EP3999259B1 - Laminage à froid du produit à laminer - Google Patents

Laminage à froid du produit à laminer Download PDF

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Publication number
EP3999259B1
EP3999259B1 EP20742679.2A EP20742679A EP3999259B1 EP 3999259 B1 EP3999259 B1 EP 3999259B1 EP 20742679 A EP20742679 A EP 20742679A EP 3999259 B1 EP3999259 B1 EP 3999259B1
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EP
European Patent Office
Prior art keywords
working roller
rolling
working
diameter
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
EP20742679.2A
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German (de)
English (en)
Other versions
EP3999259A1 (fr
EP3999259C0 (fr
Inventor
Roland Kellermayr
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Primetals Technologies Austria GmbH
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Primetals Technologies Austria GmbH
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Publication date
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Publication of EP3999259A1 publication Critical patent/EP3999259A1/fr
Application granted granted Critical
Publication of EP3999259C0 publication Critical patent/EP3999259C0/fr
Publication of EP3999259B1 publication Critical patent/EP3999259B1/fr
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Classifications

    • 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
    • B21B27/02—Shape or construction of rolls
    • B21B27/021—Rolls for sheets or strips
    • 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
    • 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
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • 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
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • 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
    • B21B31/07—Adaptation of roll neck bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/28—Mounting or dismounting bearing and chock as a unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2267/00—Roll parameters
    • B21B2267/02—Roll dimensions
    • B21B2267/06—Roll diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/14—Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills
    • B21B35/141—Rigid spindle couplings, e.g. coupling boxes placed on roll necks

Definitions

  • the invention relates to a rolling device, a method and a rolling train for cold rolling rolled stock.
  • the invention relates to a rolling device for cold-rolling rolling stock, comprising a roll stand, a plurality of equipment sets for selectively equipping the roll stand with one of the equipment sets, and a work roll drive.
  • Each equipment set comprises two work rolls and, for each work roll, two work roll chocks assigned to the work roll, each of which has at least one work roll bearing for the work roll, and a spindle head assigned to the work roll, which can be positively connected to a work roll journal of the work roll.
  • the roll stand has holders which are each designed to receive a work roll chock of an equipment set.
  • the work roll drive has two drive spindles, which are each designed to drive a work roll via the spindle head assigned to the work roll by rotations about a longitudinal axis of the drive spindle.
  • Such a rolling device is, for example, from CN 109 647 894 A known.
  • two work rolls which are arranged one above the other and are each mounted in a bearing seat at their axial ends, can be changed in a roll stand with the aid of a roll changing device, which has a base that can be moved on rails, on which the work rolls rest, and a base that can be moved vertically within the roll stand Rail section includes.
  • a rolling stock for example a metallic rolled strip
  • the work rolls are arranged in a roll stand and are rotated about their longitudinal axes by a drive.
  • a plurality of roll stands are often arranged one behind the other and form what is known as a rolling train, through which the rolling stock runs in one rolling direction, with the thickness of the rolling stock being gradually reduced.
  • the rolling speed increases from roll stand to roll stand and the rolling torques decrease from roll stand to roll stand.
  • the number of roll stands and the maximum reduction in thickness cannot be increased at will in terms of process technology, since the material strength of the rolling stock increases depending on the reduction in thickness. Above certain rolling stock strength values and work roll diameters, this leads to high flattening of the work rolls and reduced thickness reduction of the rolling stock.
  • a roll stand In addition to the work rolls, a roll stand usually has so-called back-up rolls, which support the work rolls. Each roll is rotatably mounted at its ends on bearings each carried by a so-called chock installed for vertical sliding in a support of the rolling stand. Because the chocks can be moved vertically, the positions of the rolls can be changed and adapted to one another and to the thickness of the rolling stock. Bending forces can also be exerted on the work rolls via the work roll chocks, with which the work rolls are easily bent during rolling to a to achieve uniform thickness of the rolling stock in the axial direction, i.e. along the longitudinal axes of the work rolls.
  • the work rolls wear out as the rolled stock is rolled. Therefore, the work rolls are ground off after a certain rolling time. This gradually reduces the roll diameter of the work rolls. Finally, the work rolls are replaced when their roll diameters have been reduced to a minimum work roll diameter as a result of grinding.
  • the diameter of a work roll used for the first time is equal to the maximum work roll diameter of the work roll and can be reduced to the minimum work roll diameter by repeated grinding.
  • the difference between the maximum and minimum work roll diameter is determined, among other things, by the so-called hardening depth, which defines the area that extends radially from the surface of a work roll into the interior and has a greater hardness than the remaining material of the work roll.
  • the minimum and maximum work roll diameter of a work roll thus define the work roll diameter range of this work roll, within which the work roll can be used sensibly for rolling: if the work roll diameter were to leave the work roll diameter range due to further grinding, it is no longer used.
  • the minimum work roll diameter is further determined by the rolling parameters (rolling torque, rolling force, roll tensions, rolling speed) and their effect on the selection of the work roll bearings and work roll journals on which the work rolls are driven and which in turn a determine the minimum inner diameter of the work roll bearings.
  • the outside diameter and width of a work roll bearing determine the capacity of the work roll bearing.
  • a recommended minimum wall thickness of the work roll chock corresponds to the outside diameter and the load of the work roll bearing.
  • the rolling parameters are in turn determined by the material properties of the rolling stock and by its entry thickness, exit thickness and width.
  • the rolling of high-strength and ultra-high-strength rolling stock with exit thicknesses of, for example, more than 0.5 mm leads to high rolling forces on all rolling stands and, in particular, to a lower thickness reduction capacity on the rear rolling stands (e.g. on the third and fourth rolling stands) compared to softer rolling stock.
  • the torque requirements are in the higher and highest range.
  • the rolling of very thin, high-strength rolling stock, for example to produce electrical strip steel with a relatively high silicon content and exit thicknesses of less than 0.5 mm leads to high specific rolling forces with moderate torques. In both cases, medium and large work roll diameters lead to high flattening of the work rolls on the rear roll stands, so that in these Cases small work roll diameters are preferred, especially on the rear roll stands.
  • the invention is based on the object of specifying a rolling device, a method and a rolling train which enable the production of different rolled products, in particular rolled products of different hardnesses and thicknesses.
  • a rolling device for cold-rolling rolling stock of the type mentioned at the outset is configured in that the work rolls have a work roll diameter range that is determined by a minimum work roll diameter and a maximum work roll diameter of the work roll, with the work rolls of one and the same equipment set each having the same work roll diameter range and the work rolls of different equipment sets have different work roll diameter ranges from one another. Included the work roll diameter range of one equipment set differs from the work roll diameter range of another equipment set if at least the minimum or maximum work roll diameter of the work rolls of one equipment set differs from the respective minimum or maximum work roll diameter of the work rolls of the other assembly set differs.
  • each equipment set includes work roll chocks corresponding to its two work rolls in order to install the work rolls in the roll stand, and for each work roll a corresponding spindle head, via which the work roll can be driven with a drive spindle of the work roll drive.
  • the roll stand can advantageously be adapted to the respective rolling stock.
  • work rolls with a smaller work roll diameter can be used for rolling high-strength rolling stock than for rolling relatively soft rolling stock.
  • the different overall height of equipment sets with work rolls of different work roll diameter ranges can be compensated for by the vertical displaceability of the chocks in the roll stand.
  • a rolling device is suitable for a large product range of rolled products to be produced.
  • the invention aims to be able to profitably process both relatively soft rolling stock and to be able to produce high-quality, high-strength steel products with small thicknesses, for example thicknesses of less than 0.5 mm, with the same rolling device.
  • the work roll bearings of all equipment sets are designed as roller bearings, for example as tapered roller bearings.
  • the minimum work roll diameter differs by 40 mm to 90 mm from the maximum work roll diameter of a tooling set.
  • the work rolls of one equipment set have a minimum work roll diameter of 340 mm and a maximum work roll diameter of 385 mm
  • the work rolls of another equipment set have a minimum work roll diameter of 375 mm and a maximum work roll diameter of 460 mm.
  • the inner diameters of the work roll bearings of all tooling sets differ from each other by no more than two percent.
  • work rolls with work roll necks of the same neck diameter can be used, so that the spindle heads also have the same inner diameter and the work rolls of all equipment sets can be driven with the same drive spindles.
  • the drive spindles therefore do not have to be changed when converting the roll stand to work rolls with a different work roll diameter.
  • a further embodiment of the rolling device provides that the work roll journals of the work rolls of all equipment sets have identical journal diameters and journal shapes.
  • a diameter ratio of an outer diameter to an inner diameter of a work roll bearing may decrease with a decreasing work roll diameter range of the work rolls of the tooling sets. For example, one Diameter ratio of an outer diameter to an inner diameter of the work roll bearings of at least one equipment set at most 1.41 and a diameter ratio of an outer diameter to an inner diameter of the work roll bearings of at least one other equipment set at most 1.32.
  • the roll stand can be adapted to the corresponding rolling stock classes by selecting the equipment set with a respective diameter ratio of the work roll bearings.
  • the decrease in the diameter ratio of the work roll bearings with the work roll diameter takes into account that the sum of the outer radius of the work roll bearings and the wall thickness of the work roll chocks on the sides facing the rolling stock must be smaller than the minimum work roll radius, otherwise the work roll bearings of the two opposite work rolls in the roll stand collide respectively would stand in their way.
  • a diameter ratio that is as small as possible enables, in particular with a given inner diameter of the work roll bearings, the lowest possible overall height of the work roll chocks and thus small work roll diameters.
  • Small work roll diameters are in turn suitable for rolling high-strength and very high-strength rolling stock, in particular in the rear roll stands of a rolling train, as has already been explained above. Small work roll diameters also make it easier to bend the work rolls, since the bending forces required for bending are reduced.
  • a ratio of a height of a work roll chock to an outside diameter of a work roll bearing of at least one equipment set is less than 1.09.
  • This configuration of the rolling device also aims to reduce the work roll diameter by reducing the height of the work roll chocks.
  • the reduction in the height of a work roll chock is particularly in combination with the above-mentioned reduction in the diameter ratio of the outside diameter to an inside diameter of the work roll bearing.
  • a minimum wall thickness of a work roll chock of at least one equipment set on the side of the work roll chock facing the rolling stock is less than six percent of an outer diameter of a work roll bearing of the work roll chock.
  • a minimum wall thickness of a work roll chock of at least one equipment set on a side facing the rolling stock is at most as great as a minimum wall thickness on a side of the work roll chock facing away from the rolling stock.
  • the aforementioned configurations of the rolling device take into account that with decreasing work roll diameters, the work roll chocks approach one another and thus the risk increases that the work roll chocks collide or get in each other's way.
  • a reduction in the minimum wall thicknesses of the work roll chocks on their sides facing the rolling stock increases the distance between the work roll chocks and thereby enables a further reduction in the work roll diameter without the work roll chocks colliding or getting in the way.
  • the roll stand is equipped with an equipment set that is selected depending on the rolling stock.
  • the work roll diameters in particular are those used for rolling Work rolls adapted to the strength, width, entry thickness and/or exit thickness of the rolling stock.
  • the roll stand is equipped with an equipment set that is selected depending on a position of the rolling device in a rolling train.
  • the position of a rolling device in a (multi-stand) rolling mill is understood to be the position that the rolling mill of the rolling mill occupies in a sequence of all rolling mills of the rolling mill in which the rolling stock passes through the rolling mills.
  • This embodiment of the method according to the invention takes into account that the strength and thickness of the rolling stock as well as the rolling speed and the required rolling torques change along the rolling train, which in turn means that the work roll diameters of the work rolls of a rolling device that are most advantageous for the rolling process can depend on the position of the rolling device in the rolling train.
  • a bending limit for positive bending of the work rolls is defined for at least one equipment set as a function of a minimum wall thickness of the work roll chocks on the sides of the work roll chocks facing the rolling stock, and the work rolls are not positively bent more than the bending limit.
  • This embodiment of the method according to the invention is aimed in particular at the above-mentioned embodiment of a rolling device according to the invention, in which the minimum wall thicknesses of work roll chocks on the sides facing the rolling stock are reduced. A reduction in these wall thicknesses causes a reduction in the load-bearing capacity of the work roll chocks in the event of positive bending of the work rolls.
  • the aforementioned embodiment of the method according to the invention takes this into account by appropriately limiting positive bending of the work rolls.
  • the work rolls of at least one equipment set are bent negatively as a function of a crowning of the work rolls.
  • This embodiment of the method according to the invention also aims to relieve the work roll chocks when the work rolls bend on their sides facing the rolling stock, in that instead of positive bends that particularly stress these sides, negative bends of the work rolls that preferably interact with a crowning of the work rolls are carried out, which results in a suitably designed crowning of the work rolls requires.
  • an axial displacement of the work rolls relative to one another is set for at least one equipment set as a function of the width and thickness of the rolling stock.
  • This allows the strip edges of the rolling stock to be relieved, for example in order to avoid edge cracks in the strip edges, which can occur without relieving the strip edges when rolling stock that is at risk of edge cracking, for example electrical strip steel with a silicon content of at least two percent.
  • such a mutual axial displacement of the work rolls can prevent central areas of the work rolls, in which the work rolls assume their maximum work roll diameter, from touching in the area outside the rolling stock when rolling very thin rolled stock.
  • a rolling train according to the invention has at least one rolling device according to the invention.
  • the advantages of such a rolling train result from the above-mentioned advantages of a rolling device according to the invention.
  • a rolling mill train according to the invention allows the rolling devices according to the invention to be converted as a function of the respective rolling stock, that is to say the adjustment of the equipping of the roll stands Rolling devices on the rolling stock, and thus processing different rolling stock or the production of different rolled products with the same rolling train.
  • FIG. 1 shows a sectional view of an embodiment of a rolling device 1 according to the invention for cold rolling of rolling stock 3.
  • the rolling device 1 comprises a roll stand 5, several equipment sets for selectively equipping the roll stand 5 with one of the equipment sets and a work roll drive.
  • Each assembly set comprises two work rolls 7, 8 and for each work roll 7, 8 two work roll chocks 9 and 9 assigned to the work roll 7, 8 a spindle head 11 assigned to the work roll 7, 8.
  • the two work rolls 7, 8 of one equipment set have the same work roll diameter range, the work rolls 7, 8 of different equipment sets have different work roll diameter ranges.
  • figure 2 shows the work rolls 7, 8 of an assembly set and a rolling stock 3 with a width b that is passed between the work rolls 7, 8.
  • the work roll diameter D of a work roll 7, 8 is a maximum diameter of the work roll 7, 8 and is assumed by the work roll 7, 8 in a central area 13 which is approximately circular-cylindrical and usually ground crowned or bottle-shaped.
  • One end of the central portion 13 of each work roll 7, 8 has a chamfer 15, the chamfers 15 of the two work rolls 7, 8 being arranged opposite to each other.
  • Each end region of a work roll 7, 8 is designed as a work roll journal 16, the journal diameter d of which is smaller than the diameter D of the work roll.
  • the journal diameter d of the work rolls 7, 8 of all equipment sets are the same.
  • the work rolls 7, 8 are axially displaced relative to one another in such a way that the bevels 15 of the two work rolls 7, 8 are each arranged in the region of one of the two lateral strip edges of the rolling stock 3.
  • the strip edges of the rolling stock 3 are relieved during rolling, for example in order to avoid edge cracks in the strip edges, which can occur if the strip edges are not relieved when rolling stock 3 that is at risk of edge cracking, for example electrical strip steel with a silicon content of at least two percent.
  • such a mutual axial displacement of the work rolls 7, 8 can prevent the central regions 13 of the work rolls 7, 8 from touching in the area outside the rolling stock 3 when rolling very thin rolling stock 3.
  • Each work roll chock 9 has a work roll bearing 17 for a work roll journal 16 of a work roll 7 , 8 .
  • the work roll bearing 17 is a rolling bearing, for example a tapered roller bearing, with an inner diameter d1, which corresponds to the journal diameter d of the work roll journal 16, and an outer diameter D1.
  • the inner diameter d1 of the work roll bearings 17 of all equipment sets are at least approximately identical; for example, they deviate from each other by a maximum of two percent.
  • the outer diameters D1 of the work roll bearings 17 of the different equipment sets can differ significantly from one another.
  • a diameter ratio D1/d1 of the outer diameter D1 to the inner diameter d1 of a work roll bearing 17 decreases as the roll diameter D of the work rolls 7, 8 of the tooling sets decreases.
  • this diameter ratio for at least one equipment set, in particular for equipment sets with small work roll diameters D is at most 1.32.
  • a ratio A/D1 of a height A of a work roll chock 9 to the outer diameter D1 of the work roll bearing 17 of the work roll chock 9 for at least one equipment set, in particular for all equipment sets is preferably less than 1.09.
  • the roll stand 5 For rolling a rolling stock 3 with the rolling device 1, the roll stand 5 is equipped with the work roll chocks 9 and work rolls 7, 8 of an assembly set.
  • the roll stand 5 has four holders 19, each of which accommodates a work roll chock 9 and in which the work roll chocks 9 can be displaced vertically, for example by means of hydraulic cylinders (not shown).
  • bending forces can be exerted on the work rolls 7, 8 via the brackets 19.
  • a work roll 7, 8 can be positively bent by a bending force in a first bending force direction 21 directed away from the rolling stock 3.
  • a work roll 7, 8 can be bent negatively by a bending force in a second bending force direction 22 directed towards the rolling stock 3.
  • a second load zone 24 of the work roll chock 9 facing away from the rolling stock 3 is loaded, with figure 1 here acting forces are represented by arrows in the second load zone 24 .
  • the rolling device 1 of the in figure 1 also has back-up rolls 25, which are arranged above and below the holders 19 and are vertically displaceable, so that their positions can be adapted to the work roll diameters D and positions of the work rolls 7, 8.
  • figure 3 shows the work roll neck 16 of a work roll 7, 8, the spindle head 11 assigned to the work roll 7, 8 and a drive spindle 27 of the work roll drive of the rolling device 1 in a sectional view.
  • the spindle head 11 is tubular.
  • An end of the spindle head 11 facing the work roll neck 16 forms an opening whose cross section corresponds to a cross section of the end of the work roll neck 16 and into which the end of the work roll neck 16 protrudes.
  • the cross section of the end of the work roll neck 16 is not circular, but has, for example, the shape of a circle from which two circle segments resulting from a point reflection at the circle center of the circle are cut out. As a result, the spindle head 11 and the end of the work roll neck 16 are positively connected to one another.
  • One end of the drive spindle 27 protrudes into the other end of the spindle head 11 .
  • This end of the drive spindle 27 has an external toothing 29 which leads to an internal toothing 31 on an inner surface of the Spindle head 11 corresponds, so that rotations of the drive spindle 27 about its longitudinal axis are transmitted to the spindle head 11 and via the spindle head 11 to the work roll neck 16 and the work roll 7, 8 drive.
  • the rotations of the drive screw 27 are generated by a drive unit (not shown) of the work roll drive such as a motor.
  • a wall thickness, an outer diameter and the internal toothing 31 of the spindle head 11 are designed for the maximum torque of the work roll drive for driving the work roll 7, 8 to which the spindle head 11 is assigned.
  • the spindle head 11 is also designed in such a way that an angle between the longitudinal axes of the drive spindle 27 and the spindle head 11 can be adjusted in order to compensate for a change in the position of the work roll 7, 8, for example after the work roll 7, 8 has been ground down.
  • FIG 4 shows a work roll chock 9 of a further exemplary embodiment of a rolling device 1.
  • the work roll chock 9 has a minimum wall thickness W1 on a side 33 facing the rolling stock 3, which is smaller than a minimum wall thickness W2 on the side 34 facing away from the rolling stock 3.
  • the minimum wall thickness W1 on the side 33 facing the rolling stock 3 is less than six percent of the outer diameter D1 of the work roll bearing 17 of the work roll chock 9.
  • a bending limit for positive bending of the work rolls 7, 8 is preferably defined as a function of the minimum wall thickness W1 of the work roll chocks 9 on the sides facing the rolling stock 3, and the work rolls 7, 8 are not positively bent more than the bending limit.
  • figure 5 shows schematically a rolling train 35 with four rolling devices 1 according to the invention
  • Rolling devices 1 are arranged one behind the other along a rolling direction 37 in which the rolling stock 3 runs through the rolling train 35 .
  • All rolling devices 1 of the rolling train 35 are preferably of the same design with regard to the drive spindles 27, spindle heads 11, work roll journals 16 of the work rolls 7, 8 and work roll chocks 9, so that these components can be exchanged between the rolling devices 1. This advantageously simplifies the provision of spare parts and increases the profitability of rolling mill 35.
  • the roll stand 5 of a rolling device 1 is equipped with an equipment set that is selected depending on the rolling stock 3, in particular on its strength, width b, entry thickness and/or exit thickness and on a position of the rolling device 1 in the rolling train 35.
  • the roll stands 5 of the two rear rolling devices 1 are fitted with work rolls 7, 8, the work roll diameters of which D are smaller than the work roll diameters D of the work rolls 7, 8, with which the roll stands 5 of the two front rolling devices 1 are equipped.
  • the two rear rolling devices 1 are equipped with work rolls 7, 8 with work roll diameters D of at most 350 mm to 430 mm (depending on the width b of the rolling stock 3) and the two front rolling devices 1 are equipped with work rolls 7, 8 with work roll diameters D of at most 400 mm to 490 mm (depending on the width b of the rolling stock 3).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Claims (16)

  1. Dispositif de laminage (1) destiné au laminage à froid de produit à laminer (3), le dispositif de laminage (1) comprenant
    - une cage de laminoir (5),
    - plusieurs ensembles d'équipements destinés à l'équipement sélectif de la cage de laminoir (5) avec un des ensembles d'équipements et
    - un entraînement de cylindres de travail, dans lequel
    - chaque ensemble d'équipements présente deux cylindres de travail (7, 8) et pour chaque cylindre de travail (7, 8) deux empoises de cylindre de travail (9) associées au cylindre de travail (7, 8), lesquelles présentent respectivement au moins un palier de cylindre de travail (17) pour le cylindre de travail (7, 8), et un nez de broche (11) associé au cylindre de travail (7, 8), lequel nez de broche peut être relié par complémentarité de formes à un tourillon de cylindre de travail (16) du cylindre de travail (7, 8),
    - la cage de laminoir (5) présente des supports (19) pour respectivement une empoise de cylindre de travail (9) d'un ensemble d'équipements et
    - l'entraînement de cylindres de travail présente deux broches d'entraînement (27) qui sont réalisées respectivement par le biais de rotations autour d'un axe longitudinal de la broche d'entraînement (27) pour l'entraînement d'un cylindre de travail (7, 8) par l'intermédiaire du nez de broche (11) associé au rouleau de travail (7, 8),
    dans lequel les cylindres de travail (7, 8) présentent une zone de diamètre de cylindre de travail qui est déterminée respectivement par le biais d'un diamètre de cylindre de travail minimal et un diamètre de cylindre de travail maximal du cylindre de travail (7, 8), caractérisé en ce que
    les cylindres de travail (7, 8) d'un ensemble d'équipements présentent la même zone de diamètre de cylindre de travail et les cylindres de travail (7, 8) d'ensembles d'équipements différents présentent des zones de diamètre de cylindre de travail différentes les unes des autres.
  2. Dispositif de laminage (1) selon la revendication 1, dans lequel le diamètre de cylindre de travail minimal des cylindres de travail (7, 8) d'un ensemble d'équipements se différencie du diamètre de cylindre de travail maximal de 40 mm à 90 mm.
  3. Dispositif de laminage (1) selon la revendication 1 ou 2, dans lequel les cylindres de travail d'un ensemble d'équipements présentent un diamètre de cylindre de travail minimal de 340 mm et un diamètre de cylindre de travail maximal de 385 mm et les cylindres de travail d'un autre ensemble d'équipements présentent un diamètre de cylindre de travail minimal de 375 mm et un diamètre de cylindre de travail maximal de 460 mm.
  4. Dispositif de laminage (1) selon l'une quelconque des revendications précédentes, dans lequel les diamètres internes (d1) des paliers de cylindre de travail (17) de tous les ensembles d'équipements divergent tout au plus de deux pour cent les uns des autres.
  5. Dispositif de laminage (1) selon l'une quelconque des revendications précédentes, dans lequel les tourillons de cylindre de travail (16) des cylindres de travail (7, 8) de tous les ensembles d'équipements présentent des diamètres de tourillon (d) et des formes de tourillon identiques.
  6. Dispositif de laminage (1) selon l'une quelconque des revendications précédentes, dans lequel un rapport de diamètres d'un diamètre externe (D1) par rapport à un diamètre interne (d1) d'un palier de cylindre de travail (17) diminue avec une diminution de la zone de diamètre de cylindre de travail des ensembles d'équipements.
  7. Dispositif de laminage (1) selon l'une quelconque des revendications précédentes, dans lequel un rapport de diamètres d'un diamètre externe (D1) par rapport à un diamètre interne (d1) des paliers de cylindre de travail (17) d'au moins un ensemble d'équipements s'élève tout au plus à 1,41 et dans lequel un rapport de diamètres d'un diamètre externe (D1) par rapport à un diamètre interne (d1) des paliers de cylindre de travail (17) d'au moins un autre ensemble d'équipements s'élève au plus à 1,32.
  8. Dispositif de laminage (1) selon l'une quelconque des revendications précédentes, dans lequel un rapport d'une hauteur (A) d'une empoise de cylindre de travail (9) par rapport à un diamètre externe (D1) d'un palier de cylindre de travail (17) d'au moins un ensemble d'équipements est inférieur à 1,09.
  9. Dispositif de laminage (1) selon l'une quelconque des revendications précédentes, dans lequel une épaisseur de paroi (W1) minimale d'une empoise de cylindre de travail (9) d'au moins un ensemble d'équipements sur le côté (33) de l'empoise de cylindre de travail (9) tourné vers le produit à laminer (3) est inférieure à six pour cent d'un diamètre externe (D1) d'un palier de cylindre de travail (17) de l'empoise de cylindre de travail (9) .
  10. Dispositif de laminage (1) selon l'une quelconque des revendications précédentes, dans lequel une épaisseur de paroi (W1) minimale d'une empoise de cylindre de travail (9) d'au moins un ensemble d'équipements sur un côté (33) tourné vers le produit à laminer (3) est tout au plus aussi grande qu'une épaisseur de paroi (W2) minimale sur un côté (34) de l'empoise de cylindre de travail (9) opposé au produit à laminer (3).
  11. Procédé destiné au laminage à froid de produit à laminer (3) avec un dispositif de laminage (1) selon l'une quelconque des revendications précédentes, dans lequel la cage de laminoir (5) est équipée d'un ensemble d'équipements qui est sélectionné en fonction du produit à laminer (3).
  12. Procédé selon la revendication 11, dans lequel la cage de laminoir (5) est équipée d'un ensemble d'équipements qui est sélectionné en fonction d'une position du dispositif de laminage (1) dans un train de laminage (35).
  13. Procédé selon la revendication 11 ou 12, dans lequel pour au moins un ensemble d'équipements une limite de courbure pour des courbures positives des cylindres de travail (7, 8) est fixée en fonction d'une épaisseur de paroi (W1) minimale des empoises de cylindre de travail (9) sur les côtés (33) des empoises de cylindre de travail (9) tournés vers le produit à laminer (3) et les cylindres de travail (7, 8) ne sont pas courbés positivement plus que la limite de courbure.
  14. Procédé selon l'une quelconque des revendications 11 à 13, dans lequel les cylindres de travail (7, 8) d'au moins un ensemble d'équipements sont courbés négativement en fonction d'un bombement des cylindres de travail (7, 8).
  15. Procédé selon l'une quelconque des revendications 11 à 14, dans lequel pour au moins un ensemble d'équipements un déplacement axial des cylindres de travail (7, 8) l'un par rapport à l'autre est réglé en fonction d'une largeur et d'une épaisseur du produit à laminer (3).
  16. Train de laminage (35) avec au moins un dispositif de laminage (1) selon l'une quelconque des revendications 1 à 10.
EP20742679.2A 2019-07-17 2020-07-14 Laminage à froid du produit à laminer Active EP3999259B1 (fr)

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EP19186746.4A EP3766595A1 (fr) 2019-07-17 2019-07-17 Laminage à froid du produit à laminer
PCT/EP2020/069895 WO2021009174A1 (fr) 2019-07-17 2020-07-14 Laminage à froid d'un matériau à laminer

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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6607838U (de) 1966-08-08 1971-05-06 Voest Ag Vorrichtung zur abstuetzung der ueber gelenkspindeln antreibbaren spindelkoepfe von herausziehbare arbeitswalzen aufweisenden walzgeruesten waehrend des walzenwechsels.
JPH01309708A (ja) 1988-06-08 1989-12-14 Hitachi Ltd 圧延設備及び作業ロール駆動用スピンドルカップリングの交換装置
JPH04105704A (ja) 1990-08-24 1992-04-07 Kobe Steel Ltd 金属箔圧延用ワークロール
JPH05154523A (ja) 1991-12-06 1993-06-22 Ishikawajima Harima Heavy Ind Co Ltd 圧延機用スピンドル
DE19710552A1 (de) 1997-03-14 1998-09-17 Schloemann Siemag Ag Verbindung zwischen dem Spindelkopf einer Zahn- oder Kreuzgelenkspindel und einem Walzenzapfen
US5927127A (en) 1993-03-27 1999-07-27 Sms Schloemann-Siemag Aktiengesellschaft Reversing compact installation for cold rolling strip-shaped rolling material
DE10163373C1 (de) 2001-12-22 2003-02-27 Masch Und Werkzeugbau Gmbh Verfahren zum Wechsel von Arbeitswalzen in einem Walzgerüst
US20060196243A1 (en) 2003-03-05 2006-09-07 Germain Le Viavant Method for changing the configuration of a rolling mill and advanced rolling mill for carrying out said method
TW200918195A (en) * 2007-03-14 2009-05-01 Ihi Metaltech Co Ltd Switchable multistage rolling mill
US7665339B2 (en) 2002-11-05 2010-02-23 Vai Clecim Method for increasing the range of production of a metal product rolling installation and installation therefor
CN102078880A (zh) 2010-11-24 2011-06-01 佛山市高明基业冷轧钢板有限公司 一种冷轧机组系统及其实现方法
CN109647894A (zh) 2018-12-30 2019-04-19 衡阳市鑫诚和重型机械设备制造有限公司 轧机换辊装置及其换辊方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE856735C (de) * 1950-04-23 1952-11-24 Erich Schulte Einrichtung zum Auswechseln von auszutauschenden Walzensaetzen
GB1376605A (en) * 1971-04-15 1974-12-11 Wean United Inc Rolling mill with roll change arrangement
US4238947A (en) * 1979-05-09 1980-12-16 National Steel Corporation Work roll chock assembly for a rolling mill
JPS6137306A (ja) * 1984-07-30 1986-02-22 Hitachi Ltd 圧延機
DE10223000A1 (de) 2002-05-24 2003-12-04 Sms Demag Ag Verfahren und Vorrichtung zum Wechseln von Arbeitswalzenpaaren und/oder Stützwalzenpaaren an Walzgerüsten
DE102004007831A1 (de) 2004-02-18 2005-09-01 Sms Demag Ag Verfahren und Einrichtung zum Wechseln von Walzensätzen in Walzgerüsten einer Walzstraße
DE102011087605A1 (de) 2011-12-01 2013-06-06 Sms Siemag Ag Einbaustück und Verfahren zu dessen Herstellung
CN104438318B (zh) 2013-09-16 2016-04-27 钱钢 一种多辊可换式冷轧机
WO2015121974A1 (fr) * 2014-02-14 2015-08-20 東芝三菱電機産業システム株式会社 Dispositif de commande de vitesse de moteur pour laminoir
CN107900108B (zh) 2017-12-22 2024-04-30 一重集团大连工程技术有限公司 不带复位弹簧的滑键连接式工作辊传动接轴
CN207981856U (zh) 2018-02-08 2018-10-19 天津海钢板材有限公司 一种冷轧机用快拆快装机构

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6607838U (de) 1966-08-08 1971-05-06 Voest Ag Vorrichtung zur abstuetzung der ueber gelenkspindeln antreibbaren spindelkoepfe von herausziehbare arbeitswalzen aufweisenden walzgeruesten waehrend des walzenwechsels.
JPH01309708A (ja) 1988-06-08 1989-12-14 Hitachi Ltd 圧延設備及び作業ロール駆動用スピンドルカップリングの交換装置
JPH04105704A (ja) 1990-08-24 1992-04-07 Kobe Steel Ltd 金属箔圧延用ワークロール
JPH05154523A (ja) 1991-12-06 1993-06-22 Ishikawajima Harima Heavy Ind Co Ltd 圧延機用スピンドル
US5927127A (en) 1993-03-27 1999-07-27 Sms Schloemann-Siemag Aktiengesellschaft Reversing compact installation for cold rolling strip-shaped rolling material
DE19710552A1 (de) 1997-03-14 1998-09-17 Schloemann Siemag Ag Verbindung zwischen dem Spindelkopf einer Zahn- oder Kreuzgelenkspindel und einem Walzenzapfen
DE10163373C1 (de) 2001-12-22 2003-02-27 Masch Und Werkzeugbau Gmbh Verfahren zum Wechsel von Arbeitswalzen in einem Walzgerüst
US7665339B2 (en) 2002-11-05 2010-02-23 Vai Clecim Method for increasing the range of production of a metal product rolling installation and installation therefor
US20060196243A1 (en) 2003-03-05 2006-09-07 Germain Le Viavant Method for changing the configuration of a rolling mill and advanced rolling mill for carrying out said method
TW200918195A (en) * 2007-03-14 2009-05-01 Ihi Metaltech Co Ltd Switchable multistage rolling mill
CN102078880A (zh) 2010-11-24 2011-06-01 佛山市高明基业冷轧钢板有限公司 一种冷轧机组系统及其实现方法
CN109647894A (zh) 2018-12-30 2019-04-19 衡阳市鑫诚和重型机械设备制造有限公司 轧机换辊装置及其换辊方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ANONYM: "Tandem - Kaltwalzanlagen", SIEMAG KATALOG, 1 November 1972 (1972-11-01), XP093193150
ANONYMOUS: "SMS group supplies high-performance Compact Cold Mill to Marcegaglia", PRESS RELEASE, 13 February 2019 (2019-02-13), XP093193144, Retrieved from the Internet <URL:https://www.sms-group.com/en-de/press-and-media/press-releases/press-release-detail/sms-group-supplies-high-performance-compact-cold-mill-to-marcegaglia>

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EP3766595A1 (fr) 2021-01-20
CN114080279A (zh) 2022-02-22
EP3999259A1 (fr) 2022-05-25
US20220258220A1 (en) 2022-08-18
US11975371B2 (en) 2024-05-07
CN114080279B (zh) 2023-07-11
EP3999259C0 (fr) 2023-09-06
WO2021009174A1 (fr) 2021-01-21

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