WO1998018970A1 - Verfahren zur überwachung und steuerung der qualität von walzprodukten aus warmwalzprozessen - Google Patents
Verfahren zur überwachung und steuerung der qualität von walzprodukten aus warmwalzprozessen Download PDFInfo
- Publication number
- WO1998018970A1 WO1998018970A1 PCT/AT1997/000232 AT9700232W WO9818970A1 WO 1998018970 A1 WO1998018970 A1 WO 1998018970A1 AT 9700232 W AT9700232 W AT 9700232W WO 9818970 A1 WO9818970 A1 WO 9818970A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metallurgical
- properties
- physical
- rolled
- temperature
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000012544 monitoring process Methods 0.000 title claims description 4
- 239000000463 material Substances 0.000 claims abstract description 49
- 239000000047 product Substances 0.000 claims abstract description 40
- 238000005096 rolling process Methods 0.000 claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
- 238000013179 statistical model Methods 0.000 claims abstract description 13
- 238000005098 hot rolling Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 24
- 238000001556 precipitation Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000004458 analytical method Methods 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 12
- 229910001566 austenite Inorganic materials 0.000 claims description 11
- 238000001953 recrystallisation Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000029142 excretion Effects 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 6
- 229910000859 α-Fe Inorganic materials 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 5
- 229910001562 pearlite Inorganic materials 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- 241000446313 Lamella Species 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 229910001563 bainite Inorganic materials 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims description 2
- 238000012937 correction Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 claims description 2
- 238000012417 linear regression Methods 0.000 claims description 2
- 229910000734 martensite Inorganic materials 0.000 claims description 2
- 238000005204 segregation Methods 0.000 claims description 2
- 239000007858 starting material Substances 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 239000004557 technical material Substances 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011158 quantitative evaluation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
- G05B17/02—Systems involving the use of models or simulators of said systems electric
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
Definitions
- the invention relates to a method for monitoring and controlling the quality of rolled products from hot rolling processes, in which rolled products such as sheets, strips, profiles, bars, wire, etc. are produced from a starting material such as slabs, thin slabs, blooms, billets, etc.
- the primary material solidified in the mold has a rather coarse primary structure, the individual crystals have grown as stem crystals, dendrites, from the walls inwards.
- the structure must be refined to achieve sufficient toughness. The most effective way to do this is to mechanically break open the structure during rolling.
- the hot forming must be carried out essentially above the upper transformation line in the iron-carbon diagram, depending on the composition of the steel in the range from 1100 to 850 ° C, the upper temperature range mainly used for deformation, the lower one for refining the structure.
- the object of the invention is to provide a method with which the expected material properties of the end product can be calculated in advance at each generation stage of the hot rolling process.
- the above object is achieved by the invention, which is characterized in that production conditions such as temperatures, pass decreases, etc. are recorded online in the entire rolling process, and that the physical, metallurgical and / or statistical models which are interlinked and describe the entire rolling process are used to determine the expected results mechanical / technological material properties, in particular the yield strength, tensile strength and elongation at break, of the rolled product are calculated in advance.
- the expected material properties can only be calculated in advance by online recording of the actual and current production conditions.
- a further advantage is that the physical / metallurgical and / or statistical models describing the entire rolling process optimize the chemical target analysis of the primary material and the production conditions, which are the time-temperature profiles or time-temperature deformation profiles in the individual production stages and these are determined for new related product qualities. This makes it possible to determine suitable production conditions for such related product qualities without long series of tests.
- each primary material is identified and the characteristic properties, such as chemical analysis, the dimension, the precipitation state resulting from the preceding temperature profile, such as size, quantity, type, distribution of precipitates such as AIN, TiN, TiC , TiNbCN, VC, etc., the degree of segregation present, etc.
- characteristic properties such as chemical analysis, the dimension, the precipitation state resulting from the preceding temperature profile, such as size, quantity, type, distribution of precipitates such as AIN, TiN, TiC , TiNbCN, VC, etc., the degree of segregation present, etc.
- a physical / metallurgical austenitization and excretion model which uses the time-temperature curve to heat the primary material to the rolling temperature to obtain the characteristic material properties such as austenite grain size and precipitation state, in particular resolution of precipitates, calculated, and then added the physical properties after heating, in particular temperature, dimension, austenite size and precipitation state, to a physical / metallurgical deformation, recrystallization, transformation and precipitation model It is heard which calculates the characteristic properties, in particular austenite size, temperature distribution, precipitation state, degree of recrystallization, etc., from the time-temperature deformation sequence during the rolling process, and that these material properties are based on a physical / metallurgical cooling, conversion, precipitation and aging model are forwarded, which results from the cooling process for the rolled product in a cooling device provided for this purpose and in the subsequent free, informal one remaining cooling and aging of the rolled stock in the wound, stacked, bundled, etc.
- the characteristic properties of the rolled product, in particular the microstructure including the proportions of the structural components such as austenite, ferrite, pearlite, bainite, martensite and their properties such as ferrite grain size, pearlite lamella spacing, etc. and the Precipitation state is calculated, and that the properties that describe the finished rolled product for further use, such as dimensions, chemical analysis, microstructure and precipitation state, etc., are passed on to a physical / metallurgical material model, which takes the mechanical / technological material properties of the rolled product into account, taking into account any cold deformations, e.g. stretch bending , determined.
- a physical / metallurgical material model which takes the mechanical / technological material properties of the rolled product into account, taking into account any cold deformations, e.g. stretch bending , determined.
- a further development of the method consists in the fact that when deviations occur in the characteristic data of the primary material, the heating process, the rolling process and the cooling process, online and with the physical / metallurgical austenitization, deformation, recrystallization, conversion, precipitation, Cooling and material models calculate the changes in the time-temperature curve for heating, the time-temperature deformation curve during rolling, the time-temperature curve during cooling necessary to comply with the required mechanical / technological material properties and to the control systems of the heating, rolling and Cooling system are transmitted. This ensures compliance with the required mechanical / technological material properties of the rolled product within the scope of the remaining options.
- a further embodiment of the method is that using the method of linear regression, the statistical models are created with the data from samples of rolled products and the associated raw material properties and production conditions and are continuously improved and updated with further data from samples of rolled products and the associated raw material properties and production conditions these are adjusted.
- the data of rolled products and their raw material properties and production conditions are used to adapt and compare the physical / metallurgical models. This ensures that the models are always very close to the actual states.
- the physical / metallurgical and statistical models for the pre-calculation of the mechanical / technological properties of a rolled product and the online correction of the production conditions are implemented on a process computer.
- Another advantage is that adaptation, comparison and improvement of the physical / metallurgical and statistical models for the pre-calculation of the mechanical / technological properties of a rolled product are realized on a process computer.
- Another advantage is that the physical / metallurgical and statistical models for optimizing and determining suitable production conditions for achieving the mechanical / technological properties of a rolled product are realized on a process computer.
- the method according to the invention is explained in more detail with reference to the FIG., In which the individual models are shown schematically as partial models.
- the development of the microstructure during the heating of the primary material is simulated, with the values of the chemical analysis, for example% C,% Mn, the temperature T, the thickness or dimensions h and the excretion state p of the primary material are supplied to this partial model 1.
- the heating time t and the respective instantaneous temperature T during the heating also reach the partial model 1.
- the calculated required time ⁇ t and temperature changes ⁇ T for the required material properties are output by the partial model 1 to the control for the heating device.
- partial model 2 From partial model 1 to partial model 2, in which the deformation of the primary material on the rolled product is simulated, the values of the chemical analysis% C,% Mn, etc., the calculated temperature T of the primary material, calculated thickness h or dimension of the primary material , the calculated excretion state p and the calculated austenite size d ⁇ .
- the sub-model 2 contains the forming model D, the conversion model U, the recrystallization model R and the precipitation model P, which are connected to one another. This sub-model 2 receives the time t or the rolling speed, the temperature T present at these and the deformation ⁇ of the rolling stock from the individual rolling stands.
- the four models D, P, R, U calculate the rolling stock temperature T, the rolling stock dimensions h, the austenite grain size d ⁇ , the excretion state p, the structural components x f , x p , etc. and the remanent deformation ⁇ rem , which together with the values of the chemical analysis% C,% Mn, etc. are passed on to partial model 3, which simulates the cooling phase of the rolled product.
- Submodel 2 also gives the time ⁇ t, temperature ⁇ T and deformation changes ⁇ for the required Material properties to the controls of the rolling stands.
- the sub-model 3 contains the conversion model U, the elimination model P, the cooling model C and the aging model V, which are also all linked to one another.
- the actual values of the cooling time t, the coolant quantities w and the corresponding associated temperatures T are also transferred to the partial model 3 and the calculated required time ⁇ t, coolant quantities ⁇ w and temperature changes ⁇ T for the required material properties are transferred from this partial model 3 to the control of the Cooling device issued.
- the rolling stock temperature T, the rolling stock dimensions h, the austenite grain size d ⁇ , the precipitation state p, the structural components x f , x p , the ferrite grain size d ⁇ and the pearlite lamella spacing ⁇ p are calculated and together with the values of the chemical analysis% C, % Mn, etc. fed to the material model M, which also receives the degree of stretch S.
- the material model M calculates the yield strength R p0 , 2 , the tensile strength R m and the elongation at break A x from the quantities supplied. These are compared with the equivalent quantities R p0 , 2 , R m , A x for the required material properties at 4 and the differences ⁇ R p0.2 , ⁇ R m , ⁇ A X are fed to partial models 1 to 3 and material model M.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Metal Rolling (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97911042A EP0946764A1 (de) | 1996-10-30 | 1997-10-29 | Verfahren zur überwachung und steuerung der qualität von walzprodukten aus warmwalzprozessen |
CA002270450A CA2270450A1 (en) | 1996-10-30 | 1997-10-29 | Process for monitoring and controlling the quality of rolled products from hot-rolled processes |
US09/302,577 US6430461B1 (en) | 1996-10-30 | 1999-04-30 | Process for monitoring and controlling the quality of rolled products from hot-rolling processes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA1896/96 | 1996-10-30 | ||
AT0189696A AT408623B (de) | 1996-10-30 | 1996-10-30 | Verfahren zur überwachung und steuerung der qualität von walzprodukten aus warmwalzprozessen |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/302,577 Continuation-In-Part US6430461B1 (en) | 1996-10-30 | 1999-04-30 | Process for monitoring and controlling the quality of rolled products from hot-rolling processes |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998018970A1 true WO1998018970A1 (de) | 1998-05-07 |
Family
ID=3523367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT1997/000232 WO1998018970A1 (de) | 1996-10-30 | 1997-10-29 | Verfahren zur überwachung und steuerung der qualität von walzprodukten aus warmwalzprozessen |
Country Status (5)
Country | Link |
---|---|
US (1) | US6430461B1 (de) |
EP (1) | EP0946764A1 (de) |
AT (1) | AT408623B (de) |
CA (1) | CA2270450A1 (de) |
WO (1) | WO1998018970A1 (de) |
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WO1999024182A1 (de) * | 1997-11-10 | 1999-05-20 | Siemens Aktiengesellschaft | Verfahren und einrichtung zur steuerung einer hüttentechnischen anlage |
WO2002003304A2 (en) * | 2000-06-30 | 2002-01-10 | Tct International Plc | Predicting changes in characteristics of an object |
WO2003065134A1 (de) * | 2002-01-31 | 2003-08-07 | Siemens Aktiengesellschaft | Verfahren zur regelung eines industriellen prozesses |
WO2004050923A1 (de) * | 2002-12-05 | 2004-06-17 | Sms Demag Aktiengesellschaft | Verfahren zur proozesssteuerung oder prozessregelung einer anlage zur umformung, kühllung und/oder wärmebehandlung von metall |
AT413609B (de) * | 2001-05-10 | 2006-04-15 | Voest Alpine Ind Anlagen | Verfahren und vorrichtung zur produktionsstufenübergreifenden verknüpfung von daten |
WO2008043684A1 (de) * | 2006-10-09 | 2008-04-17 | Siemens Aktiengesellschaft | Verfahren zur nachverfolgung des physikalischen zustands eines warmblechs oder warmbands im rahmen der steuerung einer grobblechwalzstrasse zur bearbeitung eines warmblechs oder warmbands |
CN1641356B (zh) * | 2004-12-13 | 2010-05-26 | 武汉科技大学 | 硬线产品显微组织与力学性能预报*** |
CN103752621A (zh) * | 2014-01-09 | 2014-04-30 | 鞍钢股份有限公司 | 一种热轧线紧急改规格物料自动互换转用的方法 |
DE102014224461A1 (de) | 2014-01-22 | 2015-07-23 | Sms Siemag Ag | Verfahren zur optimierten Herstellung von metallischen Stahl- und Eisenlegierungen in Warmwalz- und Grobblechwerken mittels eines Gefügesimulators, -monitors und/oder -modells |
WO2017157692A1 (de) * | 2016-03-14 | 2017-09-21 | Sms Group Gmbh | Verfahren zum walzen und/oder zur wärmebehandlung eines metallischen bandes |
WO2020049515A1 (en) * | 2018-09-06 | 2020-03-12 | Arcelormittal | Method and electronic device for monitoring a manufacturing of a metal product, related computer program and installation |
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WO2020224983A1 (de) * | 2019-05-07 | 2020-11-12 | Sms Group Gmbh | Verfahren zur wärmebehandlung eines metallischen produkts |
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FR2783444B1 (fr) * | 1998-09-21 | 2000-12-15 | Kvaerner Metals Clecim | Procede de laminage d'un produit metallique |
DE19930173A1 (de) * | 1999-06-30 | 2001-01-04 | Parsytec Comp Gmbh | Verfahren und Vorrichtung zur prozeßoptimierenden Einstellung von Parametern eines Produktionsprozesses |
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DE10106584A1 (de) * | 2001-02-13 | 2002-09-19 | Siemens Ag | Verfahren und Vorrichtung zur Voreinstellung von Prozessgrößen einer Walzstraße zum Walzen von Metallbändern |
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US6948347B2 (en) * | 2003-01-24 | 2005-09-27 | Isg Technologies Inc. | Graphical rolled steel sheet flatness display and method of using same |
WO2004076085A2 (de) * | 2003-02-25 | 2004-09-10 | Siemens Aktiengesellschaft | Verfahren zur regelung der temperatur eines metallbandes, insbesondere in einer kühlstrecke |
JP2006518670A (ja) * | 2003-02-25 | 2006-08-17 | シーメンス アクチエンゲゼルシヤフト | 金属帯の、特に加熱金属帯を圧延するための仕上げ圧延部における温度を調節するための方法 |
CN1780703A (zh) | 2003-03-28 | 2006-05-31 | 达塔钢铁有限公司 | 一种带钢热轧机中对热轧带卷的在线性质预测的***和方法 |
DE10339766A1 (de) * | 2003-08-27 | 2005-04-07 | Siemens Ag | Verfahren und Einrichtung zur Steuerung einer Anlage zur Herstellung von Stahl |
WO2008000845A1 (es) * | 2006-06-19 | 2008-01-03 | Fundacion Labein | Método y sistema de optimización de procesos de laminación de acero |
JP5391205B2 (ja) * | 2008-11-19 | 2014-01-15 | 東芝三菱電機産業システム株式会社 | 制御装置 |
US10130985B2 (en) * | 2012-01-30 | 2018-11-20 | Fatigue Technology, Inc. | Smart installation/processing systems, components, and methods of operating the same |
AT514380B1 (de) | 2013-05-03 | 2015-04-15 | Siemens Vai Metals Tech Gmbh | Bestimmung des ferritischen Phasenanteils nach dem Erwärmen oder Abkühlen eines Stahlbands |
AT513750B1 (de) * | 2013-05-03 | 2014-07-15 | Siemens Vai Metals Tech Gmbh | Bestimmung der ferritischen Phasenanteile beim Abkühlen eines Stahlbands |
WO2014185810A1 (en) * | 2013-05-13 | 2014-11-20 | Siemens Aktiengesellschaft | Method for adjusting final steel properties at steel mill facility |
CN112024613B (zh) * | 2020-07-31 | 2022-04-26 | 马鞍山钢铁股份有限公司 | 一种可视化、智能化的钢卷热轧温度判定***及判定方法 |
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CN115074497B (zh) * | 2022-07-08 | 2024-01-16 | 连云港兴鑫钢铁有限公司 | 一种热轧带肋钢筋轧后仿真退火的方法 |
WO2024115956A1 (en) * | 2022-12-02 | 2024-06-06 | Arcelormittal | Microstructure simulation during hot rolling |
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DD264942A1 (de) * | 1987-11-17 | 1989-02-15 | Bandstahlkombinat H Matern Veb | Verfahren zur herstellung von stahlerzeugnissen durch warmumformen |
DE3925047A1 (de) * | 1989-07-28 | 1991-01-31 | Paul Dr Ing Braisch | Verfahren zur werkstoffabhaengigen steuerung von waermebehandlungsprozessen von metallen und vorrichtung zur durchfuehrung des verfahrens |
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KR960012336B1 (ko) | 1991-06-04 | 1996-09-18 | 니뽄 스틸 코포레이션 | 강재의 재질 예측방법 |
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-
1996
- 1996-10-30 AT AT0189696A patent/AT408623B/de not_active IP Right Cessation
-
1997
- 1997-10-29 EP EP97911042A patent/EP0946764A1/de not_active Ceased
- 1997-10-29 CA CA002270450A patent/CA2270450A1/en not_active Abandoned
- 1997-10-29 WO PCT/AT1997/000232 patent/WO1998018970A1/de not_active Application Discontinuation
-
1999
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Also Published As
Publication number | Publication date |
---|---|
AT408623B (de) | 2002-01-25 |
US6430461B1 (en) | 2002-08-06 |
ATA189696A (de) | 2001-06-15 |
CA2270450A1 (en) | 1998-05-07 |
EP0946764A1 (de) | 1999-10-06 |
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