EP2979770B1 - Verfahren und vorrichtung zur herstellung dicker stahlplatten - Google Patents

Verfahren und vorrichtung zur herstellung dicker stahlplatten Download PDF

Info

Publication number
EP2979770B1
EP2979770B1 EP14775597.9A EP14775597A EP2979770B1 EP 2979770 B1 EP2979770 B1 EP 2979770B1 EP 14775597 A EP14775597 A EP 14775597A EP 2979770 B1 EP2979770 B1 EP 2979770B1
Authority
EP
European Patent Office
Prior art keywords
steel plate
cooling
cooling water
descaling
water
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
EP14775597.9A
Other languages
English (en)
French (fr)
Other versions
EP2979770A1 (de
EP2979770A4 (de
Inventor
Yuta TAMURA
Hiroyuki Fukuda
Kenji Adachi
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.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
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 JFE Steel Corp filed Critical JFE Steel Corp
Publication of EP2979770A1 publication Critical patent/EP2979770A1/de
Publication of EP2979770A4 publication Critical patent/EP2979770A4/de
Application granted granted Critical
Publication of EP2979770B1 publication Critical patent/EP2979770B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • 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
    • B21B45/04—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 de-scaling, e.g. by brushing
    • B21B45/08—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 de-scaling, e.g. by brushing hydraulically
    • 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
    • B21B2001/225—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 by hot-rolling
    • 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
    • B21B2015/0071—Levelling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B21B37/76—Cooling control on the run-out table

Definitions

  • the present invention relates to a method and a facility for manufacturing a steel plate that performs hot rolling, shape correction and controlled cooling thereto.
  • Patent Literature 1 discloses a method in which descaling is performed at at least one of a location just in front of and a location just behind a finish rolling final path, then, hot shape correction is performed, then, descaling is performed, and forced cooling is performed.
  • Patent Literature 2 discloses a method in which, after performing finish rolling and hot shape correction, descaling is performed and, then, controlled cooling is performed.
  • Patent Literature 3 discloses a method in which, just before performing controlled cooling, descaling is performed while controlling collision pressure of cooling water.
  • Patent literature 4 discloses a facility in accordance with the preamble of claim 1, in which an accelerated cooling apparatus resembles that depicted in Fig. 2 .
  • the present invention has been carried out as a result of focusing on the unsolved problems of the aforementioned related arts. It is an object of the present invention to provide a facility and a method for manufacturing a steel plate which performs uniform cooling during the cooling step by uniformizing scale formed on a surface of the steel plate in the descaling step, to manufacture the steel plate having excellent shape.
  • the gist of the present invention is as follows.
  • the present invention it is possible to perform uniform cooling during the accelerated cooling step and to manufacture the steel plate having excellent shape, by uniformizing scale formed on the surface of the steel plate in the descaling step.
  • Fig. 1 is a schematic view of an exemplary steel plate rolling line used for carrying out the present invention.
  • a rolling apparatus 3 performs rough rolling and finish rolling on a slab taken away from a heating furnace 2, and the slab is rolled into a steel plate 1 having a predetermined plate thickness. Then, after scale formed on a surface of the steel plate 1 is removed by a descaling apparatus 4, the steel plate 1 is transported on-line to an accelerated cooling apparatus 6.
  • a first shape correcting apparatus 5 from the viewpoint of the shape of the steel plate after the cooling.
  • the steel plate is cooled up to a predetermined temperature by cooling water that is jetted from an upper surface cooling facility and a lower surface cooling facility. Then, if necessary, the shape of the steel plate is corrected by a second shape correcting apparatus 7.
  • the descaling apparatus 4 is a apparatus that removes scale formed on a surface of the steel plate 1.
  • a plurality of injection nozzles are caused to face the surface of the steel plate 1 whose distorted shape has been corrected by the first shape correcting apparatus 5, and cooling water is jetted from these nozzles.
  • scale formed on the surface of the steel plate 1 is removed by descaling with the energy density E of the cooling water being greater than or equal to 0.10 J/mm 2 . Then, the accelerated cooling apparatus 6 performs accelerated cooling on the steel plate 1.
  • the thickness of the scale becomes small and uniform by descaling, when the steel plate passes the accelerated cooling apparatus, it is possible to perform uniform cooling almost without any variations in surface temperature at locations on the steel plate in a width direction, and for the steel plate to have excellent shape.
  • the scale may be partly removed off.
  • the scale is not uniformly removed off, as a result of which variations in the distribution of thickness of the scale of approximately 10 to 50 ⁇ m occur.
  • the descaling apparatus 4 by performing descaling by the descaling apparatus 4 with the energy density E of the cooling water being greater than or equal to 0.10 J/mm 2 , the variations in the distribution of thickness of the scale are eliminated. Consequently, when the accelerated cooling apparatus 6 has cooled the steel plate 1, it is possible to perform uniform cooling almost without any variations in surface temperature at locations on the steel plate in the width direction. As a result, it is possible to manufacture the steel plate 1 having excellent shape. In the case of the present invention, even if the collision pressure is low, it is possible to, by adjusting transport velocity, perform descaling that is similar to descaling that is performed when the collision pressure is high.
  • E energy density E (J/mm 2 ) of cooling water that is jetted to the steel plate
  • E Q / d ⁇ W ⁇ ⁇ v 2 / 2 ⁇ t
  • Q descaling water jetting flow rate [m 3 /s]
  • d spray jet thickness [mm] of flat nozzle
  • W spray jet width [mm] of flat nozzle
  • ⁇ fluid density [kg/m 3 ]
  • v fluid velocity [m/s] during collision at steel plate
  • water flow amount density ⁇ jetting pressure ⁇ collision time may be used as a simple definition of the energy density E (J/mm 2 ) of cooling water that is jetted to the steel plate.
  • water flow rate (m 3 /(mm 2 ⁇ min)) is a value calculated by using the formula “jetting flow rate of cooling water ⁇ cooling water collision area”.
  • the collision time (s) is a value that is calculated by "cooling water collision thickness ⁇ transport velocity of steel plate”.
  • the energy density E of cooling water is preferably greater than or equal to 0.10 J/mm 2 and is more preferably greater than or equal to 0.15 J/mm 2 .
  • a jetting distance H preferably is less than or equal to 200 mm.
  • the jetting distance is reduced, for example, jetting flow rate and jetting pressure for obtaining a predetermined energy density can be reduced. Therefore, it is possible to reduce pumping power of the descaling apparatus 4.
  • the steel plate 1 of which shape has been corrected by the first shape correcting apparatus 5 moves into the descaling apparatus 4. Therefore, it is possible to bring the injection nozzles of the descaling apparatus 4 close to the surface of the steel plate 1.
  • the lower limit of the jetting distance is preferably greater than or equal to 40 mm. From the above, in the present invention, the jetting distance H is preferably from 40 mm to 200 mm.
  • the jetting pressure of cooling water is preferably greater than or equal to 10 MPa, and, more preferably, greater than or equal to 15 MPa. It is advantageous because this makes it possible to set the energy density of cooling water to a value that is greater than or equal to 0.10 J/m 2 without excessively reducing the transport velocity.
  • the upper limit of the jetting pressure is not particularly limited to a certain value. However, if the jetting pressure is increased, energy that is consumed by a pump that supplies high-pressure water becomes a tremendous amount. Therefore, the jetting pressure is preferably less than or equal to 50 MPa.
  • ⁇ 2 a ⁇ exp ⁇ Q / RT ⁇ t
  • ⁇ scale thickness
  • a constant
  • Q activation energy
  • R constant
  • T steel plate temperature [K] before cooling
  • t time.
  • a distance L from an exit side of the descaling apparatus 4 to an entrance side of the accelerated cooling apparatus 6 is set with respect to the transport velocity V of the steel plate 1 and the time t (time from the end of the step of the descaling apparatus 4 to the starting of the step of the accelerated cooling apparatus 6) so as to satisfy the following Formula (6): L ⁇ V ⁇ t where L: distance (m) from descaling apparatus 4 to accelerated cooling apparatus 6, V: transport velocity (m/s) of steel plate 1, t: time (s).
  • Formula (7) L ⁇ V ⁇ 5 ⁇ 10 ⁇ 9 ⁇ exp 25000 / T
  • Formula (9) it is preferable that Formula (9) be satisfied: L ⁇ V ⁇ 5.6 ⁇ 10 ⁇ 10 ⁇ exp 25000 / T
  • the cooling is stable when the distance L from the descaling apparatus 4 to the accelerated cooling apparatus 6 is from 12 m to 107 m, is more stable when the distance L is from 5 m to 47 m, and is very stable when the distance L is from 1.3 m to 12 m.
  • the transport velocity V of a large portion of the steel plate 1 that requires controlled cooling is greater than or equal to 0.5 m/s
  • the distance L be less than or equal to 2.5 m, which is a condition that allows the cooling to be very stable at this transport velocity V.
  • the case in which the temperature of the steel plate 1 before the cooling by the accelerated cooling apparatus 6 is 820°C is described.
  • the temperature of the steel plate 1 before the cooling by the accelerated cooling apparatus 6 is other than 820°C, it is possible for the cooling to be stable when the distance L from the descaling apparatus 4 to the accelerated cooling apparatus 6 is preferably less than or equal to 12 m, is more preferably less than or equal to 5 m, and is even more preferably less than or equal to 2.5 m.
  • the accelerated cooling apparatus 6 includes an upper header 11 that supplies cooling water to an upper surface of the steel plate 1, cooling water injection nozzles 13 that are suspended from the upper header 11 and that jet rod-like cooling water, and a partition wall 15 that is set between the steel plate 1 and the upper header 11. It is preferable that the partition wall 15 be provided with a plurality of water supply ports 16 into which lower ends of the cooling water injection nozzles 13 are inserted and a plurality of water drainage ports 17 for draining the cooling water supplied to the upper surface of the steel plate 1 to locations above the partition wall 15.
  • the upper surface cooling facility includes the upper header 11 that supplies cooling water to the upper surface of the steel plate 1, the cooling water injection nozzles 13 that are suspended from the upper header 11, and the partition wall 15 that is provided horizontally in the width direction of the steel plate between the upper header 11 and the steel plate 1 and that includes a plurality of through holes (the water supply ports 16 and the water drainage ports 17).
  • Each cooling water injection nozzle 13 is a circular tube nozzle 13 that jets the rod-like cooling water. An end of each nozzle 13 is inserted into its corresponding through hole (water supply port 16) in the partition wall 15, and is set above a lower end portion of the partition wall 15.
  • each cooling water injection nozzle 13 In order to prevent each cooling water injection nozzle 13 from sucking foreign material at a bottom portion of the interior of the upper header 11 and from becoming clogged, an upper end of each injection nozzle 13 preferably penetrates the upper header 11 so as to protrude into the interior of the upper header 11.
  • the term "rod-like cooling water " in the present invention refers to cooling water which is jetted while pressure of a certain amount is applied from circular nozzle jetting openings (which may also refer to elliptical or polygonal nozzle jetting openings); which has a cooling-water jetting speed from each nozzle jetting opening of 6 m/s or greater, preferably 8 m/s or greater; and whose flow is a continuous and linear flow in which the shape of a cross section of the flow of water jetted from each nozzle jetting opening is maintained in a substantially circular shape. That is, the rod-like cooling water differs from cooling water that freely falls downward from a circular tube laminar nozzle, and cooling water that is jetted in liquid drops like a spray.
  • each cooling water injection nozzle 13 is inserted into its corresponding through hole and is set above the lower end portion of the partition wall 15 to prevent, by the partition wall 15, the cooling water injection nozzles 13 from becoming damaged even when the steel plate whose end has been warped upward has moved in. This makes it possible to perform the cooling for a long period of time with the cooling water injection nozzles 13 being set in a good state. Therefore, it is possible to prevent temperature irregularities of the steel plate without, for example, repairing the facility.
  • each circular tube nozzle 13 Since the end of each circular tube nozzle 13 is inserted in its corresponding through hole, as shown in Fig. 11 , the end of each circular tube nozzle 13 does not interfere with the flow in a width direction of drainage water 19 that flows along an upper surface of the partition wall 15 and that is indicated by a dotted arrow. Therefore, it is possible for the cooling water jetted from the cooling water injection nozzles 13 to equally reach the upper surface of the steel plate regardless of the locations in the width direction, and uniformly cool the steel plate in the width direction.
  • the partition wall 15 is provided with a plurality of through holes having a diameter of 10 mm. These through holes are provided in a grid pattern at a pitch of 80 mm in the width direction of the steel plate and at a pitch of 80 mm in the conveyance direction.
  • the cooling water injection nozzles 13 each having an outside diameter of 8 mm, an inside diameter of 3 mm, and a length of 140 mm are inserted in the corresponding water supply ports 16.
  • the cooling water injection nozzles 13 are arranged in a staggered pattern form, and the through holes in which the cooling water injection nozzles 13 are not inserted are the water drainage ports 17 for the cooling water.
  • the plurality of through holes in the partition wall 15 of the accelerated cooling apparatus according to the present invention include substantially the same number of water supply ports 16 and water drainage ports 17, and are assigned different roles and functions.
  • the total cross sectional area of the drainage water outlets 17 is sufficiently larger than the total cross sectional area of the inside of the cooling water injection nozzles 13, which are the circular tube nozzles 13, and is approximately 11 times the total cross sectional area of the inside of the circular tube nozzles 13.
  • the cooling water supplied to the upper surface of the steel plate fills a portion between the surface of the steel plate and the partition wall 15, and is guided to locations above the partition wall 15 and quickly drained via the water drainage ports 17.
  • Fig. 7 is a front view for describing the flow of drainage cooling water above the partition wall near an end portion of the partition wall in a width direction of the steel plate.
  • each water drainage port 17 is an upward direction, which is opposite to the cooling water jetting direction.
  • the drainage cooling water that has flowed out of the partition wall 15 to locations above the partition wall 15 changes its direction towards an outer side in the width direction of the steel plate, flows through a drainage water flow path, provided between the upper header 11 and the partition wall 15, and is drained.
  • each water drainage port 17 is inclined in the width direction of the steel plate such that the water drainage direction is an oblique direction in a widthwise outer-side direction so as to be set towards the outer side in the width direction of the steel plate.
  • each water drainage port and its corresponding water supply port are set in the same through hole, it becomes difficult for the cooling water to flow out of the partition wall 15 to locations above the partition wall 15 after the cooling water has collided with the steel plate.
  • the cooling water flows through a portion between the steel plate 1 and the partition wall 15 towards an end portion in a width direction of the steel plate.
  • This causes the flow rate of the drainage cooling water between the steel plate 1 and the partition wall 15 to become large with decreasing distance to the end portion in the width direction of the plate. Therefore, with decreasing distance to the end portion in the width direction of the plate, this interferes with force for causing jetted cooling water 18 to reach the steel plate by penetrating through a retained water membrane.
  • a width thereof is 2 m at most, so that its influence is limited.
  • a steel plate has a plate width that is greater than or equal to 3 m, its influence cannot be ignored. Therefore, cooling of an end portion in a width direction of a steel plate becomes weak, in which case, the temperature distribution in the width direction of the steel plate becomes non-uniform.
  • the accelerated cooling apparatus is formed such that the water supply ports 16 and the water drainage ports 17 are separately formed and such that there is a division of roles into supplying water and draining water. Therefore, the cooling drainage water passes through the water drainage ports 17 in the partition wall 15 and smoothly flows to locations above the partition wall 15. Consequently, since the drainage water after the cooling is quickly removed from the upper surface of the steel plate, cooling water that is subsequently supplied can easily penetrate a retained water membrane, as a result of which sufficient cooling capability can be provided.
  • the temperature distribution in the width direction of the steel plate in this case becomes uniform, as a result of which a uniform temperature distribution can be obtained in the width direction.
  • the cooling water can be quickly drained.
  • This can be achieved by, for example, forming holes that are larger than the outside diameter of the circular tube nozzles 13 in the partition wall 15 and setting the number of water drainage ports so as to be equal to or greater than the number of water supply ports.
  • the total cross sectional area of the water drainage ports 17 is less than 1.5 times the total cross sectional area of the inside of the circular tube nozzles 13, the flow resistance at each water drainage port becomes high, and, thus, it becomes difficult for retained water to be drained. As a result, the amount of cooling water that can penetrate a retained water membrane and reach the surface of the steel plate is considerably reduced, as a result of which the cooling capability is reduced. Therefore, this is not preferable. It is more preferable for the total cross sectional area of the water drainage ports 17 to be greater than or equal to 4 times the total cross sectional area of the inside of the circular tube nozzles 13.
  • the ratio between the total cross sectional area of the water drainage ports and the total cross sectional area of the inside of the circular tube nozzles 13 be in the range of from 1.5 to 20.
  • a gap between an outer peripheral surface of each circular tube nozzle 13 inserted in its corresponding water supply port 16 in the partition wall 15 and an inner surface defining its corresponding water supply port 16 be less than or equal to 3 mm in size. If the gap is large, the influence of flow that accompanies the cooling water that is jetted from each circular tube nozzle 13 causes the drainage cooling water drained to an upper surface of the partition wall 15 to be introduced into the gap between each water supply port 16 and the outer peripheral surface of its corresponding circular tube nozzle 13, as a result of which the cooling water is supplied again to locations above the steel plate. Therefore, cooling efficiency is reduced.
  • each circular tube nozzle 13 be substantially the same as the size of its corresponding water supply port 16.
  • a gap of up to 3 mm at which the influence is essentially small is allowed. More desirably, the size is less than or equal to 2 mm.
  • each circular tube nozzle 13 the inside diameter of each circular tube nozzle 13, the length of each circular tube nozzle, the jetting velocity of the cooling water, and the nozzle distance also need to be optimal values.
  • the inside diameter of each nozzle is suitably from 3 to 8 mm. If the inside diameter is less than 3 mm, batches of water jetted from the nozzles become thin, as a result of which they lose force. In contrast, if the diameter of each nozzle exceeds 8 mm, the flow velocity is reduced, as a result of which force for causing the cooling water to penetrate the retained water membrane is reduced.
  • each circular tube nozzle 13 is suitably from 120 to 240 mm.
  • the phrase “the length of each circular tube nozzle 13" refers to a length from an inlet in the upper end of each nozzle that penetrates by a certain amount into the interior of the header to a lower end of each nozzle inserted in the corresponding water supply port in the partition wall.
  • each circular tube nozzle 13 If the length of each circular tube nozzle 13 is less than 120 mm, the distance between a lower surface of the header and the upper surface of the partition wall becomes too small (for example, if the thickness of the header is 20 mm, a protruding amount of the upper end of each nozzle into the interior of the header is 20 mm, and an insertion amount of the lower end of each nozzle in the partition wall is 10 mm, the distance becomes less than 70 mm). Therefore, water drainage space above the partition wall becomes small, as a result of which the drainage cooling water cannot be smoothly drained. In contrast, if the length of each circular tube nozzle 13 is greater than 240 mm, pressure loss in each circular tube nozzle 13 becomes large, as a result of which the force for causing the cooling water to penetrate the retained water membrane is reduced.
  • the jetting velocity of the cooling water from each nozzle is necessary for the jetting velocity of the cooling water from each nozzle to be greater than or equal to 6 m/s, and, preferably, greater than or equal to 8 m/s. This is because, if the jetting velocity is less than 6 m/s, the force for causing the cooling water to penetrate the retained water membrane becomes extremely weak. It is preferable that the jetting velocity be greater than or equal to 8 m/s because it is possible to achieve higher cooling capability. In addition, it is desirable that the distance from the lower end of each cooling water injection nozzle 13 for upper surface cooling to the surface of the steel plate 1 be from 30 to 120 mm.
  • the distance is less than 30 mm, the frequency with which the steel plate 1 collides with the partition wall 15 is extremely high, as a result of which it becomes difficult to maintain facilities. If the distance exceeds 120 mm, the force for causing the cooling water to penetrate the retained water membrane becomes extremely small.
  • draining rollers 20 may be set in front of and behind the upper header 11. This causes a cooling zone length to become constant, and facilitates temperature control.
  • the flow of cooling water in the conveyance direction of the steel plate is intercepted by the draining rollers 20.
  • the cooling water tends to be retained near the draining rollers 20.
  • the cooling water injection nozzles in a most upstream side row in the conveyance direction of the steel plate among the rows of the circular tube nozzles 13 that are arranged side by side in the width direction of the steel plate be tilted by 15 to 60 degrees upstream in the conveyance direction of the steel plate, and the cooling water injection nozzles in a most downstream side row in the conveyance direction of the steel plate among the rows of the circular tube nozzles 13 that are arranged side by side in the width direction of the steel plate be tilted by 15 to 60 degrees downstream in the conveyance direction of the steel plate.
  • This makes it possible to also supply the cooling water to locations close to the draining rollers 20, and increase cooling efficiency without the cooling water being retained near the draining rollers 20. Therefore, this is desirable.
  • the distance between the lower surface of the upper header 11 and the upper surface of the partition wall 15 is set such that the cross sectional area of a flow path in the width direction of the steel plate in a space surrounded by the lower surface of the header and the upper surface of the partition wall becomes greater than or equal to 1.5 times the total cross sectional area of the inside diameters of the cooling water injection nozzles, and is, for example, approximately greater than or equal to 100 mm.
  • the cross sectional area of the flow path in the width direction of the steel plate is not greater than or equal to 1.5 times the total cross sectional area of the inside diameters of the cooling water injection nozzles, the drainage cooling water drained to the upper surface of the partition wall 15 from each water drainage port 17 in the partition wall cannot be drained smoothly in the width direction of the steel plate.
  • the range of water flow rate at which the greatest effect is provided is a range of values greater than or equal to 1.5 m 3 /(m 2 ⁇ min). If the water flow rate is lower therethan, the retained water membrane does not become so thick that, even if a publicly known technology for cooling a steel plate by causing rod-like cooling water to fall freely is applied, there are cases in which temperature irregularities in a width direction do not become large. In contrast, even when the water flow rate is greater than 4.0 m 3 /m 2 ⁇ min, the use of the technology according to the present invention is effective. However, since there are practical problems such as an increase in facility costs, the most practical water flow rate is from 1.5 to 4.0 m 3 /m 2 ⁇ min.
  • the application of the cooling technology according to the present invention is particularly effective when draining rollers are disposed in front of and behind the cooling header.
  • the header is relatively long in a longitudinal direction (when its length is approximately 2 to 4 m)
  • a cooling apparatus at a side of the lower surface of the steel plate is not particularly limited to certain apparatus.
  • a cooling lower header 12 including circular tube nozzles 14 as with the cooling apparatus at the upper surface side is shown as an example.
  • a partition wall 15 for draining cooling water in the width direction of the steel plate need not be provided as it is for cooling the side of the upper surface of the steel plate.
  • a publicly known technology for supplying, for example, membranous cooling water or spray cooling water may be used.
  • the first shape correcting apparatus 5 By correcting the shape of the steel plate 1 by the first shape correcting apparatus 5, it is possible to bring the injection nozzles of the descaling apparatus 4 closer to the surface of the steel plate 1.
  • the jetting distance H distance between each injection nozzle of the descaling apparatus 4 and the surface of the steel plate 1 is set from 40 mm to 200 mm, descaling capability is increased. Since it is sufficient for, for example, the jetting flow rate and the jetting pressure for obtaining a predetermined energy density E to be small, it is possible to reduce pumping power of the descaling apparatus 4.
  • the accelerated cooling apparatus 6 is such that the cooling water supplied from the upper-portion cooling water injection nozzles 13 via the water supply ports 16 cool the upper surface of the steel plate 1 and becomes drainage hot water, and flows in the width direction of the steel plate 1 from locations above the partition wall 15 with the water drainage ports 17 in which the upper-portion cooling water injection nozzles 13 are not inserted being water drainage paths.
  • the drainage water after the cooling is quickly removed from the steel plate 1. Therefore, when portions of the cooling water flowing from the upper-portion cooling water injection nozzles 13 via the water supply ports 16 successively contact the steel plate 1, it is possible to provide sufficient cooling power that is the same in the width direction.
  • temperature irregularities in the width direction of the steel plate subjected to accelerated cooling are approximately 40°C when descaling such as that according to the present invention is not performed.
  • temperature irregularities in the width direction of the steel plate subjected to accelerated cooling are reduced to approximately 10°C after performing descaling by using the descaling apparatus 4 according to the present invention with the energy density of cooling water being greater than or equal to 0.10 J/mm 2 .
  • temperature irregularities in the width direction of the steel plate subjected to accelerated cooling by using the accelerated cooling apparatus 6 shown in Fig. 4 are reduced to approximately 4°C.
  • Temperature irregularities of the steel plate in the width direction were calculated from the results of measurement of a steel plate surface temperature distribution after the accelerated cooling by a scanning-type thermometer.
  • any distortion that has occurred during rolling is corrected by the first shape correcting apparatus 5, and descaling of the steel plate 1 is performed by the descaling apparatus 4, to stabilize controllability of the cooling. Therefore, the steel plate 1 whose shape is to be corrected by the second shape correcting apparatus 7 originally has high flatness and the temperature of the steel plate 1 is uniform. Consequently, correction reaction force of the second shape correcting apparatus 7 need not be very high.
  • the distance between the accelerated cooling apparatus 6 and the second shape correcting apparatus 7 may be longer than a longest length of the steel plate 1 that is produced in a rolling manufacturing line. By this, for example, reverse correction may often by performed by the second shape correcting apparatus 7.
  • time t from after the end of removal of scale on the steel plate 1 by the descaling apparatus 4 to the starting of the cooling of the steel plate 1 by the accelerated cooling apparatus 6 is desirably less than or equal to 42 s, more desirably, less than or equal to 19 s, and, even more desirably, less than or equal to 5 s.
  • the energy density of cooling water is a value defined by "the aforementioned water flow rate ⁇ jetting pressure ⁇ collision time".
  • the collision time (s) is the time during which descaling water is jetted to the surface of the steel plate, and is obtained by dividing the spray jet thickness by the transport velocity.
  • the accelerated cooling apparatus 6 was formed into a facility provided with flow paths allowing the cooling water supplied to the upper surface of the steel plate to flow to locations above the partition wall as shown in Fig. 4 , and to be drained from a side in the width direction of the steel plate as shown in Fig. 7 .
  • holes each having a diameter of 12 mm, were formed in a grid pattern, and, as shown in Fig. 6 , the upper-portion cooling water injection nozzles were inserted in the corresponding water supply ports arranged in a staggered pattern form, and the remaining holes were used as water drainage ports.
  • the distance between the lower surface of the upper header and the upper surface of the partition wall was 100 mm.
  • Each upper-portion cooling water injection nozzle of the accelerated cooling apparatus 6 having an inside diameter of 5 mm, an outside diameter of 9 mm, and a length of 170 mm, was such that the upper end of each nozzle was caused to protrude into the interior of the header.
  • the jetting velocity of rod-like cooling water was 8.9 m/s.
  • the nozzle pitch in the width direction of the steel plate being 50 mm, and the nozzles were arranged side by side in 10 rows in the longitudinal direction in a zone in which the distance between table rollers was 1 m.
  • the water flow rate at the upper surface was 2.1 m 3 /(m 2 ⁇ min).
  • each nozzle for cooling the upper surface was set so as to be at an intermediate position between the upper and lower surfaces of the partition wall having a plate thickness of 25 mm.
  • the distance from the lower end of each nozzle for cooling the upper surface to the surface of the steel plate was 80 mm.
  • a cooling facility that was the same as the upper surface cooling facility except that a partition wall was not included was used, and the water flow rate and the jetting velocity of the rod-like cooling water were 1.5 times those in the upper surface cooling facility.
  • the distance L from the descaling apparatus 4 to the accelerated cooling apparatus 6, the transport velocity V of the steel plate, and the time t from the descaling apparatus 4 to the accelerated cooling apparatus 6 were variously changed.
  • the shape of the steel plate was evaluated on the basis of an additional correction rate (%). More specifically, if warp of the entire length of the steel plate and/or warp in the entire width of the steel plate were within a standard value determined on the basis of product standards corresponding to those of the steel plate, the result was "pass", whereas if they exceeded the standard value, the result was "member to be subjected to additional correction", and the additional correction rate was calculated by the formula "(number of members to be subjected to additional corrections)/(all members)) ⁇ 100".
  • Example 1 of present invention Yes 130 8.3 ⁇ 10 -4 3.6 ⁇ 10 -6 0.60 5 0.32 9.4 ⁇ 10 -3 16 5 1.65
  • Example 2 of present invention Yes 130 8.3 ⁇ 10 -4 3.6 ⁇ 10 -6 0.32 5 0.6 5.0 ⁇ 10 -3 8 4 1.65
  • Example 3 of present invention Yes 130 8.3 ⁇ 10 -4 3.6 ⁇ 10 -6 0.10 5 1.9 1.6 ⁇ 10 -3 3 2 1.65
  • Example 4 of present invention Yes 130 8.3 ⁇ 10 -4 3.6 ⁇ 10 -6 0.60 14 0.32 9.4 ⁇ 10 -3 44 12 1.65
  • Example 5 of present invention Yes 130 8.3 ⁇ 10 -4 3.6 ⁇ 10 -6 0.60 5 0.32 9.4 ⁇ 10 -3 44 12 1.65
  • Example 5 of present invention Yes 130 8.3 ⁇ 10 -4 3.6 ⁇ 10 -6 0.60 5 0.32 9.4 ⁇ 10 -3 44 12 1.65
  • Example 5 of present invention Yes 130 8.3 ⁇ 10 -4 3.6 ⁇ 10
  • Examples 1 to 5 of the present invention in Table 1 since the energy densities were greater than or equal to 0.10 J/mm 2 , the additional correction rates, resulting from unsuitable shapes, were low, so that good results were obtained. This is thought to be because, when the cooling was performed by the accelerated cooling apparatus 6, the cooling was uniformly performed almost without any variations in the surface temperature at locations in the width direction, and flatness thought to result from the temperature distribution of the steel plate was excellent, as a result of which the additional correction rates, resulting from improper shapes, were reduced. In Examples 1 to 5, scale was removed, so that surface properties were good.
  • the surface properties were evaluated by determining the existence/absence of scale from image processing performed by using an image of the surface of the steel plate cooled to room temperature, the image processing making use of the difference between the color tones of a portion where the scale remained and a portion where the scale had been removed.
  • the time t from after the end of the removal of scale on the steel plate 1 by the descaling apparatus 4 to the starting of the cooling of the steel plate 1 by the accelerated cooling apparatus 6 was less than or equal to 19 s, corresponding to a condition in which the cooling by the accelerated cooling apparatus 6 stabilized, regardless of the transport velocity V of the steel plate. Therefore, the additional correction rate was good at a value less than or equal to 5%.
  • Example 5 of the present invention good results were obtained by setting the energy density within the range of the present invention without a high collision pressure (1.0 MPa), such as those in Patent Literature 1 and Patent Literature 2, being required.
  • Comparative Example 2 by partly removing the scale, the temperature distribution in the width direction of the steel plate became poor and, thus, the flatness of the steel plate also became poor. Therefore, the additional correction rate was 70%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Claims (7)

  1. Einrichtung zum Herstellen einer Stahlplatte, umfassend:
    eine Heißrollvorrichtung (3), eine formkorrigierende Einrichtung (5), eine Entzunderungsvorrichtung (4) und eine beschleunigte Kühlvorrichtung (6), die in dieser Reihenfolge von einer vorgelagerten Seite in einer Beförderungsrichtung angeordnet sind, wobei die beschleunigte Kühlvorrichtung (6) einen Sammler (11) umfasst, der Kühlwasser an eine obere Fläche der Stahlplatte (1) liefert, und Abtropfrollen (20), die vor und hinter dem Sammler (11) angeordnet sind,
    dadurch gekennzeichnet, dass die Entzunderungsvorrichtung (4) angeordnet ist, um Kühlwasser in Richtung einer Fläche einer Stahlplatte (1) mit einer Energiedichte E größer oder gleich 0,10 J/mm2 sprüht, wobei die Energiedichte E definiert ist durch entweder: E = Q/ (d x W) x pv2/2 x t ,
    wobei Q: Entzunder-Wassersprühflussrate [m3/s], d: Sprühstrahldicke [mm] der Breitdüse, W: Sprühstrahlbreite [mm] der Flachdüse, p: Fluiddichte [kg/m3], v: Fluidgeschwindigkeit [m/s] während des Aufpralls an der Stahlplatte und t: Aufprallzeit [s];
    oder durch Wasserflussmengendichte x Sprühdruckaufprallzeit,
    wobei die Wasserflussmengendichte [m3/(mm2·min)] über die Sprühflussrate des Kühlwassers ÷ Kühlwasseraufprallbereich berechnet wird, der Sprühdruck [MPa] durch den Ausstoßdruck des Kühlwassers definiert wird und die Aufprallzeit [s] über die Kühlwasseraufpralldicke ÷ Transportgeschwindigkeit der Stahlplatte berechnet wird,
    wobei die Einrichtung ferner dadurch gekennzeichnet ist, dass die beschleunigte Kühlvorrichtung (6) ferner beinhaltet:
    Kühlwasserinjektionsdüsen (13), die in Reihen angeordnet sind, wobei jede Reihe Kühlwasserinjektionsdüsen umfasst, die Seite an Seite in einer Breitenrichtung der Stahlplatte (1) angeordnet und von dem Sammler (11) aufgehängt sind, wobei die Kühlwasserinjektionsdüsen (13) in einer am weitesten vorgelagerten Seitenreihe in die Beförderungsrichtung vorgelagert geneigt sind und die Kühlwasserinjektionsdüsen (13) auf einer am weitesten nachgelagerten Seite in der Beförderungsrichtung nachgelagert geneigt sind.
  2. Einrichtung zum Herstellen einer Stahlplatte nach Anspruch 1, wobei eine Transportgeschwindigkeit V [m/s] von der Entzunderungsvorrichtung (4) zu der beschleunigten Kühlvorrichtung (6) und eine Stahlplattentemperatur T [K] vor dem Kühlen und eine Distanz L [m] von der Entzunderungsvorrichtung (4) zu der beschleunigten Kühlvorrichtung (6) die Formel befriedigt: L ≤ V × 5 × 10 − 9 × exp 25000 / T .
    Figure imgb0012
  3. Einrichtung zum Herstellen einer Stahlplatte nach Anspruch 2, wobei die Entzunderungsvorrichtung (4) und die beschleunigte Kühlvorrichtung (6) derart angeordnet sind, dass die Distanz L von der Entzunderungsvorrichtung (4) zu der beschleunigten Kühlvorrichtung (6) kleiner oder gleich 12 m ist.
  4. Einrichtung zum Herstellen einer Stahlplatte nach einem der Ansprüche 1 bis 3, wobei eine Sprühdistanz H von einer Injektionsdüse der Entzunderungsvorrichtung (4) zu der Fläche der Stahlplatte (1) größer oder gleich 40 mm und kleiner oder gleich 200 mm ist.
  5. Einrichtung zum Herstellen einer Stahlplatte nach einem der Ansprüche 1 bis 4, wobei die beschleunigte Kühlvorrichtung (6) ferner eine Trennwand (15) beinhaltet, die zwischen der Stahlplatte (1) und dem Sammler (11) angeordnet ist,
    wobei die Trennwand (15) mit einer Vielzahl von Wasserversorgungsanschlussstellen (16) bereitgestellt wird, in die untere Enden der Kühlwasserinjektionsdüsen (13) eingeführt werden, und eine Vielzahl von Wasserablaufanschlusstellen (17) durch die das Kühlwasser, das an die obere Fläche der Stahlplatte (1) geliefert wird, an Positionen über der Trennwand (15) abgeleitet wird, und wobei die Kühlwasserinjektionsdüsen angeordnet sind, stabartiges Kühlwasser zu sprühen.
  6. Verwendung der Einrichtung nach einem der Ansprüche 1 bis 5 in einem Verfahren zum Herstellen einer Stahlplatte, umfassend
    einen Heißrollschritt unter Verwendung der Heißrollvorrichtung (3), einen heißkorrigierenden Schritt unter Verwendung der formkorrigierenden Vorrichtung (5) und einen Schritt des beschleunigten Kühlens unter Verwendung der beschleunigten Kühlvorrichtung (6), die in dieser Reihenfolge durchgeführt werden, um die Stahlplatte (1) herzustellen, wobei das Verfahren ferner umfasst:
    einen Entzunderungsschritt unter Verwendung der Entzunderungsvorrichtung (4) zum Sprühen von Kühlwasser mit einer Energiedichte E größer oder gleich 0,10 J/mm2 auf eine Fläche der Stahlplatte (1) zwischen dem heißkorrigierenden Schritt und dem Kühlschritt.
  7. Verwendung der Einrichtung nach Anspruch 6, wobei eine Zeit t [s] ab Abschluss des Entzunderungsschritts bis zum Starten des Schritts des beschleunigten Kühlens die Formel erfüllt: t ≤ 5 × 10 − 9 × exp 25000 / T ,
    Figure imgb0013
     wobei T: Stahlplattentemperatur (K) vor dem Kühlen.
EP14775597.9A 2013-03-27 2014-03-20 Verfahren und vorrichtung zur herstellung dicker stahlplatten Active EP2979770B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013065342 2013-03-27
PCT/JP2014/001615 WO2014156086A1 (ja) 2013-03-27 2014-03-20 厚鋼板の製造設備および製造方法

Publications (3)

Publication Number Publication Date
EP2979770A1 EP2979770A1 (de) 2016-02-03
EP2979770A4 EP2979770A4 (de) 2016-03-16
EP2979770B1 true EP2979770B1 (de) 2018-08-22

Family

ID=51623100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14775597.9A Active EP2979770B1 (de) 2013-03-27 2014-03-20 Verfahren und vorrichtung zur herstellung dicker stahlplatten

Country Status (6)

Country Link
EP (1) EP2979770B1 (de)
JP (1) JP5962849B2 (de)
KR (1) KR101742607B1 (de)
CN (1) CN105102142B (de)
TW (1) TWI565541B (de)
WO (1) WO2014156086A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6377550B2 (ja) * 2015-03-06 2018-08-22 株式会社神戸製鋼所 厚鋼板冷却方法及び厚鋼板冷却装置
JP2016182622A (ja) * 2015-03-26 2016-10-20 Ｊｆｅスチール株式会社 継目無鋼管素材穿孔用プラグの余剰スケール除去方法及び装置並びに前記プラグの使用方法
WO2018029768A1 (ja) * 2016-08-09 2018-02-15 東芝三菱電機産業システム株式会社 圧延機の出側温度制御システム
JP6521193B1 (ja) * 2017-09-28 2019-05-29 Ｊｆｅスチール株式会社 鋼板の製造設備および鋼板の製造方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0238283B2 (ja) * 1983-02-09 1990-08-29 Mitsubishi Heavy Ind Ltd Kohanreikyakusochi
JPH0957327A (ja) 1995-08-22 1997-03-04 Sumitomo Metal Ind Ltd 厚鋼板のスケール除去方法
JPH10113713A (ja) * 1996-10-09 1998-05-06 Kobe Steel Ltd 制御冷却鋼板の製造方法
JP2000015323A (ja) * 1998-06-30 2000-01-18 Sumitomo Metal Ind Ltd 表面性状の良好な熱延鋼板の製造方法
JP3872609B2 (ja) * 1999-03-10 2007-01-24 新日本製鐵株式会社 高Ｓｉ鋼の熱間圧延方法
JP3994582B2 (ja) * 1999-06-29 2007-10-24 住友金属工業株式会社 鋼板のデスケーリング方法
JP3796133B2 (ja) 2000-04-18 2006-07-12 新日本製鐵株式会社 厚鋼板冷却方法およびその装置
KR100496607B1 (ko) * 2000-12-27 2005-06-22 주식회사 포스코 열연코일의 제조방법 및 그 장치
JP2003181522A (ja) * 2001-12-14 2003-07-02 Nippon Steel Corp 表面性状の優れた鋼板の製造方法及びその装置
JP5614040B2 (ja) * 2009-03-25 2014-10-29 Ｊｆｅスチール株式会社 厚鋼板の製造設備及び製造方法
CN202061902U (zh) * 2011-01-22 2011-12-07 马鞍山钢铁股份有限公司 冷轧用热轧钢板氧化铁皮清除装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
JPWO2014156086A1 (ja) 2017-02-16
KR101742607B1 (ko) 2017-06-01
WO2014156086A1 (ja) 2014-10-02
KR20150138269A (ko) 2015-12-09
TWI565541B (zh) 2017-01-11
CN105102142B (zh) 2018-06-12
JP5962849B2 (ja) 2016-08-03
TW201501829A (zh) 2015-01-16
EP2979770A1 (de) 2016-02-03
EP2979770A4 (de) 2016-03-16
CN105102142A (zh) 2015-11-25

Similar Documents

Publication Publication Date Title
EP2412455B1 (de) Herstellungsverfahren einer stahlplatte
EP2979770B1 (de) Verfahren und vorrichtung zur herstellung dicker stahlplatten
JP4779749B2 (ja) 鋼板の冷却方法および冷却設備
EP2979769B1 (de) Verfahren und vorrichtung zur herstellung dicker stahlplatten
KR102559142B1 (ko) 금속 기판을 냉각하기 위한 프로세스 및 기기
JP2008100255A (ja) 鋼板の冷却設備および冷却方法
JP2003094106A (ja) 鋼板の冷却方法および装置
JP2011025282A (ja) 厚鋼板の冷却設備および冷却方法
JP5685861B2 (ja) 熱鋼板の水切り装置、水切り方法および冷却設備
EP3195946B1 (de) Verfahren zur herstellung dicker stahlplatten
EP3187275B1 (de) Herstellungsverfahren für dicke stahlplatte
JP5597916B2 (ja) 鋼材の冷却設備
JP5347781B2 (ja) 熱鋼板の冷却設備および冷却方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150925

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

A4 Supplementary search report drawn up and despatched

Effective date: 20160215

RIC1 Information provided on ipc code assigned before grant

Ipc: B21B 45/02 20060101ALI20160209BHEP

Ipc: B21B 1/38 20060101ALI20160209BHEP

Ipc: B21B 45/08 20060101AFI20160209BHEP

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20170322

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20180313

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1031861

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180915

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602014030930

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20180822

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181123

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181122

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181122

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181222

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1031861

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602014030930

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20190523

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190320

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190320

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190331

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190320

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190320

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190331

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181222

Ref country code: MT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190320

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602014030930

Country of ref document: DE

Representative=s name: HL KEMPNER PATENTANWAELTE, SOLICITORS (ENGLAND, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 602014030930

Country of ref document: DE

Representative=s name: HL KEMPNER PATENTANWALT, RECHTSANWALT, SOLICIT, DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20140320

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180822

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240130

Year of fee payment: 11