-17 Siemens Ag Verfahren zur Nachverfolgung des physikalischen Zustands eines Warmblechs oder Warmbands im Rahmen der Steuerung einer Grobblechwalzstraße zur Bearbeitung eines Warmblechs oder Warmbands
CN101631630A (zh) * 2007-02-16 2010-01-20 西门子Vai金属科技有限公司 金属板和带的热机械控制轧制方法及装置
EP2656932A1 (de) 2012-04-26 2013-10-30 Siemens Aktiengesellschaft Thermomechanisches Walzen einer Aluminiumplatte

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1958711A1 (en) * 2007-02-16 2008-08-20 Siemens VAI Metals Technologies Ltd. Method and apparatus for thermo-mechanical controlled rolling of metal plates and strips
EP2305392A1 (de) * 2009-10-05 2011-04-06 Siemens Aktiengesellschaft Verfahren zum Walzen von Walzgut und Walzstraße mit wenigstens einem Walzgerüst zum thermomechanischen Walzen von Walzgut

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10131979B2 (en) 2012-04-26 2018-11-20 Primetals Technologies Germany Gmbh Thermomechanical rolling of an aluminum plate
US10006724B2 (en) 2014-03-06 2018-06-26 Constellium Neuf-Brisach Multiply-clad brazing metal sheet
WO2016012691A1 (fr) * 2014-07-23 2016-01-28 Constellium Neuf-Brisach Procédé et équipement de refroidissement
FR3024058A1 (fr) * 2014-07-23 2016-01-29 Constellium France Procede et equipement de refroidissement
EP3398696A1 (fr) * 2014-07-23 2018-11-07 Constellium Neuf Brisach Procédé et équipement de refroidissement
US10130980B2 (en) 2014-07-23 2018-11-20 Constellium Neuf-Brisach Cooling facility and method
RU2676272C2 (ru) * 2014-07-23 2018-12-27 Констеллиум Неф-Бризаш Способ и устройство охлаждения
EP3215643B1 (de) * 2014-11-07 2021-04-07 SMS group GmbH Verfahren zum steuern und/oder regeln einer metallurgischen anlage

Also Published As

Publication number Publication date
US20150122375A1 (en) 2015-05-07
BR112014026380A8 (pt) 2018-04-03
US10131979B2 (en) 2018-11-20
BR112014026380B1 (pt) 2019-11-19
BR112014026380A2 (pt) 2017-06-27
WO2013160162A1 (de) 2013-10-31
CN104245166B (zh) 2016-11-02
CN104245166A (zh) 2014-12-24
EP2828011A1 (de) 2015-01-28
EP2828011B1 (de) 2017-08-09

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