GB2474497A - Aligning Device for High Aspect Ration Slabs or Plates - Google Patents

Aligning Device for High Aspect Ration Slabs or Plates Download PDF

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Publication number
GB2474497A
GB2474497A GB0918206A GB0918206A GB2474497A GB 2474497 A GB2474497 A GB 2474497A GB 0918206 A GB0918206 A GB 0918206A GB 0918206 A GB0918206 A GB 0918206A GB 2474497 A GB2474497 A GB 2474497A
Authority
GB
United Kingdom
Prior art keywords
work
work piece
transport
rollers
path
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.)
Granted
Application number
GB0918206A
Other versions
GB0918206D0 (en
GB2474497B (en
Inventor
Nick Champion
Martyn Jones
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.)
Primetals Asset Management UK Ltd
Original Assignee
Siemens VAI Metals Technologies 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 Siemens VAI Metals Technologies Ltd filed Critical Siemens VAI Metals Technologies Ltd
Priority to GB0918206A priority Critical patent/GB2474497B/en
Publication of GB0918206D0 publication Critical patent/GB0918206D0/en
Priority to EP10187027.7A priority patent/EP2314391A3/en
Priority to BRPI1003811-6A priority patent/BRPI1003811A2/en
Priority to CN2010105148401A priority patent/CN102039321A/en
Priority to RU2010142550/02A priority patent/RU2010142550A/en
Priority to KR1020100101977A priority patent/KR20110043482A/en
Priority to JP2010234453A priority patent/JP2011083824A/en
Priority to US12/907,129 priority patent/US20110088445A1/en
Publication of GB2474497A publication Critical patent/GB2474497A/en
Application granted granted Critical
Publication of GB2474497B publication Critical patent/GB2474497B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • 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
    • 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
    • B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B2001/028—Slabs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/12—End of product
    • B21B2273/14—Front end or leading end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/22—Aligning on rolling axis, e.g. of roll calibers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/12—Arrangement or installation of roller tables in relation to a roll stand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/20—Revolving, turning-over, or like manipulation of work, e.g. revolving in trio stands

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Metal Rolling (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)

Abstract

A rolling mill is disclosed having means for aligning a work piece with the work rolls 2. A beam 6 having a face or edge providing an alignment datum is introduced to the path of the work piece which is contacted with, and pushed against the face by the roller table. After the work piece is aligned, the beam is raised and the work piece proceeds to the working rolls. The beam may be moved by hydraulic cylinders and tapered or stepped rollers 8A in the roller table may be used to assist work piece alignment.

Description

Aligning Device for High Aspect Ratio Stabs or Plates The invention is concerned with rolling meta' p'ates or stabs in p'ate mills.
When turning a siab prior to the first pass in a roUng stand or a p'ate in ear'y passes, the aspect ratio of the piece can be high, e. the width is much greater than the ength.
Because the piece is on'y supported on a few tab'e rollers it is usually skewed as it enters the rolling stand work roll bite. This causes one eading corner of the piece to be rolled ahead of the other resufting in a non square p'ate.
This prob'em has been addressed by a number of approaches in the prior art. n some instances the piece has been run into the faces of the work rolls, using the roller tab'e, in an attempt to allgn the piece prior to rolling. The piece is then backed away a short distance before reversing and entering the work roll bite for rolling. This has been controlled by the rolling stand automation system.
This approach gives inconsistent resu'ts because the piece does not a'ways fully allgn.
This method a'so requires that the work roll gap is reduced or c'osed, necessitating the need for additiona' set-up time to open the work roll gap to the correct setting for the rolling pass, resu'ting in reduced productivity. This method a'so has potentia' for damaging the work rolls.
There remains a need for a reiabie means for allgning stabs or p'ates, particuary those having a high aspect ratio, prior to entry of the rolling stand work bite.
According to the invention, a rolling mill comprises the features set out in c'aim I attached hereto. The mechanical stop may be conveniently realised as a beam located above the roller table. The beam may be moved between positions by hydraulic cylinders.
In a preferred embodiment, the roer table comprises a first region having a plurality of transport rollers of constant diameter, hereafter referred to as the linear region, and a second region, hereafter referred to as the turntable region, having a p'urality of tapered or stepped transport ropers with different diameter from a first end to a second end, alternate tapered or stepped transport roUers being arranged with their first ends at a first side of the roUer table and a second side of the roller table respectively and further characterized in that the linear region extends from at least two roll pitches in front of the mechanical stop along the direction of transport up to the rolling miU.
The invention will now be described, by non-limiting example, with reference to the attached figures in which: Figure 1 il'ustrates the process of aUigning a work piece in a rolling mill according to the
prior art;
Figure 2 il'ustrates the allignment process using the method and apparatus of the present invention; Figure 3 il'ustrates a rolling mill having a roller table comprising a turntable region and
a linear region according to the prior art and
Figure 4 il'ustrates a rolling mill having a roller table comprising a turntable region and a linear region according to the invention.
Referring to figures Ia and 1 b, in a rolling mill according to the prior art, the work piece I is first advanced a'ong roller table 7 (comprising transport roUers 8a) against the work rolls 2 with the roll gap 3 being reduced or closed (the thick arrows indicate the direction of movement of the work piece). This causes the leading face 4 of the workpiece to align itself parallel with the surfaces of the work rolls.
The work piece 1 is then retracted from the work rolls 2 (figure lc) and the rol' gap 3 is opened before the work piece I is again advanced (figure Id) to enter the roll gap 3 for rolling.
Referring to figure 2, the invention comprises a mechanicai stop mounted on the front of the roUing mifl stand housing 5. By way of examp'e, the stop is convenient'y reased as a beam 6 mounted above and across the roUer tab'e 7 and having a face or edge 9 parae to the axes of the work roUers 2 and serving as a datum for aUgnment of the workpiece 1. The beam can be owered into position or lifted clear via hydrauc cynders. f the piece is to be aligned before entering the rolng mifi work ro bite the beam is lowered into position and the piece is transported against face 9 to align it (figs 2a -2c). Once the piece is aligned the beam is lifted clear. The piece is then transported to the work roUs 2 for the next roUing pass (fig 2d).
Referring to figure 3, a conventional roUing miU effects turning of the work piece I by a turntable region 7b of the roUer table 7. The turntable region comprises a set of tapered or stepped transport ropers 8b arranged in an altemaUng pattern such that the first, third, fifth etc. roers are arranged with their greatest diameter at one side of the table; and the second, fourth, sixth etc. rollers are arranged with their greatest diameter at the other side of the table.
Rotation of all tapered or stepped rollers 8b in the same direction causes a work piece to to move linearly along the roller table whereas rotating alternate tapered or stepped rollers in the opposite direction causes a work piece located thereon to rotate.
The roller table typically includes a linear region 7a comprising a few constant diameter rollers 8a, over which the work piece passes immediately before entering the work roll bite.
The work piece 1 is particularly susceptible to misalignment when located on the turntable region 7b. Hence, in a preferred embodiment of the invention the linear region 7a is extended (Figure 4), making it easier to achieve alignment of the work piece against the beam 6 and to maintain this alignment from the mechanical stop up to the roll gap 3. The invention is particularly concerned with work pieces having a high aspect ratio such that its width is greated than its length and the shortest work piece that can be handled is typically about two roller pitches in length. Hence the benefit of this feature is maximized where the length of the linear region 7a (in the direction orthogonal to the axes of the work rollers 2, see thick arrows) is such that it extends from at least two roller pitches in front of the beam 6 up to the work rolls 2.

Claims (5)

  1. Claims 1. A roing mifi comprising: a roUer table having a pluraty of transport ropers, operable to transport a work piece to a pair of cooperating work roUers, characterised by a mechanical stop having a face or edge paraUel with the rotational axes of the work roers, the stop being moveable between a first position in the path of a work piece being transported to the work rollers and a second position clear of said path.
  2. 2. A roUing mill according to claim 1, where the mechanical stop is realised as a beam located above the roUer table.
  3. 3. A rolling mill according to claim 2, where the beam is moveable between the first and second positions by operation of hydraulic cylinders.
  4. 4. A rolling mill according to claim 1, 2 or 3, wherein the roller table comprises a first region having a plurality of transport rollers of constant diameter and a second region having a plurality of tapered or stepped transport rollers with different diameter from a first end to a second end, alternate tapered or stepped transport rollers being arranged with their first ends at a first side of the roller table and a second side of the roller table respectively and further characterized in that the first region extends along the direction of transport from at least two roller pitches in front of the mechanical stop up the work rollers.
  5. 5. A method of rolling a work piece on a rolling mill comprising: introducing a mechanical stop, having a face or edge providing an alignment datum, to a path of the work piece along a roller table to work rolls; transporting the work piece, via the roer table, and driving the work piece against the face to effect allignment therewith; raising the mechanincal stop clear of the path of the work piece and transporting the work piece to the work rolls.
GB0918206A 2009-10-19 2009-10-19 Aligning device for high aspect ratio slabs or plates Expired - Fee Related GB2474497B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB0918206A GB2474497B (en) 2009-10-19 2009-10-19 Aligning device for high aspect ratio slabs or plates
EP10187027.7A EP2314391A3 (en) 2009-10-19 2010-10-08 Aligning device for high aspect ratio slabs or plates
BRPI1003811-6A BRPI1003811A2 (en) 2009-10-19 2010-10-15 Alignment device for wide width to length plates or plates
RU2010142550/02A RU2010142550A (en) 2009-10-19 2010-10-18 LEVELING DEVICE FOR SLABS OR THICK SHEETS WITH A HIGH ATTITUDE WIDTH TO LENGTH
CN2010105148401A CN102039321A (en) 2009-10-19 2010-10-18 Aligning device for high aspect ratio slabs or plates
KR1020100101977A KR20110043482A (en) 2009-10-19 2010-10-19 Aligning device for high aspect ratio slabs or plates
JP2010234453A JP2011083824A (en) 2009-10-19 2010-10-19 Aligning device, rolling mill and rolling method for material to be worked having rectangular contour
US12/907,129 US20110088445A1 (en) 2009-10-19 2010-10-19 Aligning device for high aspect ratio slabs or plates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0918206A GB2474497B (en) 2009-10-19 2009-10-19 Aligning device for high aspect ratio slabs or plates

Publications (3)

Publication Number Publication Date
GB0918206D0 GB0918206D0 (en) 2009-12-02
GB2474497A true GB2474497A (en) 2011-04-20
GB2474497B GB2474497B (en) 2011-09-07

Family

ID=41462500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0918206A Expired - Fee Related GB2474497B (en) 2009-10-19 2009-10-19 Aligning device for high aspect ratio slabs or plates

Country Status (8)

Country Link
US (1) US20110088445A1 (en)
EP (1) EP2314391A3 (en)
JP (1) JP2011083824A (en)
KR (1) KR20110043482A (en)
CN (1) CN102039321A (en)
BR (1) BRPI1003811A2 (en)
GB (1) GB2474497B (en)
RU (1) RU2010142550A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101320119B1 (en) * 2011-09-29 2013-10-18 현대제철 주식회사 Transferring apparatus for rolling mill
DE102012224505A1 (en) * 2012-12-28 2014-07-03 Sms Siemag Aktiengesellschaft Apparatus and method for laterally guiding a rolled or cast product on a transport line
CN105921552B (en) * 2016-05-05 2018-01-26 重庆钢铁集团设计院有限公司 A kind of rolled plate spray printing induction system
CN105834231B (en) * 2016-05-05 2018-01-26 重庆钢铁集团设计院有限公司 A kind of steel plate roller-way conveys turning method of adjustment
CN110883091A (en) * 2019-11-18 2020-03-17 张家港宏昌钢板有限公司 Operation method for effectively controlling oblique angle of rolled large plate

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GB1348508A (en) * 1970-03-14 1974-03-20 Eumuco Ag Fuer Maschinenbau Apparatus for elongating material by rolling

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Also Published As

Publication number Publication date
US20110088445A1 (en) 2011-04-21
RU2010142550A (en) 2012-04-27
GB0918206D0 (en) 2009-12-02
GB2474497B (en) 2011-09-07
BRPI1003811A2 (en) 2013-02-13
EP2314391A3 (en) 2013-10-16
JP2011083824A (en) 2011-04-28
KR20110043482A (en) 2011-04-27
CN102039321A (en) 2011-05-04
EP2314391A2 (en) 2011-04-27

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20130718 AND 20130724

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20131019