EP0775537A2 - Procédé pour la régulation de la section transversale d'un produit laminé - Google Patents

Procédé pour la régulation de la section transversale d'un produit laminé Download PDF

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Publication number
EP0775537A2
EP0775537A2 EP96118338A EP96118338A EP0775537A2 EP 0775537 A2 EP0775537 A2 EP 0775537A2 EP 96118338 A EP96118338 A EP 96118338A EP 96118338 A EP96118338 A EP 96118338A EP 0775537 A2 EP0775537 A2 EP 0775537A2
Authority
EP
European Patent Office
Prior art keywords
control
rolling stock
loop
rolling
width
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Withdrawn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
EP96118338A
Other languages
German (de)
English (en)
Other versions
EP0775537A3 (fr
Inventor
Otmar Dr. Palzer
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag 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 SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0775537A2 publication Critical patent/EP0775537A2/fr
Publication of EP0775537A3 publication Critical patent/EP0775537A3/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Withdrawn legal-status Critical Current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
    • B21B37/48—Tension control; Compression control
    • B21B37/50—Tension control; Compression control by looper 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
    • B21B37/16—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
    • 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
    • B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel

Definitions

  • the invention relates to a method for cross-sectional control of rolling stock via a rolling stock loop control, in particular between roll stands in profile rolling mills.
  • the sling control limits the two horizontal or vertical end positions of the sling and keeps them as far as possible in the middle of the sling table.
  • the influences occurring during the rolling process are taken into account, such as changes in cross-section, for example as a result of changing occupation of the previous multi-core stands, the temperature of the rolling stock, etc., which are translated into changes in speed and length and thus in changes in the loop size.
  • the control works on the basis of photoelectric scanning of the rolling stock and, depending on the direction of a cascade control, acts on the speed of the preceding or following stand.
  • the invention is therefore based on the object of providing a method of the type mentioned at the outset with which the disadvantages described can be avoided and which enables improved cross-sectional control without complex portions of measurement and control technology and mechanical devices.
  • the invention is based on the finding that there is a functional relationship between the loop height and the horizontal forces (tension / compression) of a rolled stock loop, as shown in FIG. 1.
  • Each loop height corresponds to a certain horizontal force in the rolling stock, which has a decisive effect on the rolling stock dimensions to be achieved during rolling.
  • the relationship between the horizontal forces and the rolling stock dimensions is shown in FIG. 2 for the round or angular profile. It follows from this that the width of the rolling stock in particular is strongly dependent on the horizontal forces and the profile height or thickness changes only slightly under the influence of the horizontal forces. As is known, the profile height during rolling varies only slightly thanks to the relatively high rigidity, while the width varies considerably over the length of the rolled material.
  • the function of the cross-sectional control according to the invention is surprisingly simple. If the measured rolling stock width moves out of the permissible tolerance range, the horizontal force in the rolling stock is influenced via the loop height in such a way that the rolling stock width is again brought into the permissible tolerance range. If, for example, the rolling stock that is running out is too large, the loop height is corrected towards zero via the loop control, and vice versa. Even though the profile height or rolling stock thickness remains almost constant due to the relatively high rigidity of the rolling stand, the rolling stock height is nevertheless continuously monitored and evaluated. If the rolling stock height moves out of the permissible tolerance range while the width is being corrected when entering the road, the width control is temporarily interrupted until the rolling stock thickness has been brought back into the permissible tolerance range due to technological influences. The width control is then continued. After the rolling stock has run out, the roll gap is corrected accordingly in order to create more space for the width control at the next billet.
  • width control in addition to the standard devices for realizing a loop control, preferably in the form of a gravity loop, for which essentially only a foldable channel with a scanner is required, only a commercially available measuring device for measuring the width or thickness is required of the rolling stock.
  • a terminal with monitor and keyboard can be provided for an operator for monitoring and parameterization.
  • a preferred embodiment of the invention provides that the width control of the rolling stock is superimposed by an underload correction of the roll settings of the roll stands involved in the cross-section control via the loop control.
  • a two-dimensional control can thus be achieved and it can be avoided that the profile height is only corrected during the roll break between two billets by the roll adjustment for the next billet in order to be able to make a necessary width correction.
  • deviations in the width of the rolled or billet that has just been rolled can be fully compensated for, so that even this and not the next billet is within the permissible tolerance range.
  • the profile height control superimposed on the width control consequently results in a two-dimensional cross-sectional control.
  • the profile height is also continuously controlled, i.e. corrected under load.
  • the two-dimensional cross-sectional control As in the case of the one-dimensional cross-sectional control, two loops can be provided for the cross-sectional control in the case of larger fluctuations in the rolling stock dimensions, the two-dimensional cross-sectional control for each additional loop an additional roll stand that can be adjusted under load is required.
  • the one-dimensional cross-sectional control ie only width control, in contrast to the conventional controls, no underload adjustments are required.
  • 3 and 4 of a finishing or intermediate line 1, 100 of a fine and wire line are two successive lines, each only by an upper and a lower horizontal roll 2 or 3 symbolically marked roll stands WG n-1 or WG n are shown.
  • Motors 5, which are connected to a pulse generator 6, are assigned to the roll stands WG n-1 and WG n via an intermediate gear 4.
  • the height h of a rolled material loop 7 constructed between the two roll stands WG n-1 and WG n is determined by a scanner 8 and passed on to a control unit 9 shown as a black box.
  • Behind the last roll stand WG n in the rolling direction 10 (cf. the arrow) is a measuring device 11 or 111 (cf. FIG.
  • the rolling stock width determined by means of the cross-sectional measuring device 11 comes out of the permissible tolerance range
  • the height h of the rolling stock loop 7 monitored by the scanner 8 is changed via the automatic control unit 9 and thus the horizontal force in the rolling stock is influenced such that the Rolled material width again reaches the permissible tolerance range.
  • the rolling stock thickness or height H is continuously monitored and evaluated at the same time. If the rolling stock height H deviates from the permissible tolerance range during the width correction, the width control is interrupted in a one-dimensional control until the rolling stock height H returns to the permissible range.
  • the finishing and intermediate line 100 according to FIG. 4 differs from the finishing and intermediate line shown in FIG. 3 in that the last rolling stand WG n in the rolling direction 10 has an underload setting 15 (adjusting spindle which can be acted upon by a motor 14 connected to the automatic control unit 9) ) assigned.
  • an underload setting 15 adjusting spindle which can be acted upon by a motor 14 connected to the automatic control unit 9) assigned.
  • the underload correction of the roll adjustment which is superimposed on the width control, and the two-dimensional control thus achieved make it possible to keep the currently rolled rolling stock in the permissible tolerance range in the event of width deviations, so that the correction does not start with the following rolling stock.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
EP96118338A 1995-11-23 1996-11-15 Procédé pour la régulation de la section transversale d'un produit laminé Withdrawn EP0775537A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19543605 1995-11-23
DE19543605A DE19543605A1 (de) 1995-11-23 1995-11-23 Verfahren zur Querschnittsregelung von Walzgut

Publications (2)

Publication Number Publication Date
EP0775537A2 true EP0775537A2 (fr) 1997-05-28
EP0775537A3 EP0775537A3 (fr) 1998-04-22

Family

ID=7778169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96118338A Withdrawn EP0775537A3 (fr) 1995-11-23 1996-11-15 Procédé pour la régulation de la section transversale d'un produit laminé

Country Status (3)

Country Link
US (1) US5794473B1 (fr)
EP (1) EP0775537A3 (fr)
DE (1) DE19543605A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000002677A1 (fr) * 1998-07-10 2000-01-20 Abb Ab Procede et dispositif de commande de laminoir

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10294379D2 (de) * 2001-09-25 2004-09-09 Karl Fuhr Gmbh & Co Kg Maschin Verfahren und Vorrichtung für die Herstellung metallener Flachbandleiter
AT500765B1 (de) * 2002-09-04 2009-03-15 Voest Alpine Ind Anlagen Verfahren zur reduzierung der bandbreitenänderung
DE102005036184A1 (de) * 2004-12-07 2006-06-08 Sms Meer Gmbh Verfahren zur Regelung des Querschnitts von aus einer Drahtwalzstraße austretenden Drähten und Drahtwalzstraße
DE102007059185B4 (de) * 2007-01-15 2011-04-07 Sms Meer Gmbh Verfahren und Vorrichtung zur Messung der Geradheit von Langprodukten
AT509831B1 (de) 2010-04-30 2012-03-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zur minimierung des bandzugs eines walzgutes
US9630228B2 (en) * 2012-01-19 2017-04-25 Primetals Technologies USA LLC Dual cascade control system for a long rolling mill

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US3526113A (en) * 1968-04-12 1970-09-01 Morgan Construction Co Automatic shape control system for bar mill
US3763678A (en) * 1972-06-30 1973-10-09 Gen Electric Apparatus for automatic control of product fill dimension
JPS5545585A (en) * 1978-09-27 1980-03-31 Mitsubishi Electric Corp Tension control device of rolling mill
JPS5788908A (en) * 1980-11-19 1982-06-03 Sumitomo Metal Ind Ltd Method for controlling product dimension of wire rod finishing block mill
SU1097403A1 (ru) * 1983-03-11 1984-06-15 Криворожский Металлургический Завод "Криворожсталь" Им.В.И.Ленина Система автоматического регулировани нат жени и размеров полосы
SU1094634A1 (ru) * 1983-04-18 1984-05-30 Институт черной металлургии Устройство дл регулировани нат жени проката
JPH0655322B2 (ja) * 1983-12-16 1994-07-27 株式会社神戸製鋼所 条材の圧延方法
SU1186308A1 (ru) * 1984-06-25 1985-10-23 Криворожский металлургический комбинат "Криворожсталь" им.В.И.Ленина Система стабилизации размеров проката
JPS62289307A (ja) * 1986-06-06 1987-12-16 Kawasaki Steel Corp 圧延機における板幅制御方法
JPH01278905A (ja) * 1988-04-28 1989-11-09 Toshiba Corp 連続圧延機の張力制御装置
US4909055A (en) * 1988-07-11 1990-03-20 Blazevic David T Apparatus and method for dynamic high tension rolling in hot strip mills
DE58909734D1 (de) * 1988-12-22 1996-10-24 Preussag Stahl Ag Verfahren und Vorrichtung zum Warmbandwalzen
JPH02235511A (ja) * 1989-03-08 1990-09-18 Sumitomo Metal Ind Ltd 熱間仕上圧延時の板幅制御方法
JPH03146210A (ja) * 1989-11-02 1991-06-21 Toshiba Corp Ｈ形鋼圧延設備の張力制御装置
JPH0422505A (ja) * 1990-05-18 1992-01-27 Toshiba Corp 型鋼の自動板厚制御装置
JPH05146811A (ja) * 1991-11-28 1993-06-15 Kawasaki Steel Corp 熱間連続仕上圧延機のルーパレス圧延方法
JPH05177226A (ja) * 1992-01-08 1993-07-20 Toshiba Corp Ｈ形鋼の形状制御装置
JPH06285521A (ja) * 1993-04-05 1994-10-11 Nippon Steel Corp 棒線材の寸法偏差測定方法及びその装置
DE4407981A1 (de) * 1994-03-10 1995-09-14 Schloemann Siemag Ag Verfahren und Vorrichtung zur geregelten Bildung von Walzgut-Schlingen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000002677A1 (fr) * 1998-07-10 2000-01-20 Abb Ab Procede et dispositif de commande de laminoir
US6519990B1 (en) 1998-07-10 2003-02-18 Abb Ab Method and a device for controlling a rolling mill

Also Published As

Publication number Publication date
US5794473A (en) 1998-08-18
EP0775537A3 (fr) 1998-04-22
DE19543605A1 (de) 1997-05-28
US5794473B1 (en) 2000-08-29

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