CN112512914A - Structure, sheet, and method and apparatus for forming antifouling coating layer - Google Patents
Structure, sheet, and method and apparatus for forming antifouling coating layer Download PDFInfo
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- CN112512914A CN112512914A CN201880094721.XA CN201880094721A CN112512914A CN 112512914 A CN112512914 A CN 112512914A CN 201880094721 A CN201880094721 A CN 201880094721A CN 112512914 A CN112512914 A CN 112512914A
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- antifouling paint
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
- B63B59/04—Preventing hull fouling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
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Abstract
In a monitoring region T provided in a water-immersed portion of a hull plate of a ship, a paint layer of an antifouling paint P is formed in a step shape on a paint layer of an anticorrosive paint Q. The monitor region T is divided into 4 divisions (i.e., divisions T1 to T4) and a region T0 surrounding the divisions at the right and left sides thereof, and the coating film thicknesses of the antifouling paint P formed in the divisions T1 to T4 are different and known. The antifouling paint P is dissolved out into water as the ship sails. The operator can know the degree of elution of the antifouling paint P applied to the hull plate lower portion 11 (the region other than the monitored region T) by visually checking whether or not the antifouling paint P is completely dissolved in any one of the regions in the monitored region T.
Description
Technical Field
The present invention relates to a structure, a sheet and a method for forming an antifouling coating layer.
Background
In order to prevent aquatic organisms such as barnacles from adhering to underwater structures such as ships, antifouling paints have been applied to the structures (for example, patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2000-005692
Disclosure of Invention
Problems to be solved by the invention
The antifouling coating layer coated on the structure is gradually dissolved out into water, and when the antifouling coating layer is completely dissolved, organisms in the water are attached to the part. For example, when aquatic organisms attach to a ship, the fuel consumption required for navigation increases. Therefore, it is necessary to recoat the antifouling paint before the antifouling paint layer is dissolved out. However, since the application of the antifouling paint takes time and cost, it is not desirable to apply the antifouling paint again while leaving a sufficient amount of the antifouling paint layer. There is therefore a need to determine the extent of dissolution of an anti-fouling coating layer applied to a structure.
In view of the above background, the present invention provides a means for determining the degree of elution of an antifouling coating layer applied to an underwater structure.
Means for solving the problems
In order to solve the above problems, the present invention provides, as the 1 st aspect, a structure having an antifouling coating layer on a surface contacting water, the antifouling coating layer having a monitor region in which the antifouling coating layer having a coating film thickness thinner than the surrounding is formed.
According to the structure of claim 1, the degree of elution of the antifouling coating layer of the structure is determined by visually checking or imaging the antifouling coating layer in the monitored area.
The present invention provides the following configuration as the 2 nd aspect: in the structure according to claim 1, the monitor region is divided into 2 or more divisions, and the antifouling paint layers in the 2 or more divisions have different coating thicknesses.
According to the structure of claim 2, the degree of elution of the antifouling coating layer from the structure is determined by visually checking or imaging the partition in which the antifouling coating layer is completely eluted out of the 2 or more partitions.
The present invention provides the following configuration as the 3 rd aspect: in the structure according to claim 1 or 2, the surface that contacts water has 2 or more monitoring regions at positions separated from each other.
According to the structure of claim 3, the degree of elution of the antifouling coating layer of the structure at different positions is determined.
The present invention provides the following configuration as the 4 th aspect: the structure according to any one of aspects 1 to 3 has a mark indicating a range of the monitoring region.
According to the structure of the 4 th aspect, the monitor region included in the antifouling paint layer of the structure can be easily determined.
The present invention provides, as the 5 th aspect, a sheet comprising a base layer and an antifouling paint layer formed on the surface of the base layer and having a known coating film thickness, wherein the back surface of the base layer is attached to the surface of a structure which is in contact with water.
According to the sheet of the 5 th aspect, the degree of elution of the antifouling coating layer applied to the region around the region of the structure to which the sheet is attached is determined by visually checking or imaging the antifouling coating layer of the sheet attached to the structure. In addition, since the sheet according to embodiment 6 is produced, for example, in a factory, it is easy to improve the accuracy of the coating thickness of the antifouling coating layer as compared with the case of coating the antifouling coating layer on the structure.
The present invention provides the following configuration as the 6 th aspect: in the sheet according to claim 5, the region in which the antifouling paint layer is formed is divided into 2 or more divisions, and the antifouling paint layers in the 2 or more divisions have different coating thicknesses.
According to the sheet of the 6 th aspect, the degree of elution of the antifouling coating layer applied to the region surrounding the region of the structure to which the sheet is attached is determined by visually checking or photographing the regions of the structure to which the antifouling coating layer is completely eluted out from the 2 or more regions of the sheet attached to the structure.
The present invention provides the following configuration as the 7 th aspect: in the sheet according to claim 5 or 6, the base layer is molded so that the back surface thereof follows the surface shape of the region of the structure where the sheet is attached.
According to the sheet of the 7 th aspect, even if the region of the surface of the structure where the sheet is attached is a curved surface, the sheet is not easily peeled off from the structure.
The present invention provides the following configuration as the 8 th aspect: in the sheet of any one of claims 5 to 7, the base layer has a magnet.
According to the sheet of the 8 th aspect, the sheet can be easily attached to and detached from a structure including a magnetic material such as iron.
As the 9 th aspect, the present invention provides a method for forming an antifouling paint layer, comprising: a step of applying an antifouling paint having a predetermined coating film thickness or more to a surface to be coated; and a step of abutting a gauge having a groove of a known depth on the undried antifouling paint applied in the above-described applying step and sliding, thereby cutting off a part of the undried antifouling paint.
According to the method for forming an antifouling paint layer of the 9 th aspect, an antifouling paint layer having a high accuracy of the coating film thickness is formed on the surface to be coated.
As a 10 th aspect, the present invention provides an apparatus comprising: an acquisition unit that acquires image data obtained by imaging the monitoring area of the structure according to any one of the embodiments 1 to 4 with a camera; and a determination unit configured to determine a degree of elution of the antifouling coating layer based on an image represented by the image data.
According to the apparatus of the 10 th aspect, the degree of elution of the antifouling paint layer of the structure can be determined by imaging the monitoring area of the structure with the camera.
The present invention provides the following configuration as an 11 th aspect: in the apparatus according to claim 10, the acquisition unit acquires image data obtained by imaging the monitoring area of the structure according to claim 4 with a camera; the specifying unit specifies a range of the monitoring region in the image based on a position of a marker included in the image represented by the image data.
According to the apparatus of claim 11, erroneous detection of the range of the monitoring region can be avoided by the marking, and the possibility of erroneously determining the degree of elution of the antifouling paint layer is low.
Drawings
Fig. 1 is an external view of a ship according to an embodiment.
Fig. 2 is a cross-sectional view of a monitoring region of a lower portion of an outer hull plate of a ship and a peripheral portion thereof according to an embodiment.
Fig. 3 is an external view of a gauge used in a method for forming an antifouling paint layer according to an embodiment.
Fig. 4 is a diagram showing a process of a method of forming an antifouling paint layer of one embodiment.
Fig. 5 is an external view of a monitoring region of a lower portion of an outer hull plate of a ship according to an embodiment.
FIG. 6 is an external view of an antifouling paint sheet according to a modification.
Fig. 7 is an external view of a gauge used in a method for forming an antifouling paint layer according to a modification.
Fig. 8 is a diagram showing a functional configuration of an image recognition apparatus according to a modification.
Detailed Description
[ embodiment ]
Fig. 1 is an external view of a ship 1 as a structure according to an embodiment of the present invention.
An exterior hull lower portion 11 of the ship 1, which is a lower portion of the exterior hull, is coated with an antifouling paint P. A monitoring region T is provided in the submerged portion of the hull plate lower portion 11, separately from the surrounding region. The antifouling paint P is also applied in the monitoring area T. The accuracy of the thickness of the coating film of the antifouling paint P applied to the monitored region T is higher than the accuracy of the thickness of the coating film of the antifouling paint P applied to the region other than the monitored region T.
The monitoring region T is divided into 4 divisions, and the coating film thicknesses of the antifouling paints P applied in the divisions are different from each other.
Fig. 2 is a cross-sectional view of the monitored region T of the lower hull plate 11 and its surrounding region immediately after the application of the antifouling paint P is completed, that is, in a state where the antifouling paint P has not yet dissolved into water.
The surface of the hull lower portion 11 that is in contact with water is coated with an anticorrosive paint Q over the entire area including the monitoring region T. The anticorrosive paint Q and the antifouling paint P have different colors.
An antifouling paint P is applied to the paint layer of the anticorrosive paint Q so as to form a predetermined coating film thickness in a region other than the monitor region T on the surface of the hull outer panel lower portion 11 that is in contact with water. Hereinafter, the coating film thickness (when dried) of the antifouling paint P in the region other than the monitored region T is set to 200 μm as an example. In the following description, the antifouling paint P is set so that the coating film thickness from immediately after application to drying is reduced to 50%.
The monitoring region T is divided into 4 sections, namely a section T1, a section T2, a section T3 and a section T4. The side of the segment t1 not contacting the segment t2 and the side of the segment t4 not contacting the segment t3 are in contact with the region t 0.
In the region t0, the paint layer of the antifouling paint P is not formed on the paint layer of the anticorrosive paint Q. In the partition t1, a coating layer of the antifouling paint P was formed on the coating layer of the anticorrosive paint Q so that the coating film thickness was 50 μm. In the partition t2, a coating layer of the antifouling paint P was formed on the coating layer of the anticorrosive paint Q so that the coating film thickness was 100 μm. In the partition t3, a coating layer of the antifouling paint P was formed on the coating layer of the anticorrosive paint Q so that the coating film thickness was 150 μm. In the partition t4, a coating layer of the antifouling paint P was formed on the coating layer of the anticorrosive paint Q so that the coating film thickness was 200 μm.
In fig. 2, the thickness direction of the coating film is enlarged from the actual thickness direction in order to clearly show the difference in the coating film thickness of the antifouling paint P depending on the partition.
Next, a method for forming the antifouling paint P having a coating film thickness that differs from region to region in the monitored region T will be described. Fig. 3 is an external view of a gauge 2 used in a method for forming an antifouling paint layer according to an embodiment of the present invention. Fig. 3(a) is a side view of the gauge 2, and fig. 3(b) is a bottom view of the gauge 2.
The gauge 2 is a plate-like member having a stepped groove F. The grooves F have regions having different depths, that is, regions F1 having a depth of 100 μm from the bottom B as a reference, regions F2 having a depth of 200 μm from the bottom B, regions F3 having a depth of 300 μm from the bottom B, and regions F4 having a depth of 400 μm from the bottom B.
In fig. 3, the grooves F are shown in a stepped shape for easy understanding, and the depth direction of the grooves F is enlarged as compared with the actual case.
Fig. 4 is a diagram showing a procedure of a method of forming a paint layer of the antifouling paint P in the monitored area T using the gauge 2. First, the worker applies the antifouling paint P so that the coating film thickness is 400 μm to the paint layer of the dried anticorrosive paint Q of the hull outer panel lower portion 11 in a state where the monitor region T is shielded (step S101).
Next, the antifouling paint P applied in step S101 is dried (step S102). Thus, a paint layer of the antifouling paint P having a coating film thickness of 200 μm was formed on the paint layer of the anticorrosive paint Q in the region other than the monitor region T of the hull outer panel lower portion 11.
Next, the worker applies the antifouling paint P so that the coating film thickness is 400 μm or more to the paint layer of the dried anticorrosive paint Q in the monitored region T (step S103).
After step S103, the operator brings gauge 2 into contact with monitoring area T so that left and right bottom portions B of gauge 2 are located at the upper ends of left and right areas T0 of monitoring area T as quickly as possible, and slides gauge 2 in the downward direction until bottom portion B reaches the lower end of area T0 (step S104). Thus, a part of the undried antifouling paint P applied in the monitoring region T was scraped off, a paint layer of the undried antifouling paint P having a film thickness of 100 μm was formed in the partition T1, a paint layer of the undried antifouling paint P having a film thickness of 200 μm was formed in the partition T2, a paint layer of the undried antifouling paint P having a film thickness of 300 μm was formed in the partition T3, and a paint layer of the undried antifouling paint P having a film thickness of 400 μm was formed in the partition T4.
Next, the antifouling paint P applied in step S103 and partially scraped off in step S104 is dried (step S105). As a result, a paint layer of the antifouling paint P having a film thickness of 50 μm was formed in the partition T1 of the monitoring region T, a paint layer of the antifouling paint P having a film thickness of 100 μm was formed in the partition T2, a paint layer of the antifouling paint P having a film thickness of 150 μm was formed in the partition T3, and a paint layer of the antifouling paint P having a film thickness of 200 μm was formed in the partition T4.
Fig. 5 is an external view showing a state where the ship 1 is sailing and a part of the paint film of the antifouling paint P is eluted in the monitored area T. The operator can easily determine the degree of elution of the antifouling paint P by directly viewing the monitoring area T or by viewing an image captured by an underwater camera or the like.
Specifically, in the state shown in FIG. 5(a), it is found that the elution amount of the antifouling paint P is less than 50 μm; in the state of FIG. 5(b), it is understood that the amount of elution of the antifouling paint P is 50 μm or more and less than 100 μm; in the state of FIG. 5(c), it is understood that the amount of elution of the antifouling paint P is 100 μm or more and less than 150 μm; in the state shown in FIG. 5(d), it is understood that the amount of elution of the antifouling paint P is 150 μm or more and less than 200. mu.m.
According to the ship 1 having the monitoring area T described above, the following effects can be obtained.
(1) First, according to the ship 1, the proper timing of the re-application of the antifouling paint P can be determined. For example, by averaging the time required for the state of the monitored region T to change from fig. 5(a) to fig. 5(b), the time required for the state of the monitored region T to change from fig. 5(b) to fig. 5(c), and the time required for the state of the monitored region T to change from fig. 5(c) to fig. 5(d), it is possible to determine the approximate time required for the antifouling paint P to elute in an amount of 50 μm. Therefore, after the state change of the monitored area T is shown in fig. 5(d), the antifouling paint P may be applied to the ship 1 at a timing earlier than the time elapsed for estimating that the antifouling paint P is redissolved by 50 μm.
(2) The applicant of the present application proposed a technique for estimating the amount of reduction of the antifouling paint on the water surface of a ship, that is, the amount of elution, based on the water temperature, the ship speed, and the like at the time of ship navigation in international application PCT/JP 2015/070517. According to the ship 1, the difference between the amount of elution of the antifouling paint P estimated based on the water temperature, the ship speed, and the like at the time of sailing of the ship 1 and the actual amount of elution of the antifouling paint P is significant. Therefore, in order to reduce this difference, for example, the structure and coefficient of the functional formula used for estimation may be adjusted to improve the estimation accuracy of the elution amount of the antifouling paint P.
If the amount of elution of the antifouling paint P can be estimated with sufficiently high accuracy using the monitored area T, the monitored area T does not necessarily need to be provided on the ship 1 at the time of subsequent recoating. In this case, the amount of elution of the antifouling paint P can be estimated with high accuracy even for a ship having the same or similar shape as the hull of the ship 1.
[ modified examples ]
The above embodiment may be variously modified. Examples of these variations are shown below. The above-described embodiment and the modifications described below may be combined as appropriate.
(1) In the above embodiment, the monitor region T has 4 sections in which the coating film thicknesses of the applied antifouling paint P are different. The number of partitions of the monitoring area T is not limited to 4, and may be 2 to 3 or 5 or more. For example, the number of divisions of the monitored region T can be set to 8, and the coating film thickness of the antifouling paint P in these divisions can be increased at intervals of 25 μm such as 25 μm, 50 μm,. cndot..
The monitor region T may not have a subarea, and the entire monitor region T may be coated with the antifouling paint P having the same coating film thickness. In this case, if the thickness of the coating film in the monitored region T is made thinner than the thickness of the coating film in the peripheral region, the antifouling paint P in the monitored region T is completely eluted before the antifouling paint P in the peripheral region is completely eluted, and therefore, the complete elution of the antifouling paint P in the peripheral region can be prevented.
(2) In the above embodiment, the monitor region T is disposed at the position of the hull plate lower portion 11 shown in fig. 1, but the position of the monitor region T may be arbitrarily changed.
In addition, 2 or more monitoring regions T may be provided at mutually separated positions of the hull plate lower portion 11. In general, the elution rate of the antifouling paint P differs depending on the position of the hull plate lower portion 11. If the monitor regions T are provided at different positions of the hull plate lower portion 11, the degree of elution of the antifouling paint P at each position of the hull plate lower portion 11 can be known by observing the 2 or more monitor regions T.
If the elution speed of the antifouling paint P at each position of the outer hull lower portion 11 is known as described above, when the antifouling paint P is applied to the ship 1 or a ship having the same or similar shape as the hull of the ship 1 thereafter, the antifouling paint P is applied thickly in a region where the elution speed is high and thinly in a region where the elution speed is low, and thus variation in timing when the antifouling paint P is completely eluted in the entire region can be suppressed. As a result, the following disadvantages can be avoided: since the residual amount of the antifouling paint P in some areas reaches the limit, even if there is a large amount of the antifouling paint P remaining in other areas, the coating must be performed again by docking.
(3) In the above embodiment, as shown in fig. 2, a region T0 where the antifouling paint P is not applied is provided in the monitor region T. In the region t0, the anticorrosive paint Q having a color different from that of the antifouling paint P is exposed, and therefore the appearance is different from the surroundings. Therefore, the operator can easily distinguish the section T1 to T4 sandwiched between the regions T0 from the surrounding region as the monitoring region T. That is, the region T0 functions as a marker indicating the range of the monitoring region T.
In the above embodiment, the mark indicating the range of the monitored region T is formed by the region T0 where the anticorrosive paint Q is exposed, but the mark indicating the range of the monitored region T may be formed by another method. For example, the mark may be formed by applying an antifouling paint having a color different from that of the antifouling paint P to the anticorrosive paint Q in the region t 0.
The shape and arrangement of the mark indicating the range of the monitoring region T are not limited to the shape and arrangement of the region T0 described above. For example, the markers may be disposed so as to surround the periphery of the monitoring region T, or the markers may be disposed at the four corners of the monitoring region T.
(4) Characters or the like for displaying identification information for identifying the monitoring area T from other monitoring areas may be formed in or near the monitoring area T. For example, characters or the like indicating the name of the ship 1 in which the monitoring area T is installed may be formed as the identification information of the monitoring area T in or near the monitoring area T by using an antifouling paint having a color different from that of the antifouling paint P. In this case, the operator can easily know which vessel the monitoring area T is when observing the monitoring area T.
Further, characters or the like indicating the position of the ship 1 where the monitoring region T is provided may be formed as the identification information of the monitoring region T in or near the monitoring region T by using, for example, an antifouling paint having a different color from the antifouling paint P. In this case, the operator can easily know at which position of the ship 1 the monitoring area T is disposed when observing the monitoring area T.
Further, characters or the like indicating the timing of applying the antifouling paint P to the ship 1 may be formed in the monitoring region T or in the vicinity of the monitoring region T by using an antifouling paint having a different color from the antifouling paint P, for example. In this case, the operator can easily know the timing of applying the antifouling paint P to the ship 1 while observing the monitoring area T.
In addition, a mark or the like indicating the direction (up, down, left, and right) of the monitored area T may be formed in or near the monitored area T with an antifouling paint having a color different from that of the antifouling paint P, for example. In this case, for example, when observing an image obtained by imaging the monitoring area T, the operator can easily determine the upper, lower, left, and right sides of the image.
(5) In the above embodiment, a method of forming a paint film of the antifouling paint P by applying the antifouling paint P on the paint layer of the anticorrosive paint Q in the monitored area T of the hull plate lower portion 11 is adopted. Instead of this, a sheet formed with an antifouling paint layer having a known coating film thickness may be attached to the submerged portion of the lower hull plate 11.
Fig. 6 is an external view of the antifouling paint sheet 3 according to this modification. Fig. 6(a) is a plan view of the antifouling paint sheet 3, and fig. 6(b) is a side view of the antifouling paint sheet 3. The antifouling paint sheet 3 has a base layer 31 and a paint film of the antifouling paint P formed in a stepwise manner on the surface of the base layer 31. The base layer 31 is different in color from the antifouling paint P.
The base layer 31 may be a flexible member such as a resin film or may be a rigid member such as a metal plate.
As a method of attaching the antifouling paint sheet 3 to the hull outer panel lower portion 11, for example, a method using an adhesive is conceivable. Alternatively, an adhesive layer may be provided on the back surface of the base layer 31, and the antifouling paint sheet 3 may be attached to the hull outer panel lower portion 11 by the adhesive layer. When the base layer 31 is a rigid member such as a metal plate, the antifouling paint sheet 3 can be attached to the hull outer panel lower portion 11 with screws or the like.
The foundation 31 may be configured to have a magnet, and the antifouling paint sheet 3 may be attached to the hull outer panel lower portion 11 by magnetic force. In this case, the worker can easily attach and detach the antifouling paint sheet 3 to and from the ship 1.
The back surface of the base layer 31 may be formed to conform to the surface shape of the region of the hull plate lower portion 11 to which the antifouling paint sheet 3 is attached. Such a base layer 31 is manufactured, for example, by heating a thermoplastic resin sheet, bringing the sheet into contact with a region of the hull plate lower portion 11 where the antifouling paint sheet 3 is attached, deforming the sheet, and then cooling the sheet. When the antifouling paint sheet 3 having the base layer 31 thus molded is attached to the hull plate lower portion 11, a gap is not easily generated between the antifouling paint sheet 3 and the hull plate lower portion 11, and the antifouling paint sheet 3 is not easily peeled off from the hull plate lower portion 11.
Further, characters or the like indicating identification information for identifying the self-sheet from other antifouling paint sheets of the same kind may be formed on the antifouling paint sheet 3. For example, a number or the like indicating a serial number may be formed on the antifouling paint sheet 3 with an antifouling paint having a color different from that of the antifouling paint P. In this case, when the worker mounts the antifouling paint sheet 3 on the ship 1, information such as the ship name of the ship 1, the mounting position of the antifouling paint sheet 3 on the ship 1, and the mounting date is recorded in advance in association with the serial number. Further, when the antifouling paint sheet 3 is observed, it is possible to easily know which position of which ship the antifouling paint sheet 3 is installed at based on the information recorded in association with the serial number.
(6) In the above embodiment, the step of applying the antifouling paint P on the anticorrosive paint Q and drying it is 1 time, but the number of times may be plural. The thicker the antifouling paint P is formed, the longer the time required for drying the inner antifouling paint P becomes geometrically. Therefore, by performing the application and drying of the antifouling paint P in a plurality of times, the time required for applying the antifouling paint P as a whole can be shortened.
Fig. 7 is a side view of gauges 4A and 4B used for forming coating layers of the antifouling paint P different in coating film thickness in 4 divisions within the monitored region T by performing 2 times of application and drying of the antifouling paint P. The groove G of the gauge 4A shown in fig. 7(a) has a region G1 corresponding to the partition t1, and a region G2 corresponding to the partitions t2 to t 4. The depth of the region g1 was 100 μm, and the depth of the region g2 was 200. mu.m. The groove H of the gauge 4B shown in fig. 7(B) has regions H1 to H4 corresponding to the divisions t1 to t4, respectively. The depth of the region h1 was 50 μm, the depth of the region h2 was 100 μm, the depth of the region h3 was 200 μm, and the depth of the region h4 was 300 μm.
The operator applies the antifouling paint P to the dried anticorrosive paint Q in the monitoring region T so that the coating film thickness is 200 μm or more, and then slides the gauge 4A to cut off a part of the undried antifouling paint P. Thereafter, when the antifouling paint P was dried, a layer of the dried antifouling paint P having a coating thickness of 50 μm was formed in the partition T1 of the monitoring region T, and a layer of the dried antifouling paint P having a coating thickness of 100 μm was formed in the partitions T2 to T4 of the monitoring region T.
Next, the operator applies the antifouling paint P to the dried antifouling paint P so that the coating film thickness is 200 μm or more, and then slides the gauge 4B to cut off a part of the undried antifouling paint P. By this operation, in the divisional areas t1 and t2, all of the antifouling paint P applied on the dried antifouling paint P is removed. In the partition t3, a layer of undried antifouling paint P having a coating film thickness of 100 μm was formed on the dried antifouling paint P (coating film thickness of 100 μm). In partition t4, a layer of undried antifouling paint P having a coating film thickness of 200 μm was formed on dried antifouling paint P (coating thickness of 100 μm).
Thereafter, when the antifouling paint P was dried, a layer of the dried antifouling paint P having a coating film thickness of 150 μm was formed in the partition t3, and a layer of the dried antifouling paint P having a coating film thickness of 200 μm was formed in the partition t 4.
(7) In the above embodiment, the operator determines the degree of elution of the antifouling paint P by directly viewing the monitoring area T or by viewing an image obtained by imaging the monitoring area T. Instead, the degree of elution of the antifouling paint P may be determined by an apparatus. For example, the image recognition device may recognize an image obtained by imaging the monitoring region T by a known image recognition method to determine the degree of elution of the antifouling paint P.
Fig. 8 is a diagram showing a functional configuration of the image recognition apparatus 5 used in this modification. The hardware of the image recognition device 5 is, for example, a conventional computer including a processor for performing data processing in accordance with a program, a memory for storing the program executed by the processor or data used by the processor, and an interface for exchanging data with an external device. The processor of the computer performs data processing in accordance with the program of the present modification, thereby realizing the image recognition apparatus 5 including the components shown in fig. 8.
The image recognition device 5 includes an acquisition unit 51, a storage unit 52, and a determination unit 53 as functional components. The acquisition unit 51 acquires image data representing an image of the monitored area T captured by the camera 6 from the camera 6. The storage unit 52 stores the image data acquired by the acquisition unit 51.
The determination unit 53 determines the degree of elution of the antifouling paint P based on the image represented by the image data. Specifically, the determination unit 53 extracts the monitored region T from the image by a known image recognition method, detects the color tone and the like in each partition of the extracted monitored region T, and determines the elution degree of the antifouling paint P in the monitored region T based on the detected color tone and the like. The data indicating the degree of elution of the antifouling paint P specified by the specifying unit 53 is stored in the storage unit 52.
The operator or the like can know the degree of elution of the antifouling paint P by referring to the data stored in the storage unit 52.
When the image indicated by the image data acquired by the acquisition unit 51 includes a mark indicating the range of the layer on which the antifouling paint P is formed, the specification unit 53 specifies the range of the monitoring region T (the range of the layer on which the antifouling paint P is formed) in the image based on the position of the mark.
When the image indicated by the image data acquired by the acquisition unit 51 includes a mark or the like indicating the direction of the monitoring region T, the specification unit 53 specifies the direction of the monitoring region T in the image based on the mark or the like.
When the image represented by the image data acquired by the acquisition unit 51 includes identification information indicating the monitored area T (for example, information indicating the ship name, the position of the monitored area in the ship, and the like), a character indicating the application timing of the antifouling paint P, and the like, the specification unit 53 recognizes the character and the like, and stores the recognized information in the storage unit 52 in association with data indicating the degree of elution of the antifouling paint P.
From the data stored in the storage unit 52 as described above, an operator or the like can easily know the degree of elution of the antifouling paint P at a specific position of a specific ship. Further, the operator or the like can know at what speed the antifouling paint P is eluted after the antifouling paint P is applied, based on the time at which the antifouling paint P is applied, which is indicated by the data stored in the storage unit 52.
(8) In the above embodiment, the coating film thickness of the antifouling paint P applied to the hull lower part 11 was set to 200 μm, but the coating film thickness of the antifouling paint P may be changed arbitrarily. The thickness of the coating film of the antifouling paint P formed in the monitored region T can be appropriately changed according to the thickness of the coating film of the antifouling paint P formed outside the monitored region T.
(9) In the above embodiment, the coating film thickness when the antifouling paint P is dried is 50% of that when it is not dried, but the ratio varies depending on the type of the antifouling paint P and the like. The depth of the groove F of the gauge 2 corresponding to each partition needs to be appropriately changed according to the ratio.
(10) In the above embodiment, a layer of the antifouling paint P whose coating film thickness is known is formed in the monitored area T by the method using the gauge 2. The method of forming a layer of the antifouling paint P whose coating film thickness is known in the monitored area T is not limited to the method using the gauge 2. For example, a method of spraying the antifouling paint P with a sprayer may be employed.
In the case of forming the layer of the antifouling paint P by using the atomizer, for example, a conveyor that conveys the atomizer in a two-dimensional direction at a certain speed is used. The operator arranges the conveyor provided with the sprayer so that the conveying surface is a parallel surface having a predetermined distance from the surface to be coated of the monitoring area T. Thereafter, the antifouling paint P is sprayed to the surface to be coated in a fixed amount per unit time from a sprayer which conveys the surface to be coated in a scanning manner.
The conveyor first conveys the sprayer that sprays the antifouling paint P so as to scan the divisional areas t1 to t4 1 time or more. In this case, it is preferable to shield the peripheral region of the partitions t1 to t4 so that the antifouling paint P does not scatter and adhere to the peripheral region. Thus, a layer of the antifouling paint P having a coating film thickness of 100 μm is formed in the partition t1 to t 4. Next, the conveyor conveys the sprayer that sprays the antifouling paint P so as to scan the divisional areas t2 to t4 1 time or more. In this case, it is preferable to shield the peripheral region of the partitions t2 to t4 so that the antifouling paint P does not scatter and adhere to the peripheral region. Thus, a layer of the antifouling paint P having a coating film thickness of, for example, 200 μm is formed in the partition t2 to t 4.
Next, the conveyor conveys the sprayer that sprays the antifouling paint P so as to scan the divisional areas t3 to t4 1 time or more. In this case, it is preferable to shield the peripheral region of the partitions t3 to t4 so that the antifouling paint P does not scatter and adhere to the peripheral region. Thus, a layer of the antifouling paint P having a coating film thickness of 300 μm is formed in the partition t3 to t 4. Next, the conveyor conveys the sprayer that sprays the antifouling paint P so as to scan the partition t4 1 time or more. In this case, it is preferable to perform a masking treatment on the peripheral region of the division t4 so that the antifouling paint P does not scatter and adhere to the peripheral region. Thus, a layer of the antifouling paint P having a coating film thickness of 400 μm, for example, is formed in the partition t 4.
Thereafter, when the antifouling paint P is dried, layers of the antifouling paint P having coating film thicknesses of 50 μm, 100 μm, 150 μm and 200 μm are formed in the divisional areas t1 to t4, respectively.
(11) In the above embodiment, the sections within the monitoring region T are adjacent to each other, but these sections may be separated from each other.
(12) In the above embodiment, the 4 partitions in the monitoring region T are arranged in the left-right direction, but their arrangement may be variously modified.
(13) In the above embodiment, the ship 1 is used as the underwater structure to which the antifouling paint P is applied, but the present invention can be applied to underwater structures other than ships.
Description of the symbols
1 … ship, 2 … gauge, 3 … antifouling paint sheet, 4 … gauge, 5 … image recognition device, 6 … camera, 11 … hull bottom plate, 31 … base layer.
Claims (11)
1. A structure, wherein,
an antifouling paint layer is arranged on the surface contacting with water,
the antifouling coating layer is provided with a monitoring area, and the antifouling coating layer with the coating thickness thinner than the surrounding is formed in the monitoring area.
2. The structure according to claim 1, wherein the monitoring area is divided into 2 or more zones, and the coating film thicknesses of the antifouling coating layers in the 2 or more zones are different from each other.
3. The structure of claim 1 or 2, wherein the water-contacting face has 2 or more of the monitoring regions at positions separated from each other.
4. A structure as claimed in any one of claims 1 to 3, wherein there is a marker indicating the extent of the surveillance zone.
5. A sheet material, comprising:
a base layer, and
an antifouling paint layer formed on the surface of the base layer and having a known coating film thickness,
the back side of the base layer is mounted on the surface of the structure that is in contact with water.
6. The sheet according to claim 5, wherein the region in which the antifouling coating layer is formed is divided into 2 or more partitions, and the antifouling coating layers in the 2 or more partitions have coating film thicknesses different from each other.
7. The sheet material of claim 5 or 6, wherein the base layer is shaped with a back surface following the surface shape of the structure in the area where the sheet material is mounted.
8. The sheet material of any one of claims 5 to 7, wherein the base layer has a magnet.
9. A method for forming an antifouling paint layer, comprising:
a step of applying an antifouling paint having a predetermined coating film thickness or more to the surface to be coated, and
and a step of abutting a gauge having a groove of a known depth on the undried antifouling paint applied in the applying step and sliding, thereby cutting off a part of the undried antifouling paint.
10. An apparatus, comprising:
an acquisition unit that acquires image data obtained by imaging the monitoring area of the structure according to any one of claims 1 to 4 with a camera; and
and a determination unit configured to determine a degree of elution of the antifouling coating layer based on an image represented by the image data.
11. The apparatus of claim 10, wherein,
the acquisition unit acquires image data obtained by imaging the monitoring region of the structure according to claim 4 with a camera,
the determination unit determines a range of the monitoring region in the image based on a position of a marker included in the image represented by the image data.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2018/023229 WO2019244229A1 (en) | 2018-06-19 | 2018-06-19 | Structure, sheet, and method and device for forming antifouling paint layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112512914A true CN112512914A (en) | 2021-03-16 |
| CN112512914B CN112512914B (en) | 2022-11-25 |
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| CN201880094721.XA Active CN112512914B (en) | 2018-06-19 | 2018-06-19 | Structure, sheet, and method and apparatus for forming antifouling coating layer |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6968997B2 (en) |
| KR (1) | KR102523966B1 (en) |
| CN (1) | CN112512914B (en) |
| WO (1) | WO2019244229A1 (en) |
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|---|---|---|---|---|
| KR20220112463A (en) | 2021-02-04 | 2022-08-11 | 주식회사 엘지에너지솔루션 | Lamination apparatus and method of discharging defective elecrode cell assembly of the same |
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| JPH08302308A (en) * | 1995-05-11 | 1996-11-19 | Mitsubishi Heavy Ind Ltd | Antifouling sheet |
| JP2009184434A (en) * | 2008-02-04 | 2009-08-20 | Sumitomo Heavy Industries Marine & Engineering Co Ltd | Method of preventing hull from being stained |
| US7739974B1 (en) * | 2008-09-05 | 2010-06-22 | Brunswick Corporation | Submersible object with antifouling paint configuration |
| CN102947401A (en) * | 2010-06-23 | 2013-02-27 | 中国涂料株式会社 | Stain-proof coating composition, stain-proof coating film, and method for prevention of staining of base material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4111473B2 (en) | 1998-06-22 | 2008-07-02 | 日本ペイントマリン株式会社 | Method for forming antifouling coating film |
| KR20170000874U (en) * | 2015-08-31 | 2017-03-08 | 대우조선해양 주식회사 | Apparatus for hull cleaning |
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2018
- 2018-06-19 JP JP2020525109A patent/JP6968997B2/en active Active
- 2018-06-19 KR KR1020217000291A patent/KR102523966B1/en active IP Right Grant
- 2018-06-19 WO PCT/JP2018/023229 patent/WO2019244229A1/en active Application Filing
- 2018-06-19 CN CN201880094721.XA patent/CN112512914B/en active Active
Patent Citations (5)
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| JPS496742A (en) * | 1972-05-04 | 1974-01-21 | ||
| JPH08302308A (en) * | 1995-05-11 | 1996-11-19 | Mitsubishi Heavy Ind Ltd | Antifouling sheet |
| JP2009184434A (en) * | 2008-02-04 | 2009-08-20 | Sumitomo Heavy Industries Marine & Engineering Co Ltd | Method of preventing hull from being stained |
| US7739974B1 (en) * | 2008-09-05 | 2010-06-22 | Brunswick Corporation | Submersible object with antifouling paint configuration |
| CN102947401A (en) * | 2010-06-23 | 2013-02-27 | 中国涂料株式会社 | Stain-proof coating composition, stain-proof coating film, and method for prevention of staining of base material |
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| 宮田修 等: "実船による船底塗料からの防汚物質の溶出速度測定", 《日本マリンエンジニアリング学会誌》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019244229A1 (en) | 2019-12-26 |
| KR20210016038A (en) | 2021-02-10 |
| JP6968997B2 (en) | 2021-11-24 |
| JPWO2019244229A1 (en) | 2021-06-24 |
| CN112512914B (en) | 2022-11-25 |
| KR102523966B1 (en) | 2023-04-19 |
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