EP0181785A1 - Méthode et procédé de contrôle du profilé d'une bande métallique - Google Patents

Méthode et procédé de contrôle du profilé d'une bande métallique Download PDF

Info

Publication number
EP0181785A1
EP0181785A1 EP85308307A EP85308307A EP0181785A1 EP 0181785 A1 EP0181785 A1 EP 0181785A1 EP 85308307 A EP85308307 A EP 85308307A EP 85308307 A EP85308307 A EP 85308307A EP 0181785 A1 EP0181785 A1 EP 0181785A1
Authority
EP
European Patent Office
Prior art keywords
shape
rolls
strip
controlling
cooling fluid
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Withdrawn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
EP85308307A
Other languages
German (de)
English (en)
Inventor
Dirk De Mol
Graham Shaw
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.)
Honeywell Measurex Corp
Original Assignee
Measurex Corp
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 Measurex Corp filed Critical Measurex Corp
Publication of EP0181785A1 publication Critical patent/EP0181785A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
    • B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls

Definitions

  • the invention relates to a system for controlling the shape of a strip metal which is being manufactured.
  • the shape of a strip of metal is defined in the art as the cross-directional stress profile of the sheet while the sheet is under tension.
  • the shape of the strip can be changed. It is important that after production the shape of the strip is as nearly perfectly flat as possible, i.e. minimal cross-directional variations in stress. Various methods are known for accomplishing this.
  • U. S. patent 4,262,511 teaches a system for controlling the shape of sheet metal.
  • a metal sheet is compressed between a pair of driven shaping rolls, or work rolls.
  • the sheet is measured by a shapemeter, and deviations from a predetermined target shape are corrected.
  • One of the methods of correction is to spray cooling liquid onto the work rolls in the area in which the rolls are determined to be applying excessive force to the sheet. Thus the rolls are cooled so that they contract and consequently apply less force.
  • an incremental increase or decrease in coolant spray is applied as long as the shape, as measured by the shapemeter, is outside specified limits. Then, when the shape is within limits, the sprays are returned to their normal level.
  • Sheet is defined as strip which is greater in thickness than 0.006 inch, and foil is a strip of less than 0.006 inch thickness.
  • An object of the present invention is to provide accurate shape control.
  • Another object is to control a foil producing rolling mill.
  • FIG. 1 schematically illustrates a rolling mill utilizing the present embodiment.
  • a roll 10 of metal is horizontally disposed adjacent a pair of cylindrical work rolls 12, and a re-wind 16 is located to the right of the rolls 12.
  • a cylindrical back-up roll 18 is located above the upper work roll 12, and a second back up roll 18 is located below the lower work roll 12.
  • the re-wind roll 16 is coupled to a drive means, not shown, to drive the roll in a clockwise direction to wrap the metal into a coil.
  • the work rolls 12 are on bearings, are driven to rotate by drive means, not shown, and are spaced apart a predetermined, controllable distance.
  • the back-up rolls 18 are mounted on bearings so they are free to rotate, and the back-up rolls 18 are also mounted so that they can controllably apply pressure to force the work rolls 12 toward one another. Normally means are provided to control the pressure so applied; however such control means do not form part of the present invention and therefore will not be discussed herein.
  • a shapemeter 22 is mounted to contact the strip 20 after the strip leaves the work rolls 12.
  • the shapemeter 22 is generally cylindrical and is capable of measuring the shape of the sheet 20 in a plurality of zones across the sheet.
  • the shapemeter 22 includes a plurality of transducers to convert the measured shape in each zone to electrical signals and transmit the signals to a control unit 24.
  • the control unit 24 includes a computer to receive the signals and perform computations thereupon.
  • --Two spray bars 26 are located adjacent the two work rolls 12. Each shape bar 26 extends the length of the adjacent work roll 12 and includes a plurality of spray nozzles, as illustrated in- Figure 2.
  • the nozzles are located in two horizontal rows adjacent one another, and one row comprises nozzles each of which is capable of delivering 50 % of the flow of fluid with respect to each nozzle of the second row.
  • the nozzles are grouped in pairs, comprising one small nozzle 30 and one large nozzle 32.
  • the nozzles of each pair are directed to spray fluid on the same zone of a work roll 12. It should be understood that other configurations of the spray nozzles can be used. For example, in some cases there may be three horizontal rows of nozzles.
  • the spray bars 26 include valves, not shown, coupled one to each nozzle 30 and 32 and controllable by signals from the control unit 24.
  • Generally spray bars are constructed by the manufacturer so that the spray from a nozzle is either fully on or fully off but not variable between the full on and off positions.
  • one has the option of providing either no flow, 33% of total flow, 66% of total flow or 100% of total flow, by opening none, the small nozzle 30, the large nozzle 32 or both nozzles.
  • the control process according to the present embodiment is accomplished in the following way. For each zone across the width of the strip the shape is measured by the shapemeter 22. When it is desired to increase or decrease the spacing between the rolls 12 in a particular zone the corresponding spray nozzles are opened or closed as necessary.
  • the sprays are operated in cycles with each cycle being initiated a predetermined time after the initiation of the immediately preceding cycle. During each cycle a spray is on for a controllable period of time and off for the remainder of the cycle. This is called duty cycling. For example, if the cycle time is about ten seconds,.. which is a cycle time we have found preferable in many circumstances, and it is desired to apply 10% cooling to a zone, then the small nozzle 30 is opened 3.3 seconds (i.e.
  • the operating program for each nozzle be designed so that when the range of total required delivery changes, the nozzle is changed from being duty cycled to continuously off or on, but that the nozzle never changes from continuously off to continuously on or vice versa.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
EP85308307A 1984-11-14 1985-11-14 Méthode et procédé de contrôle du profilé d'une bande métallique Withdrawn EP0181785A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67127084A 1984-11-14 1984-11-14
US671270 1984-11-14

Publications (1)

Publication Number Publication Date
EP0181785A1 true EP0181785A1 (fr) 1986-05-21

Family

ID=24693812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85308307A Withdrawn EP0181785A1 (fr) 1984-11-14 1985-11-14 Méthode et procédé de contrôle du profilé d'une bande métallique

Country Status (2)

Country Link
EP (1) EP0181785A1 (fr)
JP (1) JPS61165214A (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049425A2 (fr) * 1980-10-04 1982-04-14 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif pour laminer une bande sans tension
NL8204615A (nl) * 1982-11-29 1984-06-18 Hoogovens Groep Bv Werkwijze en koelinrichting voor het koelen van walsen van een walserij voor metaalband.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049425A2 (fr) * 1980-10-04 1982-04-14 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif pour laminer une bande sans tension
NL8204615A (nl) * 1982-11-29 1984-06-18 Hoogovens Groep Bv Werkwijze en koelinrichting voor het koelen van walsen van een walserij voor metaalband.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, vol. 6, no. 220 (M-169) [1098], 5th November 1982; & JP - A - 57 124 511 (KOBE SEIKOSHO K.K.) 03-08-1982 *

Also Published As

Publication number Publication date
JPS61165214A (ja) 1986-07-25

Similar Documents

Publication Publication Date Title
US4274273A (en) Temperature control in hot strip mill
JPS59197309A (ja) 高いプロフィル品質と平担度品質とを備えたストリップを造るための方法およびストリップタンデム圧延ライン
CN111482465A (zh) 一种板带材的板形控制方法和装置
CN102172637B (zh) 基于测厚仪分段监控的高精度自动厚度控制方法及其设备
GB2100470A (en) Working strip material
US4700557A (en) System and process for controlling the shape of a strip of metal
CN112718880A (zh) 一种棒线材加热炉出钢温度控制系统及其运行方法
US5873959A (en) Adaptive control for reheat furnace
EP0181785A1 (fr) Méthode et procédé de contrôle du profilé d'une bande métallique
CN116689507A (zh) 一种减小热轧带钢翘曲度的控制方法
EP2828011A1 (fr) Laminage thermomécanique d'une plaque d'aluminium
EP0543014B1 (fr) Laminoir a six etages
JP7200859B2 (ja) 圧延形状制御装置
EP1481742B1 (fr) Ordinateur de commande et procédé de détermination assistée par ordinateur pour le control de la planéité et du profile pour une cage de laminoir
WO2000054900A1 (fr) Reglage de planeite permettant d'obtenir une bande a froid plane
JP2979974B2 (ja) 冷延鋼板の機械特性制御方法
JP2990070B2 (ja) 板圧延機のロールクーラント制御方法およびこの制御方法を用いた電子電気機器用材料の製造方法
JPH067824A (ja) 圧延機の板厚制御方法
RU2312721C2 (ru) Способ эксплуатации рабочего валка стана холодной прокатки
JPS5835007A (ja) 板圧延処理設備における板クラウン，平坦度制御装置
SU980891A1 (ru) Система совместного регулировани толщины и профил полосы в клети непрерывного прокатного стана
JPH02155506A (ja) 熱間圧延材の板厚制御方法
CN116761682A (zh) 冷轧设备的应用和用于受调节地冷轧铝箔的方法
DE1752297B2 (de) Einrichtung zum selbsttaetigen aufrechterhalten einer vorgegebenen temperatur in bewegtem walzgut
SU1346285A1 (ru) Способ охлаждени валков листопрокатного стана

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT

17P Request for examination filed

Effective date: 19860710

17Q First examination report despatched

Effective date: 19870918

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19880531

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DE MOL, DIRK

Inventor name: SHAW, GRAHAM