KR980008347A - How to paint part of car - Google Patents

Abstract

The present invention relates to a method of partially coating an automobile, and more particularly, in a case where a paint part of an automobile is partially peeled off, an interface between an existing paint surface and a ground surface is not generated even when only a damaged part is painted.

for teeth. A step of removing oil mist and wax residues from the damaged portion of the coated film by using a degreasing agent, and a step of polishing and planarizing the interface so that a step is not formed in the damaged portion and the existing view (1) A step of coating a primer to improve the adhesion of the top coat to the under-work part and the corrosion of the panel, and a step of polishing the applied primer to the primer application area and the adjacent top application area in a dried state, (2) and a boundary surface (3) of the existing scene (1); and a step of coating the paint applied to the paint gun In order to remove the blanching paint from the rewinding scene to the existing scene, A step of spraying a diffusion paint removing agent on a diffusion area of an existing drawing scene to remove a coating material diffused into an existing drawing scene at the time of painting the upper blending, and a step of heat treating and drying the painted part in sequence do.

Description

How to paint part of car

The present invention relates to a method of partially painting an automobile, and more particularly, when an exposed portion of an automobile is partially peeled off, an interface between an existing road surface and a ground surface is not generated even when only a damaged portion is painted.

Generally, finished cars are usually painted with a certain color selected from the automobile company.

However, there was a case in which the paint surface was damaged by scratches or scratches caused by negligence during driving or by others during parking. Accordingly, if a part of the painting surface is damaged, the appearance of the automobile is damaged, so that the damaged coating surface should be repainted.

FIG. 1 is a process diagram for explaining a conventional partial coating method. When a paint surface of a part of an automobile is damaged and repainted, a degreasing agent is first used to remove grease and wax residues which are buried in a damaged portion of the paint film. (S1) is the entire panel where the coating film is damaged,

If the paint coating area is damaged simply by completing the degreasing of the panel surface, sandpaper is used to polish the interface so that steps are not formed in the damaged area and the existing view, If it occurs, putty is applied and restoration of the uneven part is performed, and then a sanding work is performed to planarize using sandpaper. (S2)

After the completion of the work of covering the damaged portion of the coating film, a primer and a coating material are uniformly applied to improve the adhesion of the top coat and the corrosiveness of the top coat to the under work portion (abrasive portion or putty portion). (S3)

After the applied primer coating is dried, the surface of the primer coating and the adjacent upper coating are smoothly polished using fine sandpaper to remove irregularities. (S4)

Thereafter, the paint mixed with the color of the existing scene is put into the spray gun, and the paint is coated on the whole panel (bonnet, door, etc.) including the damaged portion of the paint film (S5) and the heat treatment is completed. (S6)

However, this conventional partial coating method has the following problems.

First, even if the painting surface is partially damaged, the whole of the panel to which the damaged part belongs has to be painted, so that the amount of the paint is increased, which has a considerable influence on environmental pollution.

Second, it takes a long time to work according to many parts of the painting, and therefore it does not satisfy the desire of customers who want quick repair.

Third, when the entire panel is painted, the color of the existing panel is different from that of the adjacent panel due to the fading of the existing view, thereby deteriorating the overall appearance of the vehicle.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to minimize the amount of paint to be used, The purpose is to make it possible for quick repair.

According to an aspect of the present invention, there is provided a method of removing wax, comprising the steps of removing oil mist and wax residues from a damaged portion of a coating film using a degreasing agent, A step of applying a primer coating to improve the adhesion of the top coat to the base work and the corrosion of the panel, and a step of coating the primer coat with the primer coating Removing the unevenness by polishing to a coated portion of the paint and an adjacent top coat portion; applying a paint to the spray gun in accordance with the color of the existing scenery and then painting the coated portion only on the damaged portion; And to remove the boundaries of existing scenes, A step of spraying the paint on the diffusion area of the existing painting scene to remove the paint that has diffused to the existing paint surface when painting the upper paint, And a step of heat-treating the dried portion of the automobile, followed by drying.

1 is a process diagram for explaining a conventional partial painting method.

2 is a process diagram for explaining a partial coating method of the present invention.

FIG. 3 is a state in which a boundary is formed between an existing view and a re-view scene by repainting a primer applied region.

FIG. 4 is a state diagram showing a process of gradually thinning from a rewind scene to an existing view. FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

1: Existing scene 2: Scene scene

3: Interface

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings, which show an embodiment thereof with reference to FIGS. 2 to 4. FIG.

FIG. 2 is a process diagram for explaining the partial coating method of the present invention, FIG. 3 is a state diagram in which an application area of a primer coating is repainted and an interface is formed between an existing and a rewind scene, Which is a state in which the coating is gradually thinned.

When a part of the damaged coating surface is to be repainted by using the method of the present invention, polishing of the primer coating and polishing of the top coating area are performed in the same manner as in the conventional method, as shown in FIG.

In other words, if the grease and wax residue on the area to be repainted is removed with a degreasing agent (T1) and only the paint surface is damaged, sandpaper is used to polish the interface so that steps are not formed on the damaged area and the existing paint surface If the panel is damaged and irregularities are generated, putty is applied to repair the irregularities and planarization is performed using sandpaper. (T2)

Thereafter, a primer coating is uniformly applied (T3) in order to improve the adhesion of the top coat and the corrosiveness of the panel to the lower working part (polishing part or putty part), and then the coated part of the primer coating and the adjacent Grind smoothly to remove the irregularities using fine sandpaper to the top coating area. (T4)

After smoothly polishing the interface between the screen and the existing coating surface, the coating material blended with the color of the existing coating surface is applied to the spray gun, and the coating is applied until the coated primer coating is completely hidden. (T5)

When the painting operation is carried out by the above-described method, the boundary surface 3 is generated between the reappearance scene 2 and the existing view scene 1 as shown in Fig.

Accordingly, in order to remove the boundary surface 3 between the original scene 2 and the existing scene 1, the upper blending painting is performed so that the color gradually becomes thinner from the original scene to the existing scene. (T6)

As described above, when the top blending painting is performed so that the colors are gradually tapered from the replaying scene (2) toward the existing scenery (1) side, the boundary surface (3) between the rewinding scene and the existing scenery is mixed, The color difference is eliminated.

As described above, over spraying phenomenon occurs between the preliminary scene 2 and the existing preliminary scene 1 due to the partial coating operation by the spray gun.

That is, when the color is gradually and thinly applied from the rewind scene 2 to the existing view 1, the paint sprayed to the existing scene 1 is left on the side of the existing scene 1, Overspray blending must be performed to remove paint.

For this purpose, a spreading paint remover is added to a separate spray gun, and the overspray paint is removed by spraying directly onto the overspray mark before the paint is dried. (T7)

After the damaged part is locally coated, the coated part is heat treated and dried in the same manner as in the conventional method, thereby completing the painting work. (T8)

As described above, the present invention has the following advantages over the conventional method.

First, when the painting surface is partially damaged, the damaged area is locally coated, thereby minimizing the amount of paint used, thereby reducing environmental pollution caused by the use of the paint.

Secondly, since only the damaged part is painted, the working time is greatly reduced, and quick repair is possible.

Third, because it is a partial painting by mixture of colors, it is possible to match the color of the original scene with that of the existing scene even if the existing painting surface is faded.

Claims (1)

A step of removing oil mist and wax residues from the damaged portion of the coated film by using a degreasing agent, and a step of polishing and planarizing the interface so that a step is not formed in the damaged portion and the existing view (1) Applying a primer coating to improve the adhesion of the top coat to the undercoating portion and the corrosion resistance of the panel, applying the primer coating in a dried state of the applied primer coating, Removing the unevenness by polishing to a coating portion of the primer coating and a top coating portion adjacent to the primer coating in a state in which the coating material is dried and a step of putting the coating material blended according to the color of the existing scene into a spray gun, (2) and the boundary surface (3) between the existing scene (1) The method of the present invention includes the steps of performing a top blending painting so that the color gradually becomes thinner from the viewpoint of the existing scene to the existing view, and the step of applying the spreading paint to the spreading portion of the existing scene to remove the paint, A step of spraying a removing solvent, and a step of heat-treating and drying the painted part in sequence. ※ Note: It is disclosed by the contents of the first application.