Method, apparatus and system for repairing corrosion damage to weather-exposed surfaces of objects

Abstract

The present invention relates to a method, a repair device (1) and a repair system (3) for repairing corrosion damage on a weathered surface of an object (2).

Description

[Technical field]

[0001] The present invention relates to a method, an apparatus and a system for repairing corrosion damage to a weathered surface of an object. [Background technology]

[0002] In all kinds of objects, and in particular in wind power generators, surfaces of the objects exposed to the weather often suffer damage due to corrosion, which can lead to the corresponding object being unable to be used. Summary of the Invention [Problem to be solved by the invention]

[0003] SUMMARY OF THE PRESENT EMBODIMENT It is an object of the present invention to eliminate corrosion damage in an object. [Means for solving the problem]

[0004] The above object is achieved by carrying out the following method steps in the method according to the above-mentioned embodiment using a repair device: a) pre-cleaning the surface with corrosion damage without a laser, b) laser cleaning the surface with corrosion damage, and c) coating the surface treated by laser cleaning with a protective layer. It has been unexpectedly found that the coating applied as a protective layer to the surface treated by laser cleaning of the object by this method is of higher quality and therefore has a longer life.

[0005] By corrosion damage is to be understood, on the one hand, the formation of corrosion on the weather-exposed surfaces of objects, in particular wind power generators, and, on the other hand, the application of, for example, a defective coating onto the surfaces. Repair of the corrosion damage now consists in removing the corroded material and / or the defectively applied coating.

[0006] According to one development of the method in this regard, the pre-cleaning of the surface with corrosion damage comprises rough cleaning and / or desalting and / or drying of the surface.

[0007] Rough cleaning is suitably carried out by chemical cleaning agents, such as water-soluble surfactants, or by mechanical cleaning, for example with a brush unit, for example, to clean oily stains, stains resulting from worn parts, stains due to salt damage, and other stains due to foreign bodies from surfaces with corrosion damage.

[0008] The desalting is preferably carried out with deionized water, which in the following is also referred to as demineralized water or distilled water. According to another development of the method, after the desalting, a measurement of the concentration of soluble salts on the surface having corrosion damage is carried out.

[0009] The concentration of soluble salts is measured by the Bresle method. When protecting surfaces exposed to the weather, the surfaces must be inspected for salt fouling before coating. Salt fouling can seriously impair the adhesion and quality of the coating. The Bresle method, based on the increase in the conductivity of the water depending on the concentration of salt ions, is the standard for this test according to ISO standards 8502-6 and 8502-9.

[0010] Drying of the surface is preferably performed with oil-free compressed air, which removes any rough cleaning and / or demineralization residues from the corrosion damaged surface.

[0011] According to an additional advantageous embodiment of the method, after pre-cleaning of the surface with corrosion damage, the surface is at least partially subjected to a surface post-treatment that removes material. During this surface post-treatment, the edges formed on the surface are appropriately removed. This preparatory measure also contributes to improved adhesion of the applied protective layer on the surface, which leads to a higher quality and longer-lasting coating.

[0012] According to another advantageous configuration, the laser cleaning of the surface with corrosion damage comprises the removal of the corroded material by means of a laser beam and the suction of the removed corroded material. The laser cleaning is carried out by a specially configured class 4 solid-state laser, whereby short laser pulses are focused and impinge on the surface to be cleaned. A layer of corroded material is removed from the surface to be cleaned by means of the at least partially absorbed laser radiation. The laser cleaning allows a selective, low-impact, deep-pore and scratch-free cleaning of the surface with corrosion damage. The simultaneous suction of the removed corroded material leads to a substantially residue-free cleaning of the surface with corrosion damage.

[0013] Preferably, after the laser cleaning, the surface processed by the laser beam is inspected for surface roughness. For the inspection of surface roughness, an impression is made of at least a portion of the laser-cleaned surface, and the surface roughness of the impression is analyzed. After the impression is made, only the portion of the laser-cleaned surface that was used for the impression is re-cleaned. The re-cleaning is carried out with alcohol, suitably propan-2-ol. The inspection of surface roughness allows the evaluation of the surface treated for coating, which is usually followed, and thus the assessment of the quality and life of the applied protective layer.

[0014] Furthermore, in a preferred configuration of the method, a protective layer is applied in one or more layers on the surface treated by laser cleaning. For example, multiple protective layers allow a further improvement of the quality and life span of the applied coating. In this case, various layers with different layer thicknesses may be realized in order to adapt the coating to the weather requirements.

[0015] The method is expediently carried out as an in situ method.

[0016] Preferably, the method is used to repair corrosion damage to weather-exposed surfaces of objects formed by wind motors, in particular offshore wind motors. A repair device for implementing the method is detachably attached to the wind motor, in particular to a brake caliper of a rotor brake device of the wind motor, in particular by magnetic force of a permanent magnet. Since in the case of offshore wind motors corrosion damage often occurs due to weather involving seawater, the method can be optimally used here in particular to repair corrosion damage to weather-exposed surfaces of wind motors, in particular offshore wind motors.

[0017] The object is further achieved by a repair device of the type mentioned at the beginning, which comprises a carrier device with an orientation device suitable for receiving an end effector, the orientation device being suitable for enabling an end effector arranged on the orientation device to be moved and / or swiveled, the carrier device having a holding device by means of which the carrier device can be attached to the object in such a way that the orientation device for receiving the end effector is positioned in the area of ​​the corrosion damage. By means of the repair device it is possible to repair the resulting corrosion damage in situ in the object.

[0018] By corrosion damage is to be understood, on the one hand, the formation of corrosion on the weather-exposed surfaces of objects, in particular wind power generators, and, on the other hand, the application of, for example, a defective coating onto the surfaces. Repair of the corrosion damage now consists in removing the corroded material and / or the defectively applied coating.

[0019] In one advantageous configuration of the repair device in this respect, the end effector is detachably arranged on the directing device, which allows for its exchange with another end effector, thereby achieving a multifunctionality of the repair device, which also subsequently leads to an expansion of the functionality of the repair device.

[0020] Preferably, the holding device has a mounting device for removably mounting the carrier device to the object, the mounting device being configured as a permanent magnet device for magnetically mounting the carrier device to the object, which provides for extremely simple mounting possibilities.

[0021] The holding device further comprises a base body on which the mounting device and the carrier arm carrying the orientation device are arranged, the carrier arm being arranged on the base body of the holding device so as to be pivotable and fixable in various pivot positions.

[0022] Expediently, the orientation device comprises an end effector carrier which is movably arranged on the carrier arm and positioning means by means of which the end effector carrier is movable and orientable relative to the carrier arm.

[0023] According to another advantageous development of the repair device, the end effector is configured as a laser device and / or as a pre-cleaning device and / or as a coating device and / or as a drying device and / or as an impression taking device and / or as a layer thickness measuring device.

[0024] Preferably, the laser device comprises a laser head and a laser source, the laser source being connected to the laser head by an optical transmission device, which allows a distributed arrangement of the laser device. More preferably, the laser device comprises a suction device for suctioning the eroded material resulting during the erosion removal. Laser cleaning allows selective, low-impact, deep-pore and scratch-free cleaning of the surface with erosion damage. The preferably simultaneous suction of the removed modified material leads to a substantially residue-free cleaning of the surface with erosion damage.

[0025] According to an advantageous configuration of the reconditioning device, the pre-cleaning device comprises a rough cleaning unit and / or a desalting unit and / or a drying unit and / or a concentration measuring unit.

[0026] Rough cleaning is expediently carried out by means of a chemical cleaning agent, for example a water-soluble surfactant, which can be applied by a rough cleaning unit to the corresponding surface, in particular by spraying using a spray nozzle, preferably a single-material nozzle or a multi-material nozzle. The cleaning agent can be sprayed under pressure. Rough cleaning can also be carried out by mechanical cleaning, for example by means of a brush unit arranged on the end effector. The brush unit preferably has one or more brush heads. By rough cleaning, for example greasy soiling, soiling resulting from worn parts, salt soiling and other soiling from foreign bodies are cleaned from surfaces with corrosion damage.

[0027] The desalting is preferably carried out with deionized water, which is also preferably sprayed against the corresponding surfaces to be desalted by means of a spray nozzle arrangement, in particular configured as a single-material nozzle or a multi-material nozzle.

[0028] Measurement of the concentration of soluble salts on the surfaces with corrosion damage, carried out after desalting, is carried out by the Bresle method.

[0029] Drying of the surface is preferably performed by a compressed air device blowing oil-free compressed air, whereby rough cleaning and / or demineralization residues are removed from the corrosion damaged surface.

[0030] Expediently, the protective layer is applied to the surface of the object, in particular the wind power plant, which has been treated by pre-cleaning and laser cleaning, by a coating device. The coating device is preferably configured as a spray nozzle device in the form of a single-material nozzle or a multi-material nozzle. This allows the protective layer to be applied to the treated surface with a constant, predefined layer thickness, so that the protective layer dries uniformly.

[0031] The layer thickness measuring device is suitable for determining the layer thickness of a protective layer applied to a treated surface by non-destructive methods, inter alia eddy current testing, microwave testing and ultrasonic testing.

[0032] The repair apparatus advantageously includes a controller for open-loop and / or closed-loop control of the repair apparatus. Preferably, the end effector or end effectors of the repair apparatus are open-loop and / or closed-loop controlled by the controller to substantially automate the method of repairing corrosion damage on a weather-exposed surface of an object.

[0033] Furthermore, the above problem is solved by a repair system of the type mentioned at the beginning, which is a repair system comprising a repair device described in any one of claims 19 to 30 and a wind prime mover, and the repair device is attached to the wind prime mover in a manner that allows it to be freely attached and detached.

[0034] In the repair system in this respect the repair device is preferably attached to a brake caliper of a rotor brake device of the wind motor, in particular by magnetic force of a permanent magnet.

[0035] Expediently, the repair device is suitable for carrying out the method according to any one of claims 1 to 18.

[0036] The present invention will now be described in detail with reference to the accompanying drawings. [Brief description of the drawings]

[0037] [Figure 1] FIG. 1 is a front view of one embodiment of a repair device. [Diagram 2] FIG. 13 is a right side view of this embodiment of the repair device. [Diagram 3] FIG. 2 is a left side view of this embodiment of the repair device. [Figure 4] FIG. 2 is a top view of this embodiment of the repair device. [Diagram 5] FIG. 2 is a bottom view of this embodiment of the repair device. [Figure 6] FIG. 2 is a schematic diagram of a first embodiment of an end effector for pre-cleaning. [Figure 7] FIG. 4 is a schematic diagram of a second embodiment of an end effector having a coating device and a layer thickness measuring device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0038] Unless otherwise stated, the following description relates to all embodiments shown in the drawings of a repair system 3 comprising a repair device 1 for repairing corrosion damage on a surface exposed to weather of an object 2 formed as a wind power engine.

[0039] By corrosion damage is meant, on the one hand, corrosion formed on the weather-exposed surfaces of objects, in particular wind power plants, and, on the other hand, coatings that have been applied improperly to the surfaces. Repair of corrosion damage accordingly consists in removing the corroded material and / or the improperly applied coatings.

[0040] The repair device 1 is removably mounted on a brake caliper 4, shown in dashed lines, of a rotor braking device 6 having a brake caliper 4 and a brake disc 5 of a wind motor, in particular an offshore wind motor.

[0041] The repair device 1 which is mounted on a brake caliper 4 comprises a carrier device 7 which has a holding device 8 and an orientation device 10 suitable for receiving an end effector 9 .

[0042] The holding device 8 has a mounting device 11 for removably mounting the carrier device 7 on the brake caliper 4 of the rotor brake device 6 of the wind motor. The mounting device 11 is formed as a permanent magnet arrangement 13 with two permanent magnets 12, which magnetically mounts the carrier device 7 on the brake caliper 4.

[0043] The holding device 8 has a base 14 arranged on one of the permanent magnets 12, on which the mounting device 11 and the carrier arm 15 carrying the orientation device 10 are arranged. The carrier arm 15 with its longitudinal axis X is arranged on the base 14 of the holding device 8 so as to be pivotable and fixable in various pivot positions 16. By way of example, in the illustrated embodiment the carrier arm 15 is pivoted to the horizontal pivot position 16 by a pivoting device 17 arranged on one of the permanent magnets 12. The pivoting device 17 is open-loop and / or closed-loop controlled by the control device 32, so that the pivoting device 17 can pivot the carrier arm 15 arranged on the base 14 by means of a pneumatically operated reciprocating piston 26.

[0044] The carrier device 7 is attached to the object 2 such that an orientation device 10 receiving an end effector 9 is positioned in the area of ​​corrosion damage.

[0045] The orientation device 10 is suitable for making it possible to move and / or pivot an end effector 9 arranged on the orientation device 10. For this purpose, the orientation device 10 comprises an end effector carrier 18 movably arranged on a carrier arm 15 and a positioning means 19 by means of which the end effector carrier 18 is movable and orientable relative to the carrier arm 15. The positioning means 19 comprises a drive unit 20, in particular formed as a servomotor, a drive spindle 21 and a coupling element 22. For ease of identification, the reference numbers of the drive unit 20, the drive spindle 21 and the coupling element 22 assigned to the positioning means 19 are respectively indicated with the letters a to c.

[0046] In order to move the end effector carrier 18 in the axial direction of the longitudinal axis X of the carrier arm 15, the end effector carrier 18 is arranged on a carriage 23 which is coupled to a first drive unit 20a via a first drive spindle 21a and a first connecting element 22a.

[0047] In order to orient the end effector carrier 18 about a rotation axis Y corresponding to the longitudinal axis X of the carrier arm 15 and about a further rotation axis Z oriented perpendicularly to this rotation axis Y, the end effector carrier 18 is connected to the second and third drive units 20b, 20c of the positioning means 19 via second and third drive spindles 21b, 21c and second and third connecting elements 22b, 22c. For this purpose, the end effector carrier 18 is arranged on a further carriage 27, so that the end effector carrier 18 performs a rotation about the rotation axis Z on the basis of the guidance of this further carriage 27 in the arc-shaped slot 28 during the movement of this further carriage 27 in the axial direction of the longitudinal axis X. The rotation of the end effector carrier 18 about the rotation axis Y is achieved via a gear coupling 43 connected to the connecting element 22c.

[0048] The positioning means 19 accordingly enables the end effector carrier 18 belonging to the orientation device 10 to be moved within one spatial coordinate and independently rotated about two rotation axes, thereby making it possible to optimally orient the end effector for repairing corrosion damage on the weather-exposed surface of the object 2 relative to the surface.

[0049] The end effector 9 is removably disposed on the orientation device 10, thereby allowing replacement with another end effector 24.

[0050] The end effector 9 includes a laser device 25 in the illustrated embodiment.

[0051] The laser device 25 comprises a laser head 29 and a laser source, which is connected to the laser head 29 by an optical transmission device 30. The laser head 29 is expediently mounted in a remotely controlled laser head holder with multiple degrees of freedom for manipulation. The laser device 25 is thus suitable for realizing various geometric adjustments that allow laser cleaning of the entire surface area. For all positions, focal lengths of 191 mm to 211 mm can be realized in an angular range of -3° to +5° relative to the surface normal. In addition, the laser device 25 comprises a suction device 31 for sucking up the eroded material that is produced during the removal of the erosion. Since material emissions usually occur during laser cleaning, a suction tube is brought close to the surface to be cleaned.

[0052] The repair device 1 comprises a control device 32 for open-loop and / or closed-loop control of the repair device 1, expediently at least the swivel device 17, the orientation device 10 and the end effector 9. The control device 32 is preferably configured as a programmable logic controller (PLC). The control device 32 is exemplarily shown in FIG.

[0053] In an embodiment not shown, the repair device 1 is provided with a number of end effectors 9, 24 in order to carry out the various method steps fully automatically and without exchanging the end effectors 9, 24. The end effectors 9, 24 can in this case be arranged on different carrier arms which can be addressed individually via the control device 32, which in this embodiment preferably correspond to the described carrier arm 15.

[0054] The repair device 1 performs a method for repairing corrosion damage to weather-exposed surfaces of an object 2. The method is used for repairing corrosion damage to weather-exposed surfaces of an object 2 formed by a wind motor, in particular an offshore wind motor. Since in the case of offshore wind motors corrosion damage often occurs due to weathering involving seawater, the method can be used particularly suitably for repairing corrosion damage to weather-exposed surfaces of offshore wind motors. The method is expediently carried out as an in situ method, i.e. at the wind motor's location.

[0055] The method carried out by the repair device 1 comprises the method steps a) pre-cleaning the surface with corrosion damage without a laser, b) laser cleaning the surface with corrosion damage and c) coating the surface treated by laser cleaning with a protective layer, which in this case can be formed as a coating and / or a sealing.

[0056] The pre-cleaning of the surface with corrosion damage expediently comprises the pre-cleaning steps of rough cleaning, desalting and drying of the surface. The individual pre-cleaning steps of the pre-cleaning are preferably carried out according to the above-mentioned sequence, i.e. rough cleaning, desalting and drying. Omission of the individual pre-cleaning steps is possible, but is by no means recommended.

[0057] The repair device 1 comprises a further end effector 24, which can be used for rough cleaning and is formed as a pre-cleaning device 33. This further end effector 24 formed as a pre-cleaning device 33 comprises a rough cleaning unit 34, a desalting unit 35, a concentration measuring unit 36 ​​and a drying unit 37 and is shown diagrammatically in FIG. 6. For this purpose, the pre-cleaning device 33 comprises three nozzle systems 38a-c and the concentration measuring unit 36. To better identify the nozzle systems, the nozzle systems are designated with the letters a-c. The nozzle systems 38a-c are preferably individually orientable and are each connected to a system source via a line network that is assigned to the respective nozzle system 38a-c. In cooperation with the control device 32, the pre-cleaning device 33 is expediently fully automated or can be automated.

[0058] Preferably, the rough cleaning is carried out by means of a cleaning agent, in particular a chemical cleaning agent, such as a water-soluble surfactant, which is sprayed by the nozzle system 38a of the pre-cleaning device 33 onto the surface to be roughly cleaned. By rough cleaning, for example oily soiling, soiling resulting from worn parts, coarse soiling due to salt damage and other soiling due to foreign bodies or the like are cleaned from surfaces with corrosion damage.

[0059] According to an embodiment not shown, rough cleaning is performed by mechanical cleaning, for example by means of a brush unit arranged on the end effector 9, 24. The brush unit preferably has one or more brush heads. The brush unit expediently has metal brushes, which are pressed against the surface to be cleaned, thus brushing off foreign particles and removing paint and corrosion particles. Compressed air is used to facilitate their removal. Thus, as in the case of chemical cleaning, for example oily soiling, soiling resulting from worn parts, rough soiling due to salt damage and other soiling due to foreign bodies or the like are cleaned from the surface with corrosion damage.

[0060] Desalting is then preferably carried out with deionized water, which is sprayed onto the roughly cleaned surface by a corresponding nozzle system 38b of the pre-cleaning device 33. Deionized water will hereinafter also refer to demineralized water or distilled water. In principle, any liquid capable of accepting salt ions for the desalting of the surface is suitable. Water is particularly suitable since it does not attack the surface to be pre-cleaned.

[0061] After desalting, a measurement of the concentration of soluble salts on the surface with corrosion damage is preferably carried out. The measurement of the concentration of soluble salts is carried out by the Bresle method. When protecting surfaces exposed to the weather, the surfaces must be inspected for salt damage before coating, which can seriously impair the adhesion and quality of the coating. The Bresle method, which is based on the increase in the conductivity of the water depending on the concentration of salt ions, is the standard for this test according to ISO standards 8502-6 and 8502-9.

[0062] Drying of the surface is preferably performed with oil-free compressed air, which is also provided via a corresponding nozzle system 38c of the pre-cleaning device 33. This ensures that rough cleaning and / or demineralization residues are removed from the surface having corrosion damage and the surface is not contaminated.

[0063] The pre-cleaning device 33 described above may be formed as four individual end effectors 24 .

[0064] After pre-cleaning, if necessary, the surface with corrosion damage is at least partially subjected to a surface post-treatment to remove material, e.g., formed edges are removed from the surface. This preparation also serves for improved adhesion of the applied protective layer onto the surface, which leads to a higher quality and longer-lasting coating. A separate end effector 24 may be used for this purpose and arranged on the directing device 10.

[0065] This is followed by laser cleaning of the surface with corrosion damage. For this purpose, a laser is used with a specially configured class 4 solid-state laser. By means of a laser beam which emits short laser pulses and is focused and impinges on the surface to be cleaned, the corroded material is removed from the surface by evaporation or cauterization. Laser cleaning thus allows selective, low-load, deep-pore and scratch-free cleaning of the surface with corrosion damage. At the same time, suction of the removed corroded material is performed by a suction device 31 arranged below the laser head 29, so that the surface to be cleaned by the laser device 25 practically no longer has any residues of corroded material after laser cleaning.

[0066] Preferably, after the laser cleaning, if necessary, an inspection of the surface roughness of the surface processed by the laser beam is carried out. For the inspection of the surface roughness, an impression of at least a portion of the laser-cleaned surface is made from one or more engineering silicones, and the surface roughness of this impression is analyzed. After the impression is made, only the part of the laser-cleaned surface used for the impression is re-cleaned. Preferably, one re-cleaning is carried out. This re-cleaning is carried out with alcohol, expediently with propan-2-ol. The inspection of the surface roughness allows a usually subsequent evaluation of the surface treated for coating in an analytical laboratory and thus an assessment of the quality and life of the applied protective layer. Preferably, the surface roughness of the laser-cleaned surface should be less than or equal to 1 μm. For this purpose, a further end effector 24 formed as an impression-taking device can also be used and arranged on the directing device 10.

[0067] A protective layer is then applied in single or multiple layers on the surface treated by laser cleaning. The application is carried out by another end effector 24, which in the illustrated embodiment is formed as a coating device 39. Such a coating device is shown diagrammatically in FIG. 7 and is formed as a nozzle system 41 with a spray nozzle 40, a pipeline system and a system source for storing the coating material. Depending on the coating to be applied, the spray nozzle 40 is formed as a single-material nozzle or a multiple-material nozzle. For example, a multiple-layer protective layer allows a further improvement of the quality and the lifespan of the applied coating compared to a single protective layer. In this case, various layers with different layer thicknesses may be realized in order to adapt the coating to the weather requirements. As a coating device, for example spraying or brush painting, cartridge guns or manual application of the anticorrosion layer may be used.

[0068] Suitable coatings are especially SikaCor SW-1000 Repa-Cor from SIKA, STEELPAINT or Hempadur EM 35740 from HEMPEL.

[0069] A coating device also offers the possibility of applying a surface sealant, for example the EasyQote VE Paste or EasyQote VE Basecote from STOPAQ.

[0070] The layer thickness measuring device 42 is suitable for determining the layer thickness of the protective layer applied to the treated surface in a non-destructive manner, inter alia eddy current testing, microwave testing or ultrasonic testing. The layer thickness measuring device 42 is preferably arranged on the end effector 24, particularly preferably together with the coating device 39. The layer thickness measurement is expediently carried out after drying of the protective layer or in parallel with the coating of the surface. In addition to the invention described in the claims, the disclosure of this application also includes the following: 1. 1. A method for repairing corrosion damage to a weather-exposed surface of an object using a repair device (1), comprising the steps of: a) pre-cleaning the surface having the corrosion damage without a laser; b) laser cleaning the surface having the corrosion damage; c) coating the surface treated by the laser cleaning with a protective layer; A method for repairing corrosion damage to a weather-exposed surface of an object, comprising method steps. 2. 2. The method according to claim 1, characterized in that the pre-cleaning of the surface having the corrosion damage comprises rough cleaning and / or desalting and / or drying of the surface. 3. 3. The method according to claim 2, characterized in that the rough cleaning is carried out by a chemical cleaning agent or as a mechanical cleaning using a brush unit. 4. 4. The method according to claim 2 or 3, wherein the desalting is carried out with deionized water. 5. 5. A method according to any one of claims 2 to 4, characterized in that after the desalting, a measurement of the concentration of soluble salts on the surface having the corrosion damage is carried out. 6. 6. The method according to claim 5, wherein the concentration of the soluble salt is measured by the Bresle method. 7. 7. The method according to any one of claims 2 to 6, characterized in that the drying of the surface is carried out with oil-free compressed air. 8. 8. The method according to any one of claims 1 to 7, characterized in that after the pre-cleaning of the surface having the corrosion damage, the surface is at least partially subjected to a surface post-treatment which removes material. 9. 9. The method according to claim 8, characterized in that the formed edges are removed from the surface. 10. 10. The method of any one of claims 1 to 9, characterized in that the laser cleaning of the surface having the corrosion damage comprises removal of the corroded material by a laser beam and suction of the removed corroded material. 11. 11. The method according to any one of claims 1 to 10, characterized in that after the laser cleaning, an inspection of the surface roughness of the surface processed by the laser beam is carried out. 12. 12. The method according to claim 11, characterized in that for said inspection of the surface roughness, an impression of at least a portion of the laser cleaned surface is made and the surface roughness of said impression is analyzed. 13. 13. The method of claim 12, wherein only the portion of the laser cleaned surface used for the impression is re-cleaned after the making of the impression. 14. 14. The method according to claim 13, wherein the re-cleaning is carried out with alcohol. 15. 15. The method according to any one of claims 1 to 14, characterized in that the protective layer is applied in a single layer or in multiple layers onto the surface treated by laser cleaning. 16. 16. A method according to any one of claims 1 to 15, characterized in that it is carried out as an in situ method. 17. 17. The method according to any one of claims 1 to 16, characterized in that it is used to repair corrosion damage of weather-exposed surfaces of a body (2) formed by a wind power motor, in particular an offshore wind power motor. 18. 18. The method according to claim 17, characterized in that the repair device (1) for implementing the method is detachably attached to the wind motor, in particular to a brake caliper (4) of a rotor brake device (6) of the wind motor, in particular by magnetic force of a permanent magnet. 19. 1. A repair device (1) for repairing corrosion damage on a weather-exposed surface of an object (2), comprising a carrier device (7) having an orientation device (10) suitable for receiving an end effector (9, 24), the orientation device (10) being suitable for enabling the end effector (9, 24) arranged on the orientation device (10) to be moved and / or rotated, the carrier device (7) having a holding device (8) by means of which the carrier device (7) can be attached to the object (2) such that the orientation device (10) for receiving the end effector (9, 24) is positioned in the area of ​​the corrosion damage. 20. The repair device (1) described in claim 19, characterized in that the end effector (9) is removably arranged on the orientation device (10), thereby enabling replacement with another end effector (24). 21. 21. The repair device (1) as described in claim 19 or 20, characterized in that the holding device (8) has an attachment device (11) for detachably attaching the carrier device (7) to the object (2). 22. The repair device (1) described in claim 21, characterized in that the mounting device (11) is formed as a permanent magnet device (13) that magnetically mounts the carrier device (7) to the object (2). 23. A repair device (1) as described in any one of claims 19 to 22, characterized in that the holding device (8) has a base (14) on which the mounting device (11) and a carrier arm (15) carrying the orientation device (10) are arranged. 24. The repair device (1) described in claim 23, characterized in that the carrier arm (15) is arranged rotatably on the base (14) of the holding device (8) and can be fixed in various pivot positions (16). 25. The repair device (1) of any one of claims 19 to 24, characterized in that the orientation device (10) comprises an end effector carrier (18) movably arranged on the carrier arm (15) and a positioning means (19) by means of which the end effector carrier (18) can be moved and oriented relative to the carrier arm (15). 26. 26. The repair device (1) according to any one of claims 19 to 25, characterized in that the end effector (9, 24) is formed as a laser device (25) and / or as a pre-cleaning device (33) and / or as a coating device (39) and / or as a drying device and / or as an impression taking device and / or as a layer thickness measuring device (42). 27. The repair device (1) described in claim 26, characterized in that the laser device (25) has a laser head (29) and a laser source, the laser source being connected to the laser head (29) by an optical transmission device (30). 28. The repair device (1) described in 26 or 27, characterized in that the laser device (25) has a suction device (31) that sucks up corroded material produced when removing the corrosion. 29. The repair device (1) described in any one of claims 26 to 28, characterized in that the pre-cleaning device (33) has a rough cleaning unit (34) and / or a desalting unit (35) and / or a drying unit (37) and / or a concentration measurement unit (36). 30. The repair device (1) described in any one of claims 19 to 29, characterized in that the repair device (1) is provided with a control device (32) for open-loop and / or closed-loop control of the repair device (1). 31. A repair system (3) comprising a repair device (1) described in any one of claims 19 to 30 above and a wind motor, the repair device (1) being removably attached to the wind motor. 32. A repair system (3) as described in claim 31, characterized in that the repair device (1) is attached to a brake caliper (4) of a rotor brake device (6) of the wind motor, in particular by magnetic force of a permanent magnet. 33. A repair system (3) as described in claim 31 or 32, characterized in that the repair device (1) is suitable for carrying out the method according to any one of claims 1 to 18.

Claims

1. 1. A method for repairing corrosion damage to a weather-exposed surface of an object using a repair device (1), comprising the steps of: a) pre-cleaning the surface having the corrosion damage without a laser; b) laser cleaning the surface having the corrosion damage, the laser cleaning comprising selective, gentle, deep pore and non-damaging cleaning of the surface by removing a layer of corroded material from the surface by vaporization or ablation with a laser beam, c) coating the surface treated by the laser cleaning with a protective layer; A method for repairing corrosion damage to a weather-exposed surface of an object, comprising method steps.

2. 2. The method of claim 1, wherein the pre-cleaning of the surface having the corrosion damage comprises rough cleaning and / or desalting and / or drying of the surface.

3. 3. The method according to claim 2, characterized in that the rough cleaning is carried out by means of a chemical cleaning agent or as a mechanical cleaning using a brush unit.

4. 4. The method according to claim 2 or 3, wherein the desalting is carried out with deionized water.

5. 5. The method according to claim 2, further comprising carrying out, after the desalting, a measurement of the concentration of soluble salts on the surface having the corrosion damage.

6. 6. The method of claim 5, wherein the concentration measurement of the soluble salt is performed by the Bresle method.

7. 7. The method according to claim 2, wherein the drying of the surface is carried out with oil-free compressed air.

8. 8. The method according to claim 1, characterized in that after the pre-cleaning of the surface with the corrosion damage, the surface is at least partially subjected to a surface post-treatment that removes material.

9. 9. The method of claim 8, further comprising removing formed edges from said surface.

10. 10. The method of claim 1, wherein the laser cleaning of the surface having the erosion damage comprises suction of the removed eroded material.

11. 11. The method according to claim 1, further comprising the step of: after the laser cleaning, carrying out an inspection of the surface roughness of the surface processed by the laser beam.

12. 12. The method according to claim 11, characterized in that for said inspection of the surface roughness, an impression of at least a part of the laser-cleaned surface is made and the surface roughness of said impression is analyzed.

13. 13. The method of claim 12, wherein only the portion of the laser cleaned surface used for the impression is re-cleaned after the making of the impression.

14. 14. The method of claim 13, wherein the re-cleaning is performed with alcohol.

15. 15. The method according to any one of claims 1 to 14, characterized in that the protective layer is applied in one or more layers onto the surface treated by laser cleaning.

16. 16. The method according to any one of claims 1 to 15, characterized in that it is carried out as an in situ method.

17. 17. A method according to any one of the preceding claims, characterized in that it is used to repair corrosion damage to the weather-exposed surfaces of objects (2) formed by wind power generators.

18. 18. Method according to claim 17, characterised in that the repair device (1) for carrying out the method is detachably attached to the wind motor.

19. 1. A repair device (1) for repairing corrosion damage on a weather-exposed surface of an object (2), comprising: a carrier device (7) having an orientation device (10) suitable for receiving an end effector (9, 24), the orientation device (10) being suitable for enabling the end effector (9, 24) arranged on the orientation device (10) to be moved and / or rotated, the carrier device (7) having a holding device (8) by means of which the carrier device (7) can be fixedly attached to the object (2) such that the orientation device (10) for receiving the end effector (9, 24) is positioned in the area of ​​the corrosion damage.

20. 20. The repair device (1) according to claim 19, characterized in that the end effector (9) is arranged removably on the orientation device (10), thereby enabling exchange for another end effector (24).

21. Repair device (1) according to claim 19 or 20, characterized in that the holding device (8) comprises an attachment device (11) for detachably attaching the carrier device (7) to the object (2).

22. 22. Repair device (1) according to claim 21, characterized in that the attachment device (11) is formed as a permanent magnet device (13) which magnetically attaches the carrier device (7) to the object (2).

23. The repair device (1) according to any one of claims 19 to 22, characterized in that the holding device (8) has a base (14) on which the mounting device (11) and a carrier arm (15) carrying the orientation device (10) are arranged.

24. 24. Repair device (1) according to claim 23, characterized in that the carrier arm (15) is arranged pivotably on the base body (14) of the holding device (8) and is fixable in various pivot positions (16).

25. The repair device (1) according to any one of claims 19 to 24, characterized in that the orientation device (10) comprises an end effector carrier (18) movably arranged on the carrier arm (15) and a positioning means (19) by means of which the end effector carrier (18) can be moved and oriented relative to the carrier arm (15).

26. The repair device (1) according to any one of claims 19 to 25, characterized in that the end effector (9, 24) is formed as a laser device (25) and / or as a pre-cleaning device (33) and / or as a coating device (39) and / or as a drying device and / or as an impression taking device for producing an impression of at least a portion of the laser-cleaned surface and / or as a layer thickness measuring device (42) for determining the layer thickness of a protective layer applied to the treated surface.

27. 27. The repair device (1) according to claim 26, characterized in that the laser device (25) comprises a laser head (29) and a laser source, the laser source being connected to the laser head (29) by an optical transmission device (30).

28. 28. The repair device (1) according to claim 26 or 27, characterized in that the laser device (25) has a suction device (31) for sucking up corroded material produced when removing the corrosion.

29. The repair device (1) according to any one of claims 26 to 28, characterized in that the pre-cleaning device (33) comprises a rough cleaning unit (34) and / or a desalting unit (35) and / or a drying unit (37) and / or a concentration measuring unit (36) for measuring the concentration of soluble salts.

30. The repair device (1) according to any one of claims 19 to 29, characterized in that the repair device (1) comprises a control device (32) for open-loop and / or closed-loop control of the repair device (1).

31. A repair system (3) comprising a repair device (1) according to any one of claims 19 to 30 and a wind motor, the repair device (1) being detachably attached to the wind motor.

32. 32. A repair system (3) according to claim 31, characterised in that the repair device (1) is attached to a brake caliper (4) of a rotor brake device (6) of the wind motor.

33. Repair system (3) according to claim 31 or 32, characterized in that the repair device (1) is used to carry out the method according to any one of claims 1 to 18.

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