JP2002159912A - Method for applying zinc based coating material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for applying a zinc based coating material by which the generation of dust is suppressed and excellent finishing is attained. SOLUTION: The method for applying the zinc based coating material is composed of a 1st process for assembling stages 71, 72,..., 78 to coat surface-to- coated 51, 52,..., 60 formed by dividing a surface-to-be-coated 5, a 2nd process for covering a boundary between the stages 71, 72,..., 78 and the surface-to-be- coated 51, 52,..., 59 or 60 with a sheet, and a 3rd process for performing the coating successively from the upper stage 71 to the lower stages by the method for applying the zinc based coating material on the surface-to-be-coated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for coating a surface to be coated with a zinc-based paint, and more particularly to a method for coating a zinc-based paint in which paint dust generated during coating is reduced.

[0002]

2. Description of the Related Art This kind of coating method of a zinc-based paint has been often used for painting a surface to be coated (wall surface) of a tank of a dedicated tanker. FIG. 6 is a diagram for explaining a conventional method of applying a zinc-based paint. In FIG. 6, reference numeral 110 denotes a ship, and the ship 110 has a tank 130.
Is provided. Conventionally, the inner wall (coated surface) 150 of the tank 130 is coated as follows.

[0003] In the coating of this type of zinc-based paint, the solvent may have a bad influence on the worker's body.
Are divided into predetermined areas so that painting can be performed effectively, and scaffolds 171, 172,... 178 capable of painting the divided painted surfaces 151, 152,. Next, the lowermost coated surface (tank top) 151
And then the slope 152 and then the scaffold 17
2 to be painted on the surface to be painted 153, and finally, the uppermost surface to be painted on the scaffold 178 (the underside of the upper deck)
Since the solvent tends to stagnate in the lower part of the coating area, such as when coating 160, it is general to take an operation step of sequentially coating from the bottom to the top in order to avoid the influence. Was.

[0004]

However, in the above-mentioned conventional method of applying a zinc-based paint, the painting of the surface to be coated of a certain scaffold is completed, and the painting surface of the scaffold one level above is painted. Dust is generated during the process, the dust falls by weight and adheres to the dry coating surface of the surface to be coated of the lower scaffold, and the coated surface of the lower scaffold has a pear skin-like disadvantage. there were. SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks and to provide a method for coating a zinc-based paint having a good finish while suppressing generation of dust.

[0005]

According to a first aspect of the present invention, there is provided a method for coating a zinc-based paint, comprising the steps of: A first step of assembling a scaffold capable of coating the divided surface to be coated, a second step of curing the scaffold and the surface to be coated with a sheet, and coating the lower scaffold sequentially from the upper scaffold. And a third step of performing the following. According to a second aspect of the present invention, in the method for coating a zinc-based paint according to the first aspect, the third step is performed by applying a surface to be coated on the scaffold from an upper surface to a lower surface. It is characterized by being. According to a third aspect of the present invention, in the method for coating a zinc-based paint according to the first aspect, the sheet on the scaffold is removed when the painting of the surface to be painted on the scaffold is completed. It is. In the invention according to claim 4, claim 1 is
In the method for coating a zinc-based paint described above, the third step is characterized in that, when coating with a spray gun, the coating is performed while maintaining a predetermined distance between the surface to be coated and the spray gun. Things.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram for explaining a method of applying a zinc-based paint according to an embodiment of the present invention. FIG. 2 is a diagram for explaining a curing method used in the method of applying the zinc-based paint. In these figures, ship 1
Is provided with a tank 3. The inner wall (surface to be coated) 5 of the tank 3 is coated by the zinc-based coating method according to the embodiment of the present invention. Hereinafter, specific examples of the method for applying a zinc-based paint according to the embodiment of the present invention will be described below.

First, as shown in FIG. 1, the inner wall (surface to be coated)
5 is divided into, for example, 10 regions so as to be easily painted.
That is, the slope 51, the tank top 52, the upper deck back surface 5
3, side wall surface 54, side wall surface 55, side wall surface 56, side wall surface 5
7, the side wall surface 58, the side wall surface 59, and the side wall surface 60.

Next, of the surfaces to be coated which are classified as described above, the upper deck back surface 53, the side wall surface 54, the side wall surface 55, the side wall surface 56, the side wall surface 57, the side wall surface 58, the side wall surface 59 and the side wall surface 60 are formed. Assemble the scaffold 7 that enables painting of each area. That is, the scaffold 7 that enables the upper deck back surface 53 to be painted.
1, a scaffold 72 whose wall surface 54 can be painted, a scaffold 72 whose wall surface 55 can be painted, a scaffold 72 whose wall surface 56 can be painted, and a scaffold 72 whose wall surface 57 can be painted. A scaffold 72 that allows the side wall surface 58 to be painted, a scaffold 72 that allows the side wall surface 59 to be painted, and a scaffold 72 that allows the side wall surface 60 to be painted. The above is the first step.

Using these scaffolds 71, 72,..., 78, the primary rust-proof coating is removed from the upper deck back surface 53 and the side wall surfaces 54, 55,. Similarly, the primary rust preventive paint on the slope 51 and the tank top 52 is peeled off. Next, in the second step, the boundary between the scaffold 72 and the wall surfaces 54 and 55, the boundary between the scaffold 73 and the wall surfaces 55 and 56, ..., the scaffold 78 and the wall surface 60, and the slope 51
Curing is carried out by the curing vinyl sheet 9 at the border of. In FIG. 2, the curing between the scaffold 75 and the boundary between the wall surfaces 57 and 58 and the boundary between the scaffold 76 and the wall surfaces 58 and 59 are shown by way of example using the curing vinyl sheet 9 for curing.

[0010] First, the slope 51 is painted in the direction of the arrow (S1), and then the tank top 52 is painted in the direction of the arrow (S2). Thereafter, a third step is entered. First, the upper deck back surface 73 is painted on the scaffold 71 in the direction of the arrow (S3), and thereafter the wall surface 54 is painted on the scaffold 72 in the direction of the arrow (S4). ), The wall surface 55 is painted on the scaffold 73 in the direction of the arrow (S5), and the wall surface 56 is painted on the scaffold 74 in the direction of the arrow (S6).
The wall surface 57 is painted in the direction of the arrow on the ceiling (S7), and the wall surface 58 is painted in the direction of the arrow on the scaffold 76 (S7).
8) The wall surface 59 is painted on the scaffold 77 in the direction of the arrow (S9), and the wall surface 60 is painted on the scaffold 78 in the direction of the arrow (S10). In this way, the coating is sequentially performed from the upper scaffold to the lower scaffold.

When painting on the scaffolds 71, 72,..., 78, the wall surfaces to be painted on the scaffolds 71, 72,.
For 9 or 60, it is preferable to apply the paint so that the paint is applied from the upper surface to the lower surface.

Further, in the above coating method, the scaffold 7
, 77 or 78, the cured vinyl sheet on the scaffolds 71, 72,..., 77 or 78 at the time when the coating of the wall surfaces (surfaces to be coated) 54, 55,. 9 is removed.

Further, in the above-mentioned coating method, when the zinc-based paint is applied by a spray gun, the slope 51, the tank top 52, the upper deck back surface 53, the wall surfaces 54, 5
It is necessary to perform the coating while keeping the distance between the surface to be coated such as 5,..., 59 or 60 and the spray gun at a predetermined distance. Here, the predetermined distance between the surface to be coated and the spray gun is optimally about 30 to 40 cm.

According to the method for coating a zinc-based paint according to the embodiment of the present invention described above, there are the following advantages. (1) Since the coating is performed sequentially from the top to the bottom, a painted surface having a good finish can be obtained without forming a pear-skinned painted surface. (2) Generation of dust during coating can be suppressed. In the above-described embodiment, an example in which the inside of the tank 3 of the marine vessel 1 is painted has been described. However, the present invention is not limited to this, and it goes without saying that the present invention can be applied to the inside and outside of the marine vessel 1 to be painted.

[0015]

Next, an example in which the zinc-based paint according to the embodiment of the present invention is applied by a coating method will be described. (1) Measurement location: "Shinkurushima Doktsu Co., Ltd.", (2) Measurement date: June 15, 2000, (3) Ship type: PC
/ 18,200DWT, (4) Painting specification; CALBON
S-HB 75 μ × 1 time, (5) Measuring instrument; Roughness meter (BSRA HULL ROUGHNESS ANAL)
YSER), a coating film obtained by coating a port (P-SIDE) outer plate, a BHD, and a floor surface with the zinc-based paint coating method according to the embodiment of the present invention, and a conventional zinc-based paint. The outer plate on the starboard side (S-SIDE), the BHD, and the coating film when the floor was coated were measured by the coating method.

Example 1 Table 1 shows the measurement results of a coating film obtained by coating the outer plate of P-SIDE by a conventional zinc-based coating method.

[0017]

[Table 1]

Table 2 shows the measurement results of the coating film obtained by coating the outer plate of S-SIDE by the coating method of the zinc-based coating material according to the embodiment of the present invention.

[0019]

[Table 2]

A graph as shown in FIG. 3 was created based on Tables 1 and 2. FIG. 3A is a graph showing measurement results of a coating film obtained by coating a P-SIDE outer plate by a conventional zinc-based coating method, and FIG. 3B is a graph showing an embodiment of the present invention. It is a graph which shows the measurement result of the coating film which applied the outer board part of S-SIDE by the coating method of such a zinc system paint.
In these figures, the measurement points 1 to 10 are plotted on the horizontal axis, and the surface roughness [μ] is plotted on the vertical axis. Further, in each figure, the graphs when the coating conditions (circles 1 to 4) are changed are displayed with different display symbols.

As shown in FIG. 3A, the surface roughness of the coating film on the outer plate by the conventional zinc-based coating method fluctuates greatly at each measurement point. On the other hand, as shown in FIG. 3 (b), the surface roughness of the coating film on the outer plate by the coating method of the zinc-based coating according to the embodiment of the present invention hardly changes at each measurement point. I understand that it is not.

Example 2 Table 3 shows the measurement results of the coating film obtained by coating the BHD portion of P-SIDE by the conventional zinc-based coating method.

[0023]

[Table 3]

Table 4 shows the measurement results of the coating film on which the BHD portion of S-SIDE was coated by the method for coating a zinc-based coating material according to the embodiment of the present invention.

[0025]

[Table 4]

A graph as shown in FIG. 4 was created based on Tables 3 and 4. FIG. 4A is a graph showing a measurement result of a coating film obtained by coating the BHD portion of P-SIDE by a conventional zinc-based coating method, and FIG. 4B is a graph according to the embodiment of the present invention. It is a graph which shows the measurement result of the coating film which applied the BHD part of S-SIDE by the coating method of the zinc paint. In these figures, measurement points 1 to 9 are plotted on the horizontal axis.
The vertical axis represents the surface roughness [μ]. Further, in each of the figures, the graphs when the coating conditions (circles 1 to 3, or circles 1 and 2) are changed are displayed with different display symbols.

BHD by a conventional zinc-based coating method
As shown in FIG. 4A, the surface roughness of the coating film of each part greatly fluctuates at each measurement point. On the other hand, B by the coating method of the zinc-based paint according to the embodiment of the present invention
As shown in FIG. 4B, it can be understood that the surface roughness of the coating film of the HD portion hardly changes at each measurement point.

Example 3 Table 5 shows the measurement results of the coating film obtained by coating the floor surface of P-SIDE by the conventional zinc-based coating method.

[0029]

[Table 5]

Table 6 shows the measurement results of the coating film obtained by coating the floor of S-SIDE by the coating method of the zinc-based coating material according to the embodiment of the present invention.

[0031]

[Table 6]

A graph as shown in FIG. 5 was created based on Tables 5 and 6. FIG. 5A is a graph showing a measurement result of a coating film obtained by coating a floor surface of P-SIDE by a conventional zinc-based coating method, and FIG. 5B is a graph showing an embodiment of the present invention. It is a graph which shows the measurement result of the coating film which applied the floor surface part of S-SIDE by the coating method of the zinc system paint.
In these figures, the measurement points 1 to 9 are plotted on the horizontal axis, and the surface roughness [μ] is plotted on the vertical axis. Also,
In each figure, the coating conditions (circle 1 and circle 2 or circle 1
The graph when the circle 3) is changed is displayed by changing the display symbol.

As shown in FIG. 5 (a), the surface roughness of the coating film on the floor surface by the conventional zinc-based coating method fluctuates greatly at each measurement point. On the other hand, as shown in FIG. 5B, the surface roughness of the coating film on the floor surface by the method of applying the zinc-based coating according to the embodiment of the present invention is almost changed at each measurement point. I can understand that there is no. As can be seen from Examples 1 to 3 described above, the surface roughness of the coating film obtained by the method for coating a zinc-based coating according to the embodiment of the present invention can be reduced,
It was proved that the method for applying a zinc-based paint according to the embodiment of the present invention was effective.

[0034]

As described above, according to the present invention, a scaffold which divides a surface to be coated and enables coating of the divided surface to be coated is assembled, and a sheet is provided between the scaffold and the surface to be coated. Curing, and further painting on the lower scaffold sequentially from the upper scaffold, so that it does not become a pear-skinned painted surface, it can obtain a good finished painted surface and suppresses the generation of dust during painting There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram for explaining a method for applying a zinc-based paint according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a curing method used in a method of applying a zinc-based paint according to an embodiment of the present invention.

FIG. 3 is a graph for explaining that a coating film of an outer plate portion according to a zinc-based coating method according to an embodiment of the present invention is better than a coating film formed by a conventional coating method.

FIG. 4 is a graph for explaining that a coating film of a BHD part by a method of applying a zinc-based paint according to an embodiment of the present invention is better than a coating film of a conventional coating method.

FIG. 5 is a graph for explaining that a coating film on a floor surface according to a method for applying a zinc-based paint according to an embodiment of the present invention is better than a coating film using a conventional coating method.

FIG. 6 is a view for explaining a conventional method of applying a zinc-based paint.

[Description of Signs] 1 Ship 3 Tank 5 Inner wall (surface to be coated) 51 Slope 52 Tank top 53 Upper deck back surface 54, 55, 56, 57, 58, 59, 60 Wall surface 71, 72, 73, 74, 75, 76 , 77,78 Scaffold

Claims (4)

[Claims] 1. A method for coating a surface to be coated with a zinc-based paint, comprising: a first step of dividing a surface to be coated and assembling a scaffold capable of coating the divided surface to be coated; The second to cure with a sheet between the surfaces
And a third step of coating the lower scaffold sequentially from the upper scaffold. 2. The zinc-based paint according to claim 1, wherein the third step is performed by applying a paint on a surface to be painted on the scaffold from an upper surface to a lower surface. Painting method. 3. The method for coating a zinc-based paint according to claim 1, wherein the sheet on the scaffold is removed when painting of the surface to be painted on the scaffold is completed. 4. The method according to claim 1, wherein in the third step, when painting is performed with a spray gun, the painting is performed while maintaining a predetermined distance between a surface to be coated and the spray gun. How to apply zinc paint.