EP4146414A1 - VERFAHREN ZUM STEUERN ODER REGELN DER TEMPERATUR EINES STAHLBANDES BEI DER WARMUMFORMUNG IN EINER WARMBANDSTRAßE - Google Patents
VERFAHREN ZUM STEUERN ODER REGELN DER TEMPERATUR EINES STAHLBANDES BEI DER WARMUMFORMUNG IN EINER WARMBANDSTRAßEInfo
- Publication number
- EP4146414A1 EP4146414A1 EP21716283.3A EP21716283A EP4146414A1 EP 4146414 A1 EP4146414 A1 EP 4146414A1 EP 21716283 A EP21716283 A EP 21716283A EP 4146414 A1 EP4146414 A1 EP 4146414A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- setpoint
- process model
- hot strip
- hot
- 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
Classifications
-
- 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for drawing, e.g. for deep-drawing
- C21D8/0421—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for drawing, e.g. for deep-drawing characterised by the working steps
- C21D8/0426—Hot rolling
-
- 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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- 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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
Definitions
- the invention relates to a method for controlling or regulating the temperature of a steel strip during hot forming in a hot strip mill.
- the hot forming of a steel strip usually takes place in a hot strip mill.
- This consists of different individual units such as B. furnaces, rolling stands, drives, unwinding and winding devices for the steel strip or cooling lines.
- a large number of different devices or methods are known for controlling or regulating such units. These controls or regulation are essentially based on a target / actual value comparison and a derivation of appropriate corrective measures for maintaining the target value.
- the setpoints to be adhered to are defined on the basis of experience and / or previous process analyzes.
- a connection is usually established in advance between the product properties of the steel strip and the setpoint values to be set for the unit. During the production of the steel strip, there is usually a complex relationship between the most varied of setpoints and the desired product properties.
- unit-related process models are used to develop suitable setpoints that lead to the desired product properties.
- the complexity of the interrelationship and / or effort for example statistical models, analytical models or neural networks are used for these unit-related process models.
- a disadvantage of such control concepts for hot strip mills having multiple units is that interactions when changing target values or actual values are not mapped across the various units by the unit-related process models and / or controls or regulations of the units. Particularly in the production of steel strips with high demands on the material quality, it is difficult to optimize the complex interaction of time, temperature, structure development and these quasi-static individual unit controls.
- control or regulation of individual units of a hot strip mill is disadvantageous in that an optimization of the process control of the individual unit does not always necessarily lead to the optimization of the entire production process.
- energy and manufacturing costs can be saved through more dynamic process control.
- the object of the invention is to further develop the known open-loop or closed-loop control of a hot strip mill in such a way that the setpoint specifications for the individual units are optimized across all systems with regard to, for example, product properties of a steel strip.
- a higher-level process model stores and / or exchanges target and / or actual values, including times, speeds, temperatures, cooling rates and / or heating rates, online with at least two controls or regulators of the units.
- the higher-level process model determines on the basis of the exchanged setpoints and / or actual values and / or stored values and with the help of subordinate process models, such as a temperature model of the furnace, temperature model of the cooling section or a model of the forming in the hot strip mill, the temperature of the steel strip for at least one point before the coiling of the hot strip online.
- the higher-level process model determines new target value specifications of the units at this point, transfers the target value specifications to the control or regulation of the unit in order to maintain the target value specifications for the temperature of the steel strip.
- the new target value specifications are determined with the aid of an optimization algorithm that includes at least one subordinate process model.
- the higher-level process model maps a current production status of the steel strip on the basis of the setpoint and / or actual values of the units.
- suitable process models such as B. Energy and material balances for one
- the higher-level process model determines the development of a temperature profile before, for example, reeling into the future. In this way, a difference between the setpoint specification for this individual unit and a possible deviation can be recognized at an early stage.
- An optimization algorithm running in the superordinate optimization model can optimize target value specifications in such a way that the target value specification of the hot strip is undershot before it is reeled
- optimization goals specified in advance can be, for example, production goals, in particular energy quantities, production quantities or quality goals.
- the intermediate product is a slab with a thickness d ß ⁇ 1 mm to d ß ⁇ 300 mm, preferably d ß > 50 mm to d B ⁇ 160 mm from a casting machine and that
- the higher-level process model has a casting speed, preferably between V G - 4 m / min and V G ⁇ 6 m / min, more preferably V G ⁇ 5 m / min and V G ⁇ 6 m / min and a casting machine outlet temperature, preferably TGE ⁇ 800 ° C , the slab taken into account when determining the target specifications.
- the optimization target includes the energy consumption, the production quantity, the process reliability, product properties, production costs and / or the system wear, these targets, the preferred reference variables in the steel production area.
- a subordinate process model determines the structural development of the steel strip in the hot strip mill for at least one point, preferably before the hot strip is coiled.
- the resulting structure development is decisive for the further material properties and / or processing of the steel strip. The more precise control or regulation of the structure development in the course of the process makes it possible to react early to deviations and the reject quantities and / or
- a roughing stand and a finishing stand are used, according to claim 5.
- advantageous temperature distributions and sequences can be set and these can also be better mapped through a larger number of measurement and control points. This enables the higher-level process model to react better to deviations. Furthermore, this gives more options for intervening in the setpoint specifications for hot rolling.
- a temperature target value of TFS ⁇ 850 ° C to TFS ⁇ 1050 ° C preferably TFS ⁇ 900 ° C to TFS ⁇ 1000 ° C, even more preferably TFS ⁇ 900 ° C to TFS ⁇ 950 ° C is specified by the higher-level process model.
- TFE ⁇ 800 ° C to TFE ⁇ 850 ° C is specified by the higher-level process model.
- a target speed value of V F ⁇ 0.4 m / s to V F ⁇ 1 m / s is preferably specified by the higher-level process model.
- a temperature setpoint of Tvs ⁇ 1000 ° C to Tvs ⁇ 1150 ° C is specified by the higher-level process model for the setpoint of the inlet temperature in the roughing stand.
- the setpoint for the outlet temperature from the roughing stand is specified by the higher-level process model in a temperature range from TVE ⁇ 950 ° C to TVE ⁇ 1100 ° C.
- a target value of Ü FS ⁇ 20 mm to Ü FS ⁇ 70 mm is specified by the higher-level process model.
- the nominal value of the flask temperature is preferably specified by the process model in the range from TH ⁇ 30 ° C to TVE ⁇ 750 ° C, more preferably TH ⁇ 450 ° C to TH ⁇ 550 ° C.
- the alloying element C has a content of 0.03% by weight to 0.15% by weight and / or manganese has a content of 0.50% by weight to 2.00 %
- the optimized target value specifications for the production of a subsequent hot strip are the same Production goals, especially mechanical property are used.
- a higher-level process model, setpoint and / or actual values comprising times, speeds, temperature, cooling rates and / or heating rates, with at least two controls or regulators of the units, is preferably exchanged online - and / or storable.
- the higher-level process model determines the temperature of the steel strip online for at least one point before the hot strip is wound up on the basis of the exchanged setpoint and / or actual values and / or stored values and with the help of subordinate process models and determines the temperature of the predefined temperature deviations from a setpoint specification at this point new setpoint specifications of the respective aggregates.
- the new setpoint specifications are transferred from the higher-level process model to the control or regulation of the respective unit in order to maintain the setpoint specification for the temperature of the steel strip.
- the new target value specifications are determined with the aid of an optimization algorithm that includes at least one subordinate process model.
- Figure 1 System diagram for the hot strip mill
- FIG. 1 shows a possible system scheme of a hot strip mill for the production of a hot strip in which the method according to the invention is used.
- the hot strip mill consists of a casting plant 1, two shears 2, 10, two furnaces 3, 6, two roughing stands 4, a transfer bar cooling 5, an inductive heating system 7, three finishing stands 8, a cooling section 9 and a flasher 11 for winding the hot strip.
- a higher-level data processing system 12 has an integrated temperature and structure model. Setpoint and actual values are exchanged with the different systems or assigned regulations, controls and / or measuring devices and are stored, for example, in the form of a database.
- FIG. 2 shows a flow chart with an exemplary networking of two units or controls of the two units with the respective process models.
- the higher-level data processing system I transfers setpoint values to the higher-level process model II of the hot strip mill. From these setpoint values, for example a strength, the superordinate process model II determines a number of setpoint values or setpoint ranges, for example a temperature profile with min. And max.temperature, which are transferred to the subordinate process models lila, b.
- the subordinate process models III a, b derive specific setpoint values for the respective unit from this. For example, a setpoint for a burner control in an oven 3 or a setpoint for controlling the amount of water in a cooling section 9 is derived from a predefined temperature curve with assigned times.
- the subordinate process model III a, b can adjust the target value.
- An automatic optimization of the process model III a, b can also take place here by means of a self-learning algorithm. If the target actual value deviates from the target value specification V of the superordinate process model II, the setpoint values are recalculated on the superordinate level II and, if necessary, adjusted.
- FIG. 3 shows a diagram with a target temperature curve B and a measured and pre-calculated temperature curve A.
- the target temperature curve B begins at the end of the casting plant 1 and describes the curve up to the reel 11.
- the actual values are plotted from the end of the casting plant 1 to the roughing stand 4.
- the measured temperature is above the target temperature.
- the higher-level process model II calculates the temperatures at the various points in the hot strip mill in advance. On the basis of this temperature curve, different setpoints can be specified anew at different points in order to correct the temperature deviation. Different
- Process models, material or microstructure models and / or optimization algorithms can be used to determine the best adaptation strategy.
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)
- Heat Treatment Of Steel (AREA)
- Feedback Control In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020205655.2A DE102020205655A1 (de) | 2020-05-05 | 2020-05-05 | Verfahren zum Steuern oder Regeln der Temperatur eines Stahlbandes bei der Warmumformung in einer Warmbandstraße |
| PCT/EP2021/057720 WO2021223937A1 (de) | 2020-05-05 | 2021-03-25 | VERFAHREN ZUM STEUERN ODER REGELN DER TEMPERATUR EINES STAHLBANDES BEI DER WARMUMFORMUNG IN EINER WARMBANDSTRAßE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4146414A1 true EP4146414A1 (de) | 2023-03-15 |
| EP4146414B1 EP4146414B1 (de) | 2024-03-13 |
Family
ID=75377718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21716283.3A Active EP4146414B1 (de) | 2020-05-05 | 2021-03-25 | Verfahren zum steuern oder regeln der temperatur eines stahlbandes bei der warmumformung in einer warmbandstrasse |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US12492442B2 (de) |
| EP (1) | EP4146414B1 (de) |
| JP (1) | JP7539626B2 (de) |
| CN (1) | CN115551652B (de) |
| DE (1) | DE102020205655A1 (de) |
| WO (1) | WO2021223937A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020205655A1 (de) * | 2020-05-05 | 2021-11-11 | Sms Group Gmbh | Verfahren zum Steuern oder Regeln der Temperatur eines Stahlbandes bei der Warmumformung in einer Warmbandstraße |
| DE102022210057A1 (de) * | 2022-09-23 | 2024-03-28 | Sms Group Gmbh | Verfahren und Computerprogramm zum Betreiben einer Produktionsanlage für ein Metallprodukt |
| CN115608793B (zh) * | 2022-12-20 | 2023-04-07 | 太原科技大学 | 一种机理融合数据的精轧温度调控方法 |
| DE102023135965A1 (de) * | 2023-12-20 | 2025-06-26 | Sms Group Gmbh | Verfahren zum Betrieb einer Warmbandproduktionsanlage und Warmbandproduktionsanlage zur Herstellung eines Warmbandes |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06246331A (ja) * | 1993-03-01 | 1994-09-06 | Nkk Corp | 熱間圧延鋼板の冷却方法 |
| KR100486158B1 (ko) * | 1996-01-31 | 2005-11-08 | 에이에스엠 아메리카, 인코포레이티드 | 열처리의모델베이스예측제어 |
| DE19950502C1 (de) | 1999-10-20 | 2000-11-16 | Thyssenkrupp Stahl Ag | Verfahren zum Herstellen eines Warmbandes |
| DE19963186B4 (de) | 1999-12-27 | 2005-04-14 | Siemens Ag | Verfahren zur Steuerung und/oder Regelung der Kühlstrecke einer Warmbandstrasse zum Walzen von Metallband und zugehörige Vorrichtung |
| DE10156008A1 (de) | 2001-11-15 | 2003-06-05 | Siemens Ag | Steuerverfahren für eine einer Kühlstrecke vorgeordnete Fertigstraße zum Walzen von Metall-Warmband |
| ITMI20021996A1 (it) | 2002-09-19 | 2004-03-20 | Giovanni Arvedi | Procedimento e linea di produzione per la fabbricazione di nastro a caldo ultrasottile sulla base della tecnologia della bramma sottile |
| EP1624982B2 (de) | 2003-02-25 | 2011-06-15 | Siemens Aktiengesellschaft | Verfahren zur regelung der temperatur eines metallbandes, insbesondere in einer fertigstrasse zum walzen von metallwarmband |
| DE102007007560A1 (de) * | 2007-02-15 | 2008-08-21 | Siemens Ag | Verfahren zur Unterstützung einer wenigstens teilweise manuellen Steuerung einer Metallbearbeitungsstraße |
| DE102007058709A1 (de) | 2007-08-04 | 2009-02-05 | Sms Demag Ag | Verfahren zum Herstellen eines Bandes aus Stahl |
| WO2010103659A1 (ja) | 2009-03-13 | 2010-09-16 | 東芝三菱電機産業システム株式会社 | 最適化装置 |
| JP5610869B2 (ja) | 2010-06-21 | 2014-10-22 | 株式会社神戸製鋼所 | 圧延材の冷却制御方法、及びこの冷却制御方法が適用された連続圧延機 |
| EP2428288B1 (de) | 2010-09-08 | 2013-04-17 | Siemens VAI Metals Technologies GmbH | Verfahren zum Herstellen von Stahlbändern durch Endloswalzen oder Semi-Endloswalzen |
| EP2431104A1 (de) * | 2010-09-16 | 2012-03-21 | Siemens Aktiengesellschaft | Echtzeit-Ermittlungsverfahren für Temperatur und Geometrie eines Metall-Warmbandes in einer Fertigstraße |
| TWI552812B (zh) | 2012-01-25 | 2016-10-11 | Sms Group Gmbh | 製造金屬帶的方法與設備 |
| CN103302255B (zh) * | 2012-03-14 | 2015-10-28 | 宝山钢铁股份有限公司 | 一种薄带连铸700MPa级高强耐大气腐蚀钢制造方法 |
| CN106102939B (zh) | 2014-03-19 | 2018-02-13 | 杰富意钢铁株式会社 | 高碳素钢的热轧方法 |
| ES2659544T3 (es) | 2014-03-25 | 2018-03-16 | Thyssenkrupp Steel Europe Ag | Procedimiento para la fabricación de un producto plano de acero altamente resistente |
| US20170307111A1 (en) | 2014-09-25 | 2017-10-26 | Jfe Steel Corporation | Steel strip for electric-resistance-welded steel pipe or tube, electric-resistance-welded steel pipe or tube, and process for producing steel strip for electric-resistance-welded steel pipe or tube |
| JP6435234B2 (ja) | 2015-05-20 | 2018-12-05 | 株式会社日立製作所 | 熱間圧延仕上げミル出側温度制御装置およびその制御方法 |
| DE102019210056B4 (de) | 2018-07-09 | 2023-01-26 | Sms Group Gmbh | Verfahren zur vernetzten Regelung der Führungsgrößen einer Fertigung einer Großrohrbiegeanlage |
| CN109604349B (zh) * | 2018-12-28 | 2020-08-07 | 中铝瑞闽股份有限公司 | 一种铝合金热轧带材板型控制方法 |
| DE102020205655A1 (de) * | 2020-05-05 | 2021-11-11 | Sms Group Gmbh | Verfahren zum Steuern oder Regeln der Temperatur eines Stahlbandes bei der Warmumformung in einer Warmbandstraße |
-
2020
- 2020-05-05 DE DE102020205655.2A patent/DE102020205655A1/de active Pending
-
2021
- 2021-03-25 EP EP21716283.3A patent/EP4146414B1/de active Active
- 2021-03-25 CN CN202180033364.8A patent/CN115551652B/zh active Active
- 2021-03-25 US US17/923,393 patent/US12492442B2/en active Active
- 2021-03-25 WO PCT/EP2021/057720 patent/WO2021223937A1/de not_active Ceased
- 2021-03-25 JP JP2022566410A patent/JP7539626B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP7539626B2 (ja) | 2024-08-26 |
| WO2021223937A1 (de) | 2021-11-11 |
| US12492442B2 (en) | 2025-12-09 |
| EP4146414B1 (de) | 2024-03-13 |
| CN115551652A (zh) | 2022-12-30 |
| DE102020205655A1 (de) | 2021-11-11 |
| US20230203612A1 (en) | 2023-06-29 |
| CN115551652B (zh) | 2026-03-27 |
| JP2023529283A (ja) | 2023-07-10 |
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