EP0136921A2 - Walzwerk - Google Patents

Walzwerk Download PDF

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Publication number
EP0136921A2
EP0136921A2 EP84306770A EP84306770A EP0136921A2 EP 0136921 A2 EP0136921 A2 EP 0136921A2 EP 84306770 A EP84306770 A EP 84306770A EP 84306770 A EP84306770 A EP 84306770A EP 0136921 A2 EP0136921 A2 EP 0136921A2
Authority
EP
European Patent Office
Prior art keywords
strip
rolling mill
sensor
coolant
shape
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Withdrawn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
EP84306770A
Other languages
English (en)
French (fr)
Other versions
EP0136921A3 (de
Inventor
Robert William Gronbech
Stuart Stubbs
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.)
Davy Mckee Sheffield Ltd
Original Assignee
Davy Mckee Sheffield Ltd
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 Davy Mckee Sheffield Ltd filed Critical Davy Mckee Sheffield Ltd
Publication of EP0136921A2 publication Critical patent/EP0136921A2/de
Publication of EP0136921A3 publication Critical patent/EP0136921A3/de
Withdrawn legal-status Critical Current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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
    • 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
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems

Definitions

  • the present invention relates to rolling mills and is particularly concerned with rolling mills having means for giving an indication of the shape or flatness of metal strip rolled by a rolling mill.
  • the detecting means are of the type which gives an indication as to shape of the strip by detecting widthwise variations in tension in the strip, e.g. a "shapemeter" as described in British Patent Specification No. 1,160,112.
  • the present invention resides broadly in the detection of widthwise temperature variations of the strip prior to arrival at a shape sensor, so as to enable compensation to be effected.
  • a rolling mill for rolling metal strip comprises: a shape sensor for giving an indication of strip shape by detecting widthwise variations in tension in the strip, a temperature sensor upstream of the shape sensor for detecting widthwise temperature variations in the strip, and means for applying coolant to the strip for differentially cooling the strip across its width to reduce those temperature variations prior to arrival of the strip at the shape sensor.
  • the temperature sensor ray control the differential cooling automatically, or may give a visual indication by which the cooling may be controlled manually.
  • the widthwise temperature variations in the strip may be reduced or eliminated, before the strip reaches the shape sensor, which then gives a more accurate indication of shape.
  • FIG 1 the three final stands of the tandem mill are indicated at 12, 13 and 14, the strip 15 passing through the stands from right to left and being coiled on "a coiler 16.
  • a shape sensor 17 in the form of a "shapemeter" as described in the above mentioned British patent specification.
  • a temperature sensor 18 located below the strip and detecting the temperature of the strip at points spaced across its width.
  • the mill also has controllable means for cooling the strip, as indicated at 20 and 21 between stands 12 and 13 and 22 and 23 between stands 13 and 14.
  • Those means are coolant applicators which discharge a spray or curtain of coolant on the upper face of the strip 15, in the case of 20 and 22, and on the lower face, in the case of 21 and 23.
  • the cooling means 20, 21, 22 and 23 are connected to a control box 24 from where operation of the cooling means can be controlled.
  • the control box also receives output from the temperature sensor 18.
  • the control box may have an automatic control system for the cooling means or ray have a manual control for the cooling means.
  • the cooling means 20 - 23 are controlled in accordance with the indication given by temperature sensor 18 of the variation of strip temperature across the strip width, so that that temperature variation is reduced or eliminated and the strip passing over the shape sensor 17 has substantially uniform temperature across its width.
  • the control may be automatic, the indication given by sensor 18 being fed to a control system in control box 24 which issues control signals to the cooling means 20 - 23, or may be manual, in which case the sensor 18 gives an indication of the temperature profile of the strip, enabling the operator to adjust appropriately the cooling means 20 - 23 through control box 24.
  • the shape sensor 17 gives a substantially accurate profile of the shape, or flatness, of the strip across its width.
  • the majority of the cooling is done by the lower cooling means 21, 23 as the coolant projected on to the strip from below falls away after striking the strip whereas the coolant applied from above can remain on the strip and build up into a wave.
  • Such a wave of coolant is clearly undesirable and application of coolant to the top of the strip preferably'minimised.
  • FIG. 2 One of the lower cooling means 20, 21 is illustrated in Figure 2.
  • a row of spray nozzles 41 is arranged beneath the strip 15, across the width of the strip.
  • the spray nozzles 41 are mounted on a coolant manifold 42.
  • Each spray nozzle 41 has a supply conduit 43 which has an opening 44 in the manifold 42.
  • the opening 44 can be closed by pneumatically controlled diaphragm valve 45.
  • a flexible diaphragm 46 is mounted adjacent the opening 44.
  • Behind the diaphragm 46 is a chamber 47 which can be selectively connected to a source of pressurised air which will, when applied, sufficiently deform the diaphragm 46 to close the opening 44, see for example the second nozzle from the right in Figure 4.
  • coolant under pressure supplied in manifold 42 is applied via spray nozzles 41 to the underside of the strip 15.
  • the area of application, or field of spray, of coolant can be varied by selectively closing certain of the valves 45.
  • a row or array of spray nozzles which can have a supply of coolant selectively connected or disconnected not only can the field or area of coolant application be adjusted but two or more areas on the strip can be cooled separately.
  • the coolant applying means is beneath the strip, once coolant has been sprayed onto the strip, the coolant can fall away and not build up as might be the case when coolant is applied to the top of the strip.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP84306770A 1983-10-05 1984-10-04 Walzwerk Withdrawn EP0136921A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838326652A GB8326652D0 (en) 1983-10-05 1983-10-05 Rolling mill
GB8326652 1983-10-05

Publications (2)

Publication Number Publication Date
EP0136921A2 true EP0136921A2 (de) 1985-04-10
EP0136921A3 EP0136921A3 (de) 1985-09-25

Family

ID=10549715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84306770A Withdrawn EP0136921A3 (de) 1983-10-05 1984-10-04 Walzwerk

Country Status (3)

Country Link
EP (1) EP0136921A3 (de)
JP (1) JPS6096315A (de)
GB (1) GB8326652D0 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988009702A1 (en) * 1987-06-02 1988-12-15 Sulzer-Escher Wyss Ag Process and device for rolling metal strip
WO2000064605A1 (de) * 1999-04-26 2000-11-02 Sms Demag Aktiengesellschaft Walzverfahren für ein metallband und hiermit korrespondierende walzanordnung
WO2008145222A1 (de) 2007-05-30 2008-12-04 Sms Siemag Ag Vorrichtung zur beeinflussung der temperaturverteilung über der breite
EP2200762A1 (de) * 2007-08-28 2010-06-30 Air Products and Chemicals, Inc. Verfahren und vorrichtung zum abführen eines nicht linearen kryogensprühnebels über die breite eines walzgerüsts
EP2283887A1 (de) 2009-08-06 2011-02-16 Activaero GmbH Vorrichtung zur Flussbegrenzung bei niedrigen Differenzdrücken
US9016076B2 (en) 2007-08-28 2015-04-28 Air Products And Chemicals, Inc. Apparatus and method for controlling the temperature of a cryogen
US9200356B2 (en) 2006-08-28 2015-12-01 Air Products And Chemicals, Inc. Apparatus and method for regulating cryogenic spraying

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH089056B2 (ja) * 1991-08-26 1996-01-31 新日本製鐵株式会社 デスケーリング噴射方法
JP6737339B2 (ja) * 2016-09-23 2020-08-05 東芝三菱電機産業システム株式会社 エッジヒータ制御装置
JP7151265B2 (ja) * 2018-08-15 2022-10-12 日本製鉄株式会社 熱延鋼板の冷却装置、および熱延鋼板の冷却方法
DE102019104419A1 (de) * 2019-02-21 2020-08-27 Sms Group Gmbh Verfahren zur Einstellung verschiedener Kühlverläufe von Walzgut über der Bandbreite einer Kühlstrecke in einer Warmband- oder Grobblech-Straße
CN109909299B (zh) * 2019-03-06 2020-09-01 鞍钢股份有限公司 一种高强钢的轧制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1811238A1 (de) * 1968-11-27 1970-06-25 Inst Avtomatiki Einrichtung zur Regelung des Bandprofils des Walzgutes in Feinblech-Kaltwalzwerken
GB2017974A (en) * 1978-03-31 1979-10-10 Loewy Robertson Eng Co Ltd Automatic control of rolling
GB2051641A (en) * 1979-07-10 1981-01-21 Schloemann Siemag Ag Rolling strip material
GB2059316A (en) * 1979-10-03 1981-04-23 Gen Electric Temperature control in hot strip mill
EP0041863A2 (de) * 1980-06-11 1981-12-16 DAVY McKEE (POOLE) LIMITED Sprühvorrichtung für Walzwerk

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1811238A1 (de) * 1968-11-27 1970-06-25 Inst Avtomatiki Einrichtung zur Regelung des Bandprofils des Walzgutes in Feinblech-Kaltwalzwerken
GB2017974A (en) * 1978-03-31 1979-10-10 Loewy Robertson Eng Co Ltd Automatic control of rolling
GB2051641A (en) * 1979-07-10 1981-01-21 Schloemann Siemag Ag Rolling strip material
GB2059316A (en) * 1979-10-03 1981-04-23 Gen Electric Temperature control in hot strip mill
EP0041863A2 (de) * 1980-06-11 1981-12-16 DAVY McKEE (POOLE) LIMITED Sprühvorrichtung für Walzwerk

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988009702A1 (en) * 1987-06-02 1988-12-15 Sulzer-Escher Wyss Ag Process and device for rolling metal strip
WO2000064605A1 (de) * 1999-04-26 2000-11-02 Sms Demag Aktiengesellschaft Walzverfahren für ein metallband und hiermit korrespondierende walzanordnung
US9200356B2 (en) 2006-08-28 2015-12-01 Air Products And Chemicals, Inc. Apparatus and method for regulating cryogenic spraying
WO2008145222A1 (de) 2007-05-30 2008-12-04 Sms Siemag Ag Vorrichtung zur beeinflussung der temperaturverteilung über der breite
KR101138725B1 (ko) * 2007-05-30 2012-04-25 에스엠에스 지마크 악티엔게젤샤프트 폭에 걸친 온도 분포에 영향을 주기 위한 장치
RU2488456C2 (ru) * 2007-05-30 2013-07-27 Смс Зимаг Аг Устройство для воздействия на распределение температур по ширине
US9180504B2 (en) 2007-05-30 2015-11-10 Sms Group Gmbh Device for influencing the temperature distribution over a width
CN101678419B (zh) * 2007-05-30 2016-12-28 Sms集团有限责任公司 用于影响在宽度上的温度分布的装置
EP2200762A1 (de) * 2007-08-28 2010-06-30 Air Products and Chemicals, Inc. Verfahren und vorrichtung zum abführen eines nicht linearen kryogensprühnebels über die breite eines walzgerüsts
EP2200762A4 (de) * 2007-08-28 2011-10-05 Air Prod & Chem Verfahren und vorrichtung zum abführen eines nicht linearen kryogensprühnebels über die breite eines walzgerüsts
US9016076B2 (en) 2007-08-28 2015-04-28 Air Products And Chemicals, Inc. Apparatus and method for controlling the temperature of a cryogen
EP2283887A1 (de) 2009-08-06 2011-02-16 Activaero GmbH Vorrichtung zur Flussbegrenzung bei niedrigen Differenzdrücken

Also Published As

Publication number Publication date
EP0136921A3 (de) 1985-09-25
JPS6096315A (ja) 1985-05-29
GB8326652D0 (en) 1983-11-09

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Effective date: 19860526

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Inventor name: STUBBS, STUART

Inventor name: GRONBECH, ROBERT WILLIAM