[go: up one dir, main page]

WO2000002678A1 - Procede et dispositif de regulation des dimensions de fin d'ebauche dans un laminoir - Google Patents

Procede et dispositif de regulation des dimensions de fin d'ebauche dans un laminoir Download PDF

Info

Publication number
WO2000002678A1
WO2000002678A1 PCT/SE1999/001248 SE9901248W WO0002678A1 WO 2000002678 A1 WO2000002678 A1 WO 2000002678A1 SE 9901248 W SE9901248 W SE 9901248W WO 0002678 A1 WO0002678 A1 WO 0002678A1
Authority
WO
WIPO (PCT)
Prior art keywords
stand
tail
rolls
mill
rolled material
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.)
Ceased
Application number
PCT/SE1999/001248
Other languages
English (en)
Inventor
Mats Olsson
Dag Sollander
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.)
ABB AB
Original Assignee
ABB AB
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 ABB AB filed Critical ABB AB
Priority to JP2000558928A priority Critical patent/JP2002520160A/ja
Priority to DE69905578T priority patent/DE69905578D1/de
Priority to EP99933449A priority patent/EP1097008B1/fr
Priority to AU49502/99A priority patent/AU4950299A/en
Priority to AT99933449T priority patent/ATE233134T1/de
Publication of WO2000002678A1 publication Critical patent/WO2000002678A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B21B37/52—Tension control; Compression control by 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
    • B21B37/72—Rear end control; Front end control
    • 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
    • B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a 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
    • B21B2261/08—Diameter
    • 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
    • B21B2265/04—Front or inlet tension
    • 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
    • B21B2265/06—Interstand tension
    • 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
    • B21B2265/08—Back or outlet tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/12—End of product
    • B21B2273/16—Tail or rear end

Definitions

  • the present invention is related to method for controlling the dimensions of an elongated material rolled in a rolling mill comprising at least three mill stands arranged after each other, wherein a first stand is arranged upstream of a second stand, which is arranged upstream of a third stand, each of said stands comprising two spaced rolls, said elongated material being fed between the rolls of each stand by rotating the rolls, wherein an interstand tension is controlled between at least two of said stands.
  • the invention is a control method for continuous and semi-continuous rolling mills for the production of profiles other than sheet or strip, that is, for hot rolling rod or bar profile of various types. More particularly the invention relates to dimensional control over the tail portion of the rolled material.
  • the present invention is further related to a device for controlling the dimensions of an elongated material rolled in a rolling mill.
  • an alternating series of rolls are typically arranged in a train of mill stands grouped in rolling pairs.
  • a rolling mill is usually arranged in three sections, with a roughing, intermediate and finishing section.
  • Each pair of mill stands in a section usually consists of a first mill stand with rolls set, for example for horizontal rolling thus changing the vertical dimension, and the rolls of a second stand arranged perpendicular to the first stand, vertical in this example.
  • the rolls of each mill stand have a groove shaped in a specific profile. The depth of the groove and the gap between the rolls determines the resultant height of the rolled material.
  • the width dimension As the rolled material is deformed in the height dimension it also spreads out in a direction perpendicular to the height, the width dimension.
  • the material spreads out in width, preferably to a specified degree. If the material spreads out beyond the contours of the groove, it is called overfill, and if it spreads less than groove contour it is called underfill.
  • the term width is used hereafter to describe a diameter dimension of the rolled material that is parallel to the axis of the rolls of a mill stand.
  • the separation of the rolls in each mill stand and the relative speeds in each mill stand necessary to produce the right dimensions on the finished product are specified in a schedule before rolling starts.
  • the dimensions of the rolled material may be changed in two ways, by changing the separation of the rolls, the roll gap, so deforming the rolled material to a greater or lesser extent.
  • the other principal method is by adjusting the tension in the rolled material.
  • a tension in the rolled material between any two stands is described hereafter as an interstand tension.
  • the physical dimensions of the rolled material, in particular the width, may be affected by changing the interstand tension.
  • the interstand tension is changed by adjusting the speed of the rolls of a one mill stand relative to the rolls of a second mill stand.
  • the interstand tension in rolled material moving downstream towards a point of reference is known as back tension.
  • Interstand tension in rolled material moving downstream away from a point of reference is called front tension.
  • Methods are known for manipulating rolled material which use front tension and methods which use back tension. Adjustments to back tension are more commonly used as a control method because it is up to three times more effective in affecting the width dimension of rolled material than front tension. It is known for example from GB 2,009,974 to measure back tension and use that measurement to control roll speeds.
  • the object of the invention is to control the width of the tail of the rolled material.
  • a further object of the invention is to improve control over width of the tail of the rolled material in any section of the rolling mill.
  • the present invention is a method for controlling the width of a tail of the rolled material between any pair of mill stands in any part of a rolling mill Control is switched to front tension for each successive pair of mill stands as the tail travels through a rolling mill
  • the present invention extends control over the width of the rolled material to the tail Adjustments to increase or decrease interstand tension for the purpose of adjusting width of the tail of the rolled material by means of front tension may be made between any pair of mill stands using this method
  • control method reduces the amount of substandard rolled material in each rolled billet
  • a further advantage is that it may be applied to any pair of mill stands with the sole exception of the final pair of stands of a finishing section
  • this control method may be applied in any section of the mill, the roughing section, intermediate section or the finishing section
  • this method may be easily refitted to existing rolling mills because it requires measurement and control equipment only, and new mill stands with automatic roll gap separation for example are not required
  • control throughout all sections of the mill means that smaller, fewer corrections required in the finishing section It also means reduced wear of the rolls and guide rails due to rolled material that is more consistent in its dimensions
  • Fig 1 shows schematically a tail of a rolled material before passing through a first mill stand according to the invention.
  • Fig 2 shows schematically the tail of the rolled mate ⁇ al after it has left a first mill stand according to the invention.
  • Fig 3 is a block diagram of the device for controlling the dimensions of an elongated material rolled in a rolling mill.
  • width is used hereafter to describe a diameter of a rolled material that is parallel to the axis of the rolls of a mill stand.
  • Figure 1 and 2 illustrates a part of the rolling mill comprising three mill stands 1 , 2, 3. Each stand comprises two spaced, parallell rolls 4, 5. An elongated material 6 is fed between the rolls. A tail of the material has the reference numeral 7. The arrow 14 indicates the feeding direction.
  • Figure 3 illustrates a block diagram of a device according to the invention for controlling the dimensions of the elongated material.
  • Means 8, 9, 10 are arranged for controlling the rotational speed of the rolls in each stand. These rotation means 8, 9, 10 are preferably formed by electric motors.
  • a means 11 is arranged for controlling interstand tension between at least two of said stands.
  • a means 12 is arranged for detecting a tail of the rolled material leaving said first stand. Said detection means 12 is connected to said interstand control means 11.
  • Said control means 11 is arranged to, after having received a detection signal from the detection means, switch off a back tension control between the first 1 and the second stand 2 for the period while the tail 7 travels between the first stand and the second stand, and to switch on a front tension control between the second 2 and the third stand 3, arranged downstream of said second stand, for the period while the tail travels between the first stand and the second stand.
  • Means 13 is arranged for measuring the width of the material between said second stand 2 and said third stand 3.
  • the measuring means is connected to said interstand tension control means 1 1 in order to adjust the interstand tension based on the measured width.
  • the measuring means 13 are arranged for substantially continuously determining the width of the rolled material after one or more mill stands.
  • the means 8, 9, 10 are arranged for independently controlling the speed of the rolls of each mill stand.
  • the means 12 are arranged for detecting tail position in any mill stand.
  • a control method according to the invention is carried out in a rolling mill that is equipped with measuring means for substantially continuously measuring and storing the width after a first mill stand and after a second mill stand of any pair of mill stands.
  • the speed of each mill stand is independently controlled via a cascade system.
  • the mill stand motors are also arranged with means for measuring the motor current in each mill stand, which is used to detect when a tail of rolled material leaves the roll gap of a mill stand. This is possible because motor current changes as the load in the mill stand changes due to the exit of the tail of the rolled material. Also other means are of course applicable for performing said detection, such as optical means and sensors.
  • -a signal is sent to the second mill stand, switching off back tension control for the period while the tail travels between the first mill stand and the second mill stand
  • -a signal is sent to the second mill stand switching on front tension control for the period that the tail travels between the first mill stand and the second mill stand.
  • Measurements of the height and width of the rolled material is preferably carried out using U-gauges manufactured by ABB Industrial Systems AB. Within the scope of the invention it is also possible to use optical equipment such as lasers or cameras to measure the diameters of the rolled material, or a combination of optical methods and mechanical sensors.

Landscapes

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

Abstract

La présente invention concerne un procédé de contrôle des dimensions d'un matériau de forme allongée (6) passé dans un laminoir comprenant au moins trois cages (1,2,3) placées les unes à la suite des autres, dans lequel une première cage (1) est placée en amont d'une deuxième cage (2), elle même en amont d'une troisième cage (3). Chacune desdites cages comprend deux rouleaux espacés (4,5). Ledit matériau de forme allongée est introduit entre les rouleaux de chaque cage par rotation des rouleaux, avec une régulation de tension entre au moins deux desdites cages. Une fin (7) d'ébauche (6) est détectée en quittant la première cage, après quoi, une régulation de tension arrière entre les première (1) et seconde (2) cages est annulée durant le passage de la fin (7) d'ébauche entre les première et seconde cages, et une régulation de tension de tête entre les seconde (2) et troisième (3) cages est activée durant le passage de la fin d'ébauche entre les première et seconde cages.
PCT/SE1999/001248 1998-07-10 1999-07-09 Procede et dispositif de regulation des dimensions de fin d'ebauche dans un laminoir Ceased WO2000002678A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2000558928A JP2002520160A (ja) 1998-07-10 1999-07-09 圧延機でテール寸法を制御するための方法および装置
DE69905578T DE69905578D1 (de) 1998-07-10 1999-07-09 Verfahren und vorrichtung zur reglung der abmessungen eines walzgutendes in einem walzwerk
EP99933449A EP1097008B1 (fr) 1998-07-10 1999-07-09 Procede et dispositif de regulation des dimensions de fin d'ebauche dans un laminoir
AU49502/99A AU4950299A (en) 1998-07-10 1999-07-09 A method and a device for controlling tail dimensions in a rolling mill
AT99933449T ATE233134T1 (de) 1998-07-10 1999-07-09 Verfahren und vorrichtung zur reglung der abmessungen eines walzgutendes in einem walzwerk

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9802493A SE513923C2 (sv) 1998-07-10 1998-07-10 Förfarande och anordning för styrning av svansdimensionerna i ett valsverk
SE9802493-8 1998-07-10

Publications (1)

Publication Number Publication Date
WO2000002678A1 true WO2000002678A1 (fr) 2000-01-20

Family

ID=20412046

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1999/001248 Ceased WO2000002678A1 (fr) 1998-07-10 1999-07-09 Procede et dispositif de regulation des dimensions de fin d'ebauche dans un laminoir

Country Status (7)

Country Link
EP (1) EP1097008B1 (fr)
JP (1) JP2002520160A (fr)
AT (1) ATE233134T1 (fr)
AU (1) AU4950299A (fr)
DE (1) DE69905578D1 (fr)
SE (1) SE513923C2 (fr)
WO (1) WO2000002678A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116493419A (zh) * 2023-06-27 2023-07-28 山西建龙实业有限公司 一种热轧钢筋尾部轧制微张力柔性控制方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6167736B1 (en) 1999-07-07 2001-01-02 Morgan Construction Company Tension control system and method for reducing front end and tail end overfill of a continuously hot rolled product
DE102006059709A1 (de) * 2006-12-18 2008-06-19 Siemens Ag Walzverfahren für ein Band
KR101435038B1 (ko) * 2012-10-29 2014-08-27 현대제철 주식회사 소재 압연장치
DE102016217202B4 (de) * 2016-09-09 2024-03-28 Kocks Technik Gmbh & Co Kg Regelung des Betriebs einer Walzstraße
CN115138695A (zh) * 2021-03-31 2022-10-04 宝山钢铁股份有限公司 一种热连轧机上剪切带头带尾现象的检测方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU810319A1 (ru) * 1979-04-04 1981-03-07 Колпинское Отделение Всесоюзногонаучно-Исследовательского Ипроектно-Конструкторского Институтаметаллургического Машиностроения Способ регулировани межклетевыхНАТ жЕНий
SU1286310A2 (ru) * 1985-04-08 1987-01-30 Производственное объединение "Уралмаш" Устройство дл регулировани толщины полосы на концах холоднокатаных рулонов
SU1297959A1 (ru) * 1985-11-10 1987-03-23 Государственный Проектный И Проектно-Конструкторский Институт "Электротяжхимпроект" Система автоматического управлени поштучным редуцированием с нат жением на многоклетевом стане с индивидуальным электроприводом
RU1794517C (ru) * 1990-12-25 1993-02-15 Донецкий научно-исследовательский институт черной металлургии Устройство дл регулировани размеров концов гор чекатаной полосы

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU810319A1 (ru) * 1979-04-04 1981-03-07 Колпинское Отделение Всесоюзногонаучно-Исследовательского Ипроектно-Конструкторского Институтаметаллургического Машиностроения Способ регулировани межклетевыхНАТ жЕНий
SU1286310A2 (ru) * 1985-04-08 1987-01-30 Производственное объединение "Уралмаш" Устройство дл регулировани толщины полосы на концах холоднокатаных рулонов
SU1297959A1 (ru) * 1985-11-10 1987-03-23 Государственный Проектный И Проектно-Конструкторский Институт "Электротяжхимпроект" Система автоматического управлени поштучным редуцированием с нат жением на многоклетевом стане с индивидуальным электроприводом
RU1794517C (ru) * 1990-12-25 1993-02-15 Донецкий научно-исследовательский институт черной металлургии Устройство дл регулировани размеров концов гор чекатаной полосы

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 8149, Derwent World Patents Index; AN 1981-90650D/49, XP002940757 *
DATABASE WPI Week 8735, Derwent World Patents Index; AN 1987-249353/35, XP002940755 *
DATABASE WPI Week 8743, Derwent World Patents Index; AN 1987-304911/43, XP002940754 *
DATABASE WPI Week 9412, Derwent World Patents Index; AN 1994-99733/12, XP002940756 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116493419A (zh) * 2023-06-27 2023-07-28 山西建龙实业有限公司 一种热轧钢筋尾部轧制微张力柔性控制方法

Also Published As

Publication number Publication date
SE9802493L (sv) 2000-03-10
EP1097008A1 (fr) 2001-05-09
SE9802493D0 (sv) 1998-07-10
AU4950299A (en) 2000-02-01
SE513923C2 (sv) 2000-11-27
EP1097008B1 (fr) 2003-02-26
JP2002520160A (ja) 2002-07-09
ATE233134T1 (de) 2003-03-15
DE69905578D1 (de) 2003-04-03

Similar Documents

Publication Publication Date Title
EP0294807B1 (fr) Installation de laminoir et procédé de laminage pour un feuillard coulé continu
US5174142A (en) Method and apparatus for guiding a rod to a slitter station
CN113083899A (zh) 一种新型的棒材倍尺分段控制方法
US6167736B1 (en) Tension control system and method for reducing front end and tail end overfill of a continuously hot rolled product
KR101633573B1 (ko) 연속하는 두 개의 스트랜드 압연 플랜트를 제어하는 방법
AU632719B2 (en) Method of controlling edge drop in cold rolling of steel
US5791182A (en) Method to control between rolling stands the drawing of the rolled stock and relative device
EP1097008B1 (fr) Procede et dispositif de regulation des dimensions de fin d'ebauche dans un laminoir
US5305624A (en) Sizing-stand group
EP0200396B1 (fr) Laminoirs
US6519990B1 (en) Method and a device for controlling a rolling mill
EP1252942A1 (fr) Système de commande de la tension pour laminoirs à fils et barres
EP1097009B1 (fr) Procede et dispositif pour le controle dimensionnel d'un materiau allonge passant dans un laminoir
RU2197349C2 (ru) Способ бокового направления полосы при ее безостановочном перемещении рольгангом преимущественно от клети к моталке для дальнейшей смотки в рулон
SU1692773A1 (ru) Способ определени момента включени летучих ножниц на рез концевых участков раската широкополосового стана гор чей прокатки и устройство дл его осуществлени
JP2973859B2 (ja) Ｈ形鋼のフランジ幅制御方法
JPH024365B2 (fr)
JPH0323241B2 (fr)
JPH06304636A (ja) 鍛接鋼管の自動肉厚制御方法

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AT AU AZ BA BB BG BR BY CA CH CN CU CZ CZ DE DE DK DK EE EE ES FI FI GB GE GH GM HR HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SL SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
ENP Entry into the national phase

Ref country code: JP

Ref document number: 2000 558928

Kind code of ref document: A

Format of ref document f/p: F

WWE Wipo information: entry into national phase

Ref document number: 1999933449

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 09743473

Country of ref document: US

WWP Wipo information: published in national office

Ref document number: 1999933449

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWG Wipo information: grant in national office

Ref document number: 1999933449

Country of ref document: EP