US20140290325A1 - Stripper for a work roll of a rolling stand - Google Patents

Stripper for a work roll of a rolling stand Download PDF

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Publication number
US20140290325A1
US20140290325A1 US14/352,105 US201214352105A US2014290325A1 US 20140290325 A1 US20140290325 A1 US 20140290325A1 US 201214352105 A US201214352105 A US 201214352105A US 2014290325 A1 US2014290325 A1 US 2014290325A1
Authority
US
United States
Prior art keywords
screening
stripper
screening element
work roll
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.)
Abandoned
Application number
US14/352,105
Other languages
English (en)
Inventor
Stephan Fischer
Andreas Loehr
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 Group GmbH
Original Assignee
SMS 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 Siemag AG filed Critical SMS Siemag AG
Assigned to SMS SIEMAG AG reassignment SMS SIEMAG AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LOEHR, ANDREAS, FISCHER, STEPHAN
Publication of US20140290325A1 publication Critical patent/US20140290325A1/en
Assigned to SMS GROUP GMBH reassignment SMS GROUP GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SMS SIEMAG AG
Abandoned 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
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally

Definitions

  • the present invention relates to a stripper for a work roll of a rolling stand in particular a work roll of a hot rolling stand, and an apparatus for cooling a work roll of a rolling stand.
  • strippers are used for upper and lower work rolls at an inlet and an outlet of a respective rolling stand.
  • the strippers typically permanently make contact with the work rolls during a rolling operation.
  • the contacts are carried out with a stripper tip that makes contact with a respective work roll.
  • the strippers are formed for screening the surface of the rolled material from the roll cooling water and are in a position to eventually strip the rolled material clinging to the work rolls.
  • the work rolls are subjected to high thermal loads.
  • the heat, which is applied to the work rolls is transferred in the rolling gap primarily by contact of the work rolls with the rolled material, wherein the input heat energy is increased additionally by a rolling heat produced as a result of plastic deformation of the rolled material.
  • friction heat which is produced by friction between the rolled material and the work roll and in the contact region between the work roll and the usually provided, back-up roll, is also applied to the work rolls.
  • the roll cooling is of a paramount importance.
  • it is attempted, by an appropriate outer cooling of the roll, in particular at the outlet side, to remove the work roll heat, which is applied to the roll outer surface in the rolling gap, efficiently and to a most possible extent, as soon as possible after the rolled material exits from the rolling gap to prevent penetration of the heat into the depth of the roll.
  • the cooling water is sprayed on the work roll as soon as possible.
  • the strippers take care that the cooling water, which is sprayed on the work roll from outside, makes no contact with the rolled material and/or reduction of the quality of the rolled material is prevented.
  • the strippers are arranged above the rolled material as low as possible and are arranged as close as possible to the roll gap.
  • the strippers forms partially a component of respective inlet and outlet guides and are correspondingly at least rotatably supported or often are even mounted on gimbals.
  • the strippers are pressed against respective work rolls either pneumatically or hydraulically or by a contact with a pressure mass.
  • the stripper typically is arranged very low above the rolled material, it is subjected to a high thermal load on its side adjacent to the rolled material, on one hand. On its side remote from the rolled material, the stripper is impacted by the cooling water which it should prevent from reaching the rolled material.
  • the prior art strippers are subjected to very high temperatures on one of their sides and to cooling water temperatures on their other sides. Thereby, unavoidably, a different thermal expansion on respective stripper sides takes place which results in wobbling of the stripper and, e.g., no complete sealing can be provided, e.g., in the middle region of the rolled material.
  • Stripper elements are disclosed, e.g., in DE 2008 019 548 A1 and in EP 0 899 030 A2.
  • the object of the invention is to provide a stripper and a device for cooling work rolls of a rolling stand which would insure a better sealing of the cooling water during operation.
  • the stripper for a work roll of a rolling stand in particular of a hot rolling stand, has a stripper tip for making contact with the work roll of the rolling stand, and a first screening element for screening a rolled material form cooling water of the rolling stand is provided.
  • a second screening element for screening the first screening element from being thermally loaded by the rolled material.
  • both screening elements namely the first screening element and the second screening element can be so adapted to respective prevailing thermal conditions that the stripper tip makes a constant contact with a respective work roll.
  • the first screening element is advantageously spaced from the second screening element by a distance from 0.5 cm to 5 cm, preferably, by a distance from 1 cm to 4 cm, and even more preferably, by a distance from 2 cm to 3 cm.
  • insulation element is provided between the first screening element and the second screening element for thermally insulating both screening elements from each other.
  • the second screening element that serves for screening the thermal load applied by the rolled material is subjected to noticeably higher temperature than the first screening element that keeps the cooling water away from the rolled material.
  • wobbling of the stripper can be prevented because a noticeable temperature difference of different sides within a single material, which is known in the state-of-the art, is prevented.
  • the stripper according to the present invention wobbles much less or mostly not at all, so that the screening by the stripper of the strip middle region can be achieved and set in a controlled manner.
  • At least one third screening element spaced from the first screening element and/or from the second screening element, and/or at least one second insulation element is arranged between the third screening element and the first and/or second screening element.
  • a sandwich structure is provided advantageously for at least two screening elements.
  • This can be achieved with a corresponding multi-part construction of the stripper in form of a sandwich construction, in particular with the inwardly located insulation layer.
  • the insulation layer separates the side with a high thermal load from the side with a low thermal load.
  • the two screening elements are connected with each other by screw means, preferably with use of spacers.
  • a particular efficient construction is achieved with at least two screening elements which are spaced from each other and are connected with each other by screw means and/or a spacer.
  • the stripper tip is formed as a separate constructional component that can be quickly replaced, using a simple lock.
  • the stripper tip can be formed of another material than the first and second screening elements.
  • the stripper is pivotally supported on the rolling stand as a unit so that a contact of the stripper with the outer surface of the work roll is insured even if the work roll axis moves or is displaced.
  • At least one screening element extends, as one piece, over the support length of the work roll.
  • the object of the invention is also achieved with an apparatus for cooling of work roll of a rolling stand having the features of claim 10 .
  • An apparatus for cooling a work roll in a rolling stand includes a cooling water-spraying apparatus for spraying cooling water onto the work roll, and the above-described stripper, wherein the stripper is arranged between the rolled material and the cooling water-spraying apparatus.
  • FIG. 1 an upper outlet stripper according to an exemplary embodiment of the present invention.
  • a stripper 11 the stripper tip 5 of which makes a contact with a work roll 1 of a not explicitly shown, rolling stand of a hot rolling train.
  • the work roll 1 is supported, in a known manner by a back-up roll 2 .
  • the work roll 1 is cooled in a known manner. In addition to a known inner cooling of the work roll 1 , it is also cooled from outside by being sprayed with cooling water.
  • a cooling water apparatus 3 cools the work roll 1 after a rolled material 10 left the rolling gap.
  • the cooling water apparatus 3 applies a large amount of water directly to the work roll 1 .
  • the stripper 1 is arranged between the rolled material 10 and the cooling water apparatus 3 in order to prevent contact of the rolled material 10 with the cooling water. Cooling of the rolled material 10 within a respective rolling mill train is undesirable.
  • the stripper 11 with the stripper tip 5 is so arranged that the cooling water comes into contact with the work roll 1 as soon as possible after a respective surface element exits the rolling gap.
  • the stripper tip 5 is advantageous arranged as close as possible to the rolling gap.
  • the stripper tip 5 extends advantageously over the entire support length of the work roll 1 in order to achieve uniform stripping and uniform cooling of the work roll 1 .
  • the stripper 11 is pivotally supported by a bearing journal 4 .
  • a pneumatic cylinder 12 which is arranged at an end of the stripper 11 opposite the stripper tip 5 , presses the stripper tip 5 against the work roll 1 .
  • the bearing journal 4 is correspondingly arranged between the stripper tip 5 and the pneumatic cylinder 12 .
  • the stripper includes a screening element 8 for screening the rolled material 10 from the cooling water applied by the cooling water apparatus 3 .
  • a second screening element 6 for screening the first screening element 8 from being thermally loaded by the rolled material 10 .
  • the second screening element 6 is spaced from the first screening element 8 .
  • the second screening element 6 is provided on the side of the stripper 11 adjacent to the rolled material 10 .
  • the second screening element 6 screens the large radiation heat of the rolled material 10 . In this way, the excessively large temperature gradient in the thickness direction of the screening element 8 is prevented, whereby a disadvantageous heat deformation of the stripper 11 can be avoided.
  • the first screening element 8 and the second screening element 6 are connected with each other by a fastening element 9 which is shown schematically.
  • a fastening element 9 e.g., a screw element, in combination with spacing elements.
  • first screening element 8 there is provided, between first screening element 8 and the second screening element 6 , an insulation element 7 that thermally insulates both plate-shaped screening elements 8 and 6 from each other.
  • the spacer in the fastening element 9 also serves for preventing the insulation element 7 from being crushed or destroyed upon connection of the first screening element 8 with the second screening element 6 .
  • stripper 11 In addition to the structure of the stripper 11 with a first screening element 8 and a second screening element 6 and an insulation element 7 arranged therebetween and which is shown in FIG. 1 , a construction of stripper 11 is contemplated, according to the present invention, which has more than two screening elements, e.g., three or four which likewise are separated from each other by an insulation layer and are spaced from each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US14/352,105 2011-10-18 2012-09-03 Stripper for a work roll of a rolling stand Abandoned US20140290325A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102011084735A DE102011084735A1 (de) 2011-10-18 2011-10-18 Abstreifer für eine Arbeitswalze eines Walzgerüsts
DE102011084735.9 2011-10-18
PCT/EP2012/067053 WO2013056889A1 (de) 2011-10-18 2012-09-03 Abstreifer für eine arbeitswalze eines walzgerüsts

Publications (1)

Publication Number Publication Date
US20140290325A1 true US20140290325A1 (en) 2014-10-02

Family

ID=46888392

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/352,105 Abandoned US20140290325A1 (en) 2011-10-18 2012-09-03 Stripper for a work roll of a rolling stand

Country Status (8)

Country Link
US (1) US20140290325A1 (de)
EP (1) EP2768622B1 (de)
JP (1) JP2014530108A (de)
KR (1) KR20140063842A (de)
CN (1) CN103889607B (de)
DE (1) DE102011084735A1 (de)
RU (1) RU2567139C1 (de)
WO (1) WO2013056889A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11014133B2 (en) * 2016-09-06 2021-05-25 Sms Group Gmbh Device and method for applying a liquid medium to a roll and/or to a rolled material and/or for removing the liquid medium

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106424144B (zh) * 2016-12-27 2018-04-17 中冶南方工程技术有限公司 一种热轧工作辊刮水喷油系统及方法
DE102017101713A1 (de) 2017-01-30 2018-08-02 Achenbach Buschhütten GmbH & Co. KG Verfahren und Vorrichtung zur Reduzierung der Walzöllast eines Walzbandes
IT202100008258A1 (it) * 2021-04-01 2022-10-01 Eurolls S P A Apparato e procedimento di laminazione di un prodotto metallico
CN113560352B (zh) * 2021-06-04 2023-06-06 江苏伟复能源有限公司 一种蓄电池电极板的连铸连轧设备
DE102022202100A1 (de) * 2022-03-01 2023-09-07 Sms Group Gmbh Abstreifvorrichtung

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
DE1139460B (de) * 1959-02-09 1962-11-15 Theodor Wuppermann G M B H Abstreifer fuer warm zu walzendes Walzgut
JPS489615Y1 (de) * 1970-01-10 1973-03-14
JPS5347080Y2 (de) * 1975-02-13 1978-11-10
JPS53160432U (de) * 1977-05-24 1978-12-15
JPS5782404U (de) * 1980-11-04 1982-05-21
SU1031543A1 (ru) * 1981-09-30 1983-07-30 Институт черной металлургии Устройство дл поверхностной обработки прокатных валков
JPH0228303U (de) * 1988-08-09 1990-02-23
JPH0739443Y2 (ja) * 1989-03-20 1995-09-13 川崎製鉄株式会社 圧延ロール冷却水の水切板
JPH05154517A (ja) * 1991-11-29 1993-06-22 Kawasaki Steel Corp 圧延ロールのオンラインワイパ装置
BE1011138A6 (fr) * 1997-04-30 1999-05-04 Travhydro Plastics Et Isolants Dispositif racleur pour laminoir.
DE19737735A1 (de) 1997-08-29 1999-03-04 Schloemann Siemag Ag Vorrichtung und Verfahren zur auslaufseitigen Kühlung der Arbeitswalzen eines Walzgerüstes
DE10131369A1 (de) * 2001-06-28 2003-01-09 Sms Demag Ag Verfahren und Vorrichtung zum Kühlen und Schmieren von Walzen eines Walzgerüstes
DE102008019548A1 (de) 2008-04-18 2009-10-22 Sms Siemag Aktiengesellschaft Auslauf einer Walzanlage
JP5558030B2 (ja) * 2009-05-28 2014-07-23 六菱ゴム株式会社 圧延ロールの水切り装置
CN101829693B (zh) * 2010-04-27 2011-11-09 中冶南方工程技术有限公司 无吹扫乳化液残留清除方法
CN201940429U (zh) * 2011-02-18 2011-08-24 宝钢工程技术集团有限公司 逆流式压缩空气轧制液吹扫装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11014133B2 (en) * 2016-09-06 2021-05-25 Sms Group Gmbh Device and method for applying a liquid medium to a roll and/or to a rolled material and/or for removing the liquid medium

Also Published As

Publication number Publication date
EP2768622B1 (de) 2015-11-18
WO2013056889A1 (de) 2013-04-25
JP2014530108A (ja) 2014-11-17
CN103889607A (zh) 2014-06-25
EP2768622A1 (de) 2014-08-27
CN103889607B (zh) 2016-06-15
DE102011084735A1 (de) 2013-04-18
RU2567139C1 (ru) 2015-11-10
KR20140063842A (ko) 2014-05-27

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SMS SIEMAG AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FISCHER, STEPHAN;LOEHR, ANDREAS;SIGNING DATES FROM 20140414 TO 20140504;REEL/FRAME:033024/0373

AS Assignment

Owner name: SMS GROUP GMBH, GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:SMS SIEMAG AG;REEL/FRAME:036078/0407

Effective date: 20150609

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION