Ship planking paint spraying method

Abstract

The invention relates to the technical field of ship production, and discloses a ship shell plate paint spraying method which comprises the following steps: cleaning a ship shell plate; according to the production design size of the ship, the maximum waterline is determined on the surface of the ship outer plate; a transition line is arranged above the waterline, and a marking belt is attached to the transition line along the maximum waterline; a first protection belt is attached to the outer portion of the marking belt, and the first protection belt is attached to the outer portion of the ship outer plate; paint spraying work is conducted on the area on the lower portion of the maximum waterline, and after paint is dried, a second protection belt is attached to the outer side again; tearing off the protective belt I and the marking belt on the upper side of the maximum waterline, and spraying paint on an area between the maximum waterline and the transition line; after the sprayed paint is dried, the third protection belt is attached to the outer side again, the first protection belt and the marking belt on the upper side of the transition line are torn open, and paint spraying work is conducted on the upper area of the transition belt; and after spraying is completed, the third protective belt is torn open, and spraying work is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of ship production, and more specifically, to a method for spraying paint on a ship outer plate. Background Art

[0002] The outer plate of a ship is the hull. Painting the outer plate of a ship is not only for beauty, but more importantly, it is to protect the hull from corrosion and improve navigation safety and economy. The salt and humidity in seawater are highly corrosive to metals. The paint coating on the outer plate of a ship can form a protective layer, effectively isolating the direct contact between seawater and the hull, thereby slowing down or preventing the occurrence of corrosion. Extending service life: By spraying special anti-corrosion paint, the service life of the ship can be significantly extended, and the maintenance frequency and cost caused by rust can be reduced. There are two situations for the outer plate of a ship. One part is immersed in seawater for a long time, and the other part is on the sea surface for a long time. In the prior art, different paints are sprayed on these two parts to meet the needs. However, in actual situations, due to the influence of environmental factors such as waves and wind when the ship is sailing on the sea, seawater can easily splash onto the paint coating on the upper side of the ship's hull, which will corrode this part of the paint. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a method for spraying paint on the outer plate of a ship.

[0004] To achieve the above object, the present invention provides the following technical solution: a method for spraying paint on the outer plate of a ship, comprising the following steps:

[0005] Step 1: Clean the outer plate of the ship and keep the surface of the outer plate flat and dry;

[0006] Step 2: According to the production design dimensions of the ship, determine the maximum waterline on the surface of the ship's outer plate;

[0007] Step 3: Set a transition line above the waterline and attach identification tape along the maximum waterline and transition line;

[0008] Step 4: Using the identification tape as a basis, attach the protective tape 1 to the outside of the identification tape, and attach the protective tape 1 to the outside of the ship's outer plate;

[0009] Step 5: Spray paint on the area below the maximum waterline, and after the paint is dry, re-apply the second protective tape on the outside;

[0010] Step 6: Tear off the protective tape 1 and the marking tape on the upper side of the maximum waterline, and spray paint the area between the maximum waterline and the transition line;

[0011] Step 7: After the paint sprayed in step 6 is dry, re-apply the protective tape 3 on the outside, tear off the protective tape 1 and the marking tape on the upper side of the transition line, and spray paint the upper area of ​​the transition tape;

[0012] Step 8. After spraying is completed, tear off the protective tape 3 to complete the spraying work.

[0013] As a preferred technical solution of the present invention, in the step one, the cleaning range is determined, and the outer plate of the hull is initially rinsed using a high-pressure water gun. After rinsing and drying, the cleaned surface is polished with sandpaper to maintain the roughness of the plate surface; finally, the hull is thoroughly rinsed again using a high-pressure water gun and dried naturally.

[0014] As a preferred technical solution of the present invention, in the step 2, the waterline parameters of the ship are determined according to the design drawings or technical specifications of the ship, the draft depth is calculated, and the maximum waterline is determined.

[0015] As a preferred technical solution of the present invention, the waterline parameters include but are not limited to the displacement, width and depth of the ship.

[0016] As a preferred technical solution of the present invention, in the step three, the transition line is set 35cm to 45cm above the waterline, the identification tape is made of a strip material with a significant indicator color, adhesive is provided on one side of the identification tape, and the identification tape is adhered to the outer plate of the ship by the adhesive; the width of the identification tape is 15mm to 20mm, and the lower edge of the identification tape is aligned with the upper edge of the maximum waterline or the transition line.

[0017] As a preferred technical solution of the present invention, in step four, one side of the protective tape is provided with adhesive, and the protective tape is adhered to the outer plate of the ship by the adhesive; the lower edge of the protective tape and the lower edge of the identification tape are aligned with each other, and the protective tape completely covers the identification tape; the width of the protective tape is 1.8m to 2.5m.

[0018] As a preferred technical solution of the present invention, in the step five, the area below the maximum waterline is divided into several spraying areas in the longitudinal direction, and each spraying area is sprayed in turn; the size specification of the protective band two is the same as that of the protective band one, and the upper edge of the protective band two is kept flush with the upper edge of the paint area in step five.

[0019] As a preferred technical solution of the present invention, in step six, the area between the maximum waterline and the transition line is divided into several spraying areas in the longitudinal direction, and the spraying work is performed on each spraying area in turn.

[0020] As a preferred technical solution of the present invention, in step seven, the size specification of the protective band three is the same as that of the protective band one, and the upper edge of the protective band three is kept flush with the upper edge of the paint area in step six; then the upper area of ​​the transition band is divided into several spraying areas in the longitudinal direction, and each spraying area is sprayed in turn.

[0021] As a preferred technical solution of the present invention, the area below the maximum waterline, the area between the maximum waterline and the transition line, and the area above the transition line are sprayed with paints of different colors.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adds a transition coating between the traditional two layers of paint coating. This partial coating plays the role of transition between the two layers of coating and also has the ability to resist seawater corrosion. During use, it is used to deal with the splashing of waves, reduce the pollution and corrosion of the upper paint coating, extend the service life of the upper paint coating, and save maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a flow chart of the steps of the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1 As shown, any one embodiment of the present invention is described for further explanation:

[0026] A method for spraying paint on a ship's outer plate comprises the following steps:

[0027] Step 1: Clean the outer plate of the ship and keep the surface of the outer plate flat and dry; determine the cleaning range, use a high-pressure water gun to initially rinse the outer plate of the hull, and after rinsing and drying, use sandpaper to polish the cleaned surface to maintain the roughness of the plate surface; finally, use a high-pressure water gun again to thoroughly rinse the hull and dry it naturally.

[0028] Ensure the cleanliness of the hull plate, ensure that the surface is free of oil, dust and other impurities, grind to ensure uniform adhesion of the coating, and dry the plate to avoid moisture residue affecting the coating quality.

[0029] Step 2: According to the production design dimensions of the ship, determine the maximum waterline on the surface of the ship's outer plate;

[0030] Determine the ship's waterline parameters according to the ship's design drawings or technical specifications, calculate the draft depth, and determine the maximum waterline. The waterline parameters include but are not limited to the ship's displacement, molded breadth, and molded depth.

[0031] Step 3: Set a transition line above the waterline and attach identification tape along the maximum waterline and transition line;

[0032] The transition line is set 35cm to 45cm above the waterline. The marking tape is made of a strip material with a prominent indicator color. Adhesive is set on one side of the marking tape. The marking tape is attached to the outer plate of the ship through the adhesive. The width of the marking tape is 15mm to 20mm. The lower edge of the marking tape is aligned with the upper edge of the maximum waterline or transition line. The marking tape will serve as a reference line for subsequent painting work.

[0033] Step 4: Using the identification tape as a basis, attach the protective tape 1 to the outside of the identification tape, and attach the protective tape 1 to the outside of the ship's outer plate;

[0034] One side of the protective tape is provided with adhesive, and the protective tape is attached to the outer plate of the ship by the adhesive; the lower edge of the protective tape is aligned with the lower edge of the identification tape, and the protective tape completely covers the identification tape; the width of the protective tape is 1.8m to 2.5m. The protective tape plays a protective role during the painting process to prevent the painting of one area from affecting other areas.

[0035] Step 5: Spray paint on the area below the maximum waterline, and after the paint is dry, re-apply the second protective tape on the outside;

[0036] The area below the maximum waterline is divided into several spraying areas in the longitudinal direction, and each spraying area is sprayed in turn; the size of the second protective belt is the same as that of the first protective belt, and the upper edge of the second protective belt is kept flush with the upper edge of the sprayed area in step 5. Artificial division of multiple areas for work can enable different areas to be worked on separately, effectively improving work efficiency; the lowest area is sprayed with paint first, and the second protective belt can protect the already sprayed paint coating during subsequent work.

[0037] Step 6: Tear off the protective tape 1 and the marking tape on the upper side of the maximum waterline, and spray paint the area between the maximum waterline and the transition line;

[0038] Divide the area between the maximum waterline and the transition line into several spraying areas in the longitudinal direction, and spray each spraying area in turn. Spray the transition area in the middle, and use the coating in this area to protect the upper paint layer.

[0039] Step 7: After the paint sprayed in step 6 is dry, re-apply the protective tape 3 on the outside, tear off the protective tape 1 and the marking tape on the upper side of the transition line, and spray paint the upper area of ​​the transition tape;

[0040] The size specification of protective strip three is the same as that of protective strip one, and the upper edge of protective strip three is kept flush with the upper edge of the area sprayed with paint in step six; then the upper area of ​​the transition strip is divided into several spraying areas in the longitudinal direction, and each spraying area is sprayed in turn.

[0041] Step 8. After spraying is completed, tear off the protective tape 3 to complete the spraying work.

[0042] The area below the maximum waterline, the area between the maximum waterline and the transition line, and the area above the transition line are sprayed with paints of different colors. Different colors can indicate the difference between different paint layers, making it easy to distinguish.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for spraying paint on the outer plate of a ship, characterized in that: The steps include: Step 1: Clean the outer plate of the ship and keep the surface of the outer plate flat and dry; Step 2: According to the production design dimensions of the ship, determine the maximum waterline on the surface of the ship's outer plate; Step 3: Set a transition line above the waterline and attach identification tape along the maximum waterline and transition line; Step 4: Using the identification tape as a basis, attach the protective tape 1 to the outside of the identification tape, and attach the protective tape 1 to the outside of the ship's outer plate; Step 5: Spray paint on the area below the maximum waterline, and after the paint is dry, re-apply the second protective tape on the outside; Step 6: Tear off the protective tape 1 and the marking tape on the upper side of the maximum waterline, and spray paint the area between the maximum waterline and the transition line; Step 7: After the paint sprayed in step 6 is dry, re-apply the protective tape 3 on the outside, tear off the protective tape 1 and the marking tape on the upper side of the transition line, and spray paint the upper area of ​​the transition tape; Step 8. After spraying is completed, tear off the protective tape 3 to complete the spraying work.

2. A method for spraying paint on outer plates of a ship according to claim 1, characterized in that: In the step 1, the cleaning range is determined, and the outer plate of the hull is initially rinsed with a high-pressure water gun. After rinsing and drying, the cleaned surface is polished with sandpaper to maintain the roughness of the plate surface; finally, the hull is thoroughly rinsed with a high-pressure water gun again and dried naturally.

3. A method for spraying paint on outer plates of a ship according to claim 1, characterized in that: In the step 2, the waterline parameters of the ship are determined according to the design drawings or technical specifications of the ship, the draft depth is calculated, and the maximum waterline is determined.

4. A method for spraying paint on outer plates of a ship according to claim 3, characterized in that: The waterline parameters include but are not limited to the displacement, width and depth of the ship.

5. A method for spraying paint on ship outer plates according to claim 1, characterized in that: In the step three, the transition line is set 35cm to 45cm above the waterline, the identification tape is made of a strip material with a prominent indicating color, adhesive is provided on one side of the identification tape, and the identification tape is adhered to the outer plate of the ship by the adhesive; the width of the identification tape is 15mm to 20mm, and the lower edge of the identification tape is aligned with the upper edge of the maximum waterline or the transition line.

6. A method for spraying paint on ship outer plates according to claim 1, characterized in that: In step 4, one side of the protective tape is provided with adhesive, and the protective tape is adhered to the outer plate of the ship by the adhesive; the lower edge of the protective tape is aligned with the lower edge of the identification tape, and the protective tape completely covers the identification tape; the width of the protective tape is 1.8m to 2.5m.

7. A method for spraying paint on ship outer plates according to claim 1, characterized in that: In the step five, the area below the maximum waterline is divided into several spraying areas in the longitudinal direction, and each spraying area is sprayed in turn; the size specification of the protective band two is the same as that of the protective band one, and the upper edge of the protective band two is kept flush with the upper edge of the area sprayed in step five.

8. A method for spraying paint on ship outer plates according to claim 1, characterized in that: In the step six, the area between the maximum waterline and the transition line is divided into a plurality of spraying areas in the longitudinal direction, and each spraying area is sprayed in turn.

9. A method for spraying paint on outer plates of a ship according to claim 1, characterized in that: In step seven, the size specification of protective band three is the same as that of protective band one, and the upper edge of protective band three is kept flush with the upper edge of the paint area in step six; then the upper area of ​​the transition band is divided into several spraying areas in the longitudinal direction, and each spraying area is sprayed in turn.

10. A method for spraying paint on ship outer plates according to claim 1, characterized in that: The area below the maximum waterline, the area between the maximum waterline and the transition line, and the area above the transition line are sprayed with paints of different colors.

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