KR100809532B1 - Protection method of out hull area for ice going and breaking vessel - Google Patents

Abstract

A protecting method of an out hull area for an icebreaker is provided to enhance convenience, stability, and productivity of a work by using after adhering and welding a protecting member. A protecting method of an out hull area for an icebreaker includes the steps of: performing a surface treatment on the out hull area of the icebreaker(S200); applying adhesives on the surface-treated icebreaker(S210); adhering a protecting member on the applied adhesives(S220); welding to couple the adhered protecting member with the out hull area(S230); and further performing overlap welding on the welded protecting member to more firmly couple the welded protecting member with the out hull area(S240). A double-sided adhesive tape alternates the adhesives at the second step.

Description

Protection method of out hull area for Ice going and breaking vessel

1 is a conceptual diagram illustrating a method for protecting a flooded portion of an ice vessel operating vessel according to the prior art.

Figure 2 is a flow chart illustrating a first embodiment of the method of protecting the flooded portion of the ship operating in the sea ice zone according to the present invention.

FIG. 3 is a conceptual view illustrating an adhesive applying step S210 and a protecting member attaching step S220 in the embodiment shown in FIG. 2.

FIG. 4 is a conceptual view illustrating the welding step S230 in the embodiment shown in FIG. 2.

FIG. 5 is a conceptual view illustrating a step S240 of performing overlap welding in the embodiment shown in FIG. 2.

Figure 6 is a flow chart showing a second embodiment of the method of protecting the submerged part of the ship operating the sea ice according to the present invention.

7 is a flowchart illustrating a third embodiment of the method for protecting the flooded portion of the ship operating in the ice sea area according to the present invention.

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

100: submerged part 110: double-sided adhesive tape

120: protection member 130: laser welding machine

The present invention relates to a method for protecting the outer wall submerged portion of a ship operating in an ice sea area, and more particularly, to protect the ship from drift ice without applying a paint having many restrictions in application. The invention relates to a method of protecting flooded areas of a ship operating in an ice sea area using a method of attaching a protective member having ice resistance and ice-breaking capacity to a flooded part of an outer wall of a ship.

In general, ships that operate in ice zones are subject to erosion or friction from ice floes. Drift ice refers to a mass of ice drifting on the sea without settling on the shore due to wind or ocean currents.

The freezing point of this ice floe is determined by the salt content, which is about 2 ° C in the average seawater with 34% salt content. Thus, there is a year-round drift ice in low-sea ice areas.

As such, the drift ice has a relatively wider temperature distribution in the cold sea area than the equatorial or mid-latitude areas, which causes a lot of damage to the ships operating in the sea area.

For this reason, ships operating in ice zones, although they do not have their own icebreaking capacity, are required to have ice or icebreaking capacity to withstand resistance to drift ice in order to navigate in relatively thin frozen waters or in already formed waterways.

Therefore, the outer wall of the hull of the ice-covered ship as well as the icebreaking ship, ie the icebreaker, is expected to collide with the drift ice at the part of the draft line in contact with the sea surface, so it must be made of more rigid material and thickness. In addition, the hull outer wall of these vessels requires a separate outer wall submerged portion protection means to exhibit the ice- and ice-breaking performance for drift ice.

In order to operate the ice sea area, it is necessary to have an ice structure that can withstand the collision with drift ice or to have icebreaking ability that can crush it.

Conventionally, by painting a paint such as ice resistant paint on the outer wall submerged part of the ship as a means of protecting the outer wall submerged part of the ship, the outer wall submerged part of the ship is prevented from being eroded or damaged by friction.

1 is a side view showing a vessel to which the paint is applied to the hull outer wall immersion site according to the prior art. Ice-resistance paint 10 is coated on the part flooded in the ship (1) operating the ice sea area. Because of this, the friction coefficient in the collision with the drift ice is reduced at the immersion part of the outer wall of the ship 1, which is expected to come into contact with the drift ice or ice sheet, and thus the outer wall of the ship 1 from the drift ice. It was effective in preventing it from being eroded.

However, there are various constraints on the painting of ice-resistant paint. First, due to the nature of the paint, it is difficult to paint and dry after painting under 10 ℃. Second, it is impossible to paint during the winter season. About 20min / 20), so it is difficult to paint in the summer, and the third overcoating interval (about 6H / 25) is short, which makes it difficult to repair and the fourth layer is hard, so the feathering of the weld joint (Feathering) Difficult work

Due to various constraints in the application of paints above, there are no examples in which large shipyards have applied paint to the outer wall flooding part of the ship as a whole.However, some shipyards apply the paint only to local areas or divide it with other paints. Efforts have been made to overcome some of the constraints on the use of the paint by means of application.

Accordingly, there has been a need for a method for protecting a ship's outer wall submerged portion that can effectively reduce the erosion and friction that may occur between the hull outer wall submerged portion and the collided drift ice in a ship operating an ice sea area.

In the present invention, in order to overcome the problems of the prior art as described above, it is possible to effectively reduce the erosion and friction that may occur due to the collision with drift ice or ice in a ship operating an ice sea area, thereby It is a technical task to provide a method of protecting flooded areas of an ice-sea vessel that can reduce the fuel required and improve the vessel's operational efficiency.

In order to achieve the above technical problem, the first embodiment of the method for protecting the submerged part of the ship operating the ice sea area according to the present invention is a surface treatment step of performing a surface treatment on the outer wall submerged part of the vessel; An adhesive coating step of applying an adhesive to the submerged part after surface treatment; A protective member attaching step of attaching a protective member on the applied adhesive; And a welding step of performing welding for joining the protection member and the submerged portion to which the attached protection member is attached.

In this case, the surface treatment step may be used in combination with at least one of blasting, grinding, water jet method.

Preferably, the adhesive may use a urethane or epoxy-based adhesive.

In addition, the double-sided adhesive tape may be used without applying the adhesive to the submerged part in the adhesive applying step.

In addition, in the welding step, it is preferable to further perform overlap welding at appropriate intervals on the protective member so that the protective member welded to the submerged portion is more firmly attached. As a result, the protection member may be more resistant to erosion, abrasion, and breakage.

In the adhesive applying step and the protective member attaching step, the adhesive and the protective member may be stacked to form two or more layers of protective members.

In addition, a second embodiment of the method for protecting the submerged part of the ice vessel operating vessel according to the present invention includes a surface treatment step of performing a surface treatment on the outer wall submerged part of the vessel; An overlap welding step of overlap welding a protective member at appropriate intervals to the submerged part after surface treatment; And an overlap welding step of overlap welding the protective member and the submerged portion that are overlap welded.

In addition, a third embodiment of the method for protecting the submerged part of the ice vessel operating vessel according to the present invention includes a surface treatment step of performing a surface treatment on the outer wall submerged part of the vessel; An adhesive coating step of applying an adhesive to the submerged part after surface treatment; And a protective member attaching step of attaching a protective member on the applied adhesive.

In the third embodiment, the protective member attaching step may further include an adhesive sealing treatment step of sealing the submerged portion and the protective member with the adhesive after attaching the protective member. . This is to perform additional sealing in consideration of attaching the protective member to the submerged part using only an adhesive.

In the third embodiment, the adhesive is preferably an urethane or epoxy-based adhesive.

In addition, in the adhesive applying step of the third embodiment, it is preferable to use the double-sided adhesive tape instead of applying the adhesive.

In addition, in the adhesive applying step and the protective member attaching step of the third embodiment, it is preferable to alternately stack the adhesive and the protective member to form two or more protective members.

In the second embodiment or the third embodiment, the surface treatment step may be used in combination of at least one or more of blasting, grinding, water jet method.

At this time, the protective member preferably has the thickest shape in the bow portion or rudder.

Hereinafter, preferred embodiments of the present invention will be described. In the drawings, Figure 2 is a flow chart showing a first embodiment of the method of protecting the submerged part of the ship operating the sea ice according to the present invention, Figure 3 is an adhesive coating step (S210) and the protective member in the embodiment shown in FIG. 4 is a conceptual view illustrating the attaching step S220, and FIG. 4 is a conceptual view illustrating the welding step S230 in the embodiment illustrated in FIG. 2, and FIG. 5 is an exemplary embodiment shown in FIG. 2. FIG. 6 is a conceptual diagram illustrating an operation of performing overlap welding (S240), FIG. 6 is a flowchart illustrating a second embodiment of a method for protecting a submerged portion of an ice vessel operating vessel according to the present invention, and FIG. 3 is a flowchart illustrating a third embodiment of a method for protecting a flooded portion of a vessel operating in an ice sea area according to the present invention.

With reference to Figures 2 to 7, it will be described a preferred embodiment of the method for protecting the submerged part of the ship operating the ice sea area according to the present invention.

First embodiment

First, referring to Figures 2 to 5, the outer wall submerged site protection method of the ice ship operating vessel according to the present invention first includes a surface treatment step (S200) for performing a surface treatment on the submerged site. The reason for performing the surface treatment is to allow the protection member 120 to be more attached to the submerged part 100 in a later step. In the surface treatment step (S200), the submerged part 100 is cleaned, which is a job of removing dust or dirt that may exist in the submerged part 100. And the surface of the submerged portion 100 is blasted (Blasting). Such blasting may be applied in a grinding operation or a water jet operation in which water is sprayed at a high speed to remove oxide scale or rust.

Next, the adhesive treatment step (S210) for applying an adhesive to the submerged portion of the surface treatment is finished by the surface treatment step (S200). In this case, as the adhesive, a urethane / epoxy-based adhesive may be used. In this embodiment, a double-sided adhesive tape 110 is used that is easy to use. The double-sided adhesive tape 110 is excellent in the sealing (sealing) effect against moisture or solvents, good for UV resistance and thermal shock, excellent absorption of external impact, and particularly has a low temperature heat deformation. Double-sided adhesive tapes are particularly applicable to the flooded areas of ships due to their excellent filling performance and flexibility for pores. However, since the welding may not be performed smoothly in the portion to which the adhesive or the double-sided tape 110 is applied, the adhesive or the double-sided tape may be partially applied to the entire area, that is, the portion where the welding will not be performed. Preferably, 110 is applied.

Next, a protective member attaching step (S220) of attaching a protective member having an ice-breaking and ice-breaking performance on the adhesive applied by the adhesive applying step (S210) is performed. In this embodiment, a stainless steel (SUS 316L or similar alloy) material is used as a protective member 120 having excellent performance to withstand during ice- and ice-breaking with respect to drift ice or polar ice sheets. At this time, when the protective member 120 has a material of stainless steel, it is preferable to have a thickness of any one of 0.25mm ~ 0.5mm. However, unlike the present embodiment, the protection member 120 may be made of any one of other metals, inorganic materials, and organic materials. However, the protection member 120 may be formed of any material within a range of about 0.1 mm to 3 mm. It is good to have one thickness. That is, the thickness of the protective member 120 can be changed and applied according to the material or shape, as long as it can satisfy the same or better performance than Ice Resistant Paint used in the prior art. (For reference, the paint thickness of the ice resistance paint was 0.5mm or more.)

Since the ice vessel operating ship frequently collides with the drift ice or the ice sheet, the protective member 120 is susceptible to damage due to breakage or wear caused by the collision. Therefore, the protective member 120 may be repeatedly formed by alternately stacking the double-sided tape 110 with two or more protective members.

In addition, the protection member 120 preferably has the thickest shape at the site (e.g. bow, rudder, etc.) severely collided with drift ice or ice among the flooded portion of the outer wall of the ship.

Next, a welding step (S230) is performed to perform welding to join the protection member and the submerged portion attached.

At this time, the welding step (S230) it is preferable to use laser welding (Laser Beam Welding) or plasma welding (Plasma Welding). In this embodiment, laser welding is used. Such laser welding is generally a technique well known in the welding industry. Briefly described, one of welding methods in which a high density laser light source is used to apply intensive energy to a welding part, directly melts the base material, and joins the molten base material by welding Form. By using such laser welding, less energy is required than other welding, and the heat affected part is small, so that the plastic deformation of the peripheral member can be greatly reduced, and a clean welding surface can be obtained.

Referring to FIG. 4, the protection member 120 attached to the submerged portion 100 of the ice vessel operating vessel 100 by the double-sided adhesive tape 110 is overlapped by the laser welder 130. A melt 124 is formed along the boundary line between the 120 and the submerged portion 100, and the welding is performed in a watertight manner so that seawater does not penetrate the inner attachment surface.

In this case, overlap welding may be additionally performed at appropriate intervals so that the protection member 120 and the submerged portion 100 may be more firmly bonded. This is called an overlap welding step (S240).

The overlap welding is formed in the vertical direction at appropriate intervals on the non-bonded surface of the protective member 120 bonded to the submerged portion 100, vertical melting line 126 in a portion of the protective member 120 This is generated and partially bonded to the submerged portion 100. By this overlap welding, the protection member 100 joined to the submerged part 100 may be more firmly bonded.

In the submerged part 100 where the impact load due to the collision with drift ice or ice is greatly generated (for example, bow part, rudder, etc.), the protection member 120 may be the most compact to prevent damage or fall. The vertical melting line 126 is formed at intervals, and the vertical melting line 126 is formed at relatively wide intervals in areas where the number of collisions or impact loads are not large, thereby improving economic efficiency and working hours (M / H). It can be adjusted effectively.

2nd Example

6 is a flowchart showing a second embodiment of the present invention.

Referring to FIG. 6, the second embodiment first performs a surface treatment step (S300) of performing a surface treatment on a submerged portion of an outer wall of a vessel. Since the surface treatment step S300 of the second embodiment is the same as the surface treatment step S200 of the first embodiment described with reference to FIG. 2, further description will be omitted.

Next, the second embodiment performs an overlap welding step (S310) of overlap welding the protective member at appropriate intervals on the submerged portion after the surface treatment. The overlap welding step S310 of the second embodiment may be the same as the overlap welding step S240 of the first embodiment described with reference to FIG. 2 in terms of its working form and method, but the objective and effective aspects may be different from each other. Part exists. That is, the overlap welding step (S240) of the first embodiment is performed in the nature of the finishing work after performing the overlap welding (S230) for a more firm coupling of the submerged portion 100 and the protective member 120, The overlap welding step (S310) in the second embodiment is performed for the purpose of temporary fixing work and firm coupling of the submerged part 100 and the protective member 120.

Finally, the second embodiment performs an overlap welding step (S320) of overlapping welding the protective member and the submerged portion welded overlap. The protective member 120 temporarily attached to the submersion member 100 by the previous overlap welding step (S310) may be sealed (sealed) by the overlap welding step (S320) can be more firmly attached.

Third embodiment

Next, Fig. 7 is a flowchart showing a third embodiment of the present invention.

Referring to FIG. 7, the third embodiment first performs a surface treatment step (S400) for performing a surface treatment on the outer wall submerged portion of the vessel. Since the surface treatment step S400 of the third embodiment is the same as the surface treatment step S200 of the first embodiment or the surface treatment step S300 of the second embodiment described in FIG. .

Next, the third embodiment performs an adhesive coating step (S410) for applying an adhesive to the submerged portion of the surface treatment. Adhesive application step (S410) of the third embodiment is the same as the adhesive application step (S210) of the first embodiment described in FIG. However, in the adhesive application step (S210) of the first embodiment, the adhesive is not entirely applied in consideration of overlap welding or overlap welding to be performed later. However, in the adhesive applying step S410 of the third embodiment, since overlap welding or overlap welding does not need to be performed, it is preferable that the adhesive is applied to the entire surface.

Next, the third embodiment performs a protective member attaching step (S420) for attaching a protective member on the adhesive applied. Protective member attaching step (S420) of the third embodiment is the same as the protective member attaching step (S220) of the first embodiment described in FIG. However, in the third embodiment, unlike the first embodiment, since no separate welding operation is performed, an adhesive sealing step of sealing the immersion part 100 and the protective member 120 with an adhesive is performed. It is preferable to carry out more.

In the above description of the method of protecting the flooded portion of the ship operating the sea ice according to the present invention. Such a technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the following claims rather than the foregoing description, and the meanings of the claims and All changes or modifications derived from the scope and the equivalent concept should be construed as being included in the scope of the present invention.

According to the method of protecting the flooded portion of the ice vessel operating vessel according to the present invention, there is an effect that can overcome the disadvantages of the conventional ice resistance paint used. That is, it is difficult to dry after painting and painting, so it is impossible to perform painting in winter. Secondly, it is difficult to paint in summer due to short pot life of paint. Third, the short overcoating interval makes it difficult to repair. Fourth, the present invention can overcome the disadvantage that the hard coating of the welding seam difficult to coat.

In addition, according to the method of protecting the submerged part of the ship operating in the ice sea area according to the present invention, by adhering the protective member having the same or similar function as the ice resistance paint and welding and bonding it, thereby improving the convenience and stability and productivity of the work It can be effected.

In addition, according to the method of protecting the submerged portion of the ice vessel operating vessel according to the present invention, by applying a protection member that can be attached to the durable and long-term use compared to the conventional ice resistance paint, the outer wall flooded portion of the vessel from collision with drift ice or ice sheet It can be stably protected, and as a result, the side effect of improving the operational efficiency of the ship is also obtained.

Claims (10)

As a method of protecting flooded areas of ships operating in sea ice, A surface treatment step of performing a surface treatment on the outer wall submerged portion of the vessel; An adhesive coating step of applying an adhesive to the submerged part after surface treatment; A protective member attaching step of attaching a protective member on the applied adhesive; And And a welding step of performing welding for joining the protection member and the submerged part to which the attached member is attached. In the adhesive coating step, the adhesive is not applied to the submerged portion, characterized in that replaced by a double-sided adhesive tape How to protect flooded areas of vessels operating in the sea ice. The method of claim 1, In the welding step, In order to more firmly bond the protective member welded to the submerged portion, it characterized in that the overlap welding is further performed at an appropriate interval on the protective member How to protect flooded areas of vessels operating in the sea ice. As a method of protecting flooded areas of ships operating in sea ice, A surface treatment step of performing a surface treatment on the outer wall submerged portion of the vessel; An overlap welding step of overlap welding a protective member at appropriate intervals to the submerged part after surface treatment; And an overlap welding step of overlap welding between the protective member and the submerged portion that are overlap welded. How to protect flooded areas of vessels operating in the sea ice. As a method of protecting flooded areas of ships operating in sea ice, A surface treatment step of performing a surface treatment on the outer wall submerged portion of the vessel; An adhesive coating step of applying an adhesive to the submerged part after surface treatment; A protective member attaching step of attaching a protective member on the applied adhesive; In the adhesive coating step, the adhesive is not applied to the submerged portion, characterized in that replaced by a double-sided adhesive tape How to protect flooded areas of vessels operating in the sea ice. The method of claim 4, wherein Attaching the protective member, After the attachment of the protective member, characterized in that it further comprises an adhesive sealing treatment step of sealing the sealing between the submerged portion and the protective member with the adhesive (Sealing) How to protect flooded areas of vessels operating in the sea ice. The method according to any one of claims 1, 3 and 4, The surface treatment step, At least one combination of blasting, grinding, water jet method is used in combination How to protect flooded areas of vessels operating in the sea ice. The method according to any one of claims 1, 3 and 4, The protection member is a method for protecting the submerged portion of the ice vessel operating vessel characterized in that it has the thickest shape in the bow or rudder. The method according to claim 1 or 4, The adhesive is characterized in that the adhesive of the urethane or epoxy series How to protect flooded areas of vessels operating in the sea ice. delete The method according to claim 1 or 4, In the adhesive applying step and the protective member attaching step, Alternately stacking the adhesive and the protection member to form two or more protection members. How to protect flooded areas of vessels operating in the sea ice.

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