EP2768622B1 - Racleur pour un cylindre de travail d'une cage de laminoir - Google Patents

Racleur pour un cylindre de travail d'une cage de laminoir Download PDF

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Publication number
EP2768622B1
EP2768622B1 EP12761924.5A EP12761924A EP2768622B1 EP 2768622 B1 EP2768622 B1 EP 2768622B1 EP 12761924 A EP12761924 A EP 12761924A EP 2768622 B1 EP2768622 B1 EP 2768622B1
Authority
EP
European Patent Office
Prior art keywords
stripper
screening
scraper
screening element
work roll
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.)
Active
Application number
EP12761924.5A
Other languages
German (de)
English (en)
Other versions
EP2768622A1 (fr
Inventor
Stephan Fischer
Andreas Löhr
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
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SMS Group GmbH
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 Group GmbH filed Critical SMS Group GmbH
Publication of EP2768622A1 publication Critical patent/EP2768622A1/fr
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Publication of EP2768622B1 publication Critical patent/EP2768622B1/fr
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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 scraper for a work roll of a rolling stand, in particular a work roll of a hot rolling mill, and a device for cooling a work roll of a rolling stand.
  • a generic Abrasier is eg from document WO-A-98/48956 known.
  • scrapers for the upper and lower work rolls are installed in the inlet and outlet of the respective stands.
  • the scrapers typically have constant contact with the work rolls. This contact is made in each case via a scraper tip, which contacts the respective work roll.
  • the scrapers are adapted to shield the rolling stock surface against the roll cooling water and are capable of scraping any rolling stock adhering to the work rolls from the work rolls.
  • the work rolls are subjected to a high thermal load during the rolling process.
  • the heat applied to the work rolls heat is transferred mainly in contact of the work rolls with the rolling stock in the nip, the registered heat energy is increased here by the additionally developed by the plastic deformation of the rolling stock rolling heat.
  • frictional heat is introduced by the friction generated between rolling stock and rolls, as well as also in the contact area between the work roll and the support rollers usually provided in the work rolls.
  • typically the radiant heat of the rolling stock in the inlet area and in the outlet area is transferred to the work rolls.
  • the roll cooling is of considerable importance.
  • it is attempted to withdraw by a sufficient external roll cooling, especially on the outlet side, the registered in the nip in the surface region of the work roll heat of the work roll as early as possible after leaving the nip to the penetration of heat in the depth of the roll as possible largely and efficiently prevent.
  • cooling water is sprayed onto the work rolls as early as possible.
  • the scrapers ensure that the outside of the work rolls sprayed cooling water does not come into contact with the rolling stock to prevent cooling of the rolling stock and / or a reduction in the quality of the rolling stock.
  • the scrapers are as deep as possible above the rolling stock or as close to the roll gap as possible. Some of the scrapers are also part of the respective inlet and outlet guides and are accordingly at least rotatable or often gimbal stored. The scraper is pressed against the respective work rolls either pneumatically, hydraulically or by an impact with a contact mass.
  • the scraper Since the scraper is typically arranged very close above the surface of the rolling stock, it is on one side, namely on the rolling stock facing side, exposed to high thermal stress. On the other hand, on the side facing away from the rolling stock, the scraper is charged with the cooling water, which he should wegalten from the rolling stock. Accordingly, the
  • scrapers of the prior art are subjected to very high temperatures and, on the other hand, to cooling-water temperatures. This inevitably results in a different thermal expansion of the respective sides of the scraper, which may result in that the scraper buckles and can not provide a complete seal more for example in the central region of the rolling stock.
  • Stripping elements are for example from the DE 10 2008 019 548 A1 as well as from the EP 0 899 030 A2 known.
  • the WO 98/48956 A1 discloses a stripping device for work rolls comprising a first scraper and a second scraper of flexible material.
  • the first scraper supports while the second scraper, both of which can rest against the work roll.
  • the JP 5 154517 A discloses two scrapers, wherein the one scraper made of a hard against friction resistant, the other scraper made of a soft material.
  • the scraper for a work roll of a rolling stand in particular a hot rolling stand, a scraper tip for contacting a work roll of the rolling mill and a first shielding member for shielding the rolling against cooling water of the rolling mill is provided.
  • a second shielding element is provided for shielding the first shielding element against thermal loading by the rolling stock.
  • first shielding element for shielding the rolling stock against the cooling water
  • second shielding element for shielding the first shielding element against thermal stress by the rolling stock
  • the first and second shield members are preferably spaced apart, preferably at a distance of 0.5cm to 5cm, more preferably at a distance of 1cm to 4cm, even more preferably at a distance of 2cm to 3cm.
  • a shielding of the first shielding element can be achieved by the second shielding element.
  • a parallelogram effect can be achieved in this way if the first shielding element and the second shielding element are subjected to a different temperature expansion due to different temperature action.
  • an insulating element for thermal insulation of the two shielding elements is arranged between the first shielding element and the second shielding element.
  • the second shielding element which serves to shield the thermal load from the rolling stock, is subjected to a significantly higher temperature than the first shielding element which keeps the cooling water away from the rolling stock.
  • bowing of the scraper can be prevented since a large temperature difference of the different sides within a single material, as known in the art, is avoided.
  • the scraper according to the present invention bulges in operation less strong or not at all, so that the shielding performance of the scraper can be set in the band center area targeted and controllable.
  • At least one third shielding element is provided at a distance from the first shielding element and / or from the second shielding element and / or at least one second insulating element is arranged between the third shielding element and the first and / or second shielding element.
  • the corresponding multi-part structure of the scraper in the form of a sandwich construction in particular with an inner insulating layer, can fulfill this.
  • the insulating layer separates the side of high thermal stress from the side of low thermal stress.
  • the two shielding elements are connected to one another by a screw connection, preferably using spacers.
  • a particularly efficient construction is achieved by at least two shielding elements, which are spaced apart from one another by screw connections and / or spacers and connected to one another.
  • the scraper tip is formed as a separate component, which can preferably be quickly replaced by a simple closure.
  • the scraper tip can be made of a different material than the first and second shielding elements.
  • the scraper is preferably pivotally mounted as a whole relative to the rolling stand, so that a contact of the scraper tip is ensured with the outer surface of the respective work roll, even with movements or displacements of the axis of the work roll.
  • At least one stripping element extends integrally over the support length of a work roll.
  • a device for cooling the work roll of a rolling stand with the features of claim 10 also solves the above object.
  • the apparatus for cooling a work roll in a rolling stand comprises adewassersprühvorraum for spraying cooling water on the work roll, and a scraper described above, wherein the scraper between the rolling stock and thedewasseraufsprühvorraum is arranged.
  • a scraper 11 is provided, which is by means of its scraper tip 5 in contact with a work roll 1 of a rolling stand, not explicitly shown, a hot rolling line.
  • the work roll 1 is in a conventional manner in contact with a support roller. 2
  • the work roll 1 is cooled in a likewise known manner. In addition to a known internal cooling of the work roll 1, it is also cooled by spraying with cooling water from the outside.
  • the work roll 1 is cooled by means of a cooling water spraying device 3.
  • Thedewassersprühvorraum 3 brings this large amounts of cooling water directly on the work roll 1.
  • the scraper 11 is disposed between the rolling stock 10 and thedewassersprühvorraum 3 to prevent the rolling stock 10 comes into contact with the cooling water.
  • a cooling of the rolling stock 10 is namely not desired within the respective rolling mills.
  • the scraper 11 is arranged with its scraper tip 5 such that the cooling water comes as soon as possible after the exit of the respective surface element from the roll gap with the work roll 1 in contact.
  • the scraper tip 5 is advantageously arranged as close as possible to the roll gap.
  • the scraper tip 5 advantageously extends over the entire support length of the work roll 1, in order to achieve a uniform stripping and a uniform cooling of the work roll 1.
  • the scraper 11 is pivotally mounted via a bearing pin 4.
  • the stripper tip 5 is pressed against the work roll 1 by means of a pneumatic cylinder 12, which is arranged at the stripper tip 5 opposite end of the scraper 11.
  • the bearing pin 4 is arranged between the stripper tip 5 and the pneumatic cylinder 12 accordingly.
  • the scraper 11 comprises a shielding element 8 for the actual shielding of the rolling stock 10 against the cooling water applied with the cooling water spray device 3.
  • a second shielding element 6 is provided, which serves to shield the first shielding element 8 against the thermal load of the rolling stock 10.
  • the second shielding element 6 is spaced from the first shielding element 8.
  • two shielding elements 8, 6 are provided here at a distance from one another, the first shielding element 8 protecting the rolling stock 10 from contact with the cooling water from the spraying device 3 and the second shielding element 6 protecting the first shielding element from excessive heat.
  • the second shielding element 6 is provided on the rolling stock 10 facing side of the scraper 11. Accordingly, the large radiant heat of the rolling stock 10 is shielded by the second shielding element 6 here. In this way, an excessively large temperature gradient in the thickness direction of the shielding member 8 can be avoided, whereby disadvantageous heat deformation of the scraper 11 can be avoided.
  • the first shielding element 8 and the second shielding element 6 are connected to each other via schematically indicated fastening elements 9.
  • a fastening element 9 for example a screw connection, in combination with spacer elements is preferably provided.
  • an insulating element 7 is provided between the first shielding element 8 and the second shielding element 6, which thermally insulates the two plate-shaped shielding elements 8, 6 from each other.
  • the spacers in the fastening elements 9 then also serve to prevent the insulating layer 7 from being crushed or destroyed when the first shielding element 8 is connected to the second shielding element 6.
  • FIG. 1 shown structure of the scraper 11 with a first shielding element 8 and a second shielding member 6 and the interposed insulating member 7 are also constructions for a scraper 11 part of the present invention, which more than two shielding have, for example, three or four, which are also separated from each other, for example by means of an insulating layer and spaced from each other.

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

Claims (9)

  1. Racleur (11) pour un cylindre de travail d'une cage de laminoir, en particulier d'une cage de laminoir à chaud, dans lequel le racleur (11) présente une pointe de racleur (5) destinée à entrer en contact avec un cylindre de travail (1) de la cage de laminoir et un premier élément de protection (8) est prévu pour protéger le produit (10) soumis au laminage contre l'eau de refroidissement de la cage de laminoir, dans lequel un deuxième élément de protection (6) est prévu pour protéger le premier élément de protection (8) contre une sollicitation thermique via le produit (10) soumis au laminage, caractérisé en ce qu'un élément d'isolation (7) est disposé entre le premier élément de protection (8) et le deuxième élément de protection (6) pour l'isolation thermique des deux éléments de protection (6, 8) l'un par rapport à l'autre.
  2. Racleur selon la revendication 1, dans lequel le premier élément de protection (8) est disposé à l'écart du deuxième élément de protection (6), de préférence à une distance de 0,5 cm à 5 cm, de manière plus préférée à une distance de 1 cm à 4 cm, de manière encore plus préférée à une distance de 2 cm à 3 cm.
  3. Racleur selon la revendication 1 ou 2, dans lequel on prévoit au moins un troisième élément de protection à l'écart du premier élément de protection (8) et/ou du deuxième élément de protection (6) et/ou au moins un deuxième élément d'isolation est disposé entre le troisième élément de protection et le premier et/ou le deuxième élément de protection.
  4. Racleur selon l'une quelconque des revendications précédentes, dans lequel au moins deux éléments de protection (6, 8) forment l'un avec l'autre une structure en sandwich.
  5. Racleur selon l'une quelconque des revendications précédentes, dans lequel au moins deux éléments de protection (6, 8) sont reliés l'un à l'autre à l'écart l'un de l'autre via des liaisons à vis et/ou via des espaceurs.
  6. Racleur selon l'une quelconque des revendications précédentes, dans lequel la pointe (5) du racleur est réalisée sous la forme d'un composant séparé et est de préférence reliée au premier élément de protection (8) et/ou au deuxième élément de protection (7).
  7. Racleur selon l'une quelconque des revendications précédentes, dans lequel les éléments de protection (6, 8) sont montés en pivotement par rapport à la cage de laminoir.
  8. Racleur selon l'une quelconque des revendications précédentes, dans lequel au moins un élément de raclage (6, 8) s'étend d'une seule pièce sur toute la longueur d'appui d'un cylindre de travail (1).
  9. Dispositif pour le refroidissement d'un cylindre de travail (1) d'une cage de laminoir, comprenant un dispositif de pulvérisation d'eau de refroidissement (3) pour pulvériser de l'eau de refroidissement sur le cylindre de travail (1), ainsi qu'un racleur (11) selon l'une quelconque des revendications précédentes, le racleur (11) étant disposé entre le produit (10) soumis au laminage et le dispositif de pulvérisation d'eau de refroidissement (3).
EP12761924.5A 2011-10-18 2012-09-03 Racleur pour un cylindre de travail d'une cage de laminoir Active EP2768622B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011084735A DE102011084735A1 (de) 2011-10-18 2011-10-18 Abstreifer für eine Arbeitswalze eines Walzgerüsts
PCT/EP2012/067053 WO2013056889A1 (fr) 2011-10-18 2012-09-03 Racleur pour un cylindre de travail d'une cage de laminoir

Publications (2)

Publication Number Publication Date
EP2768622A1 EP2768622A1 (fr) 2014-08-27
EP2768622B1 true EP2768622B1 (fr) 2015-11-18

Family

ID=46888392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12761924.5A Active EP2768622B1 (fr) 2011-10-18 2012-09-03 Racleur pour un cylindre de travail d'une cage de laminoir

Country Status (8)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016223131A1 (de) * 2016-09-06 2018-03-08 Sms Group Gmbh Vorrichtung und Verfahren zum Aufbringen eines flüssigen Mediums auf eine Walze und/oder auf ein Walzgut und/oder zum Entfernen des flüssigen Mediums
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)

* Cited by examiner, † Cited by third party
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 (fr) * 1970-01-10 1973-03-14
JPS5347080Y2 (fr) * 1975-02-13 1978-11-10
JPS53160432U (fr) * 1977-05-24 1978-12-15
JPS5782404U (fr) * 1980-11-04 1982-05-21
SU1031543A1 (ru) * 1981-09-30 1983-07-30 Институт черной металлургии Устройство дл поверхностной обработки прокатных валков
JPH0228303U (fr) * 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

Also Published As

Publication number Publication date
RU2567139C1 (ru) 2015-11-10
JP2014530108A (ja) 2014-11-17
CN103889607B (zh) 2016-06-15
KR20140063842A (ko) 2014-05-27
US20140290325A1 (en) 2014-10-02
EP2768622A1 (fr) 2014-08-27
CN103889607A (zh) 2014-06-25
WO2013056889A1 (fr) 2013-04-25
DE102011084735A1 (de) 2013-04-18

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