EP3352923B1 - Walzgerüst und verfahren zum wechseln von arbeitswalzen - Google Patents

Walzgerüst und verfahren zum wechseln von arbeitswalzen Download PDF

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Publication number
EP3352923B1
EP3352923B1 EP16763476.5A EP16763476A EP3352923B1 EP 3352923 B1 EP3352923 B1 EP 3352923B1 EP 16763476 A EP16763476 A EP 16763476A EP 3352923 B1 EP3352923 B1 EP 3352923B1
Authority
EP
European Patent Office
Prior art keywords
roll
drive
roll stand
upper support
rolling
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
EP16763476.5A
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German (de)
English (en)
French (fr)
Other versions
EP3352923A1 (de
Inventor
Dietmar FONTAYNE
Stephan Fischer
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 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 EP3352923A1 publication Critical patent/EP3352923A1/de
Application granted granted Critical
Publication of EP3352923B1 publication Critical patent/EP3352923B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/106—Vertical displacement of rolls or roll chocks during horizontal roll changing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/203—Balancing rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/12—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by vertically displacing

Definitions

  • the invention relates to a rolling stand according to the preamble of claim 1 and a method for changing work rolls supported in the rolling stand according to the preambles of claims 7 and 9.
  • the rolling stand can be provided for use in cold or hot rolling plants.
  • the rolling stand can be, for example, a Mae-West stand.
  • the rolling stock is preferably a metal profile or a metal strip.
  • the invention also relates to a new use for balancing cylinders supported on a rolling stand which normally serve to balance an upper support roll.
  • a rolling stand in which the rolling stock during the roll change, the rolling stand can continue to pass unhindered, is from the JP 2006 075857 A known.
  • a support from the drive-side chock of the lower work roll is raised to lift the upper work roll with its chock and mount in an upper support rail.
  • the mounting rail extends continuously from the drive side to the operating side of the rolling stand and is firmly mounted on both sides.
  • the support is lowered again below the level of the rolling stock before the extension of the work rolls begins.
  • the upper and lower work rolls are then extended together across the rolling line from the rolling mill, while the rolling passes through the rolling mill.
  • the invention has for its object to further develop a generic rolling mill and method such that the space in the roll stand on the rolling line during rolling - except for a roll change - remains free. Furthermore, a roll change should be made much more efficient.
  • locate within the meaning of the invention means not only a movement of the mounting rail as a whole, z. B. by moving or pivoting, but also "telescopic". That is, a movement of the support rail out of itself, e.g. in the sense of extendable / extendable or collapsible / shortenable.
  • work roll preferably describes those rolls which are in direct contact with it for rolling a rolled product.
  • rolling line describes a distance along which the rolling stock is conveyed for rolling in the rolling direction.
  • the drive side describes the side of the rolling stand or the work rolls, on which drives are coupled to the work rolls.
  • the operating side is arranged opposite to the drive side and describes the side which is free of drives in order to be able to pull the work rolls for roll change out of the roll stand.
  • hold does not mean fixed, but only “held” contrary to gravity. A movement (the mounting rail) in particular in the horizontal or vertical direction is possible.
  • the upper support rail is advantageously stored virtually trouble-free.
  • the upper support rail is held only on a guide rail, in which it is mounted horizontally displaceable on the drive side stand and stand, for example, designed so that it can be removed by pushing together towards the drive side temporarily from the range of the rolling line, the space above the rolling line advantageously haven before and be kept free of the support rail after a roll change.
  • the upper support rail formed in this way does not interfere with the operator-side roll stand, so that the rolling stand is always particularly accessible from the operating side.
  • the upper work roll can be replaced even then, while a rolling stock to be rolled is in the rolling stand.
  • Such an "in-bar" roll change is very efficient.
  • the present device for roll change of work rolls can be used advantageously, since in this case a continuous casting process for a roll change does not have to be interrupted.
  • the upper support rail can be designed to be so short, in particular with a corresponding design of the sledge part provided on the chock of the upper work roll, that it does not protrude into the rolling line or only negligibly.
  • the upper support rails each have a sliding guide track, in which the drive-side chock of the upper work roll is guided over a slide member advantageously reliable and low friction slidably. This is advantageous for a reliable interaction between the present carrying device and the upper work roll.
  • the carriage part is arranged at the far end of a cantilever arm of the drive-side chock of the upper work roll, the cantilever, projecting from the drive-side chock, preferably in the direction of the drive-side stand.
  • the upper work roll can correspond very well with the upper support rail.
  • the slide part can advantageously engage transversely in the upper support rail.
  • the upper support rails can be moved particularly space-saving, if they are arranged linearly displaceable on the drive-side stand of the rolling stand. Alternatively, however, they can also be made movable, for example, by pivoting out of the rolling line.
  • a drive device for example an external change carriage, is provided on the operator side for horizontal displacement of the upper work roll.
  • the upper support rail In a coupling of the upper work roll on their slide member with the upper support rail, the upper support rail can be moved horizontally with a horizontal displacement of the upper work roll.
  • the upper mounting rail must then have no own drive, in particular no own linear drive. Alternatively, however, its own drive for displacing the mounting rail or parts thereof may be provided.
  • a particularly advantageous embodiment provides that the upper mounting rail is telescopic.
  • the span of the upper mounting rail over the rolling line can be varied almost arbitrarily.
  • the upper mounting rail can build very short when it is in a retracted state.
  • the upper support rail can thus be moved completely out of the area of the rolling line, so that it can be well protected from thermal influences from the rolling line.
  • the upper support rail is horizontally telescoped so that it can span the rolling line at least as far as cantilevered in an extended state that the upper work roll at least partially supported by this upper support rail and can be reliably displaced transversely to the rolling line.
  • the vertical displaceability of the upper mounting rail can be done, for example, with the help of usually already present on a rolling stand Balancierzylinder as vertical displacement devices.
  • the Balancierzylinder can be used immediately as a height adjustment of the upper support rail and beyond the upper work roll. This results in the advantage of large roll outlets very easy to realize without additional components, without interference edges of inner rails, etc. But other vertical displacement devices or - drives are conceivable for the upper support rail.
  • the vertical displaceability of the upper support rail advantageously allows a contact between the upper support rail and in particular the chock of the upper work roll to be manipulated.
  • the upper work roll for a roll change can only be raised or lowered by the upper support rail. This makes it possible that the upper support rail preferably only comes into operative contact with the upper work roll or with their chock when a work roll change is present. Otherwise, the upper work roll can move vertically vertically during the actual rolling process.
  • the object of the invention is further achieved by a method according to claim 7 for removing an old roll from the rolling stand and by a method according to claim 9 for installing a new roll in the roll stand.
  • old work roll means a to be replaced, in particular a used or worn work roll.
  • new work roll means a not yet used or at least retreaded work roll.
  • the inventive method for removal of the old work rolls has the following steps: Vertical process of the upper support rail upwards for the active joining of the carriage parts assigned to the old upper work roll into the upper support rail; and further vertical movement of the upper support rail for lifting the mounted in the support rail old upper work roll. Subsequently, the upper support rail - starting from the drive-side roll stand - along a transverse to the rolling direction alternating displacement cantilever shifts into the rolling line before or while the old upper work roll - the drive side mounted in the upper support rail - is moved out of a rolling stand out.
  • the extraction from the roll stand is typically carried out with an external pulling device, for example, a roll changing locomotive. Due to the drive-side connection between the work roll and the upper support rails, the upper support rails are also displaced into the rolling line when the work roll is withdrawn.
  • the upper support rails are vertically raised by means of a vertical displacement drive, preferably in the form of the backup roll balancers, other support roll balancers are equally well suited.
  • the old upper work roll is at least at its end facing the drive side stand supported by the cantilevered top support rail until the drive-side chock of the upper work roll on a lower, placed on the operating side roll side support means, preferably on one on the drive-side chock of the lower work roll arranged support, can be discontinued. Only then can the upper work roll be released from the upper support rail.
  • the upper support rail moves, at least partially, in this case with the same displacement direction of the work rolls and preferably synchronously from the drive-side roll stand to the operating-side roll stand transversely to the rolling line.
  • the inventive method for installation of a new work roll has the following steps: Effective joining of the carriage part assigned to the new upper work roll into the upper support rail.
  • the upper mounting rail is displaced more and more out of the rolling line in the direction of the drive side, for example, shortened, the farther the new upper work roll with the help of an external pusher, z.
  • B. the roll changing locomotive is moved over the upper support rail in the direction of the drive-side part of the mill stand.
  • the upper mounting rail is off removed from the rolling line; It thus releases the installation space above the upper work roll during the actual rolling process.
  • the two work rolls of the roll stand can be exchanged while the rolling stock is conveyed further in the rolling direction between the driven work rolls and / or while the rolled stock is being rolled simultaneously by the work rolls of further rolling stands in a rolling train.
  • a vertical freedom of movement of the upper work roll during the actual rolling of a rolling stock can be easily maintained when the upper support rail is displaced only vertically, to make a contact-type engagement between one of the upper work roll associated slide member and the upper support rail. This means that the upper support rail is brought into operative contact with the guide rails only for roll change.
  • the upper support rails are arranged not only in the horizontal direction - at least partially - displaceable relative to the rolling line, but preferably also in the vertical direction.
  • the upper support rail is not stationary relative to the rolling line held, but stored with at least two displacement axes relative to the rolling line on the drive-side rolling line side.
  • FIG. 1 shows a longitudinal section through a rolling stand 4.
  • An upper work roll 2 and a lower work roll 3 form a pair of rollers and clamped on a rolling line 8 a nip in which a rolling stock 10 is rolled.
  • the rolling stock 10 is, for example, flat metal strip.
  • the rolling line 8 extends in the rolling direction 15 between a drive-side roll stand 16 and an operating-side roll stand 17 of the rolling stand 4.
  • the drive-side roll stand 16 is characterized in that there is a drive unit (not shown) for rotationally driving the work rolls 2 and 3 is arranged.
  • the upper work roll 2 is rotatably mounted in a drive-side chock 31 and in an operating-side chock 41.
  • the lower work roll 3 is rotatably mounted in a drive-side chock 32 and in a user-side chock 42.
  • the chocks 31, 41, 32 42 also called bearing housing, are in turn, slidably mounted in the rolling stand 16, 17 in the vertical direction 39. You can also be moved in the horizontal direction, but this feature is not mandatory for the present invention.
  • the method according to the invention for the flying change of work rolls 2, 3 held in the roll stand 4 will be described in more detail below while the rolling operation is in progress.
  • the roll change relates on the one hand the expansion or extension of old work rolls from the rolling stand 4 and on the other hand, the installation or retraction of new work rolls in the frame 4 inside.
  • the removal of the old work rolls and in particular the old upper work roll includes the following steps (starting situation is the in FIG. 1 and FIG. 2 shown situation, in which the rolling stand 4 and the work rolls 2 and 3 are in rolling operation): First, the lower work roll 3 is moved down, that is lowered down from metal strip 10, which is supported by adjacent rolling stands and preferably further rolled by these,
  • FIG. 2 shows a cross section through the drive-side roll stand 16, the Balancierzylinder 76 and the Balancierzylinder piston part 77 and a rear view of the drive-side roll stand.
  • the Balancierzylinder 76 are based fixed to the roll stands, even on the drive-side roll stand 16 from.
  • the piston member 77 carries at its distal end a guide rail 65, 66.
  • This guide rail 65, 66 is thus movable in the vertical direction 39 with the help of Balancierzylinder.
  • the guide rail 65, 66 is formed in the form of a U-profile and an upper support rail 55, 56 is mounted horizontally displaceable or sliding in the guide rail 65.
  • the upper support rail 55, 56 has a sliding guide track 70.
  • the gap 73 between the slide member 60 and the support rails 55, 56 is particularly in Fig. 2a recognizable.
  • the Balancierzylinder piston member 77 is displaced together with the guide rail 65, 66 and the upper support rail 55 mounted therein vertically upwards for picking up and Supporting the chock 31 of the upper work roll 2 via the slide member 60.
  • the process described takes place simultaneously on the inlet side E and on the outlet side A of the drive-side roll stand 16.
  • the slide members 60 After supporting / under hooking the slide members 60 are guided horizontally displaceable in the sliding guide track 70 of the upper support rails in the direction of the longitudinal axes of the work rolls.
  • the in the FIGS. 1 . 2 and 2a (Operating position) shown gap 73 is closed
  • the slide members 60 are fixedly connected via cantilevers 72 to the drive-side chock 31 of the upper work roll 2.
  • the cantilevers 72 are provided on the inlet side and the outlet side of the chock and preferably extend in the direction of the drive-side roll stand.
  • the slide parts are typically arranged in each case at the far end of the cantilever arms 72.
  • a support pin 46 is extended in the vertical direction 39 and against the opposite operator-side chock 41 of the operating side to prepare the roll change from the service-side chock 42 of the lower work roll 3 upper work roll 2 employed from below; please refer FIG. 3 ,
  • FIG. 3 It can be seen that the piston parts 77 of the balancing cylinder 76 and the operator-side support bolt 46 were simultaneously moved further upwards, so that the upper work roll 2 is lifted off the rolling stock 10. Furthermore, the lower work roll 3 has been lowered so far that it is supported with their chocks on a lower support rail 48; on this support rail 48, which is aligned parallel to the guide rail 66 and the upper support rail 55, the lower work roll 3 is transverse to Rolling line 8 slidably mounted. In contrast to the guide rail 66 and also to the upper support rail 56, the lower support rail 48 is formed continuously from the drive to the operating side of the rolling mill both on the inlet and on the outlet side.
  • FIG. 3 is, as I said, the lower work roll 3 supported on the lower support rails 48.
  • the upper work roll is supported on the operating side via the extended support pin 46 on the lower work roll.
  • the upper work roll 2 on the drive side as described, supported on the piston part 77 of the Balancierzylinders 76 and slidably mounted on the slide rail portion 56 on the upper support rail 56.
  • the upper work roll 2 and the lower work roll 3 by means of an external traction device, for. B. a roll changing locomotive (not shown) transversely to the rolling direction 15 from the rolling stand 4 extendable.
  • the rolling stock 10 is not touched; rather, the rolling operation during the change and in particular the removal of the work rolls can be continued.
  • the reduction of the rolling stand 4 must then be taken over by adjacent rolling stands with.
  • the upper support rail 56 is pulled out during the extension of the upper work roll 2 typically with in the rolling line. This is typically done in that the slide member 60 when moving out and when sliding on the upper support rail 55 meets a stop of the upper support rail, which then the upper support rail in turn is displaced with in the rolling line. In this case, the upper support rail 56 slides in the horizontally fixed guide rail 66th
  • FIGS. 4 and 4a show the situation described with closed gap 73 in a cross-sectional view of the drive-side roll stand 16th
  • FIG. 5 shows the end of the extension process of the work rolls 2 and 3.
  • the work rolls 2 and 3 are now extended in the extension direction transverse to the rolling direction 15 as far out of the rolling stand that their drive-side chocks 31, 32 have passed the rolling stock 10.
  • the upper work roll 2 depends on the drive side only to the extended in the rolling line 8 upper support rails 55, 56 and floats over the rolling stock 10th
  • the second part of the roll change, d. H. the installation of the new work rolls basically takes place in the reverse order and in the opposite direction of travel of the work rolls and the support rails as the expansion of the work rolls just described. Specifically, after the slide members 60 of the drive side chock 31 of the new upper work roll rest on them, the upper support rails 55, 56 shift out of the rolling line more toward the drive side the farther the new upper work roll is shifted toward the drive side. Even when retracting the new upper work roll whose slide member 60 is encountered when sliding on the upper support rails 55, 56 to a stop, which causes the upper support rail 55, 56 is moved out of the rolling line again.
  • the Balancierzylinder piston parts 77 and these together with the guide rails 65, 66 and slidably mounted therein upper support rails 55 are further lowered, whereby the contact between the sled parts 60 and the upper support rails 55, 56 is lost and the gap 73 is formed.
  • the present invention provides for the misuse of a balancing cylinder 76 which is present anyway in the rolling stand 4, namely here for the vertical displacement of a guide rail 55, in particular together with an upper support rail 55 guided therein for supporting the upper work roll 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
EP16763476.5A 2015-09-24 2016-09-01 Walzgerüst und verfahren zum wechseln von arbeitswalzen Active EP3352923B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015218360.2A DE102015218360A1 (de) 2015-09-24 2015-09-24 Walzgerüst und Verfahren zum Wechseln von Arbeitswalzen
PCT/EP2016/070622 WO2017050535A1 (de) 2015-09-24 2016-09-01 Walzgerüst und verfahren zum wechseln von arbeitswalzen

Publications (2)

Publication Number Publication Date
EP3352923A1 EP3352923A1 (de) 2018-08-01
EP3352923B1 true EP3352923B1 (de) 2019-11-06

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Country Status (10)

Country Link
US (1) US11565292B2 (enrdf_load_stackoverflow)
EP (1) EP3352923B1 (enrdf_load_stackoverflow)
JP (1) JP6615330B2 (enrdf_load_stackoverflow)
KR (1) KR102068085B1 (enrdf_load_stackoverflow)
CN (1) CN108025340B (enrdf_load_stackoverflow)
DE (1) DE102015218360A1 (enrdf_load_stackoverflow)
MX (1) MX378722B (enrdf_load_stackoverflow)
RU (1) RU2686696C1 (enrdf_load_stackoverflow)
UA (1) UA120467C2 (enrdf_load_stackoverflow)
WO (1) WO2017050535A1 (enrdf_load_stackoverflow)

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CN109500083B (zh) * 2018-12-28 2024-01-26 中冶南方工程技术有限公司 快速更换上中间辊的六辊轧机及换辊方法
CN110961462B (zh) * 2019-12-17 2025-07-22 中国重型机械研究院股份公司 一种非传动辊安装支座及其使用方法
CN111036683B (zh) * 2020-01-31 2024-12-17 宝钢工程技术集团有限公司 平整机传动侧分段直线导轨换辊横移装置及其使用方法
CN111151581B (zh) * 2020-02-11 2025-02-18 辽宁科技大学 一种二辊轧机手动换辊装置及换辊方法
CN111558620B (zh) * 2020-04-29 2024-10-29 中国重型机械研究院股份公司 一种轧机支承辊的更换方法
CN111922090B (zh) * 2020-07-09 2022-07-15 首钢京唐钢铁联合有限责任公司 精轧机更换工作辊后的水平值自动给定方法及系统
CN112576575B (zh) * 2020-12-16 2022-04-19 太原理工大学 一种四立柱二十辊轧机液压压下系统
CN113294444A (zh) * 2021-05-24 2021-08-24 东风锻造有限公司 一种转子式混砂机的分体式主轴机构
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CN117884854A (zh) * 2024-01-08 2024-04-16 浙江谋皮环保科技有限公司 一种不停机的换辊方法

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RU2686696C1 (ru) 2019-04-30
JP6615330B2 (ja) 2019-12-04
KR20180043796A (ko) 2018-04-30
EP3352923A1 (de) 2018-08-01
JP2018528080A (ja) 2018-09-27
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US11565292B2 (en) 2023-01-31
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