EP3429773B1 - Dispositif et procédé de décalaminage d'une pièce déplacée - Google Patents

Dispositif et procédé de décalaminage d'une pièce déplacée Download PDF

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Publication number
EP3429773B1
EP3429773B1 EP17712093.8A EP17712093A EP3429773B1 EP 3429773 B1 EP3429773 B1 EP 3429773B1 EP 17712093 A EP17712093 A EP 17712093A EP 3429773 B1 EP3429773 B1 EP 3429773B1
Authority
EP
European Patent Office
Prior art keywords
workpiece
rotor head
rotation
axis
liquid
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
EP17712093.8A
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German (de)
English (en)
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EP3429773A1 (fr
Inventor
Angela ANTE
Wolfgang Fuchs
Jens MARBURGER
Jan Schröder
Michael Jarchau
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SMS Group GmbH
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SMS Group GmbH
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Publication of EP3429773A1 publication Critical patent/EP3429773A1/fr
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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
    • B21B45/08—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
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0463—Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length
    • B05B13/0484—Installation or apparatus for applying liquid or other fluent material to moving work of indefinite length with spray heads having a circular motion, e.g. being attached to a rotating supporting element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/30—Arrangements for collecting, re-using or eliminating excess spraying material comprising enclosures close to, or in contact with, the object to be sprayed and surrounding or confining the discharged spray or jet but not the object to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/022—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements the rotating deflecting element being a ventilator or a fan
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/022—Cleaning travelling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0421—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with rotating spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0264—Splash guards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B2038/004—Measuring scale thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/06—Product speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product

Definitions

  • the invention relates to a device and a method for descaling a workpiece that 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, with which a rolling stock which 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, with each nozzle head being driven in rotation by a motor about an axis of rotation perpendicular to the rolling stock surface.
  • at least two nozzles which are arranged eccentrically with respect to the axis of rotation are provided in each nozzle head and are arranged on the circumference of the nozzle head as close as possible in terms of construction.
  • 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 permanent temperature streaks can occur.
  • the nozzles on the respective nozzle heads are arranged inclined outwards by an angle of attack. As a result, the direction of spraying of these nozzles is also aligned in the direction of the feed of the rolling stock when the nozzle heads are rotated about their axis of rotation.
  • Such an 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.
  • a method for descaling rolling stock in which a rotor descaling device is provided, by means of which a liquid jet is sprayed onto a surface of the rolling stock to be descaled.
  • the liquid jet is formed intermittently, that is to say temporarily. Due to the interruption of the liquid jet one or more times, pressure peaks occur, which have the effect of increasing the jet pressure, thereby improving the descaling effect for the rolling stock.
  • a control disk provided for this purpose which is provided in fluid connection with a pressure medium supply line, disadvantageously increases the design effort for this descaling technique. Furthermore, there is a risk in the formation of the pressure peaks that this leads to increased material stress, in particular due to cavitation.
  • a device and a method for descaling a workpiece which are moved relative to the device in a direction of movement.
  • several blasting nozzles are provided on a rotating rotor head in the form of a nozzle holder, liquid being sprayed or sprayed under high pressure from the blasting 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 blasting nozzles always runs at an angle to the direction of movement of the rolling stock.
  • This oblique alignment of the direction of radiation ensures that removed scale is transported away from the surface of the rolling stock to the side away from the rolling stock.
  • this is accompanied by a disadvantageous heavy contamination of the system or its surrounding area.
  • the invention has for its object to optimize the descaling of a workpiece with simple means.
  • a device is used for descaling a workpiece, preferably a hot rolling stock, which is moved in a direction of movement relative to the device, and comprises at least one rotor head which can be rotated about an axis of rotation and to which a plurality of jet nozzles are attached, a liquid, in particular water, from the jet nozzles. can be applied to the workpiece at an angle of attack at an angle to the surface of the workpiece.
  • the device comprises a control device, which is connected to drive means of the rotor head in terms of signals and is programmed in such a way that the speed at which the rotor head is rotated about its axis of rotation is adapted to a feed rate at which the workpiece is moved in its direction of movement can be.
  • control device preferably comprises a control loop in order to implement the aforementioned adaptation of the rotational speed of the rotor head to the feed speed of the workpiece.
  • the feed speed of the workpiece can also be adapted to the speed of the rotor head.
  • the majority of the jet nozzles are attached to the rotor head at a different radial distance from its axis of rotation, with a larger volume flow of liquid from a jet nozzle which has a greater radial distance from the axis of rotation can be applied than in comparison to a jet nozzle that has a smaller radial distance from the axis of rotation.
  • the invention also provides a method for descaling a workpiece, preferably a hot rolled product.
  • the workpiece is moved relative to a device in one direction of movement, this device having at least one rotor head rotatable about an axis of rotation, to which a plurality of jet nozzles are attached.
  • a liquid in particular water, is applied or sprayed from the jet nozzles onto the workpiece at an angle of incidence at an angle to the surface of the workpiece.
  • the speed at which the at least one rotor head is rotated about its axis of rotation is adapted by means of a control device to a feed rate at which the workpiece is moved in its direction of movement.
  • This adaptation of the speed of the rotor head to the feed speed of the workpiece is preferably regulated, i.e. by using an appropriate control loop with which the control device is equipped.
  • the feed speed of the workpiece can also be adapted mutatis mutandis to the speed of the rotor head.
  • volume flows of liquid of different sizes are sprayed out of a plurality of jet nozzles, which are each attached to the rotor head at a different radial distance from its axis of rotation, with one jet nozzle having a larger radial one Has a distance from the axis of rotation, a larger volume flow of liquid is injected than in comparison to a jet nozzle, which has a smaller radial distance from the axis of rotation.
  • the invention is based on the essential finding that an optimization and homogenization of the specific energy input on the surface of the Workpiece, namely through the liquid sprayed thereon under high pressure, along, ie in the direction of movement of the workpiece, by adapting the speed of the rotor head to the feed speed of the workpiece.
  • a further optimization of the specific energy input is achieved for the liquid sprayed at high pressure onto the surface of the workpiece in that a plurality of jet nozzles are attached to the rotor head at a different radial distance from its axis of rotation, with one jet nozzle having a larger one has a radial distance from the axis of rotation, then a larger volume flow of liquid is applied than in comparison to a jet nozzle, which has a smaller radial distance from the axis of rotation.
  • This can be achieved in a simple manner by selecting a suitable type of nozzle, so that from a jet nozzle which is arranged radially further away from the axis of rotation of the rotor head, a correspondingly larger amount of liquid, i.e.
  • Such a configuration of a plurality of jet nozzles on the rotor head accordingly reduces the energy input for the liquid transversely to the direction of movement of the workpiece, ie. H. across its width, optimized.
  • the specific energy input is determined according to the present invention from the impact pressure with which the liquid impinges on a surface of the workpiece and the specific volume flow per width of the workpiece, ie the volume flow of the liquid sprayed onto the workpiece divided by the spray width in relation to the direction of movement of the workpiece.
  • the impact pressure depends on the pressure at which the liquid is supplied to the jet nozzles, the volume flow sprayed out, and the distance of the jet nozzles from the surface of the workpiece.
  • the specific energy input depends on the feed rate with which the workpiece is moved in its direction of movement. A change the specific energy input, depending on the signals of the surface inspection device, can be made by adapting the parameters mentioned above, namely by means of the control device, as will be explained in detail below.
  • an arrangement of rotor heads and a jet nozzle arrangement can be provided, which are arranged one behind the other and in particular adjacent to one another with respect to the direction of movement of the workpiece.
  • the present invention is either a pair of rotor heads in which a rotor head is provided above and below a workpiece, ie on the top and bottom thereof, or a pair of rotor modules in which - above and below the workpiece - a plurality of rotor heads are combined side by side and transverse to the direction of movement of the workpiece.
  • a surface inspection device connected to the control device for signaling purposes can be provided, which is arranged downstream of the rotor head in relation to the direction of movement of the workpiece and close to it in order to be able to detect any remaining scale on the surface of the workpiece.
  • the descaling quality of the workpiece is compared with a predetermined target specification by means of the control device and then, depending on this, a high-pressure pump unit, which is in fluid communication with the jet nozzles of the rotor head, is appropriately controlled or regulated.
  • a high-pressure pump unit which is in fluid communication with the jet nozzles of the rotor head, can be controlled in such a way that a pressure with which liquid is sprayed out of the jet nozzles onto the surface of the workpiece is set as a function of the signals from the surface inspection device. This means that the pressure for the liquid to be sprayed out is set just high enough to achieve an adequate descaling quality for the workpiece. If - as seen in the direction of movement of the workpiece - at least two jet nozzle arrangements are arranged one behind the other, it can be achieved by said control that a switchable jet nozzle arrangement is switched on appropriately depending on the signals of the surface inspection device, which corresponds to the special operation mentioned according to the invention . In comparison to a conventional two-row arrangement of rotor heads or spray bars, such a single-row arrangement ie a single rotor head or jet nozzle arrangement, which is used in normal operation, achieves a substantial saving in operating media.
  • the amount of water required for a clean descaling of the workpiece can be suitably minimized by varying the pressure and / or the volume flow. This leads to a saving in energy for the provision of high-pressure water, and in the same way to a reduced cooling of the workpiece as a result of a reduced amount of liquid which is sprayed onto the workpiece.
  • the distance between the rotor head and the surface of the workpiece can be adjusted. This allows adaptation to different batches of workpieces with different heights.
  • this distance between the rotor head and the surface of the workpiece is also possible to set this distance between the rotor head and the surface of the workpiece as a function of the signals from the surface inspection device. For example, it can be provided in this way that, if the descaling quality is insufficient, the distance between the rotor head and the surface of the workpiece is reduced, so that this results in a greater impact pressure on the surface of the workpiece with respect to the liquid sprayed thereon. This also applies mutatis mutandis the other way round, according to which the distance between the rotor head and the surface of the workpiece can be increased at least slightly if the descaling quality exceeds the predetermined target value.
  • the pressure at which the liquid is applied to a rotor head arrangement which is arranged below the workpiece can be selected to be greater than that for a rotor head arrangement which is arranged above the workpiece.
  • the heating energy required for an oven and / or for induction heating, or the forming energy required for subsequent rolling of the workpiece can be considerably reduced. Due to the temperature saving, thinner final thicknesses can be generated for a workpiece or a hot rolled product, so that the product mix can be enlarged. In addition, the lifespan of oven rollers increases considerably at a lower oven temperature.
  • a device 10 according to the invention serves for descaling a workpiece 12 which is moved in a direction of movement X relative to the device 10.
  • the workpiece can be hot rolled material that is moved past the device 10.
  • a device 10 according to the invention has a jet nozzle arrangement with a plurality of jet nozzles, from which a liquid, in particular water, is sprayed onto a surface of a workpiece under high pressure.
  • the jet nozzle arrangement is made up of a rotor head 14 ( Fig. 1 ) educated. Rotation of the rotor head 14 about its axis of rotation R is carried out by drive means which in Fig. 1 symbolically by an "M" are designated and can be formed, for example, from an electric motor. Blasting nozzles 16 are attached to an end face of the rotor head 14 which faces the workpiece 12.
  • a liquid 18 (in Fig. 1 simply symbolized with dashed lines) sprayed under high pressure onto a surface 20 of the workpiece 12 in order to descale the workpiece 12 in a suitable manner.
  • the jet nozzles 16 are in the embodiment of FIG Fig. 1 firmly attached to the rotor head 14.
  • 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, in which the liquid is sprayed from the jet nozzles 16 also runs parallel to the axis of rotation R of the rotor head.
  • the axis of rotation R is arranged inclined at an angle ⁇ with respect to an orthogonal to the surface 20 of the workpiece. This results in an angle of attack ⁇ for the jet nozzles 16, with which the liquid 18 sprayed from the jet nozzles 16 hits the surface 20 of the workpiece 12.
  • the angle of attack a is equal to the angle of inclination ⁇ of the axis of rotation R, the angle of attack a remaining constant during a rotation of the rotor head 14 about its axis of rotation R.
  • This embodiment supports the function of the invention in a particularly advantageous manner, but other designs of rotor head jet nozzle arrangements can also be used.
  • the rotor head 14 is designed to be height-adjustable, for example by attachment to a height-adjustable holder, which in the Fig. 1 simplified symbolized by the double arrow "H".
  • the holder H can have an actuator (not shown in the drawing).
  • 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, can be adjusted, if necessary, by actuating the actuator.
  • this distance A is 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.
  • the device 10 comprises a control device 22 and a high-pressure pump unit 24, which is connected to the control device 22 for signaling purposes.
  • the rotor head 14 is connected to the high-pressure pump unit 24 via a connecting line such that the jet nozzles 16 are in fluid communication with the high-pressure pump unit 24 and are therefore supplied with a liquid under high pressure by the high-pressure pump unit 24.
  • the liquid 18, which is then sprayed under high pressure from the jet nozzles 16 onto the workpiece 12, is preferably water, without any restriction being limited to the medium water.
  • At least one pump of the high-pressure pump unit 24 is equipped with a frequency controller 25. This makes it possible to control the high-pressure pump unit 24 as continuously as possible by means of the control device 22 in order to be able to change the pressure with which the liquid 18 is supplied to the jet nozzles 16 even in small steps. Further details for such a control of the high-pressure pump unit 24 are explained in detail below.
  • the device 10 comprises a surface inspection device 26, which - in relation to the direction of movement X of the workpiece 12 - is arranged downstream of the rotor head 14 and close to it.
  • the surface inspection device 26 can be based on an optical measuring principle in which a 3D measurement is carried out for a surface 20 of the workpiece 12 and a height profile for the surface 20 of the workpiece 12 is derived from this. Alternatively, a spectral analysis is carried out on the surface 20 of the workpiece 12 by means of the surface inspection device 26.
  • the surface inspection device 26 is connected to the control device 22 in terms of signal technology.
  • the surface inspection device 26 corresponds to a scale detection device.
  • the surface inspection device 26 is designed such that both an upper side and an underside of the workpiece 12 are monitored.
  • the drive means M of the rotor head 14 are connected to the control device 22 in terms of signals. This makes it possible to set the speed of rotation of the rotor head 14 about its axis of rotation 14. In the same way, means (not shown) with which the feed speed v of the workpiece 12 can be set or changed, and the height-adjustable holder H are each signal-technically connected to the control device 22, as will be explained in detail below.
  • Fig. 2 shows a further embodiment of the device 10 according to the invention, namely in a simplified plan view.
  • an arrangement 14.1 of rotor heads and a jet nozzle arrangement 14.2 are arranged one behind the other with respect to the direction of movement X of the workpiece 12.
  • the jet nozzle arrangement 14.2 can be designed in the form of an arrangement of rotor heads, these arrangements 14.1, 14.2 of rotor heads being referred to as “rotor head arrangements” for short.
  • the rotor heads of the two rotor head arrangements 14.1 and 14.2 are each connected to the high-pressure pump unit 24, as with reference to FIG Fig. 1 explained.
  • the surface inspection device 26 is positioned downstream of the rotor head arrangement 14.2.
  • a width of the workpiece 12 extends in the direction y, the axes of rotation R for the rotor head arrangements 14.1 and 14.2 each running perpendicular to the plane of the drawing.
  • Other embodiments, for example as a spray bar, can also be used for the jet nozzle arrangement 14.2 positioned downstream.
  • the signaling connections between on the one hand the control device 22 and on the other hand individual components of the device 10 are shown in Fig. 1 and Fig. 2 each symbolically indicated by dotted lines.
  • the signal connection between the control device 22 and the high-pressure pump unit 24 is designated by the reference symbol 23.1.
  • the signal connection between the control device 22 and the surface inspection device 26 is designated by the reference symbol 23.2.
  • the signal connection between the control device 22 and drive means M of the rotor head 14 is designated by the reference symbol 23.3.
  • the signal connection between the control device 22 and the height adjustment H is designated by the reference symbol 23.4.
  • the signal connection between the control device 22 and a device (not shown), by means of which the feed speed v of the workpiece 12 can be set or changed, is designated by the reference symbol 23.5.
  • These connections 23.1-23.5 can either be physical lines or a suitable radio link or the like.
  • the Fig. 3 illustrates a relationship between the spray direction S, with which the liquid 18 is sprayed out of the jet nozzles 16, and the direction of movement X, with which the workpiece 12 is moved past the device 10 or its rotor head 14.
  • This is clarified in detail Fig. 3 a projection of the spray direction S into a plane parallel to the surface 20 of the workpiece 12.
  • the spray direction S, with which the liquid 18 is discharged from a nozzle mouth 17 of a jet nozzle 16 is oriented in the opposite direction to the movement direction X, ie at a spray angle ⁇ of approximately 170 ° -190 ° to the movement direction X.
  • a particularly good effect of the invention results from the fact that the above-described orientation of the spray direction S, as shown in the diagrams 3a, 3b and 3c , remains unchanged or constant during a rotation of the rotor head 14 about its axis of rotation R. The same applies to the angle of attack a.
  • Fig. 4 shows a frontal view of rotor modules, wherein a rotor module 30.1 is provided above and a rotor module 30.2 below the workpiece 12, thereby forming a pair of rotor modules 32.
  • the rotor modules 30.1 and 30.2 each consist of a plurality of rotor heads 14 which are arranged side by side and transversely (ie in the Fig. 4 in the direction of the y-axis) to the direction of movement X of the workpiece.
  • the distance between the individual rotors must be determined in such a way that the spray marks of the outer jet nozzles overlap in the spray pattern; however, the jet of two such nozzles does not strike the same point on the workpiece at the same time.
  • fewer or more than three rotor heads 14 can also be combined to form a rotor module 30.1, 30.2.
  • Fig. 5 symbolizes an attachment of several jet nozzles 16 on a lower end face of a rotor head 14.
  • three jet nozzles 16.1, 16.2 and 16.3 are provided, each having a different distance s from the axis of rotation R of the rotor head 14.
  • the axis of rotation R runs perpendicular to the plane of the drawing.
  • V ⁇ 1 > V ⁇ 2 > V ⁇ 3 the volume flow V ⁇ 1 is discharged from the jet nozzle 16.1, the volume flow V ⁇ 2 from the jet nozzle 16.2, and the volume flow V ⁇ 3 from the jet nozzle 16.3.
  • a uniform energy input is achieved on the surface 20 of the workpiece 12 transverse to its direction of movement X for the liquid discharged from the jet nozzles 16.1, 16.2 and 16.3.
  • the workpiece 12 is moved past the device 10, namely at a feed rate which is symbolized in the respective figures with "v".
  • E I. ⁇ V ⁇ spec V
  • the impact pressure with which the liquid 18 impinges on the surface 20 of the workpiece 12 is dependent both on the pressure and the volume with which the liquid is sprayed out of the jet nozzles 16 and on the distance the jet nozzles 16 from the surface 20 of the workpiece.
  • V ⁇ spec V ⁇ b
  • the invention now works as follows: For a desired descaling of the surfaces 20 of the workpiece 12, it is moved in the direction of movement X relative to the device 10 according to the invention. In this case, the liquid 18 is sprayed from the jet nozzles 16 under high pressure onto the surfaces 20 of the workpiece 12, namely both on its upper side and on its lower side.
  • Fig. 6 shows a flowchart to illustrate an operating mode of the device 10 according to the invention or an implementation of a method according to the invention.
  • the descaling quality is continuously monitored by means of the surface inspection device 26. As a result, it can be ascertained close to the location and / or immediately adjacent to a jet nozzle arrangement whether the desired surface quality for the workpiece 12 reaches a predetermined desired value. If this is not the case, various actuators are available for adaptation in order to achieve the desired surface quality with the lowest possible specific energy input or, if the quality is achieved, the specific one Reduce energy input successively in order to achieve an acceptable quality at the lowest possible energy input.
  • the pressure with which the liquid 18 is supplied to the jet nozzles 16 can be increased by a suitable control of the high-pressure pump unit 24 or of the frequency controller (s) 25 provided for this purpose by means of the control device 22, with a further pump of the high-pressure pump unit possibly also 24 is switched on.
  • the operating parameters of the device 10 can also be adapted: by a suitable one Activation of the high-pressure pump unit 24 by means of the control device 22 can reduce the pressure with which the liquid 18 is supplied to the jet nozzles 16 until recognizable residual scale indicates that a minimum specific energy input has been undershot and then this pressure has to be increased again slightly.
  • the pressure for the liquid 18 supplied to the jet nozzles 16 is set to a sufficiently large value with which the surface quality reaches the predetermined desired value. In other words, the pressure with which the liquid 18 is supplied to the jet nozzles 16 is reduced as long as the surface or descaling quality of the workpiece 12 maintains a predetermined target value.
  • the impact pressure or the descaling pressure can be changed by adjusting the height of the rotor head arrangement.
  • This height adjustment is in the Fig. 1 symbolized by the arrow "H", and is achieved by the control device 22 suitably controlling the actuator of the height-adjustable holder H to which the jet nozzle arrangement is attached.
  • the flow chart according to Fig. 6 illustrates a control loop in order to determine or set the desired specific energy input E with which the workpiece 12 is descaled.
  • the abovementioned possibilities are carried out or applied until the surface quality for the workpiece reaches a predetermined target value (in Fig. 6 referred to as the "target result").
  • Means are provided by which the control device 22 receives information regarding the current feed speed v of the workpiece 12 in its direction of movement X. The same applies in the event that the feed rate v has been adjusted or changed, which is then also signaled to the control device 22 by the means mentioned. Based on this, the control device 22 can be used to select a desired one Rotation speed for a rotor head 14 can be set, namely in adaptation to the feed rate of the workpiece 12. Such an adjustment is also possible in ongoing production operation if there are fluctuations in the feed rate v for the workpiece 12 or this feed rate as a necessary actuator for adjusting the Descaling quality is changed. In terms of programming, the control device 22 can be set up in such a way that the speed of rotation of a rotor head 14 is also adjusted in a controlled manner.
  • the feed speed v with which the workpiece is moved in its direction of movement X can also be controlled, preferably adjusted, for example as a function of the determined surface or descaling quality of the workpiece 12 and / or according to the control device 22 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Spray Control Apparatus (AREA)

Claims (17)

  1. Dispositif (10) destiné au décalaminage d'une pièce à usiner (12), de préférence d'un produit de laminage à chaud, qui est mise en mouvement par rapport au dispositif (10) dans une direction de déplacement (X), comprenant :
    aù moins une tête de rotor (14) qui est apte à effectuer des rotations autour d'un axe de rotation (R), contre laquelle sont disposées plusieurs buses d'éjection (16 ; 16.1, 16.2, 16.3) ; dans lequel, à partir des buses d'éjection (16 ; 16.1, 16.2, 16.3), un liquide (18), en particulier de l'eau, peut venir s'appliquer sur la pièce à usiner (12) en formant un angle de placement (a) en inclinaison par rapport à une orthogonale sur une surface (20) de la pièce à usiner (12) ; et
    un mécanisme de commande (22) ;
    caractérisé
    en ce que le mécanisme de commande (22) est relié par l'intermédiaire de signaux à des moyens d'entraînement (M) de la tête de rotor (14) et est conçu, du point de vue de la technique de programmation, d'une manière telle que la vitesse de rotation avec laquelle la tête de rotor (14) est mise en rotation autour de l'axe de rotation (R) de la tête en question peut être adaptée à une vitesse d'avance avec laquelle la pièce à usiner (12) est mise en mouvement dans sa direction de déplacement ; de préférence, en ce que le mécanisme de commande (22) comprend un circuit de réglage, tant et si bien que l'adaptation de la vitesse de rotation de la tête de rotor (14) à la vitesse d'avance de la pièce à usiner (12) a lieu de manière réglée.
  2. Dispositif (10) selon la revendication 1, caractérisé en ce que la multitude des buses d'éjection (16; 16.1, 16.2, 16.3) sont appliquées contre la tête de rotor (14) à une distance radiale de grandeur différente (s1; s2; s3) par rapport à son axe de rotation (R) ; dans lequel, à partir d'une buse d'éjection (16; 16.1, 16.2, 16.3), qui présente une distance radiale supérieure par rapport à l'axe de rotation (R), un plus grand courant volumique (V̇ 1 ; V̇ 2 ; V̇ 3) de liquide (18) peut être appliqué par rapport à celui d'une buse d'éjection qui présente une distance radiale inférieure par rapport à l'axe de rotation (R).
  3. Dispositif (10) destiné au décalaminage d'une pièce à usiner (12), de préférence d'un produit de laminage à chaud, qui est mise en mouvement par rapport au dispositif (10) dans une direction de déplacement (X), comprenant :
    au moins une tête de rotor (14) qui est apte à effectuer des rotations autour d'un axe de rotation (R), contre laquelle sont disposées plusieurs buses d'éjection (16 ; 16.1, 16.2, 16.3) ; dans lequel, à partir des buses d'éjection (16; 16.1, 16.2, 16.3), un liquide (18), en particulier de l'eau, peut venir s'appliquer sur la pièce à usiner (12) en formant un angle de placement (a) en inclinaison par rapport à une orthogonale sur une surface (20) de la pièce à usiner (12) ; et
    un mécanisme de commande (22) ;
    caractérisé
    en ce que la multitude des buses d'éjection (16 ; 16.1, 16.2, 16.3) sont appliquées contre la tête de rotor (14) à une distance radiale de grandeur différente (s1; s2 ; s3) par rapport à l'axe de rotation (R) de la tête en question ; dans lequel, à partir d'une buse d'éjection (16; 16.1, 16.2, 16.3), qui présente une distance radiale supérieure par rapport à l'axe de rotation (R), un plus grand courant volumique (V̇ 1 ; V̇ 2 ; V̇ 3) de liquide (18) peut être appliqué par comparaison à celui d'une buse d'éjection qui présente une distance radiale inférieure par rapport à l'axe de rotation (R).
  4. Dispositif (10) selon la revendication 3, caractérisé en ce que le mécanisme de commande (22) est relié par l'intermédiaire de signaux à des moyens d'entraînement (M) de la tête de rotor (14) et est conçu, du point de vue de la technique de programmation, d'une manière telle que la vitesse de rotation avec laquelle la tête de rotor (14) est mise en rotation autour de son axe de rotation (R) peut être adaptée à une vitesse d'avance avec laquelle la pièce à usiner (12) est mise en mouvement dans sa direction de déplacement ; de préférence, en ce que le mécanisme de commande (22) comprend un circuit de réglage, tant et si bien que l'adaptation de la vitesse de rotation de la tête de rotor (14) à la vitesse d'avance de la pièce à usiner (12) a lieu de manière réglée.
  5. Dispositif (10) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une vitesse d'avance (v) de la pièce à usiner (12) peut être établie de manière commandée, de préférence de manière réglée, au moyen du mécanisme de commande (22).
  6. Procédé destiné au décalaminage d'une pièce à usiner (12), de préférence d'un produit de laminage à chaud, qui est mise en mouvement dans une direction de déplacement (X), par rapport à un dispositif (10), comprenant au moins une tête de rotor (14) qui est apte à effectuer des rotations autour d'un axe de rotation (R), contre laquelle sont disposées plusieurs buses d'éjection (16; 16.1, 16.2, 16.3) ; dans lequel un liquide (18), en particulier de l'eau, est évacué, à partir des buses d'éjection (16 ; 16.1, 16.2, 16.3), tandis que la tête de rotor (14) est mis en rotation autour de son axe de rotation (R), afin de venir s'appliquer sur la pièce à usiner (12) en formant un angle de placement (a) en inclinaison par rapport à la surface (20) de la pièce à usiner (12) ;
    caractérisé
    en ce que la vitesse de rotation, avec laquelle ladite au moins une tête de rotor (14) est mise en rotation autour de son axe de rotation (R), est adaptée, au moyen du mécanisme de commande (22), à une vitesse d'avance avec laquelle la pièce à usiner (12) est mise en mouvement dans sa direction de déplacement (X) ; de préférence, en ce que l'adaptation de la vitesse de rotation de la tête de rotor (14) à la vitesse d'avance de la pièce à usiner (12) a lieu de manière réglée.
  7. Procédé selon la revendication 6, caractérisé en ce que, à partir d'une multitude de buses d'éjection (16; 16.1, 16.2, 16.3), qui sont appliquées contre la tête de rotor (14), respectivement à une distance radiale de grandeur différente (s1 ; s2 ; s3) par rapport à l'axe de rotation (R) de la tête en question, sont éjectés des courants volumiques de liquide (18) de différentes grandeurs (V̇ 1 ; V̇ 2 ; V̇ 3) ; dans lequel, à partir d'une buse d'éjection (16; 16.1, 16.2, 16.3), qui présente une distance radiale supérieure par rapport à l'axe de rotation (R), un courant volumique supérieur (V̇ 1 ; V̇ 2 ; V̇ 3) de liquide (18) est éjecté par comparaison à celui d'une buse d'éjection qui présente une distance radiale inférieure par rapport à l'axe de rotation (R).
  8. Procédé destiné au décalaminage d'une pièce à usiner (12), de préférence d'un produit de laminage à chaud, qui est mise en mouvement dans une direction de déplacement (X), par rapport à un dispositif (10), comprenant au moins une tête de rotor (14) qui est apte à effectuer des rotations autour d'un axe de rotation (R), contre laquelle viennent s'appliquer plusieurs buses d'éjection (16) ; dans lequel un liquide (18), en particulier de l'eau, est éjecté à partir des buses d'éjection (16), tandis que la tête de rotor (14) est mis en rotation autour de son axe de rotation (R), afin de venir s'appliquer sur la pièce à usiner (12) en formant un angle de placement (a) en inclinaison par rapport à la surface (20) de la pièce à usiner (12) ;
    caractérisé
    en ce que, à partir d'une multitude de buses d'éjection (16 ; 16.1, 16.2, 16.3), qui sont appliquées contre la tête de rotor (14) respectivement à une distance radiale de grandeur différente (s1; s2 ; s3) par rapport à l'axe de rotation (R) de la tête en question, sont éjectés des courants volumiques de liquide (18) de différentes grandeurs; dans lequel, à partir d'une buse d'éjection (16.1 ; 16.2 ; 16.3), qui présente une distance radiale supérieure par rapport à l'axe de rotation (R), un plus grand courant volumique (V̇ 1 ; V̇ 2 ; V̇ 3) de liquide (18) est éjecté par comparaison à celui d'une buse d'éjection qui présente une distance radiale inférieure par rapport à l'axe de rotation (R).
  9. Procédé selon la revendication 8, caractérisé en ce que la vitesse de rotation avec laquelle ladite au moins une tête de rotor (14) est mise en rotation autour de son axe de rotation (R) est adaptée, au moyen d'un mécanisme de commande (22), à une vitesse d'avance avec laquelle la pièce à usiner (12) est mise en mouvement dans sa direction de déplacement (X) ; de préférence, en ce que l'adaptation de la vitesse de rotation de la tête de rotor (14) à la vitesse d'avance de la pièce à usiner (12) a lieu de manière réglée.
  10. Procédé selon l'une quelconque des revendications 6 à 9, caractérisé en ce que, lors de la rotation de la tête de rotor (14) autour de son axe de rotation (R), la direction d'éjection (S) du liquide (18) qui s'évacue à partir des buses d'éjection (16 ; 16.1, 16.2, 16.3), par rapport à une projection dans un plan parallèle à la surface (20) de la pièce à usiner (12), est opposée en permanence, c'est-à-dire reste dans une orientation dans laquelle elle forme un angle d'éjection (β) entre 170° et 190°, et en particulier en formant un angle d'éjection (β) de précisément 180°, par rapport à la direction de déplacement (X) de la pièce à usiner (12).
  11. Procédé selon l'une quelconque des revendications 6 à 10, caractérisé en ce que l'on prévoit un agencement de tête de rotor (14.1) et un agencement de buses d'éjection (14.2) qui sont disposés, par rapport à la direction de déplacement (X) de la pièce à usiner (12), l'un derrière l'autre et en particulier en position réciproquement limitrophe ; dans lequel, dans un fonctionnement normal, du liquide (18) est évacué uniquement à partir de la buse d'éjection (16) de l'agencement de tête de rotor (14.1) qui vient s'appliquer sur la pièce à usiner (12) ; dans lequel, dans un fonctionnement spécial, les buses d'éjection (16) de l'agencement de buses d'éjection (14.2) sont mises en circuit, d'une manière telle que du liquide (18) est évacué également à partir des buses d'éjection (16) de l'agencement de buses d'éjection (14.2) afin de venir s'appliquer sur la pièce à usiner (12) et que, par conséquent, à des fins de décalaminage de la pièce à usiner (12), on met en oeuvre aussi bien l'agencement de tête de rotor (14.1) que l'agencement de buses d'éjection (14.2).
  12. Procédé selon l'une quelconque des revendications 6 à 11, caractérisé en ce que l'on prévoit, un mécanisme d'inspection de la surface (26) disposé, par rapport à la direction de déplacement (X) de la pièce à usiner (12), en aval de la tête de rotor (14), qui est relié par l'intermédiaire de signaux au mécanisme de commande (22) ; dans lequel on détecte, avec le mécanisme d'inspection de la surface (26) de la calamine qui subsiste sur la surface (20) de la pièce à usiner (12) ; dans lequel le mécanisme de commande (22) est conçu, du point de vue de la technique de programmation, d'une manière telle que sur la base des signaux du mécanisme d'inspection de la surface (26), on compare la qualité de décalaminage de la pièce à usiner (12) à une valeur de consigne prédéfinie et, en fonction du résultat de ladite comparaison, on commande, de préférence on règle une unité de pompage sous haute pression (24), qui est mise en relation par fluide avec les buses d'éjection (16 ; 16.1, 16.2, 16.3) de la tête de rotor (14).
  13. Procédé selon la revendication 11 ou 12, caractérisé en ce que l'on fait fonctionner les buses d'éjection (16) de l'agencement de buses d'éjection (14.2) qui peut être mis en circuit, en fonction des signaux d'un mécanisme de détection de calamine (32), plus précisément sous la forme d'un fonctionnement séparé.
  14. Procédé selon la revendication 12 ou 13, caractérisé en ce que l'on peut établir, respectivement l'on établit, au moyen d'une excitation de l'unité de pompage sous haute pression (24), une pression, avec laquelle le liquide (18) est éjecté à partir des buses d'éjection (16; 16.1, 16.2, 16.3), en fonction des signaux du mécanisme d'inspection de la surface (26).
  15. Procédé selon l'une quelconque des revendications 12 à 14, caractérisé l'on ajuste une distance (A) de la tête de rotor par rapport à la surface (20) de la pièce à usiner (12), plus précisément en fonction des signaux du mécanisme d'inspection de la surface (26).
  16. Procédé selon l'une quelconque des revendications 12 à 15, caractérisé l'on diminue une vitesse d'avance (v) de la pièce à usiner (12) dans sa direction de déplacement (X), au cas où la qualité du décalaminage de la pièce à usiner (12) dépasse vers le bas la valeur de consigne prédéfinie ; ou bien en ce qu'on augmente une vitesse d'avance (v) de la pièce à usiner dans sa direction de déplacement (X) jusqu'à ce que la qualité de décalaminage de la pièce à usiner (12) respecte la valeur de consigne prédéfinie.
  17. Procédé selon l'une quelconque des revendications 6 à 16, caractérisé par une paire de têtes de rotors (29) ou par une paire de modules de rotors (31), dans laquelle est disposée au moins une tête de rotor (14), respectivement au-dessus et en dessous de la pièce à usiner mise en mouvement (12) ; dans lequel la pression, avec laquelle un liquide (18) vient s'appliquer sur la pièce à usiner (12) par l'intermédiaire des buses d'éjection (16 ; 16.1, 16.2, 16.3) de la tête de rotor disposée en dessous de la pièce à usiner (12) est supérieure à celle que l'on obtient dans le cas des buses d'éjection (16 ; 16.1, 16.2, 16.3) de la tête de rotor disposée au-dessus de la pièce à usiner (12).
EP17712093.8A 2016-03-18 2017-03-17 Dispositif et procédé de décalaminage d'une pièce déplacée Active EP3429773B1 (fr)

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DE102016204579 2016-03-18
DE102016204570 2016-03-18
DE102016217560.2A DE102016217560A1 (de) 2016-03-18 2016-09-14 Vorrichtung und Verfahren zum Entzundern eines Werkstücks
DE102016217561.0A DE102016217561A1 (de) 2016-03-18 2016-09-14 Vorrichtung und Verfahren zum Entzundern eines bewegten Werkstücks
DE102016217562.9A DE102016217562A1 (de) 2016-03-18 2016-09-14 Vorrichtung und Verfahren zum Entzundern eines bewegten Werkstücks
PCT/EP2017/056462 WO2017158191A1 (fr) 2016-03-18 2017-03-17 Dispositif et procédé de décalaminage d'une pièce déplacée

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DE102016217560A1 (de) 2017-09-21
CN108778544A (zh) 2018-11-09
US11103907B2 (en) 2021-08-31
KR20180113588A (ko) 2018-10-16
CN108883452B (zh) 2021-01-15
RU2699426C1 (ru) 2019-09-05
EP3429773A1 (fr) 2019-01-23
EP3429771B1 (fr) 2020-07-08
CN108883452A (zh) 2018-11-23
JP2019511366A (ja) 2019-04-25
WO2017158191A1 (fr) 2017-09-21
RU2697746C1 (ru) 2019-08-19
JP2019511367A (ja) 2019-04-25
CN108778543B (zh) 2020-04-10
JP6770088B2 (ja) 2020-10-14
US20190076900A1 (en) 2019-03-14
JP2019508257A (ja) 2019-03-28
WO2017157940A1 (fr) 2017-09-21
CN108778544B (zh) 2020-11-27
EP3429771A1 (fr) 2019-01-23
KR102141440B1 (ko) 2020-08-05
EP3429770A1 (fr) 2019-01-23
JP7018020B2 (ja) 2022-02-09
KR20180117139A (ko) 2018-10-26
RU2701586C1 (ru) 2019-09-30
CN108778543A (zh) 2018-11-09
EP3429770B1 (fr) 2020-05-13
KR102166086B1 (ko) 2020-10-15
DE102016217562A1 (de) 2017-09-21
WO2017158035A1 (fr) 2017-09-21
DE102016217561A1 (de) 2017-09-21
KR102183495B1 (ko) 2020-11-26
KR20180117157A (ko) 2018-10-26

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