EP3352923A1 - Cage de laminoir et procédé de remplacement de cylindres de travail - Google Patents

Cage de laminoir et procédé de remplacement de cylindres de travail

Info

Publication number
EP3352923A1
EP3352923A1 EP16763476.5A EP16763476A EP3352923A1 EP 3352923 A1 EP3352923 A1 EP 3352923A1 EP 16763476 A EP16763476 A EP 16763476A EP 3352923 A1 EP3352923 A1 EP 3352923A1
Authority
EP
European Patent Office
Prior art keywords
rolling
stand
roll
drive
upper support
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
EP16763476.5A
Other languages
German (de)
English (en)
Other versions
EP3352923B1 (fr
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/fr
Application granted granted Critical
Publication of EP3352923B1 publication Critical patent/EP3352923B1/fr
Active 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
    • 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
    • B21B31/08—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
    • 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

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 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 roll stand in which the rolling stock can pass through the roll stand without hindrance during the roll change, is known from JP 2006 075857 A. Before the roll change a support from the drive-side chock of the lower
  • Working roll raised to raise the upper work roll with its chock and mount in an upper mounting 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 is based on the object, a generic rolling mill and
  • displacement in the sense of the invention not only means a movement of the mounting rail as a whole, for example by displacement 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.
  • lower or upper mounting rail vertical displacement drive, balancing cylinder, carriage part, guide rail,
  • Support beams are used only in the singular, the respective statement basically refers both to the inlet side as well as on the outlet side component of said devices.
  • 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 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 changed even while a to be rolled
  • Walzgut is located in the rolling stand.
  • Such an "in-bar" roll change is very efficient, in particular, on a cast rolling mill which operates in a continuous operation, 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. That the upper mounting rail - by pushing together or moving or
  • Pivoting - can be moved out of the range of the rolling line during the rolling process (retracted operating state), also has the advantage that this is not exposed to critical thermal stress during (hot) rolling or only to negligible extent.
  • the present device can be used very well on a hot rolling mill.
  • the upper support rails each have a sliding guide track, in which the drive-side chock of the upper
  • 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. If the cantilever is arranged to extend parallel to the longitudinal extension of the upper work roll, 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, provided for horizontal displacement of the upper side
  • 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.
  • the upper mounting rail is telescopic. As a result, the span of the upper mounting rail over the rolling line can be varied almost arbitrarily.
  • the upper mounting rail is telescopic.
  • 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 support rail can, for example, with the help of already existing mostly on a rolling stand Balancierzylinder as
  • 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 simple, without additional components, without interference edges of inner rails, etc.
  • 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 work roll to be replaced, in particular a used or worn work roll, while the term new work roll means an unused or at least retreaded work roll.
  • the advantages of the method correspond to the advantages mentioned above with reference to the roll stand.
  • the inventive method for removal of the old work rolls has the following steps:
  • 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 - 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. For the active connection of the slide part of the old upper work roll in the upper mounting rails, the upper mounting rails using a
  • 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 stand to the operating side
  • Roll stand transverse to the rolling line.
  • the method according to the invention for the installation of a new work roll has the following steps: knitting-bonding of the slide 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.
  • Roll change locomotive is moved over the upper support rail in the direction of the drive-side part of the rolling stand. After installation, 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 mounting rail with the guide rails only for
  • 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 with at least two displacement axes relative to the rolling line on the
  • FIGS. 4 and 4a show a cross section through the roll stand according to FIG. 3;
  • Figure 5 shows a longitudinal section through the rolling stand with largely extended work rolls in a roll change.
  • 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 rolls and clamp 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
  • 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 comprises the following steps (initial situation is the situation shown in Figure 1 and Figure 2, in which the rolling stand 4 and the work rolls 2 and 3 are in rolling operation):
  • the lower work roll 3 is moved down, d. H. lowered downwards from metal strip 10, which is carried by adjacent rolling stands and preferably further rolled by these,
  • FIG. 2 shows a cross section through the drive-side roll stand 16, the balancing cylinder 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.
  • Guide rail 65, 66 is thus movable by means of Balancierzylinder in the vertical direction 39.
  • 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 can be seen in particular in Fig. 2a.
  • 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 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 user-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; see FIG. 3.
  • the further procedure for the removal of the work rolls 2 and 3 according to the invention is described below with reference to FIGS. 3 to 5:
  • FIG. 3 it can be seen that the piston parts 77 of the balancing cylinders 76 and the operating-side support bolts 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.
  • the lower work roll 3 is 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.
  • Roll change locomotive 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 typically pulled out into the rolling line during the extension of the upper work roll 2. 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 stationary in the horizontal direction
  • FIGS. 4 and 4a show the situation described with closed gap 73 in a cross-sectional representation of the drive-side roll stand 16.
  • Figure 5 shows the end of the extension process of the work rolls 2 and 3. Die
  • the installation of the new work rolls is basically in the reverse order and in the reverse direction of movement of the work rolls and the support rails as the expansion of the just described
  • 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 thus provides for the misuse of a balancing cylinder 76 which is present anyway in the roll stand 4, namely here to the vertical

Landscapes

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

Abstract

L'invention concerne une cage de laminoir (4) comportant des cylindres de travail (2, 3) logés dans la cage de laminoir. La cage de laminoir comporte au moins un rail porteur supérieur (55, 56) logé sur le support de cage de laminoir (16) côté entraînement et orienté perpendiculairement à une ligne de laminoir (8) s'étendant à travers la cage de laminoir. L'invention vise à maintenir libre un espace situé dans la cage de laminoir, au-dessus de la ligne de laminoir, pendant le laminage, hormis lors du remplacement des cylindres, tout en permettant un remplacement efficace des cylindres. A cet effet, le rail porteur supérieur (55, 56) est conçu de façon à être déplacé dans la ligne de laminoir et hors de celle-ci à partir du support de cage de laminoir côté entraînement.
EP16763476.5A 2015-09-24 2016-09-01 Cage de laminoir et procédé de remplacement de cylindres de travail Active EP3352923B1 (fr)

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 (fr) 2015-09-24 2016-09-01 Cage de laminoir et procédé de remplacement de cylindres de travail

Publications (2)

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

Family

ID=56896521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16763476.5A Active EP3352923B1 (fr) 2015-09-24 2016-09-01 Cage de laminoir et procédé de remplacement de cylindres de travail

Country Status (10)

Country Link
US (1) US11565292B2 (fr)
EP (1) EP3352923B1 (fr)
JP (1) JP6615330B2 (fr)
KR (1) KR102068085B1 (fr)
CN (1) CN108025340B (fr)
DE (1) DE102015218360A1 (fr)
MX (1) MX2018003484A (fr)
RU (1) RU2686696C1 (fr)
UA (1) UA120467C2 (fr)
WO (1) WO2017050535A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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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Also Published As

Publication number Publication date
US11565292B2 (en) 2023-01-31
JP2018528080A (ja) 2018-09-27
JP6615330B2 (ja) 2019-12-04
DE102015218360A1 (de) 2017-03-30
WO2017050535A1 (fr) 2017-03-30
CN108025340A (zh) 2018-05-11
UA120467C2 (uk) 2019-12-10
KR102068085B1 (ko) 2020-01-20
MX2018003484A (es) 2018-11-09
RU2686696C1 (ru) 2019-04-30
EP3352923B1 (fr) 2019-11-06
US20180272398A1 (en) 2018-09-27
CN108025340B (zh) 2020-12-08
KR20180043796A (ko) 2018-04-30

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