EP2828011A1 - Thermomechanisches walzen einer aluminiumplatte - Google Patents
Thermomechanisches walzen einer aluminiumplatteInfo
- Publication number
- EP2828011A1 EP2828011A1 EP13719045.0A EP13719045A EP2828011A1 EP 2828011 A1 EP2828011 A1 EP 2828011A1 EP 13719045 A EP13719045 A EP 13719045A EP 2828011 A1 EP2828011 A1 EP 2828011A1
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 118
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 104
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 230000000930 thermomechanical effect Effects 0.000 title claims description 9
- 239000004411 aluminium Substances 0.000 title abstract 4
- 238000001816 cooling Methods 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 1
- 230000002441 reversible effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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 the reversible thermomechanical rolling of an aluminum plate in a rolling process with several rolling passes.
- WO 2008/043684 discloses a method for tracking the physical state of a hot plate or strip as part of the control of a rolling train for reversibly machining a hot plate or strip.
- a starting ⁇ point an initial state of the hot plate or hot strip from which a physical state quantity can be derived at least as determined in a model, and the state is cyclically updated during the processing of the hot plate using the model, wherein a displacement monitoring of the hot sheet or Hot bands and the state influencing and / or reproducing operating parameters are taken into account.
- EP 2 111 309 B1 discloses a method for the thermomechanically controlled rolling of a batch of metal slabs into sheets or strips in a rolling mill with at least one rolling mill according to a rolling scheme which comprises at least two rolling phases and is applied to each slab of the batch.
- Currency ⁇ rend of rolling the batch at least one rolling mill stand it occurs several times that a different rolling phase followed by a rolling phase applied to one slab or plate or strip, which on another slab or plate or another tape This mill is applied. It is for two successively rolled slabs the time ⁇ span between the initial stages of their rolling phases always less than the sum of the durations of all rolling phases and all cooling phases of the rolling scheme.
- EP 1958711 Al discloses a method of thermo-mechanical controlled rolling of metal slabs, in which each metal slab during rolling at least two phases, which are interrupted by a cooling phase, rolled and several Me ⁇ tallbrammen are rolled simultaneously.
- EP 2 305 392 A1 discloses a process for rolling rolling, wherein the rolling process comprises a cooling phase between two hot rolling transformations. During the cooling phase, a temperature difference between a central region and an edge region of the rolling stock is counteracted by heating the edge region.
- the invention has for its object to provide an improved method for reversing thermomechanical rolling an aluminum plate.
- characteristic data for the thermal management of the rolling process are specified and there are continuously values of at least one state variable from which a Tem ⁇ temperature of the aluminum plate is derivable, is determined.
- Ab ⁇ dependence of the determined values of the at least one state variable and the characteristics of a pass schedule for the rolling process is determined, which provides a rolling pause aufeinan between at least two ⁇ the following rolling passes during which the rollers of the aluminum plate is interrupted at its cooling.
- the characteristics associate at least one rolling pass with a waiting thickness of the aluminum plate, and the pass plan provides for the beginning of a rolling break as soon as the Thickness of the aluminum plate in the rolling pass reaches him fed ⁇ ordered waiting thickness or below.
- An aluminum plate is understood in this application to mean a plate which consists of aluminum or an aluminum alloy.
- a temperature averaged over a thickness of the aluminum plate or a surface temperature or a residual solidification or phase portions or grain sizes or an enthalpy of the aluminum plate it is preferable to determine a temperature averaged over a thickness of the aluminum plate or a surface temperature or a residual solidification or phase portions 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 with ⁇ cooled.
- the rolling temperature be ⁇ can purportedly material properties of aluminum plates WE sentlich affected.
- the temperature of the aluminum plate can be controlled during the rolling process so that the rolling subsequent known from the prior art post-processing steps for thermal Erzeu ⁇ supply certain mechanical properties of the material of the aluminum plate are unnecessary.
- Such manufacturing steps are ⁇ example, solution heat treating, quenching or curing the aluminum.
- the insertion of rolling breaks is coupled to the achievement of predetermined thicknesses of the aluminum plate.
- a stepped rolling of the aluminum plate can advantageously be achieved, in which the rolling to cool the aluminum is interrupted by rolling breaks as a function of temperature and thickness of the aluminum plate.
- a preferred embodiment of the invention provides that the characteristics of at least one rolling break assign a re-rolling temperature of the aluminum plate, and that the stitching plan to end this rolling break provides as soon as the Tempe ⁇ temperature of the aluminum plate reaches the Bachanwalztemperatur. In this way it is achieved that the aluminum plate currency ⁇ rend a rolling pause cooled to a defined temperature, namely its associated 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 characteristics include a target temperature, and that the stitch plan a duration of a rolling break or a Wiederanwalztempe- rature of the aluminum plate after a rolling break ⁇ be such that the temperature of the aluminum plate after the last pass with the target temperature matches.
- a target temperature of the aluminum plate can also be achieved in the last pass. This makes it possible to set advantageous Materialei ⁇ properties of aluminum already at the end of the rolling process without consuming post. In addition, can be counteracted by the target temperature at a suitable stitching strategy unwanted grain growth in the aluminum plate, which can adjust in conventional processes in a rolling process following the heat treatment.
- 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. This advantageously allows to further improve the material properties of the aluminum after the rolling process by a controlled rate from ⁇ cooling.
- 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. For this purpose, for example, from EP 2 111 309 Bl known method for rolling multiple aluminum plates is used.
- a further embodiment of the invention provides that a rolling force threshold value of a state variable of the aluminum plate is set as a function at least, and that the pass schedule that limits the rolling force during rolling in Depending ⁇ speed of the values of at least one state variable to the respective roll force threshold.
- a thickness degradation threshold value is set as a radio ⁇ tion of at least one state variable of the aluminum plate and through the pass schedule, the decrease in thickness of the aluminum plate during each reduction pass, the restricted in dependence on the values of at least one state variable to the respective thickness value of decrease threshold.
- a thickness of the aluminum plate is preferably used.
- other geometric VARIAB ⁇ len such as a curve or a profile of aluminum plate or thermodynamic variables, such as a temperature of the aluminum plate can be used as state variable.
- 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. The use of 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 continuously measured values of at least one are detected with a temperature of the aluminum ⁇ miniumplatte related measured variable and the values of evaluating temperature model to determine the at least one state variable on the basis of measured values acquired by means of these measured values.
- a mo ⁇ mentanen temperature of the aluminum plate is particularly suitable from WO 2008/043684 a known method for tracking the physical state of the aluminum plate.
- Such methods for determining a current temperature of the aluminum plate by means of a temperature model are particularly advantageous because a sufficiently ge ⁇ accurate direct measurement of a temperature of aluminum plates is usually difficult or too expensive and therefore He ⁇ ranziehung 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.
- the figure shows a flow chart of a process performed by a car ⁇ mattechnischssystems method for reversie- leaders thermomechanical rolling of an aluminum plate to an aluminum plate in a rolling process with a plurality of rolling passes.
- the measured values are 1 detects at least one egg with ⁇ ner temperature of the aluminum plate related measured variable.
- Such measurements are particularly tempera ⁇ ren at different locations of the aluminum plate and the aluminum plate as a structural characteristic quantities ⁇ structure.
- 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 the aluminum plate through a rolling mill and / or amounts of water of a cooling unit.
- the aluminum plate is rolled during each rolling pass up to a waiting thickness assigned to the respective rolling pass. 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 umplatte passively or actively pick ⁇ be cooled by a cooling unit.
- the waiting thicknesses and re-rolling temperatures depend on the material and the target geometry of the aluminum plate. These quantities can sometimes be derived from phase diagrams, for example in the case of aluminum plates made of aluminum-copper or aluminum-magnesium alloys, but are generally determined empirically.
- the re-rolling temperature of the last rolling pass is determined on the basis of 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. by a temperature averaged over the thickness of the aluminum plate, a surface temperature or by a
- Enthalpy can be characterized.
- 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.
- other characteristics such as a ma ⁇ ximum acting on the aluminum plate rolling force and / or a maximum thickness decrease of the aluminum plate during the individual rolling passes.
- the pass schedule is cyclical, For example, after each passage of the aluminum plate through a cooling unit, updated on the basis of the determined instantaneous temperature, in particular, the actuators 6 are updated for further cooling.
- the plan data can be taken from the plan data repeatedly correcting such a deviation of the actual data in order to achieve the targets (in particular a target thickness and the target temperature of the Alumini ⁇ umplatte).
- at least one further aluminum plate is pre-rolled during the cooling of the aluminum plate in a rolling break.
- the method known from EP 2 111 309 B1 is used for the staggered rolling of a plurality of aluminum plates.
Landscapes
- 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)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13719045.0A EP2828011B1 (de) | 2012-04-26 | 2013-04-17 | Thermomechanisches walzen einer aluminiumplatte |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20120165758 EP2656932A1 (de) | 2012-04-26 | 2012-04-26 | Thermomechanisches Walzen einer Aluminiumplatte |
EP13719045.0A EP2828011B1 (de) | 2012-04-26 | 2013-04-17 | Thermomechanisches walzen einer aluminiumplatte |
PCT/EP2013/057960 WO2013160162A1 (de) | 2012-04-26 | 2013-04-17 | Thermomechanisches walzen einer aluminiumplatte |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2828011A1 true EP2828011A1 (de) | 2015-01-28 |
EP2828011B1 EP2828011B1 (de) | 2017-08-09 |
Family
ID=48190925
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20120165758 Withdrawn EP2656932A1 (de) | 2012-04-26 | 2012-04-26 | Thermomechanisches Walzen einer Aluminiumplatte |
Country Status (5)
Country | Link |
---|---|
US (1) | US10131979B2 (de) |
EP (2) | EP2656932A1 (de) |
CN (1) | CN104245166B (de) |
BR (1) | BR112014026380B1 (de) |
WO (1) | WO2013160162A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2656932A1 (de) | 2012-04-26 | 2013-10-30 | Siemens Aktiengesellschaft | Thermomechanisches Walzen einer Aluminiumplatte |
FR3018213B1 (fr) | 2014-03-06 | 2016-10-21 | Constellium France | Tole de brasage a placages multiples |
FR3024058B1 (fr) * | 2014-07-23 | 2016-07-15 | Constellium France | Procede et equipement de refroidissement |
DE102014222827A1 (de) * | 2014-11-07 | 2016-05-12 | Sms Group Gmbh | Verfahren zum Steuern und/oder Regeln einer metallurgischen Anlage |
Family Cites Families (11)
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 |
CN100532603C (zh) * | 2005-05-25 | 2009-08-26 | 日本轻金属株式会社 | 铝合金薄板及其制造方法 |
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 |
EP1958711A1 (de) * | 2007-02-16 | 2008-08-20 | Siemens VAI Metals Technologies Ltd. | Verfahren und Vorrichtung für thermomechanisch gesteuertes Walzen von Metallplatten und Metallstreifen |
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 |
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 |
EP2656932A1 (de) | 2012-04-26 | 2013-10-30 | Siemens Aktiengesellschaft | Thermomechanisches Walzen einer Aluminiumplatte |
-
2012
- 2012-04-26 EP EP20120165758 patent/EP2656932A1/de not_active Withdrawn
-
2013
- 2013-04-17 EP EP13719045.0A patent/EP2828011B1/de active Active
- 2013-04-17 CN CN201380020354.6A patent/CN104245166B/zh active Active
- 2013-04-17 BR BR112014026380-9A patent/BR112014026380B1/pt active IP Right Grant
- 2013-04-17 US US14/397,084 patent/US10131979B2/en active Active
- 2013-04-17 WO PCT/EP2013/057960 patent/WO2013160162A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2013160162A1 * |
Also Published As
Publication number | Publication date |
---|---|
BR112014026380B1 (pt) | 2019-11-19 |
CN104245166B (zh) | 2016-11-02 |
BR112014026380A2 (pt) | 2017-06-27 |
EP2656932A1 (de) | 2013-10-30 |
US10131979B2 (en) | 2018-11-20 |
CN104245166A (zh) | 2014-12-24 |
US20150122375A1 (en) | 2015-05-07 |
EP2828011B1 (de) | 2017-08-09 |
BR112014026380A8 (pt) | 2018-04-03 |
WO2013160162A1 (de) | 2013-10-31 |
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