EP3766595A1 - Laminage à froid du produit à laminer - Google Patents

Laminage à froid du produit à laminer Download PDF

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Publication number
EP3766595A1
EP3766595A1 EP19186746.4A EP19186746A EP3766595A1 EP 3766595 A1 EP3766595 A1 EP 3766595A1 EP 19186746 A EP19186746 A EP 19186746A EP 3766595 A1 EP3766595 A1 EP 3766595A1
Authority
EP
European Patent Office
Prior art keywords
work roll
rolling
work
roll
diameter
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.)
Withdrawn
Application number
EP19186746.4A
Other languages
German (de)
English (en)
Inventor
Roland Kellermayr
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 Technologies Austria GmbH
Original Assignee
Primetals Technologies Austria 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 Primetals Technologies Austria GmbH filed Critical Primetals Technologies Austria GmbH
Priority to EP19186746.4A priority Critical patent/EP3766595A1/fr
Priority to EP20742679.2A priority patent/EP3999259B1/fr
Priority to PCT/EP2020/069895 priority patent/WO2021009174A1/fr
Priority to CN202080051553.3A priority patent/CN114080279B/zh
Priority to US17/626,949 priority patent/US11975371B2/en
Publication of EP3766595A1 publication Critical patent/EP3766595A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a rolling device, a method and a rolling train for cold rolling rolling stock.
  • 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.
  • several rolling stands are arranged one behind the other and form a so-called rolling train through which the rolling stock traverses in one rolling direction, 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, however, be increased as desired in terms of process technology, since the material strength of the rolled stock increases as a function of 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 that support the work rolls. Each roll is rotatably mounted at its ends on bearings which are each carried by a so-called chock which is installed in a holder of the roll stand so that it can be moved vertically. As 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 can be easily bent to a to achieve uniform thickness of the rolling stock in the axial direction, that is, 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 successively reduces the roll diameter of the work rolls. Finally, the work rolls are replaced when their roll diameter has been reduced to a minimum work roll diameter due to grinding.
  • the minimum work roll diameter is determined by the rolling parameters (rolling torque, rolling force, rolling tension, 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 determine a 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 on the work roll bearing.
  • the rolling parameters are in turn determined by the material properties of the rolling stock as well as by its inlet thickness, outlet thickness and width.
  • a relatively soft rolling stock with a large width and thickness and a high required thickness reduction of more than 80 percent places high torque requirements on the first two roll stands of a rolling train and causes high temperature loads on the components of the rear roll stands.
  • Large work roll diameters are therefore preferred for such rolling of soft rolling stock.
  • the rolling of high-strength and ultra-high-strength rolling stock with run-out thicknesses of, for example, more than 0.5 mm leads to high rolling forces on all roll stands and, in particular, to a lower thickness reduction capacity on the rear roll stands (for example on the third and fourth roll 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 for the production of electrical steel strip with a relatively high silicon content and runout 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.
  • the object is achieved by a roll stand having the features of claim 1, a method having the features of claim 10 and a rolling train having the features of claim 15.
  • Each equipment set comprises two work rolls and for each work roll two associated with the work roll
  • Work roll chocks each having 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 work rolls of different equipment sets have different work roll diameter ranges.
  • the roll stand has brackets which are each designed to hold a work roll chock of an assembly kit.
  • the work roll drive has two drive spindles, each of which is designed to drive a work roll via the spindle head assigned to the work roll by rotating about a longitudinal axis of the drive spindle.
  • the work roll diameter range of the work rolls of an equipment set is understood to be an area that defines the use of the work rolls for rolling (if the work roll diameter would leave the work roll diameter range through further grinding, they are no longer used).
  • the roll stand of a rolling device according to the invention can therefore be equipped with work rolls of different work roll diameter ranges.
  • each assembly set includes work roll chocks that correspond 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 thus be advantageously adapted to the respective rolling stock.
  • a rolling device for rolling high-strength rolling stock, work rolls with a smaller work roll diameter can be used than for rolling relatively soft rolling stock.
  • a rolling device is suitable for a wide range of rolled products to be manufactured.
  • the invention aims to be able to profitably process both relatively soft rolling stock and high quality rolling stock with the same rolling device To be able to produce high-strength steel products with small thicknesses, for example thicknesses less than 0.5 mm.
  • the work roll bearings of all equipment sets are designed as roller bearings, for example as tapered roller bearings.
  • the inner diameters of the work roll bearings of all equipment sets preferably differ from one another by at most two percent.
  • work rolls with work roll journals of the same journal diameter can be used, so that the spindle heads also have the same internal 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 the roll stand is converted 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 outside diameter to an inside diameter of a work roll bearing can decrease as the work roll diameter range of the work rolls of the equipment sets decreases.
  • a diameter ratio of an outer diameter to an inner diameter of the work roll bearings of at least one equipment set is at most 1.32.
  • the decrease in the diameter ratio of the work roll bearings to 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, as otherwise the work roll bearings of the two opposite work rolls collide in the roll stand would stand in their way.
  • a diameter ratio that is as low as possible is made possible, in particular with a given inner diameter the work roll bearings, the lowest possible 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 ultra-high-strength rolled stock, especially 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, as 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 embodiment of the rolling device is also aimed at reducing the work roll diameter by reducing the height of the work roll chocks. With a given inside diameter of the work roll bearing, the reduction in the height of a work roll chock is made possible, in particular 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 assembly 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 refinements of the rolling device take into account that the work roll chocks approach one another as the work roll diameters decrease, and thus the risk increases that the work roll chocks will collide or stand in each other's way.
  • a reduction in the minimum wall thickness of the work roll chocks on the sides facing the rolling stock increases the distance between the work roll chocks and thus 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 which is selected as a function of the rolling stock.
  • the work roll diameters of the work rolls used for rolling are adapted to the strength, width, inlet thickness and / or outlet thickness of the rolling stock.
  • the roll stand is equipped with an equipment set which is selected as a function of a position of the rolling device in a rolling train.
  • the position of a rolling device in a (multi-stand) rolling train is understood to mean the position which the rolling stand of the rolling device assumes in a sequence of all rolling stands of the rolling train in which the rolling stock passes through the rolling stands.
  • 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 can depend on the position of the rolling device in the rolling train for the most advantageous work roll diameters of the work rolls of a rolling device.
  • a bending limit for positive bending of the work rolls depending on a minimum wall thickness of the work roll chocks on the sides of the work roll chocks facing the rolling stock is set for at least one equipment set and the work rolls are not bent more positively 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 minimal wall thicknesses of work roll chocks on the sides facing the rolling stock are reduced. A reduction in these wall thicknesses reduces the load-bearing capacity of the work roll chocks when the work rolls bend positively.
  • the aforementioned embodiment of the method according to the invention takes this into account by correspondingly 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 is also aimed at relieving the work roll chocks when the work rolls bend on their sides facing the rolling stock, in that instead of positive bends that are particularly stressful on these sides, negative bends of the work rolls that interact with a crowning of the work rolls are carried out, which results in a suitably designed crown of the work rolls presupposes.
  • an axial displacement of the work rolls relative to one another is set for at least one equipment set as a function of a width and thickness of the rolling stock.
  • such a mutual axial displacement of the work rolls can prevent the central areas of the work rolls, in which the work rolls assume their maximum work roll diameter, from touching each other during the rolling of very thin rolling stock in the area outside the rolling 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 train according to the invention enables the rolling devices according to the invention to be retrofitted depending on the respective rolling stock, i.e. adapting the equipment of the rolling stands of these rolling devices to the rolling stock, and thus processing different rolling stock or producing 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 optionally 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 assigned to the work roll 7, 8 and a spindle head 11 assigned to the work roll 7, 8.
  • the two work rolls 7, 8 of an assembly set have the same work roll diameter range, which Work rolls 7, 8 of different equipment sets have different work roll diameter ranges.
  • Figure 2 shows the work rolls 7, 8 of an equipment set and a rolling stock 3 passed through between the work rolls 7, 8 and having a width b.
  • 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 region 13, which is approximately circular-cylindrical and usually ground spherical or bottle-shaped.
  • One end of the central region 13 of each work roll 7, 8 has a chamfer 15, the chamfers 15 of the two work rolls 7, 8 being arranged opposite one another.
  • Each end region of a work roll 7, 8 is designed as a work roll journal 16, the Journal diameter d is smaller than the work roll diameter D.
  • the journal diameter d of the work rolls 7, 8 of all equipment sets match.
  • the work rolls 7, 8 are axially displaced relative to one another in such a way that the chamfers 15 of the two work rolls 7, 8 are each arranged in the area 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 to avoid edge cracks in the strip edges, which can occur without relieving the strip edges when rolling rolled stock 3 at risk of edge cracks, for example electrical steel strip with a silicon content of at least two percent.
  • such a mutual axial displacement of the work rolls 7, 8 can prevent the central areas 13 of the work rolls 7, 8 from touching one another in the area outside the rolling stock 3 during the rolling of 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 roller 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 differ from one another by no more than two percent.
  • the outside diameter D1 of the work roll bearings 17 of the different equipment sets can, however, differ significantly from one another.
  • a diameter ratio D1 / d1 of the outside diameter D1 to the inside diameter d1 of a work roll bearing 17 decreases as the roll diameter D of the work rolls 7, 8 of the equipment sets decreases.
  • this diameter ratio for at least one equipment set, in particular for equipment sets with small work roll diameters D 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 receives a work roll chock 9 and in which the work roll chocks 9 are vertically displaceable, for example by hydraulic cylinders (not shown).
  • bending forces can be exerted on the work rolls 7, 8 via the mountings 19.
  • a work roll 7, 8 can be bent positively by a bending force in a first bending force direction 21 directed away from the rolling stock 3.
  • a first load zone 23 of the work roll chock 9 facing the rolling stock 3 is loaded, with FIG Figure 1 Forces acting in this case are shown by arrows in the first load zone 23.
  • 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 FIG Figure 1 Forces acting in this case are shown by arrows in the second load zone 24.
  • the rolling device 1 of the in Figure 1 also has backup 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 journal 16 of a work roll 7, 8, the one assigned to the work roll 7, 8 Spindle head 11 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, the cross section of which 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 projects.
  • the cross section of the end of the work roll journal 16 is not circular, but has, for example, the shape of a circle from which two circular segments emerging from each other by a point reflection at the center of the circle are cut out. As a result, the spindle head 11 and the end of the work roll journal 16 are positively connected to one another.
  • 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 corresponds to an internal toothing 31 on an inner surface of the spindle head 11, 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 journal 16 and the Drive work roll 7, 8.
  • the rotations of the drive spindle 27 are generated by a (not shown) drive unit of the work roll drive, for example by 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 is adjustable in order to compensate for a change in position of the work roll 7, 8, for example after the work roll 7, 8 has been grinded.
  • FIG 4 shows a work roll chock 9 of a further 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 set depending on the minimum wall thickness W1 of the work roll chocks 9 are fixed on the sides facing the rolling stock 3 and the work rolls 7, 8 are not bent more positively than the bending limit.
  • Figure 5 shows schematically a rolling train 35 with four inventive rolling devices 1.
  • the 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 of the rolling devices 1 of the rolling train 35 are 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 the rolling train 35.
  • the roll stand 5 of a rolling device 1 is equipped with an equipment set which is selected depending on the rolling stock 3, in particular on its strength, width b, inlet thickness and / or outlet 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 equipped with work rolls 7, 8, the work roll diameter D of which is smaller than the work roll diameter 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) equipped.

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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)
EP19186746.4A 2019-07-17 2019-07-17 Laminage à froid du produit à laminer Withdrawn EP3766595A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP19186746.4A EP3766595A1 (fr) 2019-07-17 2019-07-17 Laminage à froid du produit à laminer
EP20742679.2A EP3999259B1 (fr) 2019-07-17 2020-07-14 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
CN202080051553.3A CN114080279B (zh) 2019-07-17 2020-07-14 轧件的冷轧
US17/626,949 US11975371B2 (en) 2019-07-17 2020-07-14 Cold rolling of rolled stock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19186746.4A EP3766595A1 (fr) 2019-07-17 2019-07-17 Laminage à froid du produit à laminer

Publications (1)

Publication Number Publication Date
EP3766595A1 true EP3766595A1 (fr) 2021-01-20

Family

ID=67402849

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19186746.4A Withdrawn EP3766595A1 (fr) 2019-07-17 2019-07-17 Laminage à froid du produit à laminer
EP20742679.2A Active EP3999259B1 (fr) 2019-07-17 2020-07-14 Laminage à froid du produit à laminer

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20742679.2A Active EP3999259B1 (fr) 2019-07-17 2020-07-14 Laminage à froid du produit à laminer

Country Status (4)

Country Link
US (1) US11975371B2 (fr)
EP (2) EP3766595A1 (fr)
CN (1) CN114080279B (fr)
WO (1) WO2021009174A1 (fr)

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CN114080279B (zh) 2023-07-11
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