EP3914403A1 - Device and method for descaling a moving workpiece - Google Patents
Device and method for descaling a moving workpieceInfo
- Publication number
- EP3914403A1 EP3914403A1 EP20700891.3A EP20700891A EP3914403A1 EP 3914403 A1 EP3914403 A1 EP 3914403A1 EP 20700891 A EP20700891 A EP 20700891A EP 3914403 A1 EP3914403 A1 EP 3914403A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- workpiece
- scale
- collecting device
- roller table
- collecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 102
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 238000005245 sintering Methods 0.000 claims description 32
- 238000000926 separation method Methods 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 22
- 238000005096 rolling process Methods 0.000 claims description 20
- 238000011010 flushing procedure Methods 0.000 claims description 15
- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000005098 hot rolling Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 description 23
- 239000007921 spray Substances 0.000 description 16
- 238000011161 development Methods 0.000 description 9
- 230000018109 developmental process Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012223 aqueous fraction Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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
- B21B45/04—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
- B21B45/06—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 of strip material
-
- 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
Definitions
- the invention relates to a device according to the preamble of claim 1 and a method according to the preamble of claim 15 for descaling a workpiece which is moved relative to the device in one direction of movement.
- the workpiece is, in particular, a hot rolled product.
- a scale washer in a hot rolling mill is an assembly that is used to remove scale, i.e. H. of impurities from iron oxide, is provided from the surface of the rolling stock.
- a scale washer is known from WO 2005/082555 A1, with which a rolling stock that is moved relative to the scale washer is descaled by irradiation with high-pressure spray water.
- This scale washer comprises at least one row of nozzle heads with a plurality of nozzle heads that span the width of the rolling stock, each nozzle head being driven in rotation by a motor about an axis of rotation perpendicular to the rolling stock surface. Furthermore, at least two nozzles arranged eccentrically with respect to the axis of rotation are provided for each nozzle head, and are arranged as close as possible in terms of construction to the circumference of the nozzle head.
- Such a scale washer is subject to the disadvantage that an energy input across the width of the rolling stock can have inhomogeneities, so that there are permanent temperature streaks on the rolling stock in the overlapping area of adjacent nozzle heads.
- the nozzles on the respective nozzle heads are arranged inclined outwards by an angle of attack, which is illustrated in FIG. 14. This leads to the fact that the direction of injection of these nozzles when the nozzle heads are rotated about their axis of rotation also in the direction of the advance of the nozzle Rolled good is aligned.
- Such alignment of the high-pressure spray water discharged from the nozzles is disadvantageous in that the jet of the spray water is ineffective and therefore makes no contribution to descaling the surface of the rolling stock.
- WO 2005/082555 A1 discloses a generic device and a generic method for descaling a workpiece that is moved in a direction of movement relative to the device.
- jet nozzles are attached to a rotating rotor head, liquid being sprayed or sprayed under high pressure from the jet nozzles onto a surface of the rolling stock in such a way that the direction of radiation with which the liquid is sprayed out of the jet nozzles onto the surface of the workpiece , is always applied at an angle of inclination with respect to an orthogonal to a surface of the rolling stock.
- a method and a device for descaling the surfaces of slabs, strips or the like are known, wherein a fluid under high pressure is radiated onto the surface of the by means of one or more nozzle or spray bars and through nozzles attached thereto material to be descaled is injected.
- the nozzles for spraying the fluid are firmly attached to a spray bar without rotating.
- the water and the scale particles thereby removed from a surface of the rolling stock enter a sintering channel located below the rolling mill.
- the water and the scale particles are collected into a mixture in connection with proportions of Oil and fat that come from the mill stands.
- the nip lubricating oil and the excess lubricant for the bearings of the stand rollers and the rollers of the rolling mill also reach the sintering channel.
- the water and the removed scale particles, which originate from the descaling process are now contaminated with oil or fat, which on the one hand prevents direct reuse of the scale particles and on the other hand requires complex treatment or clarification of the water.
- Another disadvantage of conventional scale washers is that their proper function is linked to a minimum amount of water and a minimum inclination of the sintering channel, which prevents the use of water-saving measures or corresponding processes.
- the invention has for its object to optimize the descaling of a workpiece, with a view to reusability of worn scale and a liquid used for this purpose, preferably in the form of water, with simple means.
- a device for descaling a workpiece, preferably a hot rolling stock, and comprises at least one head element, to which a plurality of blasting nozzles are attached, a liquid, in particular water, from the blasting nozzles onto the workpiece at an angle of incidence obliquely with respect to an orthogonal a surface of the workpiece can be brought out, and a roller table on which the workpiece can be moved in a direction of movement relative to the head element. Below the roller table are means for picking up or removing arranged by tinder, which has been removed from a surface of the workpiece by the liquid discharged from the jet nozzles.
- the invention also provides a method for descaling a workpiece, preferably a hot rolled product.
- the workpiece is moved relative to a device with at least one head element, to which a plurality of jet nozzles are attached, on a roller table in one direction of movement, a liquid, in particular water, being applied from the jet nozzles onto the workpiece at an angle of incidence at an angle to the surface of the workpiece becomes.
- Tinder which has been removed from a surface of the workpiece by the liquid discharged from the jet nozzles, is transferred into or onto means for receiving or removing this tinder, these means being arranged below the roller table.
- the invention is based on the essential finding that the scale, which has been removed from a surface of the workpiece by using a (high-pressure) liquid, is absorbed or transported away by means which are arranged below the roller table. This ensures that the scale does not get into the sintering channel and is therefore collected separately and thus oil-free by the means mentioned.
- These agents are expediently equipped with dewatering measures so that the liquid, preferably water, with which the scale has been removed from a surface of the workpiece can flow off and the scale is suitably dewatered on or in the agents. In this way, the scale can be reused directly, for example as sintered material, without further pretreatment steps.
- a head element to which a plurality of jet nozzles are attached for dispensing or spraying out a liquid, can be designed as, in particular, stationary spray bars.
- Said means for receiving or removing scale can be designed as a container or from a plurality of such containers, which can be or can be suitably positioned below the roller table to receive the removed scale.
- these means can also be designed as a conveyor belt, which preferably rotates transversely to the direction of movement of the workpiece and thereby removes the scale to a location at which the scale can be stored or received.
- a container or a conveyor belt underneath the roller table ensures that the scale removed from the surface of the workpiece does not fall into the sintering channel and mix there with oil or fat.
- scale that has been removed from a surface on an upper side of the workpiece can be collected.
- a head element with jet nozzles attached to it and a collecting device are provided above the roller table.
- the catchment device is arranged upstream of the head element with respect to the direction of movement of the rolling stock.
- the scale which has collected in the collecting device after removal from a surface of the workpiece on the upper side thereof, can be discharged from this collecting device by using flushing nozzles, from which a fluid, preferably in the form of Water and under pressure, the tinder within the catcher towards one side edge thereof. An opening is formed on this side edge, through which the scale is then removed from the collecting device and falls down into or onto the means for receiving or removing scale.
- a separation of the water and the scale outside of the collecting device after the scale has emerged from the opening on the side edge of the collecting device is advantageously achieved in that a collecting pipeline for collecting the water is arranged adjacent to the opening formed in the side edge, wherein this manifold is spaced from the opening in such a way that a gap is formed between them.
- the means for picking up or removing scale is positioned just below this gap.
- the scale is discharged from the collecting device through the opening on the side edge thereof, the scale or the associated scale blocks, following gravity, fall directly into or through the gap through said gap the means for picking up or removing scale, the fluid, preferably water, flowing over this gap due to the kinetic energy and then being collected by the collecting pipeline.
- the collecting pipeline is connected to a separate water treatment system. This ensures that the water with which scale has been removed from a surface of the workpiece on the upper side thereof does not get into the sintering channel, but instead is fed to the water treatment layer through a separate return line.
- water from the flushing nozzles which are provided for dispensing the scale within the collecting device, is not discharged permanently, but instead only at intervals.
- these flushing nozzles are only switched on periodically, but are not constantly in operation. Accordingly, it can first be waited until a sufficient amount of scale has accumulated in the collecting device after removal from a surface of the workpiece on the upper side thereof, before then - if there is a sufficient amount of scale - the water from the flushing nozzles in the direction of a Side edge of the collecting device and the opening formed therein is sprayed in order to discharge the scale from this opening laterally out of the collecting device.
- a fluid preferably water
- a fluid is dispensed from the flushing nozzles under high pressure. This ensures that the scale accumulated in the collecting device is effectively moved in the direction of a side edge and the opening formed therein and in a short time.
- a dividing element is arranged in a central section of the collecting device with which the collecting device is divided into two areas, ie to the left and right of the center.
- a dividing element can be designed in the form of a plow, the tip of which points in the direction of the head element and the jet nozzles attached to it.
- the liquid discharged from the jet nozzles after bouncing off the surface of the workpiece and the scale particles thereby removed reach the two partial areas of the collecting device to the left and to the right.
- the flushing nozzles are each arranged in the shade of the plow and are each aligned in the direction of the openings on a side edge of the collecting device.
- mechanical transport elements can be arranged within the collecting device, the collecting device having an opening on at least one side edge thereof.
- the collecting device having an opening on at least one side edge thereof.
- the transport elements mentioned above which can be arranged within the collecting device, can be designed as a screw, pusher, stamp, conveyor belt or the like. In any case, such mechanical transport elements ensure that removed scale can be moved within the collecting device in a targeted manner in the direction of the opening formed on one side edge thereof, in order to discharge the scale out of the collecting device through this opening.
- the present invention it is also possible to remove scale from a surface of the workpiece on the underside thereof.
- at least one head element with jet nozzles attached to it and - seen in the direction of movement of the workpiece - upstream of the head element and adjacent thereto, an elongated separation device are provided below the roller table.
- An upper edge of the separation device adjoins an underside of the roller table, wherein the separation device extends essentially vertically downwards from the underside of the roller table and the means for receiving or removing removed scale are arranged on one side of the separation device, which is the head element facing each other.
- the fact is used that water and scale are reflected at different angles from an underside of the workpiece.
- the scale bounces off the underside of the workpiece almost vertically downwards and then falls into or onto the means for receiving scale, for example in the form of a container, which is positioned below the roller table on the side of the separation device faces the head element with the jet nozzles attached to it.
- the water jet has when reflected from the underside of the workpiece, a significantly larger horizontal component, with the result that the angle at which the water is reflected from the underside of the workpiece is larger in comparison than with the scale.
- the water then reaches the other side of the separation device, which is opposite the head element with the jet nozzles attached to it.
- scale and water are suitably separated from one another on the underside of the roller table, the water being able to be introduced into a separate water treatment system in a targeted manner through separate lines, without getting into the sintering channel
- Descaling water is collected in a part or area that is spatially separated from the sintering channel, in which case this oil-free water can be fed to a suitable treatment stage of a water treatment system with little effort through separate return lines.
- the water is directed past the sintering well and is only introduced downstream into the line system of the water treatment plant.
- it is possible that the water is fed directly to a cooling tower.
- the present invention is particularly suitable for use in a primary scale washer. This is due to the fact that primary scale typically consists of larger and thicker particles that are easier to collect and separate from the water. In addition, the amount of primary scale that is removed from the surfaces of a workpiece relatively large, so that additional effort for the components according to the invention explained above can be economically represented.
- scale washers of such a type that reduce the amount of water used to a minimum. This reduces the amount of water needed for descaling, making it easier to separate worn-out scale and water.
- rotating extraction units e.g. B. in the form of a rotating axis rotating rotor heads, or conventional scale washers, with which a minimal amount of water adapted to the rolling quality is achieved with minimal sufficient pressure.
- Fig. 2 is a side view of a rotor head of the device of Fig. 1
- Fig. 3 is a basically simplified plan view of an inventive
- Fig. 4 is a simplified front view of a rotor module in which a
- a plurality of rotor heads are arranged side by side and transversely to the direction of movement of the workpiece
- Fig. 5 is a simplified cross-sectional view of a collecting device of the
- Fig. 6 is a basically simplified side view of an inventive
- Fig. 7 is a basically simplified plan view of the embodiment of a
- Fig. 8 is a basically simplified side view of an inventive
- Fig. 9 is a basically simplified plan view of the embodiment of a
- FIG. 10 is a side view of a collecting device and a head element with jet nozzles attached to it, as part of the device of FIG. 1,
- FIG. 11 shows a basically simplified plan view of the components from FIG. 10
- FIG. 12 shows a fundamentally simplified side view of an inventive device
- FIG. 13 shows a schematic diagram of components of a
- FIGS. 1 to 13 Various embodiments of the invention are described in detail below with reference to FIGS. 1 to 13.
- the same technical features are denoted by the same reference numerals.
- Cartesian coordinate systems are entered in some figures for the purpose of spatial orientation of the embodiments according to the invention in relation to a workpiece to be treated and moved.
- a device 10 according to the invention serves for descaling a workpiece 12, which is moved relative to the device 10 via a roller table 40 in a direction of movement X.
- the workpiece 12 can be hot rolled material that is moved past the device 10.
- the device 10 above the roller table 40 comprises at least one head element 14, to which a plurality of jet nozzles 16 are attached.
- jet nozzles 16 are attached.
- a liquid 18 (symbolized in dashed lines in FIG. 1 in simplified form) is sprayed from the jet nozzles 16 onto the surface 20 of the workpiece 12 in order to descaling the workpiece in a suitable manner.
- the jet nozzles 16 are in fluid communication with a high-pressure pump unit (not shown), by means of which the jet nozzles 16 are fed with a liquid under high pressure.
- the liquid 18 is preferably water, without being restricted to water only.
- the head element 14 is designed in the form of a rotor head which can be set in rotation about an axis of rotation R.
- the rotor head 14 is rotated about its axis of rotation R by motor means (not shown), for example by an electric motor.
- the head element 14 is always referred to as a rotor head, without this being a restriction to such a rotating element.
- the head element 14 can also be designed as a stationary spray bar.
- the workpiece 12 can be moved on the roller table 40 relative to the head element or rotor head 14, namely in the direction of movement X.
- the device 10 comprises a collecting device 22, which is provided above the roller table 40 and is arranged upstream of the rotor head 14 with respect to the direction of movement X of the workpiece 12.
- a collecting device 22 serves the purpose of both scaling, which has been removed by means of the high-pressure liquid from the surface 20 of the workpiece 12 on the upper side thereof, and the liquid which bounces off after contact with the surface 20 of the workpiece 12 to record.
- removed scale and the liquid that has ricocheted off the surface 20 of the workpiece 10 are symbolized in a simplified manner by dash-dotted lines.
- a lower guide plate 23.1 is provided, which is arranged between the rotor head 14 and the collecting device 22 and thereby directly adjoins an open area of the collecting device 22.
- the lower guide plate 23.1 is attached or fastened to the collecting device 22 in such a way that its free end is positioned directly above the workpiece 12 and thereby forms an angle d (FIG. 1) between 15-45 ° with the surface 20 of the workpiece.
- the lower guide plate 23.1 is preferably attached in such a way that the angle d to the surface 20 of the workpiece 12 assumes a value between 25-35 °, particularly preferably 30 °.
- the lower baffle 23.1 is arranged in a corresponding manner to the angle d of preferably 30 ° increasing in the direction of the collecting device 22.
- the lower guide plate 23.1 thus fulfills the function of a baffle surface and brings about a targeted entry of the scale and the liquid that has ricocheted off the surface 20 into the collecting device 22.
- a cover device in the form of an upper cover plate 23.2 is provided, which extends from the collecting device 22 directly to the rotor head 14 and thereby takes over the function of a cover.
- the distance between an edge of the upper cover plate 23.2, which directly adjoins the rotor head 14, is chosen such that the section between the edge of the upper cover plate 23.2 and the rotor head 14 is free of scale particles.
- “passage-free” means that scale particles, if they are detached from the surface 20 of the workpiece 12 as a result of the sprayed-out water, cannot escape between the edge of the upper cover plate 23.2 immediately adjacent to the rotor head 14 and the rotor head 14 .
- the upper cover plate 23.2 prevents scale or liquid bouncing off the surface 20 of the workpiece 12 from escaping upwards into the environment. Nevertheless, it is guaranteed that air through the Section between the upper cover plate 23.2 and the rotor head 14 can pass through, so that no back pressure forms below the upper cover plate 23.2 during operation of the device 10 according to the invention. Further relationships for the arrangement of the rotor head 14 and the jet nozzles 16 attached to it are explained below with reference to FIG. 2:
- the jet nozzles 16 are fixedly attached to an end face of the rotor head 14 opposite the workpiece 12.
- the longitudinal axes L of the jet nozzles 16 are aligned parallel to the axis of rotation R of the rotor head 14.
- the spray direction S (see FIG. 2) in which the liquid is sprayed out of the jet nozzles 16 also runs parallel to the axis of rotation R of the rotor head 14.
- the axis of rotation R is arranged obliquely with respect to an orthogonal to the surface 20 of the workpiece 12 at an angle g (FIG. 2).
- This angle of attack a corresponds to an angle between the spray direction S of the liquid 18 and an orthogonal to the surface 20 of the workpiece 12. Because of the parallel alignment of the longitudinal axes L of the jet nozzles 16 with the axis of rotation R, the angle of attack a in the embodiment of FIG. 2 is equal to the angle of inclination g of the axis of rotation R.
- the rotor head 14 can be designed to be height-adjustable.
- a distance A which an intersection of the axis of rotation R has with the end face of the rotor head 14 to the surface 20 of the workpiece 12 (FIG. 2), can be changed if necessary.
- this distance is A to be understood as the spraying distance. If this distance A is reduced, the resulting impact pressure of the liquid 18 on the surface 20 of the workpiece 12 increases.
- the height adjustability for the rotor head 14 is symbolized in a simplified manner in FIG. 2 by the arrow “H”, and can be realized by a height-adjustable holder to which the rotor head 14 is attached.
- FIG. 3 Further details for the device 10 according to the invention are shown in FIG. 3, namely in a fundamentally very simplified top view.
- two rotor heads 14.1 and 14.2 are arranged one behind the other with respect to the direction of movement X of the workpiece 12.
- Each of these rotor heads 14.1 and 14.2 is assigned its own collecting device 22, which is arranged upstream of an associated rotor head with respect to the direction of movement X of the workpiece 12.
- another type of jet nozzle can also be provided instead of the rotor head 14.2.
- the top view of FIG. 3 shows that the spray direction S, with which the liquid 18 is discharged from the jet nozzles 16 attached to a rotor head 14, runs counter to the direction of movement X of the workpiece 12.
- a plurality of rotor heads 14 are combined to form rotor head modules 30 above and below the workpiece 12, which is shown in the principally simplified front view of FIG. 4. These rotor head modules 30 thus form a pair of rotor modules 31.
- the respective rotor head modules 30 consist of a plurality of rotor heads 14 which are arranged next to one another and transversely to the direction of movement X of the workpiece.
- fewer or more than three rotor heads 14 can also be combined to form a rotor module 30.
- the width of a workpiece 12, ie in a direction transverse to its direction of movement X, is covered by a plurality of rotor heads 14, as shown.
- the width of such a rotor module 30 essentially corresponds to a width of the workpiece 12.
- the individual rotor heads 14 are connected to a common pressurized water line D, the pressurized water line D being connected to a high-pressure pump unit. This ensures that the jet nozzles 16 attached to the rotor heads are supplied with high-pressure water.
- a scale detection device 32 can be provided, which is arranged downstream of a rotor head 14 or a pair of rotor modules 31 with respect to the direction of movement X of the workpiece 12
- a scale detection device 32 is arranged downstream of the rotor head 14.2. Regardless of the number of rotor heads that can be arranged one behind the other in the present invention with respect to the direction of movement X of the workpiece 12, it is for the scale detection device 32 that it is arranged in spatial proximity and downstream of a rotor head (e.g. rotor head 14.2 according to FIG. 4) of the device 10, at least before the workpiece 12 z. B. is subjected to a new rolling process.
- a rotor head e.g. rotor head 14.2 according to FIG. 4
- the device 10 comprises a control device 34 (cf. FIG. 1, FIG. 3), with which various components of the device 10 are connected in terms of signal technology and can be suitably controlled. This is explained in more detail below
- the scale detection device 32 is connected to the control device 34 in terms of signal technology (FIG. 1, FIG. 3). Any scale remaining on the surface 20 of the workpiece 12 can be reliably detected or detected by means of the scale detection device 32 after the liquid 18 has been sprayed onto the workpiece 12. For this purpose, the scale detection device 32 extends completely over a width of the workpiece 12. Furthermore, it should be pointed out that a scale detection device 32 above and below the workpiece 12, i. H. can be provided on the top and on the bottom thereof. Correspondingly, by means of the scale detection device 32 it is possible to detect possible residual scale on both surfaces of the workpiece 12.
- FIGS. 1 and 3 symbolically show that a rotor head 14 is also connected to the control device 34 in terms of signal technology.
- the control device 34 it is possible to suitably change the pressure with which the liquid sprayed from the jet nozzles 16 impinges on a surface 20 of the workpiece 20.
- Such a change in the impact pressure of the liquid can take place, for example, by switching on or switching off a pump of the flap pressure pump unit to which the pressurized water line D for the jet nozzles 16 is connected.
- the high-pressure pump unit with which the pressure supply is ensured for the jet nozzles 16 is equipped with a frequency controller in order to achieve an even better adaptation of the desired pressure for the jet nozzles 16.
- the speed at which the rotor head 14 is rotated about its axis of rotation R can also be adjusted by means of the control device 34, for example depending on the feed rate at which the workpiece is moved past the device 10 in its direction of movement X.
- the speed of rotation for the rotor head 14 in particular to the feed speed of the workpiece 12 in its direction of movement X, an optimal energy input is achieved for the liquid 18 sprayed onto the surface 20 of the workpiece 12, namely along the direction of movement X. Further details are given below
- the device 10 according to the invention is also explained with reference to the collecting device 22 arranged above the roller table 40 with reference to FIGS. 5-11.
- FIG. 5 shows a cross-sectional view of the collecting device 22, seen over a width of the roller table 40 (not shown in FIG. 5).
- a bottom surface 25 of the collecting device 22 is essentially horizontal.
- the bottom surface 25 to the side edges 24 of the collecting device 22 can also be designed to slope off laterally, starting from a central section M of the collecting device 22.
- the collecting device 22 is equipped with rinsing nozzles 28, which are each aligned in the direction of a side edge 24 of the collecting device 22. If, during the descaling of the workpiece 12, scaled material has accumulated on the bottom surface 25 of the collecting device 22, the scaling is discharged out of the collecting device 22 by a fluid 19, preferably water under high pressure, being applied to the washing device 28 Tinder is sprayed in the direction of a side edge 24, which is explained in more detail below. Alternatively, it is also possible to dispense a fluid 19 in the form of compressed air from the flushing nozzles 28, which leads to the same effect as the spraying out of water.
- FIG. 6 shows the device 10 according to the invention in a principally simplified side view.
- An opening 44 is formed on or in a side edge 24 of the collecting device 22 arranged above the roller table 40. Laterally adjacent to this opening 44, and outside of the collecting device 22, a steering plate 45 is arranged.
- the device of FIG. 6 is shown again in a top view in the illustration of FIG. 7.
- the device 10 comprises means 42 for picking up or removing scale, which are arranged below the roller table 40 and in the embodiment shown here are designed in the form of a plurality of containers 43.
- a separate aisle or guide mechanism is created, which crosses a rolling mill or roller table 40 above a sintering channel 54.
- the guide mechanism for the container 43 is set up in such a way that there is always a (initially empty) container 43 directly below the deflection plate 45.
- the cleaning liquid and scale Z are discharged from the collecting device 22 in such a way that a fluid 19, preferably water under flap pressure, from the flushing nozzles 28 onto the scale Z, which has accumulated on the bottom surface 25 of the collecting device 22, in the direction of one Side edge 24 is discharged or sprayed.
- a fluid 19 preferably water under flap pressure
- the scale particles Z come into contact with the water 19 through the opening 44 to the outside and are deflected downward by the deflection plate 45 in order to thereby get into a container 43 located underneath.
- a container 43, in which scale particles Z are taken up in connection with water, is positioned above the sintering channel 54.
- drainage openings are expediently formed, through which water (but not scale) can escape downwards.
- a modified embodiment for the discharge principle, with which scale particles Z and water are discharged through an opening 44 in a side edge 24 of the collecting device, is illustrated in a side view of the device 10 according to FIG. 8 and in a corresponding top view according to FIG. 9.
- rinsing nozzles 28 are provided with which a fluid 19, preferably water under (flock) pressure, is applied in the direction of the opening 44, which is formed in a side edge 24 of the collecting device 22 to thereby move the scale particles Z accumulated on the bottom surface 25 in the direction of the opening 44.
- a collecting pipeline 46 Arranged outside the collecting device 22 and adjacent to the opening 44 is a collecting pipeline 46 which is spaced apart from the opening 44 in such a way that a gap 48 is formed between them.
- FIGS. 8 and 9 illustrate a further embodiment of the device 10 according to the invention.
- the schematically simplified side view according to FIG. 10 illustrates that - seen in the direction of movement X of the workpiece 12 - a rotor head 14 downstream of the collecting device 22 or corresponding rotor head modules 30 (see FIG. 4) are arranged. Furthermore, FIG.
- FIG. 11 which shows a top view of FIG. 10, shows that openings 44 are formed on both side edges 24 of the collecting device 22, with a dividing element in the central section M (cf. FIG. 5) of the collecting device 22 attached in the form of a plow 50, the tip S of which points in the direction of the rotor head 14 or the rotor head modules 30.
- the plow 50 divides the collecting device 22 into two areas 22.1, 22.2. In each case in the shadow of the plow 50 and in alignment with the respective openings on the side edges 24 of the collecting device 22, flushing nozzles 28 are provided, from which a fluid 19, preferably water under pressure, is applied in the direction of the openings 44.
- FIG. 12 shows a further embodiment of the device 10 according to the invention, which illustrates the removal of scale Z on an underside of the workpiece 12.
- At least one head element or rotor head 14 with jet nozzles 16 attached to it is attached below the roller table 40, an elongated separation device 52 being provided upstream of the rotor head 14 and adjacent thereto, as seen in the direction of movement X of the workpiece 12.
- this separation device 52 is always referred to below as a separating plate, without any limitation being understood therein.
- the upper edge 53 of the separating plate 52 adjoins the underside of the workpiece 12 and extends from there essentially vertically downwards. With this arrangement of the separating plate 52, one side thereof faces the rotor head 14.
- the means 42 for receiving or removing scale Z here in the form of a container 43, are also arranged below the roller table 40, namely on the side of the separating plate 52 which faces the rotor head 14.
- the scale particles Z and the water are reflected at different angles from the underside of the workpiece 12 is used to separate scale and water on the underside of the workpiece 12.
- the scale particles Z as illustrated in FIG.
- FIG. 12 For simplification, this is symbolized in FIG. 12 only symbolically by an arrow pointing to the left with the reference symbol “60”.
- a plurality of containers 43 can also be arranged below the roller table 40 and in particular can be moved or moved transversely to the roller table 40, in the same way as for the embodiment of FIG. 6 shown. In this regard, to avoid repetition, reference may be made to the explanations relating to FIG. 6
- the removed scale Z which according to the invention is accommodated in a container 43 in the above-mentioned embodiments, can then be taken to the renewed steel production in a sintering street, taking into account that this collection was carried out essentially oil-free as explained.
- the fill level of a container 43 can be detected by means of a sensor (not shown) in relation to the scale Z removed therein. This fill level information can be sent to the
- Control device 34 are transmitted, with which a movement of the containers 43 below the roller table 40 is then suitably controlled or coordinated. If it is recognized by the said sensor that a container 43 has been completely filled with scale Z, this container 43 is removed from the position at which it is below the deflection plate (see FIG. 6), the gap 48 (see FIG. 8) or the separating plate 52 (see FIG. 12) is positioned, moved away and replaced by an empty container 43.
- the water treatment system 60 comprises a sintering well 62 which is connected to a sintering channel 54 via a line 72. Downstream of the sintering well 62, the system 60 has a so-called longitudinal clarifier 64 and then a filter 66 before the clarified water then reaches a cold water basin 68, to which a cooling tower 70 is assigned. Starting from the cold water basin 68, a further line 72 leads back to the device 10 in order to provide “fresh” water for the descaling which is carried out with the device 10.
- pumps 74 are provided, with which the water is conveyed through the system 60 to the next treatment stage.
- the water treatment system 60 also includes grippers 63, which are each arranged above the sintering well 62 and the longitudinal clarifier 64. By means of these grippers 63, it is possible to lift either scale particles Z or other comparatively coarse dirt from the sintering well 62 or the longitudinal clarifier 64.
- a characteristic feature of the water treatment system 60 is that a return line 73 is provided, which in the device 10 is connected to the collecting pipe 46 (see FIG. 8) and / or to the left area of the separating plate 52 (see FIG. 12) and is either upstream of the Longitudinal clarifier 64 (or downstream of the sintering well 62) and / or upstream of the filter 66 (or downstream of the longitudinal clarifier 64) opens into the line system of the system 60.
- Water which originates from the descaling process and did not get into the sintering channel 54, can be returned or introduced into the system 60 through the return line 73 essentially oil-free either downstream of the sintering well 62 or downstream of the longitudinal clarifier 64 or directly to the cooling tower 70 , so that the sintering well 62 or the longitudinal clarifier 64 is bypassed. It is also advantageous here that this water is already essentially free of scale particles Z, as a result of the separation of removed scale Z and water, as explained with reference to the above embodiments of the invention.
- the above-described separation of scale Z and water after the scale Z has been removed from a surface 20 of the workpiece 12 achieves the advantage that the scale particles Z are directly available for reuse in the sintering street, and others on the one hand, the water fraction, which is preferably supplied to the water treatment system 60 through the return line 73, has a lower load of scale or fat or oil. Relieving the cooling water treatment in this way increases the quality of the treated water, for example in existing systems. In the case of new plants, this makes it possible to dimension the individual separation or processing stages smaller. It is achieved by means of the present invention that scale Z, which has been removed from a surface 20 of the workpiece 12 by the use of a liquid 18, is received separately from the sintering channel 54 by separate containers 43 below the roller table 40. Since this eliminates the need to convey a mixture consisting of scale, water and oil / fat by washing away in the sintering channel 54, as in the prior art According to the invention, a descaling process that saves water and thus energy is realized.
- tip 52 separation device eg divider
- a distance (between the intersection of the axis of rotation R with the end face of the head element 14 and the surface 20 of the workpiece 12)
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019200760.0A DE102019200760A1 (en) | 2019-01-22 | 2019-01-22 | Device and method for descaling a moving workpiece |
PCT/EP2020/050876 WO2020152003A1 (en) | 2019-01-22 | 2020-01-15 | Device and method for descaling a moving workpiece |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3914403A1 true EP3914403A1 (en) | 2021-12-01 |
EP3914403B1 EP3914403B1 (en) | 2022-06-29 |
Family
ID=69172800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20700891.3A Active EP3914403B1 (en) | 2019-01-22 | 2020-01-15 | Device and method for descaling a moving workpiece |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3914403B1 (en) |
DE (1) | DE102019200760A1 (en) |
WO (1) | WO2020152003A1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4115819A1 (en) * | 1991-05-15 | 1992-11-19 | Schloemann Siemag Ag | METHOD FOR TREATMENT OF COOLING AND / OR LUBRICANTS USED IN ROLLING MILLS, AND A TREATMENT SYSTEM FOR THIS |
AUPM826394A0 (en) * | 1994-09-20 | 1994-10-13 | Bhp Steel (Jla) Pty Limited | Descaling metal strip |
DE19817002A1 (en) * | 1998-04-17 | 1999-10-21 | Schloemann Siemag Ag | Apparatus for descaling of semifinished products e.g. metal strips and sheets |
EP1718424B1 (en) | 2004-02-27 | 2007-08-01 | Hermetik Hydraulik AB | Hydraulic device which is used to descale warm rolling products |
DE102005014877A1 (en) | 2005-03-30 | 2006-10-05 | Sms Demag Ag | Method and device for descaling surfaces of slabs, strips or the like |
KR101353693B1 (en) * | 2011-12-08 | 2014-01-20 | 주식회사 포스코 | Apparatus for treating surface of hot rolled strip |
DE102016217562A1 (en) | 2016-03-18 | 2017-09-21 | Sms Group Gmbh | Apparatus and method for descaling a moving workpiece |
DE102016223131A1 (en) * | 2016-09-06 | 2018-03-08 | Sms Group Gmbh | Apparatus and method for applying a liquid medium to a roll and / or to a rolling stock and / or for removing the liquid medium |
-
2019
- 2019-01-22 DE DE102019200760.0A patent/DE102019200760A1/en not_active Withdrawn
-
2020
- 2020-01-15 EP EP20700891.3A patent/EP3914403B1/en active Active
- 2020-01-15 WO PCT/EP2020/050876 patent/WO2020152003A1/en active Search and Examination
Also Published As
Publication number | Publication date |
---|---|
DE102019200760A1 (en) | 2020-07-23 |
WO2020152003A1 (en) | 2020-07-30 |
EP3914403B1 (en) | 2022-06-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3429770B1 (en) | Device and method for descaling a workpiece in motion | |
DE2901896A1 (en) | PROCESS AND DEVICE FOR DESCALING METALLIC RIBBONS OR THE SAME, IN PARTICULAR MADE OF STEEL | |
EP3530364B1 (en) | High-pressure cleaning device for endless material | |
EP1077095B1 (en) | Descaling device for a continuously cast metal strip | |
DE102015115857A1 (en) | Cleaning device for glue nozzles and cleaning methods | |
EP1900449B1 (en) | Spray header of a hydraulic descaling facility and method for operating such a spray header | |
WO2018046295A1 (en) | Device and method for applying a liquid medium to a roll and/or to a rolled material and/or for removing the liquid medium | |
EP3184182B1 (en) | Device and method for cleaning a body having a surface layer to be removed | |
EP3914403B1 (en) | Device and method for descaling a moving workpiece | |
EP3122481B1 (en) | Apparatus for the application and suction-extraction of operating fluids in the inlet of cold rolling installations | |
EP1802406B2 (en) | Method and apparatus for cleaning rolls | |
EP1967296B1 (en) | Device for cleaning crates and base for this purpose | |
DE19817002A1 (en) | Apparatus for descaling of semifinished products e.g. metal strips and sheets | |
EP4214010A1 (en) | Method and spraying apparatus for thermal surface treatment of a metal product | |
AT506149B1 (en) | CONVEYING DEVICE FOR SMALL PARTS | |
DE4334673C1 (en) | Method and apparatus for recovering cutting compound in abrasive water-jet cutting | |
DE102004060825A1 (en) | Method and device for descaling surfaces | |
DE69811403T2 (en) | METHOD AND DEVICE FOR ABRASIVE SURFACE PROCESSING OF STONE MATERIALS | |
EP3525949B1 (en) | Device and method for descaling a slab | |
WO2011003664A1 (en) | Device for removing residues from the surface of a moving strip, and strip processing system | |
DE2611847A1 (en) | METHOD AND DEVICE FOR DEFLECTING A FLOW OF SPREADABLE PARTICLES | |
DE19707031C2 (en) | Device for applying a protective liquid to glass | |
WO2013076187A1 (en) | Method and device for cleaning a surface of a steel product | |
DE2919033A1 (en) | Descaling of workpieces, esp. round ingots or billets before forging - where hot rotating workpiece is exposed to jets of liq. in sound-proof chamber | |
DD235153A3 (en) | DESCENTING DEVICE FOR STABOBILITY, ROUND HOLLOWING BODY |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
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 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20210823 |
|
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 |
|
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 |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
INTG | Intention to grant announced |
Effective date: 20220201 |
|
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: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1500968 Country of ref document: AT Kind code of ref document: T Effective date: 20220715 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502020001305 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20220629 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: 20220929 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: 20220629 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: 20220629 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: 20220930 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: 20220629 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: 20220929 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20220629 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20220629 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: 20220629 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20220629 |
|
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: 20220629 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: 20220629 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: 20220629 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: 20221031 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: 20220629 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: 20220629 |
|
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: 20220629 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: 20221029 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502020001305 Country of ref document: DE |
|
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: 20220629 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20220629 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: 20220629 |
|
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: 20230330 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230707 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
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: 20230115 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20230131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230131 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230131 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230115 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20240119 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20240129 Year of fee payment: 5 |
|
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: 20220629 |