WO2007093333A1 - Procédé et dispositif pour identifier une partie d'un demi-produit - Google Patents

Procédé et dispositif pour identifier une partie d'un demi-produit Download PDF

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Publication number
WO2007093333A1
WO2007093333A1 PCT/EP2007/001148 EP2007001148W WO2007093333A1 WO 2007093333 A1 WO2007093333 A1 WO 2007093333A1 EP 2007001148 W EP2007001148 W EP 2007001148W WO 2007093333 A1 WO2007093333 A1 WO 2007093333A1
Authority
WO
WIPO (PCT)
Prior art keywords
semifinished product
profile
profiles
product
semi
Prior art date
Application number
PCT/EP2007/001148
Other languages
German (de)
English (en)
Inventor
Horst Anhaus
Original Assignee
Iba Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Iba Ag filed Critical Iba Ag
Publication of WO2007093333A1 publication Critical patent/WO2007093333A1/fr

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Classifications

    • 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
    • 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
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • 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
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
    • 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
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product

Definitions

  • the invention relates to a method and a device for identifying a section of a semifinished product, in particular the assignment of the section to the semifinished product itself or to a semifinished product of another manufacturing stage, from which the semifinished product emerged or emerged from the semifinished product.
  • Semifinished products are rods, hollow rods, profiles and in particular sheets and so-called coils, ie wound sheet metal strips understood.
  • the semi-finished product usually passes through several production stages.
  • a precursor semifinished product of the finished sheet is, in particular, a so-called slab.
  • Slabs are usually blocks with a width and length of, for example, each 1 m and a height of 20 cm.
  • the slabs are fed to a hot rolling mill where they are rolled into a sheet metal blank. After hot rolling, the sheet is usually wound into so-called coils and rolled in one or more cold rolling mills to produce a thin sheet.
  • a finishing stage can be provided, in which the thin sheet is hot-dip galvanized, for example.
  • Slab, blank sheet, thin sheet and end sheet are therefore semi-finished products of different production stages.
  • the properties of the finished semi-finished products are significantly influenced by the raw material, in particular its chemical composition, as well as by the manufacturing parameters in the individual production stages.
  • semi-finished products of various properties are produced. If these properties differ only in terms of their composition, for example due to different carbon contents, they are no longer distinguishable from the outside. For the purpose of quality assurance, it is therefore necessary that a finished semi-finished product can be clearly assigned to the raw material or a batch.
  • Charge is understood as meaning a molten metal of the same composition coming from a melting furnace.
  • Remain from a batch, for example, remaining stock they are usually stored in the rolling mill in a storage area and provided with an identifier by which it can be seen to which Lot of the remaining stock belongs. If this identifier, for example a companion note, is lost or no longer legible, then an assignment and an identification of the composition is made possible only by a complex analysis.
  • the invention has for its object to enable a secure and unambiguous identification and assignment of a portion of a semifinished product.
  • the object is achieved according to the invention by a method having the features of claim 1. Thereafter, it is provided that during the manufacturing process, a measured variable characterizing the semifinished product is continuously recorded and stored as a measurement profile. If it is now necessary to assign the section either to the semifinished product itself or to the semifinished product of another production step, for example an identification of the batch from which the semifinished product was manufactured, a measurement profile associated with the section is checked for conformity with the stored measurement profiles.
  • the particular advantage of the method is that the semi-finished product, which is continuously rolled, pressed or otherwise processed continuously in the production stage, receives a measurement profile individually characterizing the semifinished product in the manner of a fingerprint.
  • a small portion of the entire measurement profile is sufficient for unambiguous identification.
  • each section of a billet fabric (coil) is uniquely identifiable and can be associated with the coil from which it originated.
  • this fingerprint which can easily be taken up at any later time by a new measurement, a clear assignment is made possible by comparison with the measurement profiles stored in a database.
  • the measurement profile in particular the measurement profile of the first manufacturing stage, is stored together with an origin information.
  • the assignment takes place in particular to the raw material (slab) and thus to the batch.
  • the information of origin preferably comprises information about the material composition and / or details of production parameters, such as, for example, temperature, pressing force, processing speed, etc.
  • This origin information is either directly assigned to the measurement profile or indirectly via an identifier or a code, which can be used to derive the relevant information with the aid of a tabular assignment.
  • this is measured again for identification and assignment of the section and examined the partial profile thus obtained with the stored measurement profiles for conformity.
  • a no longer identifiable remainder item can be assigned to a specific raw material. This also makes it possible to identify the associated batch in the event of a detected quality defect.
  • the measured variable is a geometric size of the semifinished product, in particular its thickness.
  • the semifinished product undergoes a mechanical treatment and forming. Since the rolling is not completely homogeneous at least in the micrometer range, for example due to fluctuations in the pressing force of the rolls or due to local inhomogeneities on the roll surface and / or the surface of the semi-finished product, the thickness varies within certain tolerances.
  • the surface texture also has variations. These variations may in this case have, for example, due to an eccentricity of the rolls caused basic period.
  • the thickness dimension as well as the surface condition, so that a possibly existing basic periodicity forms a fundamental oscillation, which is superimposed by a "noise" caused by the various other influencing factors
  • the noise is therefore an individual characteristic characterizing the respective semifinished product and is evaluated in the present method, the thickness or height differences forming the noise typically being in the range of a few micrometers.
  • a surface measurement is carried out according to an expedient embodiment.
  • the flatness or surface roughness of the semifinished product is measured as the measured variable.
  • the surface topology is evaluated here.
  • the measuring profiles are obtained directly by suitable measuring devices, in particular thickness measuring devices or measuring devices for measuring the surface condition, or else by indirect measurements, for example by evaluating the rolling force.
  • suitable measuring devices in particular thickness measuring devices or measuring devices for measuring the surface condition, or else by indirect measurements, for example by evaluating the rolling force.
  • non-contact measuring devices such as optical measuring devices, isotope radiators for thickness measurement or, alternatively, also mechanical measuring devices for detecting the measured variable are used as measuring devices for direct measurement.
  • the measured variable is recorded over the entire length of the continuously produced semi-finished product and a continuous line profile is recorded as a measuring profile.
  • the line profile is hereby recorded at a precisely defined position, in particular in the middle of the semifinished product, in order to create reproducible measuring conditions.
  • several line profiles are arranged next to one another with the aid of several measuring points arranged next to one another, so that overall a two-dimensional profile results.
  • both a start and an output profile are detected within a manufacturing stage, which are assigned to each other. Since processing of the semi-finished product takes place within the production stage, during which the surface and during rolling, in particular also the thickness of the sheet, is changed, the starting product is uniquely linked to the input product of the respective production stage by this measure. In this case, due to the defined rolling parameters, an unambiguous assignment of each section of the starting product to an associated section of the input product is made possible.
  • the measured variable is in each case at the end of a preceding production stage and at the beginning of a subsequent manufacturing stage is detected.
  • so-called output profiles or input profiles of the measured variable are created.
  • the output profiles and input profiles of consecutive production stages are assigned to one another over a plurality of production stages. This assignment takes place, for example, automatically, as soon as an input profile is included in the data memory.
  • the linking takes place in particular in such a way that in each case the origin information of the output profile is assigned to the input profile. That The source information is virtually looped through to the end product. Thus, the origin information can be retrieved directly from the initial profile of the final product.
  • the individual production stages are rolling mills and, if required, additionally a finishing stage.
  • the first manufacturing stage here is preferably a hot rolling mill, which is provided in particular for initial rolling of a slab or the like.
  • the first output profile is recorded as the first measurement protocol and provided with source information.
  • an assignment to the respective slab is required in a conventional way, since the input product, namely the slab, is not suitable for measuring the thickness profile. Since no confusion is possible at this time, a secure assignment of source information is possible. This allocation takes place in particular This is done automatically by reading in-plant data to identify the batch currently being used.
  • this process is preferably used to carry out a unique parentage assignment, also referred to below as genealogy.
  • a unique parentage assignment also referred to below as genealogy.
  • the particular advantage of this is that the measurement profiles a clear assignment in both directions, ie both the end product to the starting product and the starting product to the final product is possible. In a preferred further training this is used in the sense of quality assurance. For example, if a deficiency of a section of the semifinished product, ie, for example, a section of a sheet-metal coil, is detected, firstly its precursor product and subsequently further sections produced from this precursor product are identified.
  • the section is assigned to a specific location and a specific position, in particular within a precursor product.
  • further production parameters are used. Such manufacturing parameters are, for example, the degree of deformation or the thickness reduction in the individual stages. From these production parameters, it is possible to assign the measured section of the end product to a very specific defined position, for example within the slab.
  • This method for spatially resolved assignment is used in particular for process monitoring and quality assurance purposes. If, for example, it is determined that certain process or production parameters were not within the specified target ranges within a manufacturing stage for a certain period of time and can be expected due to these deviations with quality losses in the final product, it is determined when the fault has occurred and which rejects sub-range during this disturbance time passed through this manufacturing stage. It In this way, the beginning and the end of this scrap subarea can be determined by evaluating the production parameters and production data. By creating partial profiles at the beginning and at the end of the reject section and comparing them with the stored measurement profiles, the assigned partial area in the semi-finished product can be determined at a subsequent production level and marked as scrap.
  • 1 is a block diagram illustrating various production stages in the production of a sheet semifinished product
  • Fig. 2 is a block diagram for explaining the method for tracing the descent of a final product
  • Fig. 3 is a schematic block diagram illustrating the method of
  • Fig. 4 is a schematic and highly simplified representation of a measuring arrangement with a data acquisition device.
  • a metallic semifinished product 2A-D passes through a plurality of production stages A, B, C.
  • the first production stage A represents a hot rolling train
  • the second manufacturing stage B a cold rolling mill
  • the production stage C a finishing stage, in particular for producing a Blechs dar.
  • the finished semifinished product hereinafter referred to as Endblech 2D, is finished in the final finishing stage C, in particular hot-dip galvanized.
  • Endblech 2D is finished in the final finishing stage C, in particular hot-dip galvanized.
  • a blank sheet 2B is rolled from a slab 2A forming the semifinished product in a hot rolling process, usually rolled up into a coil 4 and then cold-rolled in the production stage B into the sheet 2C.
  • the thin sheet 2C is in turn rolled up into a coil 4 and then fed to the finishing stage C for finishing.
  • the individual production stages A, B, C can be combined within a common system or arranged at different locations. It is also not absolutely necessary for the semifinished products 2B, 2C to be rolled up onto coils 4 between the production stages.
  • the method described below is also applicable to other semi-finished products, in particular metallic semi-finished products, such as rods, tubes, which are used within a production stage in a continuous process, such as rolling, pressing, extruding, etc. be produced as so-called meter or endless goods.
  • the method is also applicable to non-metallic semi-finished products.
  • a thickness profile is detected as output profile 6D-1 of blank sheet 2B by means of a measuring device 8.
  • measuring profiles are recorded as input profiles 6B-2, 6C-2 of the blank sheet 2B or of the thin sheet 2C before the respective machining operation.
  • respective output profiles 6C-1 and 6D-1 of the thin sheet 2C and the end sheet 2D are detected.
  • the input-side thickness profile determination that is to say the input profiles 6B-2, 6C-2
  • the input profiles 6B-2, 6C-2 can also be dispensed with. If both an input profile 6B-2, 6C-2 and an output profile 6C-1, 6D-1 are detected, the thickness profiles 6B-2, 6C-1 and 6C-2 and 6D-1 assigned to one another become more suitable Assigned way. If no input profiles 6B-2, 6C-2 are detected, an assignment is made directly between the output profiles 6B-1, 6C-1, 6D-1. 01148
  • the measuring device 8 comprises, in particular, non-contact measuring sensors which are oriented at a precisely defined position relative to the laminates 2B-2D 1, in particular in their middle.
  • the measuring device 8 is in this case designed such that it continuously measures the thickness during the continuous production process of the sheets 2B-2D and outputs the thickness profiles 6B-6D as measured data.
  • the data processing device 14 comprises a memory 16 in which the profiles 6B-6D of several, preferably all, of the semi-finished products 2B-2D produced in the rolling mill are stored.
  • the data processing device 14 further comprises an evaluation unit 18 and is part of a data processing system which, in addition to the data processing device 14, also comprises one or more data acquisition devices 20A, B.
  • the profiles 6B-6D transmitted by the measuring devices 8 are stored in the memory 16.
  • an origin information 22 is assigned to each profile 6B-6D.
  • Information about the chemical composition and / or the assignment to specific batches and / or information about specific production parameters, etc. is stored in this origin information 22.
  • linking information is stored, via which the output profiles 6B, C, D-1 are linked to the assigned input profiles 6B.C-2.
  • three different profiles for different semi-finished products in the respective production stages A, B, C are stored by way of example.
  • the production stages B, C three respective input profiles belonging to different semi-finished products and three output profiles belonging to different semi-finished products are stored.
  • the gray shaded profiles are profiles that belong to the same semi-finished product in belong to different production stages. These gray-shaded profiles form a common family, because the semi-finished products that belong to them have come apart.
  • a sheet portion 24 is assigned to the associated semi-finished product in one of the production stages A, B, C.
  • a partial profile 26 which is to be assigned to the section 26 is checked with the aid of the evaluation unit 18 with regard to its conformity with the profiles 6A-6D stored in the memory.
  • a mathematical algorithm io is used, which makes the check for agreement based on characteristic profile data. If a match is found, the section 24 is assigned to the respective semi-finished product 2A-2D.
  • a partial profile 26 for a section 24 of the remainder item is measured by a test measuring device 28 and the associated profile and thus the associated semifinished product are determined.
  • the measured partial profile 26 is transmitted to the evaluation unit 18, which then assigns it to the associated output profile 6B-1 (in FIG. 2, in the evaluation unit 18, the gray background profile). 5
  • this method is used, for example, in the context of quality control. If a quality defect is detected in a part of an end panel 2D in a quality control, which is due either to a material defect or to a processing error, a partial profile 26 is also recorded here with the aid of the testing device 28 and with its help the associated output profile 6D -1 of the associated end plate 2D and thus identifies the end plate 2D. In this way, therefore, a total of a faulty batch identified and possibly carried out a suitable recall or the entire batch are retained.
  • the subregion 30 can be unambiguously assigned an error-prone subregion 32 in the starting profile 6C-1 of the thin sheet 2C.
  • the known beginning and the known end of the portion 30 is used as a comparison profile to determine the corresponding beginning and end of the portion 32 in the output profile 6C-1.
  • FIG. 4 also has a measuring device 8 with a multiplicity of individual measuring points 34 distributed over the width of the semifinished product 2B-2D.
  • the individual measuring points 34 are in each case connected to a further data acquisition device 2OB, which is also part of the data processing system and transmits the data to the data processing device 14.
  • a measuring point 34 is highlighted centrally in the middle with gray hatching. In the case of one-dimensional measuring systems, only this central measuring point 34 is used in order to obtain a line-thickness profile. If, as shown in FIG. 4, a plurality of measuring points 34 are arranged next to one another, then a plurality of line profiles and thus also in the transverse direction to the sheet 2B-2D additional information is obtained. Overall, a two-dimensional thickness profile can be determined from this, whereby the accuracy and uniqueness of an assignment can be additionally increased.
  • At least one of the semi-finished products 2B-2D is determined and stored in a memory for a later comparison. If the assignment of a specific section to one of the semifinished products 2A-2D or also to a specific sub-region of the semifinished products is necessary, the sub-profile 26 is compared with the deposited profiles 6B-6D. Since each section of the thickness profiles for the respective semifinished products 2A-2D is characteristic, it is sufficient to evaluate a short sub-profile 26, which for example corresponds to a length of only a few centimeters of the semifinished product in order to ensure an unambiguous assignment. Another particular advantage of the method is the fact that for each semifinished product a genealogy examination can be carried out, ie that the predecessor as well as the successor semifinished products can be clearly assigned.
  • the continuous recording of the line profiles offers a variety of possible applications, both in terms of efficient use of resources (accurate detection of defective sections, accurate identification of existing remainders ”) as well as in terms of quality assurance measures (identification of a batch to a than Defective detected end plate 2D) can be used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

Selon l'invention, pour qu'une partie (24) puisse être associée sans équivoque à un demi-produit, en particulier lors de la production de demi-produits métalliques tels que des tôles, une grandeur de mesure caractérisant le demi-produit est détectée en continu et mémorisée en tant que profil de mesure, en particulier profil d'épaisseur. Un profil de mesure partiel (26) relatif à la partie (24) est contrôlé si nécessaire pour déterminer s'il coïncide avec les profils de mesure en mémoire.
PCT/EP2007/001148 2006-02-13 2007-02-10 Procédé et dispositif pour identifier une partie d'un demi-produit WO2007093333A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006006733.9 2006-02-13
DE200610006733 DE102006006733B3 (de) 2006-02-13 2006-02-13 Verfahren und Vorrichtung zur Identifizierung eines Teilstücks eines Halbzeugs

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Cited By (1)

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EP3566789A1 (fr) * 2018-05-11 2019-11-13 Muhr und Bender KG Dispositif hydraulique et procédé de réglage d'un écartement entre cylindres d'une cage de laminoir

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DE102014108664B4 (de) * 2014-06-20 2017-09-21 Friedrich Wilhelm Bauer Identifikation von Bauteilen
DE102015213709B4 (de) * 2015-07-21 2017-09-21 Achenbach Buschhütten GmbH & Co. KG Verfahren zur Bereitstellung eines längenbezogenen Materialbahndatensatzes einer zu einem Coil gewickelten Materialbahn
DE102015221417A1 (de) * 2015-11-02 2017-05-04 Bayerische Motoren Werke Aktiengesellschaft Bereitstellen von vereinzelten Materialteilen und Verarbeiten solcher Materialteile
DE102017217768A1 (de) 2017-10-06 2019-04-11 Bayerische Motoren Werke Aktiengesellschaft Kennzeichnen von Fahrzeugteilen
DE102019210581A1 (de) * 2019-07-18 2021-01-21 Robert Bosch Gmbh Verfahren zum Analysieren einer Probe und Vorrichtung zum Analysieren einer Probe
DE102020133761A1 (de) 2020-12-16 2022-06-23 RESOUREX GmbH Verfahren zur Optimierung einer Materialausnutzung
DE102022126564A1 (de) 2022-10-12 2024-04-18 Bayerische Motoren Werke Aktiengesellschaft Erfassungssystem und Verfahren zum automatisierten Dokumentieren von Mängeln von Halbzeugen

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EP1260895A2 (fr) * 2001-05-10 2002-11-27 Voest-Alpine Industrieanlagenbau GmbH & Co. Procédé et dispositif pour la liaison des données entre des étapes de production

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JPS61153508A (ja) * 1984-12-26 1986-07-12 Kobe Steel Ltd 厚板の平面形状測定装置
EP1260895A2 (fr) * 2001-05-10 2002-11-27 Voest-Alpine Industrieanlagenbau GmbH & Co. Procédé et dispositif pour la liaison des données entre des étapes de production

Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP3566789A1 (fr) * 2018-05-11 2019-11-13 Muhr und Bender KG Dispositif hydraulique et procédé de réglage d'un écartement entre cylindres d'une cage de laminoir
WO2019215197A1 (fr) * 2018-05-11 2019-11-14 Muhr Und Bender Kg Cage de laminoir munie d'un système hydraulique de régulation de l'espace entre cylindres et procédé afférent
US11491523B2 (en) 2018-05-11 2022-11-08 Muhr Und Bender Kg Hydraulic control of a roll gap for a roll stand

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