EP2248616B1 - Device for cleaning chilled rolls - Google Patents

Device for cleaning chilled rolls Download PDF

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Publication number
EP2248616B1
EP2248616B1 EP08867995A EP08867995A EP2248616B1 EP 2248616 B1 EP2248616 B1 EP 2248616B1 EP 08867995 A EP08867995 A EP 08867995A EP 08867995 A EP08867995 A EP 08867995A EP 2248616 B1 EP2248616 B1 EP 2248616B1
Authority
EP
European Patent Office
Prior art keywords
barrel
cleaning
wires
brush
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.)
Not-in-force
Application number
EP08867995A
Other languages
German (de)
English (en)
French (fr)
Japanese (ja)
Other versions
EP2248616A4 (en
EP2248616A1 (en
Inventor
Hiroyuki Otsuka
Hiroki Yoshizawa
Katsumi Nakayama
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Publication of EP2248616A1 publication Critical patent/EP2248616A1/en
Publication of EP2248616A4 publication Critical patent/EP2248616A4/en
Application granted granted Critical
Publication of EP2248616B1 publication Critical patent/EP2248616B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0665—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/0665—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating
    • B22D11/0668—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating for dressing, coating or lubricating

Definitions

  • the present invention relates to a device for cleaning chilled rolls used in a twin roll caster.
  • twin-roll continuous casting where molten metal is supplied to between a pair of rotated rolls to deliver a solidified metal strip therefrom.
  • Figs. 1 and 2 show a twin roll caster with a conventional cleaning device for chilled rolls, the twin roll caster comprising a pair of chilled rolls 1 arranged horizontally side by side, and a pair of side weirs associated with the rolls 1.
  • the chilled rolls 1 are constructed such that cooling water passes through the rolls and a nip G between the rolls may be expanded/contracted depending on thickness of a strip 3 to be produced.
  • the rotated speed and direction of the chilled rolls 1 are set such that outer peripheries of the respective rolls move from above to the nip G between the rolls at the same speed.
  • One of the side weirs 2 surface-contact one ends of the respective chilled rolls 1 and the other side weir 2, the other ends of the rolls 1.
  • a molten-metal delivery nozzle 4 is arranged between the paired side weirs 2 and just above the nip G between the rolls. Molten metal is poured from a ladle (not shown) via the nozzle 4 into a space defined by the rolls 1 and the side weirs 2 to form a molten metal pool 5.
  • the rolls 1 are rotated while being cooled by circulation of cooling water therethrough, so that molten steel is solidified on the outer peripheries of the rolls 1, the solidified shells 6 on the respective outer peripheries of the chilled rolls 1 being brought together to be delivered downwardly from the nip G as the steel strip 3.
  • oxides including for example manganese and silicon are attached to the outer peripheries of the rolls 1.
  • the attached oxides increased in thickness hinder heat transfer from the molten steel to the rolls 1 and interfere the production of the solidified shells 6 on the outer peripheries of the rolls 1.
  • a cylindrical brush 7 is arranged for each of the rolls 1 such that the brush abuts on the outer periphery of the roll all over an axial length of the roll.
  • the brush 7 is rotated by a motor (not shown) in the same direction as that of the roll 1 to clean the outer periphery of the roll 1, thus removing any attached oxidation layer (see, for example, Patent Literatures 1 and 2).
  • Each of the cowlings 8 is formed with a set of dust suction ports 9 spaced apart from each other axially of the roll 1 such that the respective sets of suction ports 9 are symmetrical, the dust suction ports 9 being connected to an exhaust blower 10 for prevention of dust from scattering during the cleaning.
  • the brush 7 comprises a barrel 11 and grouped cleaning wires 12 implanted generally over an outer periphery of the barrel 11. It is not easy to suck, out of the cowlings 8, the dust intruding between the densely implanted wires 12.
  • the development, of the solidified shell 6 is smooth at the portions of the brush 7 in the regions ⁇ adjacent to the dust suction ports 9 and is not smooth at the other portions due to hindrance of heat transfer by the dust.
  • the steel strip 3 delivered from the paired chilled rolls 1 is made up of the solidified shells 6 applied to each other at their well-developed ridges shown in Fig. 2 , there remaining unsolidified zones at valleys between the ridges axially of the chilled rolls 1.
  • the steel strip 3 after its shrinkage due to the solidification may have irregular thickness distribution widthwise of the strip, resulting in cracks on the strip.
  • the invention was made in view of the above and has its object to provide a device for cleaning chilled rolls which can keep brushes to have high cleanness.
  • a device for cleaning chilled rolls comprises brushes each comprising a rotatable cylindrical barrel formed with a number of suction through-holes extending from an outer periphery to inside, said barrel extending in parallel with an axis of the roll, grouped cleaning wires implanted on the outer periphery of the barrel and having tips abutting on an outer periphery of the roll upon rotation of the barrel and a dust suction port at one of ends of said barrel and in communication with an inner space of the barrel, said dust suction port being connected to an exhaust mechanism.
  • the grouped cleaning wires may be implanted on the outer periphery of the barrel such that the wires form a helical bank extending from an end to the other end of the barrel.
  • the grouped cleaning wires may be implanted on the outer periphery of the barrel such that wires form a plurality of helical banks extending from an end to the other end of the barrel.
  • the grouped cleaning wires are varied in length, diameter and/or material quality between the banks. Portions of the brush not facing to the roll may be sheathed by a cowling.
  • a device for cleaning chilled rolls according to the invention can exhibit the following excellent effects and advantages.
  • suction through-holes are formed on the barrel with the outer periphery on which wires are implanted, so that dust generated upon cleaning can enter via the suction through-holes into an inner space within the barrel and is discharged via the dust suction port to outside.
  • the brush can be kept to have high cleanness.
  • the strip delivered from the chilled rolls has tendency of having not irregular thickness distribution widthwise of the strip but averaged one, cracks being prevented from occurring.
  • FIGS. 3 and 4 show a twin roll caser with a device for cleaning chilled rolls according to the invention in which parts similar to those of Figs. 1 and 2 are represented by the same reference numerals.
  • Employed in the device for cleaning the chilled rolls is a technique such that a brush 13 arranged for each of chilled rolls 1 is rotated by a motor (not shown) in the same direction as that of the roll 1 to clean an outer periphery of the roll 1, thereby removing any attached oxide layer.
  • the brush 13 comprises a cylindrical barrel 15 formed with a number of suction through-holes 14 extending from an outer periphery of the barrel to inside, grouped cleaning wires 16 implanted on the outer periphery of the barrel 15 such that the wires 16 form a helical bank extending from an end of the barrel 15 to the other end thereof, a dust suction port 18 in the form of a hollow shaft coaxially associated with the barrel 15 through a ring plate 17 fitted into the end of the barrel 15 and a support shaft 19 coaxially fixed to the barrel 15 through a plate (not shown) fitted to the other end of the barrel 15, the brush being arranged in parallel with an axis of the chilled roll 1 in such a manner that tips of the grouped wires 16 are caused to sequentially abut on the outer periphery of the roll 1 through rotation of the barrel 15.
  • grouped cleaning wires 16 implanted ... such that the wires 16 form a helical bank encompass both a technique of implanting a bunch of a predetermined number of wires to each of implant holes formed on the barrel 15 and a technique of attaching to the barrel 15 a channel brush comprising the grouped wires tied down by a channel-shaped long holder so as to have any given thickness.
  • a hollow shaft-like dust suction port 18 communicating with an inner space in the barrel 15 is connected to a compulsory exhaust mechanism in the form of exhaust blower 10 through a rotary joint (not shown) for rotation of the brush 13 as well as a piping 21.
  • the brushes 13 are rotated by motors (not shown) in the same directions as those of the chilled rolls 1 to clean the outer peripheries of the chilled rolls 1 to thereby remove the attached oxide layers while the exhaust blower 10 is activated to catch the dust in the respective cowlings 20.
  • the grouped wires 16 are implanted on the outer periphery of the barrel 15 such that the wires 16 form a helical bank extending from the one to the other end of the barrel 15, the grouped wires 16 only in a limited area concurrently abut on the outer periphery of the roll 1, so that a widthwise profile of the outer periphery of the roll 1 does not directly affect the brush 13.
  • contact pressure of the grouped wires 16 against the roll 1 can be ensured and any attached oxide layer can be reliably removed from the outer periphery of the roll 1.
  • the urging force of the brush 13 may be small, a mechanism such as pushing cylinder for urging the brush 13 against the roll 1 may be of small size and drive energy required for rotation of the brush 13 may be reduced.
  • the dust during the cleaning enters via the great number of suction holes 14 into the inner space of the barrel 15 and is instantly discharged out of the cowling 20 via the dust suction port 18 and since the implanted density of the grouped wires 16 is low, the dust has much difficulties for its entering into the grouped wires 16, thus the cleanness of the brush 13 can be kept high.
  • the dust can be quickly an reliably sucked and discharged through the suction holes 14 and from the barrel 15, Since the brush 13 is sheathed by the cowling 20, the dust can be favorably prevented from being scattered around the brush 13. This also makes it easy to generate negative pressure around the brush 13 within the cowling 20 relative to the environment outside the cowling 20, so that dust recovery by actuation of the exhaust blower 10 can be efficiently conducted.
  • the steel strip 3 delivered from the rolls has tendency of having not irregular but equal widthwise thickness distribution, resulting in prevention of cracks on the strip.
  • Fig. 5 shows a variation of the brush 13 where, in addition to the helical bank by the grouped cleaning wires 16, grouped cleaning wires 22 are implanted on the outer periphery of the barrel 15 to provide a further helical bank from the one to the other end of the barrel, whereby totally the two banks are provided.
  • the grouped wires 16 and 22 may be of the same kind for uniform cleaning effect; if the grouped wires 16 and 22 are varied in length (from the outer periphery of the barrel 15 to the tips of the wires), diameter and/or material quality between the banks, different cleaning effects can be obtained.
  • Fig. 6 shows a further variation of the brush 13 where grouped cleaning wires 23 are implanted to provide a plurality of equidistantly arranged banks on the outer periphery of the barrel 15 from the one to the other end of the barrel 15.
  • the respective banks of the grouped wires 23 extend obliquely of the axis of the barrel 15 and implanted positions of each of the banks on the one and the other ends of the barrel 15 are offset circumferentially of the barrel 15, the grouped wires 23 only in a limited area concurrently abut on the outer periphery of the roll 1 (see Fig. 3 ), so that a widthwise profile of the outer periphery of the roll 1 does not directly affect the brush 13.
  • contact pressured of the grouped wires 23 against the roll 1 can be ensured and any attached oxide layer can be reliably removed from the outer periphery of the roll 1.
  • the dust during the cleaning enters via the great number of suction holes 14 into the inner space of the barrel 15 and is instantly discharged out of the cowling 20 (see Fig. 2 ) via the dust suction port 18 and since the implanted density of the grouped wires 23 is low, the dust has much difficulties for its entering into the grouped wires 23, thus the cleanness of the brush 13 can be kept high. In other words, even if the dust enters into the grouped wires 23 and/or adheres on the barrel 15, such dust can be quickly and reliably sucked and discharged through the suction holes 14 and from the barrel 15.
  • the suction holes through which dust is sucked are arranged only on the barrel 15; however, suction holes may be also provided on the cowlings 20. More specifically, it is conceivable that the dust on and near the brush 13 may be sucked through the suction holes on the barrel 15 and the suction holes on the cowling 20. Then, catching of the dust may be conducted further reliably.
  • the grouped wires 16 and 22 may be right-handed helical or left-handed helical.
  • the rotational direction of the brush 13 itself has no limitation.
  • a device for cleaning a chilled roll according to the invention may be applied to a twin roll caster which produces a strip from metal other than steel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Cleaning In General (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Brushes (AREA)
EP08867995A 2007-12-28 2008-12-04 Device for cleaning chilled rolls Not-in-force EP2248616B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007338867A JP5320733B2 (ja) 2007-12-28 2007-12-28 冷却ロール清掃装置
PCT/JP2008/003587 WO2009084153A1 (ja) 2007-12-28 2008-12-04 冷却ロール清掃装置

Publications (3)

Publication Number Publication Date
EP2248616A1 EP2248616A1 (en) 2010-11-10
EP2248616A4 EP2248616A4 (en) 2011-06-08
EP2248616B1 true EP2248616B1 (en) 2012-05-30

Family

ID=40823889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08867995A Not-in-force EP2248616B1 (en) 2007-12-28 2008-12-04 Device for cleaning chilled rolls

Country Status (10)

Country Link
US (1) US20100205765A1 (ko)
EP (1) EP2248616B1 (ko)
JP (1) JP5320733B2 (ko)
KR (1) KR20100082864A (ko)
CN (1) CN101909781A (ko)
BR (1) BRPI0821920A2 (ko)
CA (1) CA2700121C (ko)
RU (1) RU2440212C1 (ko)
TW (1) TWI357360B (ko)
WO (1) WO2009084153A1 (ko)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5104943B2 (ja) 2008-03-21 2012-12-19 株式会社Ｉｈｉ ロール研磨装置
JP5691777B2 (ja) 2011-04-14 2015-04-01 株式会社Ihi 粉末圧延装置及び粉末圧延方法
JP2012251217A (ja) * 2011-06-03 2012-12-20 Ihi Corp 粉末圧延装置
DE102011086686A1 (de) * 2011-11-21 2013-05-23 Bayerische Motoren Werke Aktiengesellschaft Bürstenvorrichtung
CN102553846B (zh) * 2011-12-13 2014-04-23 万向电动汽车有限公司 一种压辊自动清洁装置
KR101676127B1 (ko) * 2014-12-18 2016-11-15 주식회사 포스코 비정질 화이버 제조장치
WO2018119551A1 (zh) * 2016-12-26 2018-07-05 宝山钢铁股份有限公司 铸辊辊面清理装置和方法
CN114769216B (zh) * 2022-04-18 2023-02-28 江苏瑞澜特新材料有限公司 一种用于水溶性pva膜的生产设备

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Publication number Priority date Publication date Assignee Title
US3087599A (en) * 1960-07-19 1963-04-30 Osborn Mfg Co Conveyor roll
US3706108A (en) * 1970-12-28 1972-12-19 Eastman Kodak Co Apparatus for cleaning a residual image from a photosensitive member
US5322015A (en) * 1988-02-08 1994-06-21 Baldwin Technology Corporation Rotating brush cleaner system
JPH0377748A (ja) * 1989-08-18 1991-04-03 Nippon Steel Corp 薄板連続鋳造機用のブラシ装置
NO305738B1 (no) * 1990-06-14 1999-07-19 Baldwin Technology Corp Trykkingsanordning omfattende roterende t°rr-b°rsteorgan
JPH0735641Y2 (ja) * 1990-06-18 1995-08-16 新日本製鐵株式会社 ベルト式連続鋳造機用ロールブラシ
US5160187A (en) * 1991-10-17 1992-11-03 Drumm Arthur E Strip brush for mounting on a rotary drum
JP3188134B2 (ja) * 1995-05-15 2001-07-16 三菱重工業株式会社 双ドラム式鋳造装置用ブラシ装置
JP2879031B1 (ja) * 1997-09-29 1999-04-05 総武スチレン株式会社 畳芯材発泡スチロール板の残存縫糸片の除去方法及びその残存縫糸片と付着塵埃の除去装置
AUPP414398A0 (en) 1998-06-17 1998-07-09 Bhp Steel (Jla) Pty Limited Strip casting apparatus
KR100489242B1 (ko) * 2000-08-24 2005-05-17 주식회사 포스코 쌍롤식 박판주조기의 롤 표면 세척용 브러싱장치
DE10333215A1 (de) * 2003-07-22 2005-02-17 Sms Demag Ag Verfahren zur Formgebung einer Walzen-Reinigungsbürste und nach dem Verfahren ausgeformte Reinigungsbürste
KR101031560B1 (ko) * 2007-05-21 2011-04-27 삼성전자주식회사 흡입구조립체 및 이를 구비한 진공청소기

Also Published As

Publication number Publication date
BRPI0821920A2 (pt) 2015-09-22
CN101909781A (zh) 2010-12-08
TW200936263A (en) 2009-09-01
EP2248616A4 (en) 2011-06-08
JP2009154203A (ja) 2009-07-16
JP5320733B2 (ja) 2013-10-23
TWI357360B (en) 2012-02-01
EP2248616A1 (en) 2010-11-10
WO2009084153A1 (ja) 2009-07-09
CA2700121C (en) 2011-11-29
US20100205765A1 (en) 2010-08-19
RU2440212C1 (ru) 2012-01-20
CA2700121A1 (en) 2009-07-09
KR20100082864A (ko) 2010-07-20

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