EP4504983A1 - Verfahren zum herstellen eines metallproduktes - Google Patents
Verfahren zum herstellen eines metallproduktesInfo
- Publication number
- EP4504983A1 EP4504983A1 EP23713079.4A EP23713079A EP4504983A1 EP 4504983 A1 EP4504983 A1 EP 4504983A1 EP 23713079 A EP23713079 A EP 23713079A EP 4504983 A1 EP4504983 A1 EP 4504983A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- assigned
- manipulated variables
- actual
- metal product
- property
- 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.)
- Pending
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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D46/00—Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons
-
- 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
-
- 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
-
- 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
- C21D8/0247—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 heat treatment
-
- 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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
- C23G3/028—Associated apparatus, e.g. for pretreating or after-treating for thermal or mechanical pretreatment
-
- 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
-
- 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
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/0205—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric not using a model or a simulator of the controlled system
Definitions
- the invention relates to a method for producing a metal product in a plurality of successive process stages in a steelworks.
- Known process stages in such a manufacturing process are, for example: B. the blast furnace, a casting machine, a hot rolling mill, etc.
- a set of control variables is assigned to the individual process stages, which can be used to influence the process in the individual process stages.
- the process aims to achieve a predetermined target property for the metal product at the end of the last of the successive process stages. Which final process stage is depends on the desired metal product to be produced.
- process models for (pre-)control or regulation of individual process stages or a plurality of successive process stages has been known in the prior art for many years. Examples of this are e.g. B. a pass schedule calculator for roughing and finishing mills or process models for controlling a cooling section.
- the process models used in the manufacturing process of a rolled end product can be linked to one another via a process control system, for example. This makes it possible to exchange relevant process variables between the individual models and, for example, B. to increase the prediction accuracy of the individual process models.
- An important mechanical property of a metal product is, for example, the grain size because it influences both the forming behavior of the metal product during rolling, especially during hot rolling, and the transformation behavior of the metal product in a subsequent cooling section.
- the exact determination of the grain size is important
- a well-known method for accurately measuring the grain size in a metal strip is the so-called laser-ultrasound method (LUS method). It is used at various positions within the successive process stages in order to observe the structure or the development of the structure.
- LLS method laser-ultrasound method
- the property “structure” is only an example of a large number of properties of the metal strip that are traditionally measured in a process stage of the manufacturing process, but which then have no influence on upstream and/or downstream process stages in the manufacturing process to achieve a predetermined target property at the exit of each final process stage.
- the final process stage is the process stage at the output of which the metal product is output as desired.
- an actual property deviates from an assigned target property, in particular in the case of a deviation of the actual structure from a target structure, no corrections are traditionally made to the settings of the individual process stages during the passage of the metal strip.
- the invention is based on the object of developing a known method for producing a metal product in such a way that the setting of desired target properties of the metal strip at the exit of the last process stage is made possible in narrower tolerances than was previously possible in the prior art.
- This task is solved by the method claimed in claim 1.
- This method is characterized in that the target property for the metal product is specified at the end of the last of the successive process stages and that the at least one manipulated variable for regulating the actual property of the metal product is selected from a set of manipulated variables
- Page 2 which follows at least one process stage to which the measuring location is assigned.
- the last process stage is the process stage at the output of which the metal product with the desired target property is output.
- the method according to the invention requires the existence of at least two successive process stages.
- metal strip is used uniformly for all process stages throughout the entire manufacturing process. i.e. There is no conceptual distinction as to which process stage the metal strip is currently going through and how the metal strip is treated there.
- Page 3 to design the properties of the metal product. This is the case with, e.g. B. from the automotive industry, constantly increasing demands on the products manufactured in a steelworks in the individual process stages represent an immediate competitive advantage.
- the determined actual properties of the metal product or its preliminary products are used according to the invention in a process model for the control and/or regulation of, for example, the entire manufacturing process, through the melting and casting process to hot rolling and final cooling in a cooling section and beyond.
- the measured actual properties are used by the process model to derive the optimal manipulated variables for the individual process stages with regard to the desired target properties.
- the optimized manipulated variables determined in this way advantageously lead to an improved setting of the final target properties of the hot-rolled metal product, i.e. H. to set its target properties in narrower tolerances than was possible in the prior art.
- the variation of manipulated variables claimed here in process stages that follow the process stage with the measuring location offers the advantage that an already manufactured metal product that does not yet have the desired target property at the measuring location may still be possible by varying the manipulated variables in the subsequent process stages can be saved after the final production stage with a view to achieving the target properties.
- the term “actual property of the metal strip” is defined. It is clarified that, within the meaning of the invention, this can be either an actual material property, an actual strength parameter or an actual geometric property of the metal strip.
- actual property and target property can each be based on the same property. However, this is by no means mandatory; Rather, the terms “actual property” and “target property” can also mean different properties. This applies in particular if a target property can be derived or calculated from another actual property; and vice versa. In these cases, the present invention assumes that modules are present in the respective control loops, in particular in the process models used, in order to convert one property into the other property. For example, a certain measured grain size as an actual material property allows a conclusion to be drawn about the resulting strength as a target property.
- the method according to the invention for producing the metal product has at least, for example, individual of the following process stages:
- Melting casting preferably including strand feeding, hot rolling, pickling, cold rolling, heat treatment, surface coating, tempering, stretch straightening.
- the process stages mentioned are, to the extent that they are provided for in individual cases, preferably carried out one after the other in the order mentioned.
- Figures 1 and 2 each show examples of different process routes in which various of the process stages mentioned are passed through one after the other to produce different metal products.
- Example A shows a complete steel process route in individual steps, in which all of the process stages mentioned follow one another.
- Example B shows a coupled steel production route for producing thin strip as a metal product. In this process route, the casting and rolling process stages are carried out in a CSP®
- a third exemplary embodiment shows a coupled steel process route in which the casting and rolling process stages in a CSP® plant, the pickling and cold rolling process stages in a PLTCM plant (Coupled Pickling Line and Tandem Coldrolling Mill) and the heat treatment and skin pass process stages in can be combined with each other in a CAL system (Continuous Annealing Line).
- the claimed method can also be used for process routes not shown here for the production of a metal product.
- Figure 2 shows two further exemplary embodiments of possible process routes, e.g. B. the process route D for the production of electrical steel strip, so-called silicon strip, as a metal product and, as exemplary embodiment E, a process route aluminum for the production of aluminum strip as a metal product.
- B the process route D for the production of electrical steel strip, so-called silicon strip
- E a process route aluminum for the production of aluminum strip as a metal product.
- the manipulated variable for controlling the actual property of the metal product can be selected from the set of manipulated variables that is assigned to one of the process stages that follows the melting process stage, such as one the process stages of casting, optionally including strand guidance, hot rolling, pickling,
- the manipulated variable for controlling the actual property of the metal product can be selected from the set of manipulated variables that is assigned to one of the process stages that is assigned to the casting process stage follows, such as one of the process stages of hot rolling, pickling, cold rolling, heat treatment, surface coating, tempering or stretch straightening.
- the manipulated variable for controlling the actual property of the metal product can be selected from the set of manipulated variables assigned to one of the process stages that follows the hot rolling process stage, such as one the process stages of pickling, cold rolling, heat treatment, surface coating, tempering or stretch straightening.
- the manipulated variable for controlling the actual property of the metal product can be selected from the set of manipulated variables that is assigned to one of the process stages that follows the pickling process stage, such as one the process stages of cold rolling, heat treatment, surface coating, tempering or stretch straightening.
- the manipulated variable for controlling the actual property of the metal product can be selected from the set of manipulated variables that follows the cold rolling process stage, such as one of the heat treatment, surface coating, skin pass process stages or stretch straightening.
- the manipulated variable for controlling the actual property of the metal product can be selected from the set of manipulated variables assigned to one of the process stages that follows the heat treatment process stage, such as one the process stages of surface coating, tempering or stretch straightening.
- the manipulated variable for controlling the actual property of the metal product can be selected from the set of manipulated variables assigned to one of the process stages that follows the surface coating process stage, such as one the process stages of tempering or stretch straightening.
- the manipulated variables preferably assigned to the individual process stages can be seen as examples from the table according to FIG. 3, pages 1 and 2, and/or the dependent claims.
- the claimed method can also be used for manipulated variables not shown here for the production of a metal product.
- the invention provides that at least one manipulated variable is varied appropriately as part of the control of the actual property to the target property of the metal strip.
- This manipulated variable must be selected from a process stage that follows the process stage in which the measuring location for the actual property is located.
- further manipulated variables can be varied from any other process stage, i.e. from the process stage that corresponds to the process stage to which the measuring location is assigned or is upstream or downstream of it.
- a first manipulated variable for controlling the actual properties of the metal product can be selected from a set of manipulated variables that is assigned to a first process stage, which is the process stage, which is the measuring location
- page 8 is assigned, follows, and a second manipulated variable for controlling the same actual properties of the metal product can be selected from a set of manipulated variables that is assigned to a second process stage that follows the first process stage.
- the variation of manipulated variables in a process stage that is upstream of the process stage with the measuring location offers the advantage that, in particular, metal products that will still be produced in the future can be “saved” with regard to the desired target property, even if the metal products produced so far Measuring location has a deviation between the actual and target properties.
- the manipulated variable “chemical composition of the melt” for a new product can be changed according to the method according to the invention in such a way that the desired properties of the hot-rolled product are achieved at the target position (while maintaining the subsequent process control).
- the mechanical properties to be achieved could also be achieved in another example if the process parameters for the casting process are changed using the method according to the invention in such a way that a more advantageous structure is achieved for setting the desired properties, e.g. B. via a different temperature control during solidification in the strand.
- the process control during melting or in the subsequent hot rolling process can be maintained.
- the production stages can at least partially be partial production stages for producing the Meta II product as a
- the manipulated variables can be calculated using a process model, for example as part of a simulation calculation, preferably in real time as set values for actuators assigned to the manipulated variables.
- the adaptation of the process parameters just described for each system component involved in the production of the hot-rolled product can be carried out in such a way that the remaining process control in the other parts of the system remains unchanged.
- the method according to the invention is able to predict the effect of the changes made for a process step on the subsequent process steps and to make corresponding adjustments to the process parameters of these steps still to be carried out. Accordingly, the method according to the invention can also change the setting parameters for more than one system component involved and predict the effects on the other system models using the process models used, so that the desired mechanical properties can be set in the end product.
- the complexity increases accordingly the more variations in the setting parameters are made.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022203248.9A DE102022203248A1 (de) | 2022-04-01 | 2022-04-01 | Verfahren zum Herstellen eines Metallproduktes |
| PCT/EP2023/056984 WO2023186585A1 (de) | 2022-04-01 | 2023-03-20 | Verfahren zum herstellen eines metallproduktes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4504983A1 true EP4504983A1 (de) | 2025-02-12 |
Family
ID=85772070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23713079.4A Pending EP4504983A1 (de) | 2022-04-01 | 2023-03-20 | Verfahren zum herstellen eines metallproduktes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250215521A1 (de) |
| EP (1) | EP4504983A1 (de) |
| DE (1) | DE102022203248A1 (de) |
| WO (1) | WO2023186585A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117141037B (zh) * | 2023-10-30 | 2024-02-02 | 山西昌鸿电力器材有限公司 | 一种电力金具加工工艺 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT408623B (de) * | 1996-10-30 | 2002-01-25 | Voest Alpine Ind Anlagen | Verfahren zur überwachung und steuerung der qualität von walzprodukten aus warmwalzprozessen |
| DE102019132029A1 (de) * | 2019-11-26 | 2021-05-27 | Thyssenkrupp Steel Europe Ag | Herstellung eines gewünschten Metallwerkstücks aus einem Metallflachprodukt |
| JP7200982B2 (ja) * | 2020-09-14 | 2023-01-10 | Jfeスチール株式会社 | 材料特性値予測システム及び金属板の製造方法 |
-
2022
- 2022-04-01 DE DE102022203248.9A patent/DE102022203248A1/de active Pending
-
2023
- 2023-03-20 US US18/852,443 patent/US20250215521A1/en active Pending
- 2023-03-20 EP EP23713079.4A patent/EP4504983A1/de active Pending
- 2023-03-20 WO PCT/EP2023/056984 patent/WO2023186585A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022203248A1 (de) | 2023-10-05 |
| US20250215521A1 (en) | 2025-07-03 |
| WO2023186585A1 (de) | 2023-10-05 |
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