EP3519117B1 - Dispositif d'essorage d'une bande metallique - Google Patents

Dispositif d'essorage d'une bande metallique Download PDF

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Publication number
EP3519117B1
EP3519117B1 EP17780507.4A EP17780507A EP3519117B1 EP 3519117 B1 EP3519117 B1 EP 3519117B1 EP 17780507 A EP17780507 A EP 17780507A EP 3519117 B1 EP3519117 B1 EP 3519117B1
Authority
EP
European Patent Office
Prior art keywords
crosspiece
compartment
strip
lateral walls
cylinder
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
EP17780507.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3519117A1 (fr
Inventor
Jérémie FRELIEZ
Jean MESTDAGH
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.)
Fives DMS SA
Original Assignee
Fives DMS SA
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 Fives DMS SA filed Critical Fives DMS SA
Publication of EP3519117A1 publication Critical patent/EP3519117A1/fr
Application granted granted Critical
Publication of EP3519117B1 publication Critical patent/EP3519117B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0035—Forging or pressing devices as units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0278—Cleaning devices removing liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
    • B08B1/165—Scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
    • B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
    • B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
    • B08B1/34—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members rotating about an axis parallel to the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • 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
    • B21B2203/06—Cassettes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/006—Pinch roll sets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0278—Cleaning devices removing liquids
    • B21B45/0284—Cleaning devices removing liquids removing lubricants

Definitions

  • the invention relates to a device for wiping a metal strip, which is easy to maintain.
  • the field of the invention is that of cold rolling for which it is necessary to spray onto the strip to be rolled large volumes of a liquid, consisting of an oil or an emulsion in water, to provide lubrication and cooling of the belt and rolls.
  • a liquid consisting of an oil or an emulsion in water
  • wiping devices which comprise two pressure cylinders, substantially parallel, arranged on either side of the strip to be rolled, perpendicular to the direction of travel of the latter and which are applied directly to the belt with a determined force in order to remove the oil.
  • Small diameter pressure cylinders are typically used, which squeeze out more efficiently, but which are more sensitive to deflection than larger diameter cylinders.
  • Each pressure cylinder is applied to the strip by means of a plurality of rollers distributed over the length of the cylinder, and along two axes of rotation substantially parallel to the axis of the pressure cylinder.
  • rollers are supported by a plurality of bearing blocks, distributed over the length of the cylinder, pneumatic jacks, respectively associated with the bearing blocks, making it possible to independently control the pressures exerted on the various sub-assembly of rollers. carried by the bearing blocks.
  • Such wiping devices also comprise means for controlling the supply of fluid to the pneumatic cylinders, as a function of the width of the strip and of its position between the cylinders: such a design of wiper device advantageously makes it possible to exert the application forces of the pressure cylinders, only or mainly on the part of the cylinders in contact with the strip: the compressed air intake is controlled only to the pneumatic cylinders capable of exerting their force over the width of the strip to be wrung out, while the jacks of the bearing blocks in line with the parts of the cylinders projecting laterally from the strip are not supplied (or supplied under reduced pressure): this thus avoids the faults as mentioned in the document EP 0 568 418 A1 , namely rolling of the edges of the metal strip and poor dewatering of the middle part of the metal strip.
  • the upper assembly comprising the upper pressure cylinder, the support rollers, their bearing blocks, and the corresponding pneumatic cylinders is carried by an upper cross member, positioned above the travel plane of the strip to be wrung, while the lower assembly comprising the lower pressure cylinder, the support rollers, their bearing block and the corresponding pneumatic cylinders is carried by a lower cross member, positioned below the running plane of said strip to wring out.
  • the upper crossmember can be connected to the lower crossmember by means of hydraulic cylinders which allow, when retracted, to keep the working cylinders in the working position, in a first position of the crossbars (shown on the left half of the figure 2 of this anteriority) where the pressure cylinders are close together: the positions of the cross members are fixed by stops adjusted so that the upper cylinder and the lower cylinder do not exert appreciable pressure on the strip when the cross members are in this first position and that the pneumatic cylinders associated with these cylinders are not pressurized.
  • the deployment of the hydraulic cylinders still allows the cross members to be moved apart, in a second relative position (illustrated on the right half of the figure 2 ) lower and upper cross members which allow operations to change the spinning cylinders and the support rollers, as described below.
  • the pressure cylinder (upper or lower respectively) and the bearing blocks (including the corresponding support rollers) are supported by the same beam.
  • Legs, substantially parallel are fixed rigidly integral with the two ends of this beam and ensure the maintenance of the cylinder by its two ends, by means of bearings, respectively provided between the ends of the cylinder and the corresponding legs.
  • the bearing blocks are distributed over the length of the beam, each bearing block being linked to the beam by means of a rod passing through a bore of the beam.
  • the assembly comprising the support cylinder, the bearing blocks, their support rollers and the beam forms a self-supporting assembly, usually called a “cassette ” received as an insert in a longitudinal cavity of the U-shaped cross member.
  • the cylinder bodies are rigidly integral with the cross member, on the other side of the cross member relative to the housing for the cassette, bores being drilled in the cross members in alignment with the bearing block rods. These bores allow the passage of the rods of the pneumatic cylinders, which, when pressurized, engage with the rods of the bearing blocks to transmit the thrust force (as illustrated on the left half of the figure 2 ).
  • the aim of the present invention is to provide a wiping device which overcomes the aforementioned drawbacks, of easier maintenance compared to the aforementioned state of the art.
  • Another object of the present invention is to provide a wiping device of modular design, which can be suitable for different wiping conditions.
  • the second slide comprises said cylinder, as well as chocks rotatably mounted at the ends of said cylinder by means of bearings.
  • the frame of the first drawer comprises a frame formed of two longitudinal beams and two transverse beams, which when inserted into the cross member is in a fixed position relative to the cross member, said bearing blocks being received at the cross member. less partially in the internal volume of the frame, each bearing unit being mounted free along a limited stroke relative to the frame, in the direction of the clamping plane, perpendicular to the plane of the frame of the chassis.
  • said actuators comprise fixing ends, in particular of T-section, intended to be threaded into complementary grooves of the bearing blocks, oriented along the axis of the cross member, the fixing ends and the fixing grooves. being configured so as to allow the coupling of the actuators with their respective bearing blocks during the movement of insertion of said first slide in the cross member.
  • the device comprises a third drawer supporting at least one squeegee intended to scrape the strip, capable of replacing for each cross member the second drawer, cooperating with the support rollers so that each of the squeegees can be applied. in pressure on the strip by means of said support rollers.
  • the third drawer comprises a beam having sliding surfaces, parallel and opposed, cooperating with said corresponding internal surfaces of said side walls, parallel, so as to allow possible sliding of the third drawer along a limited stroke along the path. height of the side walls in a direction perpendicular to the travel plane of the metal strip.
  • the device comprises a fourth drawer comprising a textile coated roller and chocks rotatably mounted at the ends of the roller, intended to replace, for each cross member, simultaneously said first drawer and said second drawer.
  • the upper cross member and the lower cross member have at their longitudinal ends stops, in the form of projections, directed towards one another, distributed laterally on either side of the strip to be wrung out, who in said working position, the pressure cylinders, or even the working of the squeegees, mutually engage one against the other, by defining a slot of determined thickness for the passage of the strip to be wrung between the upper cross member and the lower cross member .
  • the actuating means Vh may comprise a hydraulic cylinder.
  • This hydraulic cylinder can for example move the upper cross member 2, while the lower cross member rests at its ends on stops.
  • This hydraulic cylinder therefore connects an upper part of the frame to the cross member.
  • Guides are used to accompany the upper cross member 2 when moved by this hydraulic cylinder, in a direction of movement parallel to the plan of the cylinders.
  • the lower cross member can also be moved by another hydraulic cylinder, lower.
  • the invention is however concerned with the maintenance of such a wiping device.
  • Such a design allows the extraction of said pressure cylinder 4; 6 by sliding said second drawer 40; 60, while the first drawer 50; 70 and the support rollers 5; 7 correspondents are kept (maintained) in said cross member 2; 3. These operations are facilitated because of the controlled weight of these drawers 40, 60 which each support only one of the pressure cylinders, and not the assembly comprising this cylinder and its support rollers.
  • each cross member 2; 3 may have a U-shaped section, including an intermediate wall 20; 30 and two side walls 21, 22; 31; 32 adjoining the intermediate wall, respectively forming the wings of the U.
  • the inter-space defined between the intermediate wall 20; 30 and the two side walls 21,22; 31,32 forms a cavity for receiving the first drawer 50; 70 and the second drawer 40; 60 superimposed in this cavity.
  • the first drawer 50, 70 and the second drawer 40,60 are superimposed in the cavity, the first drawer positioned at the bottom of the cavity, the second drawer, positioned near the opening defined between the two free edges of said side walls and of so that said pressure cylinder partially protrudes from this opening during wringing.
  • such a design allows the adjustment of the application forces of the pressure cylinders 4; 6 only or mainly on the length section of the cylinders in contact with the metal strip B.
  • the compressed air intake is controlled only by the pneumatic cylinders capable of exerting their force over the width of the strip to be wrung, while the cylinders of the bearing blocks to the right of the parts of the cylinders projecting laterally from the strip are not supplied. (or fed under reduced pressure): this avoids the defects as mentioned in the document EP 0 568 418 A1 , namely rolling of the edges of the metal strip and poor dewatering of the middle part of the metal strip.
  • the body of the jacks may be rigidly attached to the cross member, fixed to the intermediate wing 20 or 30, outside the cross member, the rods of the pistons passing through bores of the intermediate wing 20 or 30, and so as to engage with the bearing blocks of the first drawers received in the cavity of the cross member.
  • said actuators 11 may comprise fixing ends 12, in particular of T-section, intended to be threaded into complementary grooves of the bearing blocks 10, oriented along the axis of the crossmember 2; 3 the fixing ends 12 and the fixing grooves being configured so as to allow the coupling of the actuators with their respective bearing blocks 10 during the insertion movement of said first spool 50; 70 in cross member 2; 3.
  • fixing ends 12 and the fixing grooves being configured so as to allow the coupling of the actuators with their respective bearing blocks 10 during the insertion movement of said first spool 50; 70 in cross member 2; 3.
  • such a design allows the decoupling of the actuators with their bearing block 10 during the extraction movement of said first slide 50; 70 out of the cross.
  • the coupling or decoupling will only be possible in the retracted position of the actuators 11, the coupling end then aligned (along the axis of the cylinder) with a notch 13 of the frame allowing its exit.
  • the frame of the first drawer 50; 70 constitutes a physical stop blocking the exit of the first drawer along the sliding axis.
  • the frame of the first drawer 50, 70 comprises a self-supporting frame formed of two longitudinal beams L and two transverse beams T, integral at their ends.
  • this frame When inserted into the corresponding cross member 2 or 3, this frame is in a fixed position relative to the cross member 2.
  • the bearing units 10 are then received at least partially in the internal volume of the frame, each bearing unit 10 being mounted free in a limited stroke relative to the chassis, depending on the direction of clamping plane, perpendicular to the plane of the chassis frame.
  • the frame and the bearing blocks 10 (and their rollers 5 or 7) of the first drawer 50 or 70 constitute a self-supporting assembly which can be extracted or inserted integrally into the cross member.
  • the aforementioned notch 13 can be made on one of the transverse beams.
  • the ribs N are parallel to the longitudinal beams of the frame of the first drawer 50, 70, projecting on either side of the frame. These N ribs are threaded to the nearest interlocking clearance in the two corresponding practical R grooves in depth of the internal surfaces of the side walls.
  • the cooperation blocks the position of the drawer at the bottom of the cavity, that is to say near the intermediate flange 20 or 30 of the cross member, and so as to leave the rest of the cavity: this ensures the presence of a clearance in the cavity allowing the insertion of the second drawer carrying the pressure cylinders 4, 6, or even the insertion of a third drawer carrying the scrapers, and which will be described later.
  • the second drawer 40; 60 comprises said cylinder 4; 6, as well as chocks 41, 42; 61,62 rotatably mounted at the ends of said cylinder 4; 6 by means of a bearing.
  • the two chocks 41, 42; 61, 62 and the pressure cylinder 4; 6 constitute a self-supporting assembly which can be removed, or inserted in one piece during change operations.
  • the shoulders E of the crosspiece and those corresponding to the chocks 21,22; 31,32 have the function of ensuring the maintenance of the second drawer 40, 60 in the cross member, in particular for the second drawer 40; 60 present in the upper cross member 2, which in the rest position will be forced downwards under the action of gravity.
  • the device can comprise a third drawer 80; 90 supporting at least one squeegee 8; 9 intended to scrape the strip, suitable for replacing for each crosspiece 2; 3 the second drawer 40; 60.
  • this third drawer cooperating with the support rollers 5.7 so that each of the scrapers 8.9 can be applied in pressure on the strip B by means of said support rollers: in this case the device d 'spinning is provided with actuators 11; this allows the adjustment of the application forces of the scrapers 8; 9 only or mainly on the length section of the squeegees in contact with the metal strip B.
  • the compressed air intake is controlled only by the pneumatic cylinders capable of exerting their force over the width of the strip to be wrung out, while the cylinders of the bearing blocks to the right of the parts of the scrapers projecting laterally from the strip are not supplied. (or supplied under reduced pressure).
  • the third drawer may comprise a beam comprising one or more scrapers 8; 9 on one of these faces.
  • the scrapers 8, 9 are directed along the length of the beam. When the beam carries several scrapers, these are located at the same level so as to simultaneously scrape the metal strip.
  • the squeegee (s) are statically fixed to the beam.
  • this beam can have sliding surfaces 81, 82; 91, 92, parallel and opposite, cooperating with said corresponding internal surfaces of said side walls 21,22; 31,32, parallel, so as to allow possible sliding of the third drawer 80; 90 following a limited stroke along the height of the side walls in a direction perpendicular to the travel plane of the metal strip.
  • These beams can also include shoulders 83; 93 cooperating with the shoulders E of said side walls, near the free edges oriented along the side walls 21, 22; 31.32. Said shoulders E of cross member 2; 3 and those 83; 93 of the third drawers cooperate with each other at the end stop in order to guarantee the maintenance of the third drawer 80; 90 in said cavity of the sleepers 2; 3.
  • the beam On its dorsal wall (opposite the wall of the beam supporting the scraper (s)), the beam can have a projecting section 84, 94 whose curved profile or (dihedral) serves as a support, simultaneously for the support rollers carried along the two parallel axes.
  • the device can comprise a fourth drawer 100; 110 comprising a textile coated roller and chocks 101,102; 111,112 rotatably mounted at the ends of the roller, intended to replace, for each cross member 2; 3, simultaneously said first drawer and said second drawer.
  • a fourth drawer 100; 110 comprising a textile coated roller and chocks 101,102; 111,112 rotatably mounted at the ends of the roller, intended to replace, for each cross member 2; 3, simultaneously said first drawer and said second drawer.
  • the textile roll and its chocks form a self-supporting assembly which can be extracted or inserted in one piece into the crosspiece.
  • actuators 11 in particular pneumatic actuators, making it possible to adjust the distribution of the application of the rolls over the width of the strip, these are not used for textile rollers, of larger diameter. , very often subjected to a clamping force of lower intensity than that of the pressure cylinders.
  • such a modular design of the device namely the possibility of using, as a wiping means, not only pressure cylinders, but also scrapers and / or textile rollers, makes it possible to adapt the wiping means. depending on the spin conditions.
  • the upper cross member 2 and the lower cross member 3 may have at their longitudinal ends stops 23, 33, in the form of projections, directed towards one another, distributed laterally on either side. of the wringing strip.
  • these stops 23, 33 can be provided at the level of each wing of the U. In said working position P2 of the pressure cylinders 4, 6 (or even working of the scrapers 8, 9) these stops 23, 33 mutually engage one against the other, defining a slot of determined thickness for the passage of the strip to be wrung between the upper cross member 2 and the lower cross member 3.
  • Such a slot of thickness " F " is illustrated on figure 8 when the upper cross member 2 is in contact with the lower cross member 3 via the stops 23 and 33 under the action of the actuating means Vh.
  • This thin slot can be defined less than a few centimeters, for example less than or equal to 5 cm, in particular less than or equal to 3 cm.
  • the side wings of the cross members (lower and upper) located upstream (according to the direction of travel of the strip) with respect to the pressure cylinders 4 and 6 constitute the first physical members which obstruct the oil during spinning, and prior to the action of the pressure cylinders.
  • the application forces of the pressure cylinders 4 and 6 are regulated on the strip to be wrung out by the implementation of a regulation on the actuators 11 of the pneumatic type.
  • the lower and upper cross members can also be brought into contact by these stops 23 and 33 when equipped with the third drawers carrying the scrapers 8 and 9. In such a case, and like the pressure cylinders, the forces are regulated. application of the scrapers 8 and 9 on the strip to be wrung out by the implementation of a regulation on the actuators 11 of the pneumatic type.
  • the upper and lower cross members are not brought into abutment against each other, but on the contrary in a slightly separated working position: the forces of application of the textile rolls on the strip to be wrung out by the implementation of a regulation on the typically hydraulic actuation means.
  • the actuators 11 of the pneumatic type are not used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP17780507.4A 2016-09-27 2017-09-26 Dispositif d'essorage d'une bande metallique Active EP3519117B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1659083A FR3056419B1 (fr) 2016-09-27 2016-09-27 Dispositif d'essorage d'une bande metallique
PCT/FR2017/052577 WO2018060581A1 (fr) 2016-09-27 2017-09-26 Dispositif d'essorage d'une bande metallique

Publications (2)

Publication Number Publication Date
EP3519117A1 EP3519117A1 (fr) 2019-08-07
EP3519117B1 true EP3519117B1 (fr) 2020-10-28

Family

ID=57349006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17780507.4A Active EP3519117B1 (fr) 2016-09-27 2017-09-26 Dispositif d'essorage d'une bande metallique

Country Status (6)

Country Link
US (1) US11358191B2 (zh)
EP (1) EP3519117B1 (zh)
CN (1) CN109789455B (zh)
ES (1) ES2834882T3 (zh)
FR (1) FR3056419B1 (zh)
WO (1) WO2018060581A1 (zh)

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RU2730826C1 (ru) 2018-06-13 2020-08-26 Новелис Инк. Устройства и способы удерживания вязких материалов в прокатном производстве
BR112020001891A2 (pt) 2018-06-13 2020-08-04 Novelis Inc. sistemas e métodos para refrigerar um rolo no processamento de metais
CN110605298B (zh) * 2019-08-12 2023-07-04 中色科技股份有限公司 一种基于vb应用实现熨平辊液压缸推力计算的方法
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ES2834882T3 (es) 2021-06-21
CN109789455A (zh) 2019-05-21
US20190217355A1 (en) 2019-07-18
FR3056419B1 (fr) 2018-10-12
EP3519117A1 (fr) 2019-08-07
FR3056419A1 (fr) 2018-03-30
WO2018060581A1 (fr) 2018-04-05
CN109789455B (zh) 2021-07-13
US11358191B2 (en) 2022-06-14

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