KR101005934B1 - Painting method of ice resistant paint using peelable coating - Google Patents

Abstract

The present invention relates to an ice-resistant paint coating method for protecting the surface-treated portion after the surface treatment at the block stage and coating the peelable paint, and after the block is assembled until the coating of the ice-resistant paint, each of the plurality of blocks Surface treatment of the part corresponding to the outer wall of the ship, coating a peelable paint on the surface-treated portion of each of the plurality of blocks, assembling the plurality of blocks to dry the ship, and removing the peelable paint And repairing and surface-treating the welded portion of the ship, and painting an ice-resistant paint on the outer wall of the ship.

Peelable paint, Ice-resistant paint, Painting, Paint

Description

PAINTING METHOD OF ICE RESISTANT PAINT USING PEELABLE COATING}

The present invention relates to an anti-glare paint coating method using a peelable coating, more specifically, after the surface treatment in the block step, by coating a peelable paint, after the block is assembled, an ice-resistant paint The present invention relates to a method for painting an anti-glare paint using a peelable paint to protect the surface-treated portion until the coating is applied.

As the underground resources in accessible areas are depleted, the movement to use polar resources is increasing. Arctic Oceans such as the Barents Sea, Chukchi Sea and Beaufort Sea are known to contain a large amount of oil and gas, and drilling and exploration are actively in progress. In addition to the vast amount of oil, the possibility of mining mineral resources such as diamond, copper, zinc and nickel is greatly increased.

In addition, in order to reduce the operating distance, the number of flights in the sea ice area is increasing, and recently, an arctic tanker capable of operating the polar islands has appeared recently.

As such, improvements and research and development on icebreakers that can operate in polar regions and icebreakers that can operate in ice-sea regions are continuously underway.

Icebreakers and icebreakers operating ice and ice regions covered by ice sheets and ice-covered vessels have ice structures with a particularly strong structure to withstand the impact, friction and pressure caused by ice sheets or drift ice. A belt is formed and ice resistant paint is applied to protect the surface.

Here, ice-resistant paints are difficult to paint and dry at temperatures below 10 degrees Celsius, short pot-lifts, and short over-coating intervals, making them difficult to repair after coating. There is this.

In addition, the surface to be coated with an ice coating requires a high level of surface treatment of more than SIS 05 5900-Sa 2 1/2 specification of the Swedish Standards Association. Surface treatment may be performed by blasting or grinding, which generates a lot of harmful dust.

In addition, parts that have been surface-treated by methods such as blasting or grinding are likely to be quickly corroded when exposed to air or contaminated by foreign matter.

Therefore, in order to obtain an excellent anti-glare coating state, after the assembly and mounting process of the vessel is completed, the outer wall of the vessel should be surface treated, and then the anti-glare paint should be quickly applied to the outer wall of the vessel at a temperature of 10 degrees Celsius or more. .

By the way, in Korea, the southernmost peak temperature in the winter season is less than 10 degrees Celsius, it is inappropriate to paint the ice coating on the ship in the open or dry dock (dry dock). In addition, in order to coat the ice-resistant paint to avoid the winter season, it is necessary to secure the use schedule of the dock in advance, there is a fear that the production efficiency of the vessel is greatly reduced.

In addition, since Korea regulates scattering dust in accordance with Article 28 of the Atmospheric Environment Conservation Act, in order to perform the surface treatment work for the painting of ice-resistant paint, vacuum blasting is performed on the entire portion of the dry dock or the part to be coated with ice-proof paint. blasting, which is a costly method and is not practically applicable.

On the other hand, in order to solve the problems described above, after the surface treatment of the block of the part of the vessel in the interior and coating the ice-resistant paint, a method of completing the vessel by assembling and mounting the block with the ice-resistant paint is also tried. .

This method can increase the production efficiency by reducing the dry dock's workload, but a strong coating by ice-resistant paint is formed on the part of the block to be welded, so that welding must be performed after removing it. Since the treatment and the ice-resistant coating work must be performed, the work efficiency is lowered and a uniform coating state of the ice-resistant paint cannot be obtained.

In addition, there is a problem that the coating film formed by the ice-resistant paint is damaged in the process of assembling and mounting the block to dry the ship.

The present invention has been made to solve the above problems, the object of the present invention is to protect the surface of the block surface treated in a state suitable for the coating of the ice-resistant paint until the completion of drying of the vessel, then the ice-resistant paint It is possible to provide a coating method of the ice-resistant paint using a peelable paint that can be applied in a batch to obtain an excellent coating state.

In order to achieve the above object, according to an aspect of the present invention, the step of surface treatment of the portion corresponding to the outer wall of each of the plurality of blocks, the step of coating a peelable paint on the surface treated portion, a plurality of A peelable paint comprising the steps of: building a ship by assembling the block; removing the coating film by the peelable paint; and repairing and surface-treating the welded portion of the ship; and painting an ice-resistant paint on the outer wall of the ship. Provided is an ice-resistant coating method.

At this time, the surface treatment and painting of the ice-resistant paint can be performed only on the ice inside of the outer wall of the vessel.

Here, the surface treatment is carried out in the specification of SIS 05 5900-Sa 2 1/2 or more, and the method of surface treatment includes blasting or grinding.

The present invention paints a peelable paint on the surface-treated portion of the block, removes the peelable paint after drying the ship by assembling the block, and then the ice-resistant paint can be collectively coated on the outer wall of the ship, Corrosion of parts is prevented and environmental pollution by surface treatment in dry dock can be reduced, and the painting condition of ice-resistant paint is excellent.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show a block. This will be described with reference to FIGS. 1 and 2.

Referring to FIG. 1, the block 10 is provided with a plurality of frames 13 for reinforcement on the steel plate 11 corresponding to the outer wall of the vessel. The frame 13 is joined to the steel plate 11 by a method such as welding.

2, the block 20 is provided with a plurality of frames 23, 25, 27, 28 for reinforcement on the steel plate 21 corresponding to the outer wall of the vessel. The frames 23, 25, 27, 28 are joined to the steel plate 21 by a method such as welding.

Blocks 10 and 20 are parts corresponding to portions of ships (not shown). Since it is very difficult to manufacture large vessels such as icebreakers or icebreakers at once, each part of the vessel (not shown), such as blocks 10 and 20, is manufactured separately, and then the blocks 10 and 20 are welded. The ships (not shown) are completed by assembling with each other by the above method.

At this time, one surface of the steel plate (11, 21) corresponds to the outer wall of the vessel (not shown), so that after the vessel (not shown) is dried, it is exposed to the outside, when sea water (not shown) is launched It may be a submerged part in direct contact with, and a part of the submerged part may be an ice sheet in direct contact with ice or drift ice.

On the other hand, the steel sheet, which is the material of the blocks 10 and 20, is vulnerable to corrosion, and thus, in order to prevent corrosion, the surface treatment is performed to remove rust or black skin of the surface by a method such as blasting or grinding in the steps of blocks 10 and 20. After that, it is common to apply an anticorrosive coating.

However, in order to use the ice-resistant paint as described above, a high level of surface treatment is required. In other words, the blasting level corresponding to the SIS 05 5900-Sa 2 1/2 standard of the Swedish Standards Association is required, which is the degree of near white blast cleaning, which spray-cleans 95% or more of identifiable foreign substances. Say the status.

Therefore, although not shown, one surface of the steel sheets 11 and 21 to be coated later with an ice coating is subjected to blasting corresponding to the SIS 05 5900-Sa 2 1/2 standard and then coated with a peelable paint. The peelable paint forms a coating film (not shown) on the surface treated by blasting to protect the surfaces of the steel sheets 11 and 21.

The peelable paint will be described again below.

3 shows four blocks assembled together.

Referring to FIG. 3, the blocks 10 and 20 described with reference to FIGS. 1 and 2 are assembled together with other blocks. Since the assembly of the blocks 10 and 20 is usually performed by welding, welds 31 and 32 are formed in the assembly 30 of the blocks 10 and 20. At this time, the coating film (not shown) by peelable paint was formed in the surface 19 and 29 of the block 10 and 20 except the welding part 31 and 32. FIG.

As such, in the construction of a vessel (not shown), the blocks 10, 20 must be transported and welded for the process of assembling into the assembly 30, and the assembly 30 is in combination with other assemblies (not shown). It must be transported and welded again for assembly.

Therefore, the surfaces 19 and 29 of the blocks 10 and 20 may not be contacted, scratched, collided or attached by foreign objects until the ship (not shown) is completed from the steps of the blocks 10 and 20. Can be applied continuously. However, since the peelable paint is coated on the surfaces 19 and 29, the surface-treated part is protected by a coating film (not shown) formed by the peelable paint, thereby preventing corrosion and scratches. .

4 is a view showing a state in which the coating film formed by the peelable paint is removed after the ship is dried according to an embodiment of the present invention.

Referring to FIG. 4, the worker 71 removes the coating film 53 of the peelable paint attached to the surface of the block C using the aerial platform 70 or the like.

At this time, the coating film 53 can be easily peeled off normally, but when the area of the block C is large, it may be difficult to remove the coating film 53, and the coating film 53 may not be peeled off partially and may remain on the surface of the block C. It may be. The coating film (not shown) which is not peeled off can be removed by a method such as vacuum blasting or grinding.

For reference, in the case of coating the peelable paint too thinly, the adhesive force between the coating film 53 and the surface 55 becomes stronger than the tensile strength of the coating film 53, and when the coating film 53 is pulled out, it may be broken without peeling. have. Therefore, in order to make the coating film 53 peel easily, the coating of a peelable paint can be repeated several times until the coating film 53 becomes an appropriate thickness.

On the other hand, after removing all the coating film formed by the peelable paint attached to the blocks A to H of the ship 50, the welds 51 between the blocks A to H are inspected and repaired, and then surface treatment. do.

At this time, the blocks A to H are protected by a coating film (not shown) formed by a peelable paint, so that only the weld 51 is subjected to a surface treatment of SIS 05 5900-Sa 2 1/2 or more. The outer wall of 50 becomes a state which can coat an ice-resistant paint.

Therefore, since the area to be surface-treated is drastically reduced, dust generated during the surface-treatment is reduced, and thus adverse effects on the environment can be reduced. In particular, the use of vacuum blasting for surface treatment can minimize the generation of dust.

However, during the shipbuilding process, strong scratches or impacts are applied to the surfaces of the blocks A to H during transport and assembly of the blocks A to H, thereby partially damaging the coating film (not shown) formed by the peelable paint. When the surface treated surfaces of the blocks A to H are exposed, damages such as corrosion or scratches may have occurred at the corresponding portions, and thus the surface treatment is performed together with the weld portion 51.

Surface treatment of the weld 51 may be applied to the blasting and grinding corresponding to the SIS 05 5900-Sa 2 1/2 standard.

On the other hand, it usually takes several months to assemble the blocks (A to H) to each other to complete the drying of the vessel (50). Therefore, the coating film (not shown) formed by the peelable paint must be firmly attached to the blocks A to H until the ship 50 is completely dried. Therefore, the peelable paint should have weather resistance, oil resistance, water resistance, daylight resistance, etc., due to the nature of the work site of the shipyard.

As an example of what is currently used as such a peelable coating material, METAL STRIP (brand name) and SEA STRIP (brand name) of Durachemy, Inc., Interseal 121 (brand name) of International company, BK-160 (brand name) of Besco company, etc. are mentioned.

For reference, when the size of the vessel 50 is large, the removal of the coating film 53 and the surface treatment of the welding portion 51 may be simultaneously performed, or the surface treatment of the welding portion 51 may be performed first, followed by the removal of the coating film 53. It is also possible to save time required for the overall surface treatment process of the outer wall of the ship 50 by performing the operation.

FIG. 5 is a view in which an ice-cold paint is collectively coated on a surface of a ship according to an embodiment of the present invention.

As described above, the outer wall of the vessel 50 is subjected to a surface treatment suitable for the coating of the ice-resistant paint, and then the ice-resistant paint is applied. At this time, since the overcoating interval 59 has a characteristic of short overcoating interval, it is difficult to repair it once it is painted on the outer wall of the ship 50, so that it is necessary to paint it collectively to obtain an excellent coating image.

However, since the surface 55 surface treated by blasting or grinding starts to corrode rapidly when exposed to air, the ice-resistant paint should be painted as soon as possible after removing the coating film 53 formed by the peelable paint. .

Therefore, it is also possible to obtain a coating state of excellent quality by using a method in which a plurality of workers (not shown) simultaneously apply the coating of the ice-resistant paint on various parts of the ship 50 for the rapid painting of the ice-resistant paint.

On the other hand, the ice coating 59 may be coated only on the ice inside of the outer wall of the vessel (50). In other words, when the ship 50 is launched from a plurality of blocks A to H, a range corresponding to an ice sheet that directly collides with ice or drift ice is selected, and only the blocks belonging to the site (not shown) are SIS 05. After surface treatment to 5900-Sa 2 1/2 standard or more and coating the peelable paint, after the assembly of the vessel 50 is completed can be painted ice-resistant paint.

Here, since the ice sheet is well known to those skilled in the art, a detailed description of the ice sheet itself will be omitted.

In this case, the time and cost required for the surface treatment to the SIS 05 5900-Sa 2 1/2 specification or more are reduced, the cost and time for painting and peeling off the peelable paint are saved, and the ice-resistant paint is coated. Since the area is also reduced, the construction cost of the ship 50, the time required for construction and resources can be saved.

6 is a flowchart illustrating a method of coating an ice-resistant paint using a peelable paint according to an embodiment of the present invention.

Referring to FIG. 6, the portion of the block (see 10 in FIG. 1 and 20 in FIG. 2) that will form the outer wall submerged portion after the ship (see 50 in FIG. 4) is dried (see FIGS. 19 and 29 in FIG. 3) may be coated with ice. Since is to be painted, the surface (see 19, 29 of Fig. 3) in the block (see 10 of Fig. 1, 20 in Fig. 2) in the state of SIS 05 5900-Sa 2 1/2 specification or more (S10) .

As described above, the surface treated portions of the block (see 10 in FIG. 1, 20 in FIG. 2) can be easily corroded or contaminated, and the process of assembling into the assembly (see 30 in FIG. 3) and the vessel (see FIG. 4). May be damaged during assembly).

In order to prevent this, a peelable paint is coated on the surface-treated part of the block (see 10 of FIG. 1 and 20 of FIG. 2) (S20).

Then, assembling and mounting the blocks (see 10 in FIG. 1, 20 in FIG. 2) and drying the vessel (see 50 in FIG. 4) (S30), the coating film formed by the peelable paint (see 53 in FIG. 4) is removed. Peel and remove (S40).

If the coating film (not shown) by the peelable paint is peeled off and remains without being removed, it is removed by a method such as vacuum blasting or grinding.

After peeling and removing the coating film (see 53 in Fig. 4), inspecting and repairing the welded part (see 51 in Fig. 4) for problems such as poor welding, the SIS 05 5900-Sa 2 1/2 standard The surface treatment is performed using a method such as blasting or grinding (S50).

At this time, the damaged surface of the treated surface (see 55 of Figure 4) is also inspected together. If a damaged part is found, the surface is treated to the SIS 05 5900-Sa 2 1/2 specification or more with the weld (see 51 in FIG. 4). When the surface treatment is finished, the surface of the vessel (see 50 in Fig. 5) is in the state of the surface treatment as a whole more than the SIS 05 5900-Sa 2 1/2 standard, and here the ice-resistant paint is collectively coated (S60, 5, 59.

Thereafter, if necessary, painting work such as antifouling paint may be additionally performed on the vessel (see 50 of FIG. 5).

Although the above description has been given of an anti-glare paint coating method using a peelable paint according to an embodiment of the present invention, the spirit of the present invention is not limited to the embodiments presented herein, those skilled in the art to understand the spirit of the present invention Within the scope of the same idea, other embodiments may be easily proposed by adding, changing, deleting or adding components, but this will also fall within the scope of the present invention.

For example, the present invention has been described using only an ice-resistant paint as an example, but in the case of painting a ship that requires a high level of surface treatment for painting on the ship and the steel sheet forming the outer wall of the ship has a property of easily corroded The present invention can also be applied to and the like.

1 and 2 are perspective views showing blocks

3 is a perspective view showing a state in which four blocks are assembled

Figure 4 is a side view showing a state of removing the peelable paint after ship drying according to an embodiment of the present invention

Figure 5 is a side view showing a state in which the coating of the ice-resistant paint collectively on the outer surface of the vessel according to an embodiment of the present invention

6 is a flow chart showing the operation sequence of the ice-resistant paint using a peelable paint according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10, 20: blocks A to H: blocks

50 vessel 51 welding line

53: peelable paint

Claims (4)

Surface-treating parts corresponding to the outer wall of each of the plurality of blocks; Painting a peelable paint on the surface treated portion; Assembling the plurality of blocks to build a ship; Removing the coating film by the peelable paint; Repairing and surface treating the welded portion of the vessel; And Ice-resistant paint coating method using a peelable paint comprising the step of painting the ice coating on the outer wall of the vessel. The method of claim 1, The surface treatment and the painting of the ice-resistant paint is an ice-resistant paint coating method using a peelable paint, characterized in that is carried out only on the ice of the outer wall of the vessel. The method of claim 1, The surface treatment is ice-resistant paint coating method using a peelable paint, characterized in that the SIS 05 5900-Sa 2 1/2 or more. The method of claim 2, The surface treatment is an ice-resistant paint coating method using a peelable paint, characterized in that performed by blasting or grinding.

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