EP2662158A1 - Procédé de traitement de produits à laminer et laminoir - Google Patents

Procédé de traitement de produits à laminer et laminoir Download PDF

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Publication number
EP2662158A1
EP2662158A1 EP12166917.0A EP12166917A EP2662158A1 EP 2662158 A1 EP2662158 A1 EP 2662158A1 EP 12166917 A EP12166917 A EP 12166917A EP 2662158 A1 EP2662158 A1 EP 2662158A1
Authority
EP
European Patent Office
Prior art keywords
rolling
rolling stock
stand
hardness
thickness
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.)
Withdrawn
Application number
EP12166917.0A
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Felkl
Andreas MÜLLER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to EP12166917.0A priority Critical patent/EP2662158A1/fr
Priority to BR112014027650A priority patent/BR112014027650A2/pt
Priority to EP13721928.3A priority patent/EP2828012A1/fr
Priority to PCT/EP2013/058279 priority patent/WO2013167366A1/fr
Priority to CN201380023938.9A priority patent/CN104321151A/zh
Publication of EP2662158A1 publication Critical patent/EP2662158A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/04—Thickness, gauge
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/22—Hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/02—Tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/12—Rolling load or rolling pressure; roll force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2271/00—Mill stand parameters
    • B21B2271/02—Roll gap, screw-down position, draft position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/04—Roll speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/10—Motor power; motor current
    • 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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/165—Control of thickness, width, diameter or other transverse dimensions responsive mainly to the measured thickness 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
    • B21B37/46—Roll speed or drive motor control
    • 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
    • B21B37/58—Roll-force control; Roll-gap control

Definitions

  • the invention relates to a method for processing rolling stock and a rolling mill.
  • rolling stock e.g. Rolld steel or various metals when passing through one or more stands.
  • the rolling stock which is present for example in the form of a strip to be rolled to a certain thickness.
  • the rolling stock undergoes a thickness control when passing through the individual rolling stands, which is carried out for example with the aid of a Gaugemeter or a mass flow controller.
  • rolling stock of conventional metal grades in very good thickness quality is produced in single and multi-stand rolling mills.
  • the metal-producing industry is increasingly developing modern metal grades that meet the requirements for lightweight construction with good formability and high ultimate strength.
  • these are e.g. Dual phase and triple steels.
  • a special feature of these metal grades is that their characteristic properties in addition to the alloy components are influenced by a specific cooling during and after rolling. Such changes in the temperature of the rolling stock can cause unwanted variations in the hardness of the rolling stock, e.g. Skid marks or tilting of crystal structures during ferritic rolling occur.
  • the hardness of the rolling stock here means variable material properties of non-geometric type. These are, for example, inhomogeneities in the metallic structure, roughnesses of the surface of the rolling stock, the tensile strength.
  • Conventional thickness regulators such as gauges or mass flow controllers, can only partially compensate for the effects of variations in the hardness of the rolling stock on the thickness quality of the rolling stock, since the variations in hardness can be very short-circuited, in particular when the crystal structure is tilted and in the area of the strip ends.
  • the determination of the actual value of the hardness of the rolling stock is carried out continuously while passing through the rolling mill through the rolling mill before the rolling stock enters the rolling stand, so that an information of the hardness with respect to the considered Location of the rolling stock is obtained. In other words, therefore, a location-dependent hardness of the rolling stock is determined. As a result, fluctuations in the hardness of the rolling stock with respect to the location can be determined in particular.
  • manipulated variables of the following rolling stand are then preset in step b) such that the rolling stock, after passing through the rolling stand, reaches the desired value.
  • information relating to the hardness of the rolling stock is used in the rolling process and the manipulated variables of the rolling stand are changed as a function of their dependence so that a predetermined desired value is maintained with regard to the thickness of the rolling stock. It thus be compensated for fluctuations in the hardness of the rolling stock, this has before passing through the rolling stand and would normally lead to a thickness error after passing through the rolling stand.
  • the method according to the invention can be used both during cold rolling and during hot rolling.
  • the actual value of the hardness of the rolling stock is determined by measuring a parameter correlated with the hardness. Particularly advantageous can be determined as a correlated parameter, the tensile strength of the rolling stock before the inlet of the rolling mill by means of a suitable measuring device.
  • the actual value of the hardness can also be determined from an observation value at a preceding further rolling stand.
  • Such an observation value can be determined based on at least one of the parameters rolling force of the preceding rolling stand, temperature of the rolling stock, strip tension, incoming thickness of the rolling stock in the preceding roll stand, expiring thickness or estimated value of the roll gap thickness at the roll gap of the preceding rolling stand. A measurement with a separate measuring device is then no longer necessary.
  • the employment of the roll gap can be used.
  • the hydraulic adjustment which moves the roll gap, pre-controlled.
  • this feedforward control can already be used in the first stand of a multi-stand rolling mill or in the first pass in a reversing single stand.
  • the precontrol of the thickness can first act on the second stand or the second stitch.
  • the actual value of the hardness in each rolling stand can be observed again and this determined observation value can in turn serve as the basis of the feedforward control for controlling the thickness of the rolling stock in a subsequent roll stand. The same applies to the measurement of hardness.
  • the actual value of the hardness of the rolling stock determined in step a) can be used to adapt the model.
  • the knowledge of the actual value of the hardness can be used to track the so-called material module CM.
  • the material module CM together with the scaffold module is an important model for adaptation the controller dynamics of all other thickness controllers such as Gaugemeter, mass flow controller and monitor control.
  • Fig. 1 shows a rolling mill 2, in this case a cold rolling mill with a rolling stand 4 for processing rolling stock 6.
  • the rolling stand 4 has two rollers 8, the distance of which define the roll gap w.
  • the rolling stock 6, here in the form of a slab, has, prior to the passage of the rolling stand 4, an inlet-side thickness d 0 and an outlet-side thickness d 1 after passing through the rolling stand 4.
  • the aim of the rolling process is that after passing through the roll stand 4, the rolling stock 6 assumes a predetermined outlet-side thickness d 1 .
  • the predetermined thickness d 1 represents the target value I for the rolling process.
  • thickness regulators such as gauges or mass flow controllers in rolling mills.
  • unwanted fluctuations in hardness, ie variable material properties of non-geometric nature such as inhomogeneities in the metallic structure, roughness of the surface or the tensile strength of the rolled material 6 can occur, which influence the rolling process in a rolling mill 4.
  • Conventional thickness regulators such as gauges or mass flow controllers, can only partially compensate for the effects of variations in the hardness of the rolling stock on the thickness quality of the rolling stock, since the variations in hardness can be very short-circuited, in particular when the crystal structure is tilted and in the area of the strip ends.
  • a parameter correlated with the hardness in this case the tensile strength of the rolling stock 6, is measured by means of a measuring device 10 before the inlet of the rolling stand 4.
  • the actual value I of the hardness is detected as a function of the location, so that it also fluctuations of the hardness of the rolling stock are determined depending on the location.
  • the determined actual value I of the hardness of the rolling stock 6 is then further processed in a pilot control device 12.
  • the pilot control device 12 is used as a function of the actual value I the hardness of the rolling stock 6 to determine a value of a manipulated variable S. This serves to control the thickness d 1 of the rolling stock 6 after passing through the roll stand 4 to a predetermined desired value.
  • the manipulated variable S is the setting of the roll gap w, which is moved with hydraulic cylinders 14.
  • the speeds or torques of the drives, not shown, of the rollers 8 of the roll stand 4 come into question.
  • the roll gap w can be moved such that the actual value I the outlet side thickness d 1 of the rolling stock 6 is controlled to a desired value.
  • a further embodiment of the invention in a multi-stand rolling mill 2 shows Fig. 2 ,
  • the rolling mill 2 shown here has, in addition to the roll stand 4, a preceding further roll stand 4a.
  • Fig. 2 used reference numerals corresponding to those from Fig. 1
  • the rolling stock 6 is when passing through the previous roll stand 4a.
  • the actual value I of the hardness of the rolling stock 6 is determined from an observation value B at the preceding further rolling stand 4a.
  • the observation value B At least one of the parameters of rolling force of the preceding rolling mill 4, temperature of the rolling stock 6, strip tension, incoming thickness d -1 of the rolling stock 6 is set into the previous roll stand 4a, tapered thickness d 0 or estimated value of the roll gap thickness at the roll gap w of the preceding roll stand 4a detected metrologically. Based on this observation value B, the actual value I of the hardness of the rolling stock 6 is then determined by means of a computer unit 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
EP12166917.0A 2012-05-07 2012-05-07 Procédé de traitement de produits à laminer et laminoir Withdrawn EP2662158A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP12166917.0A EP2662158A1 (fr) 2012-05-07 2012-05-07 Procédé de traitement de produits à laminer et laminoir
BR112014027650A BR112014027650A2 (pt) 2012-05-07 2013-04-22 método para processamento de material de laminação e laminador
EP13721928.3A EP2828012A1 (fr) 2012-05-07 2013-04-22 Procédé d'usinage d'un produit à laminer et laminoir
PCT/EP2013/058279 WO2013167366A1 (fr) 2012-05-07 2013-04-22 Procédé d'usinage d'un produit à laminer et laminoir
CN201380023938.9A CN104321151A (zh) 2012-05-07 2013-04-22 用于加工轧件的方法和轧机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12166917.0A EP2662158A1 (fr) 2012-05-07 2012-05-07 Procédé de traitement de produits à laminer et laminoir

Publications (1)

Publication Number Publication Date
EP2662158A1 true EP2662158A1 (fr) 2013-11-13

Family

ID=48428438

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12166917.0A Withdrawn EP2662158A1 (fr) 2012-05-07 2012-05-07 Procédé de traitement de produits à laminer et laminoir
EP13721928.3A Withdrawn EP2828012A1 (fr) 2012-05-07 2013-04-22 Procédé d'usinage d'un produit à laminer et laminoir

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP13721928.3A Withdrawn EP2828012A1 (fr) 2012-05-07 2013-04-22 Procédé d'usinage d'un produit à laminer et laminoir

Country Status (4)

Country Link
EP (2) EP2662158A1 (fr)
CN (1) CN104321151A (fr)
BR (1) BR112014027650A2 (fr)
WO (1) WO2013167366A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015092770A1 (fr) * 2013-12-20 2015-06-25 Novelis do Brasil Ltda. Changement dynamique de réduction (dsr) pour réguler la température dans des laminoirs en tandem
EP4061552B1 (fr) 2019-11-21 2023-06-28 SMS Group GmbH Procédé, dipositif de contrôle et laminoir pour le réglage d'une température de sortie d'une bande métallique quittant un train de laminage
WO2023146701A1 (fr) * 2022-01-27 2023-08-03 Novelis Inc. Système et procédé de commande de filetage dans un laminoir
EP4360770A1 (fr) * 2022-10-25 2024-05-01 SMS Group GmbH Procédé et programme informatique pour adapter la valeur d'épaisseur théorique pour le réglage de l'épaisseur d'une bande à neuf cylindres pour au moins une cage de laminoir

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3210682A1 (fr) * 2016-02-23 2017-08-30 Primetals Technologies Germany GmbH Compensation complete des excentricites de cylindre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1798305A1 (de) * 1968-09-23 1972-01-13 Froehling Fa Josef Mess- und Steuervorrichtung
EP0102937A1 (fr) * 1982-09-07 1984-03-14 VOEST-ALPINE Aktiengesellschaft Dispositif pour commander l'épaisseur dans un laminoir à froid
DE19729773C1 (de) * 1997-07-11 1999-02-04 Siemens Ag Verfahren und Einrichtung zum Walzen eines Metallbandes
DE19831480C1 (de) * 1998-07-14 2000-01-13 Schloemann Siemag Ag Verfahren zum Voreinstellen von Kaltverformungsanlagen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054302A (en) * 1989-04-07 1991-10-08 Kawasaki Steel Corporation Hardness compensated thickness control method for wet skin-pass rolled sheet
JP2535690B2 (ja) * 1991-12-27 1996-09-18 新日本製鐵株式会社 タンデム圧延機における板厚制御方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1798305A1 (de) * 1968-09-23 1972-01-13 Froehling Fa Josef Mess- und Steuervorrichtung
EP0102937A1 (fr) * 1982-09-07 1984-03-14 VOEST-ALPINE Aktiengesellschaft Dispositif pour commander l'épaisseur dans un laminoir à froid
DE19729773C1 (de) * 1997-07-11 1999-02-04 Siemens Ag Verfahren und Einrichtung zum Walzen eines Metallbandes
DE19831480C1 (de) * 1998-07-14 2000-01-13 Schloemann Siemag Ag Verfahren zum Voreinstellen von Kaltverformungsanlagen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015092770A1 (fr) * 2013-12-20 2015-06-25 Novelis do Brasil Ltda. Changement dynamique de réduction (dsr) pour réguler la température dans des laminoirs en tandem
CN106029244A (zh) * 2013-12-20 2016-10-12 诺维尔里斯巴西有限公司 用以控制串列式轧机中的温度的动态减小转变(dsr)
US10016799B2 (en) 2013-12-20 2018-07-10 Novelis Do Brasil Ltda Dynamic shifting of reduction (DSR) to control temperature in tandem rolling mills
EP3089833B1 (fr) 2013-12-20 2018-09-19 Novelis Do Brasil LTDA. Changement dynamique de réduction (dsr) pour réguler la température dans des laminoirs en tandem
CN106029244B (zh) * 2013-12-20 2020-03-20 诺维尔里斯巴西有限公司 用以控制串列式轧机中的温度的动态减小转变(dsr)
EP4061552B1 (fr) 2019-11-21 2023-06-28 SMS Group GmbH Procédé, dipositif de contrôle et laminoir pour le réglage d'une température de sortie d'une bande métallique quittant un train de laminage
WO2023146701A1 (fr) * 2022-01-27 2023-08-03 Novelis Inc. Système et procédé de commande de filetage dans un laminoir
EP4360770A1 (fr) * 2022-10-25 2024-05-01 SMS Group GmbH Procédé et programme informatique pour adapter la valeur d'épaisseur théorique pour le réglage de l'épaisseur d'une bande à neuf cylindres pour au moins une cage de laminoir

Also Published As

Publication number Publication date
WO2013167366A1 (fr) 2013-11-14
EP2828012A1 (fr) 2015-01-28
BR112014027650A2 (pt) 2017-06-27
CN104321151A (zh) 2015-01-28

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