A method for partial paint repair of automobile

Abstract

The present invention relates to the technical field of local touch-up paint, and proposes a method for local touch-up paint for automobiles, comprising the following steps: S1, painting: first spray varnish on the scratched part of the automobile and then spray color paint; S2, magnetic field interference: after spraying the color paint, use electrostatic or magnetic field interference to observe that the substances in the color paint are consistent with the original car paint, and then remove the static or magnetic field; S3, interface gap treatment: use transition materials to treat the interface between the newly sprayed car paint and the original car paint, so that there is no gap between the newly sprayed car paint and the original car paint. S4, let it dry in a static state. In step S2, an electron microscope is used for observation, and the electron microscope specifically observes the pearl powder or metal powder in the color paint, and the arrangement direction of the pearl powder or metal powder in the sprayed color paint and the original paint after observation. The above technical scheme solves the technical problem in the prior art that only local touch-up paint on scratches has obvious traces at the junction of the new and old paints.

Description

Technical Field

[0001] The present invention relates to the technical field of local paint touch-up, and in particular to a method for local paint touch-up of an automobile. Background Art

[0002] When we accidentally bump or scratch our cars while using them, or when the car is stationary and is deliberately scratched, causing the paint to fall off, this is when paint repair is involved. Sheet metal, polishing (clean, feathered), putty, red gray, mid-coat primer, topcoat, plus quick touch-up paint technology, this is a complete set of paint repair construction steps. Many places use traditional touch-up paint, which is time-consuming and labor-intensive, and generally takes 1 to 2 days to repair the car. In order to achieve a better final effect, the current treatment of car scratches is generally to spray paint the entire car. Even if there are craftsmen who are studying to touch up the paint only for scratches, there is a technical difficulty that the scratch touch-up paint will leave obvious marks at the junction of the new and old paints, affecting the overall aesthetics of the car. Summary of the Invention

[0003] The present invention provides a method for local paint repair of an automobile, which solves the technical problem in the related art that only local paint repair of scratches leaves obvious marks at the junction of new and old parts.

[0004] The technical solution of the present invention is as follows: A method for partial paint repair of an automobile comprises the following steps:

[0005] S1. Painting: First spray the car scratches with clear varnish and then spray the color paint;

[0006] S2. Magnetic field interference: After spraying the paint, use electrostatic or magnetic field interference to observe that the substances in the paint are consistent with the original car paint, and then remove the static or magnetic field;

[0007] S3. Interface gap treatment: Use transition material to treat the interface between the newly sprayed car paint and the original car paint to ensure that there is no gap between the newly sprayed car paint and the original car paint.

[0008] S4. Let it dry.

[0009] As a further technical solution, in step S2, an electron microscope is used for observation.

[0010] As a further technical solution, in step S2, the electron microscope specifically observes the pearl powder or metal powder in the paint, and observes the arrangement direction of the pearl powder or metal powder in the sprayed paint and the original paint.

[0011] As a further technical solution, in step S1, the scratched part of the car is first sprayed with clear varnish, and before it dries, the color paint is sprayed.

[0012] The working principle and beneficial effects of the present invention are:

[0013] 1. Only repaint the scratches on the car to save raw materials.

[0014] 2. When spraying paint on scratches, use the reverse spray method. Spray the varnish first and then the color paint. After spraying the color paint, perform electrostatic or magnetic field interference on the color paint to make the newly sprayed car paint the same color as the original car paint. If the reverse spray method is not performed, the static electricity and magnetic field interference will not play the corresponding role.

[0015] 3. The interface between the new and old car paints is treated with interface transition materials to ensure that there is no gap between the newly sprayed car paint and the original car paint, and the new and old car paints are connected without any traces, achieving a very good effect. DETAILED DESCRIPTION

[0016] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making any creative efforts are within the scope of protection of the present invention.

[0017] Example 1

[0018] A method for partial paint repair of an automobile comprises the following steps:

[0019] S1. Painting: First spray the car scratches with clear varnish and then spray the color paint;

[0020] S2. Magnetic field interference: After spraying the paint, use electrostatic or magnetic field interference to observe whether the substances in the paint are consistent with the original car paint, and then remove the static or magnetic field; the observation is carried out using an electron microscope; the specific observations made by the electron microscope are the pearl powder or metal powder in the paint, and the arrangement direction of the pearl powder or metal powder in the sprayed paint and the original paint are observed.

[0021] S3. Interface gap treatment: Use transition material to treat the interface between the newly sprayed paint and the original paint to eliminate any gaps between the newly sprayed paint and the original paint. The transition material should be the same color paint as in S1.

[0022] S4. Let it dry.

[0023] Example 2

[0024] The method comprises all the steps of Example 1, except that in step S1, the scratched part of the car is first sprayed with clear varnish, and before the clear varnish dries, the color paint is sprayed.

[0025] Comparative Example 1

[0026] The method comprises all the steps of Example 1, except that in S1, the color paint is sprayed first and then the clear varnish is sprayed.

[0027] Comparative Example 2

[0028] The method comprises the main steps of Example 1, but does not comprise step S2:

[0029] A scratch repair test was conducted according to the process methods of the above embodiments and comparative examples, and 30 professional repair masters were randomly selected to score each item of the repair results. The average score was taken after removing the highest and lowest scores for each item, with 100 points as the full score. Specific scoring items include scratch visibility (100 points for the most obvious, 1 point for the least obvious), scratch color difference (100 points for the most obvious, 1 point for the least obvious), repair gap (100 points for the most obvious, 1 point for the least obvious), and comprehensive score (100 points for the best, 1 point for the worst). Details are shown in the following table:

[0030] Group Scratch visibility Scratch color difference Repair gap Overall score Example 1 18.6 15.4 23.2 85.2 Example 2 19.2 10.5 19.0 88.5 Comparative Example 1 22.3 22.6 23.8 81.3 Comparative Example 2 22.4 31 15.7 78.8

[0031] As can be seen from the table above, as the basic inventive concept, by reverse spraying the varnish and color paint, combined with the effects of static electricity and magnetic fields, after observing under an electron microscope that the pearl powder or metal powder is consistent with the original paint, the repair effect of the local paint repair is greatly improved, and the color of the scratches is greatly reduced. If only the effects of static electricity and magnetic fields are used, the traditional method of first applying color paint and then clearcoat is still used, and the color difference of the scratches is still somewhat unsatisfactory. At the same time, it was found that when reverse spraying, if the varnish is not dry, the color difference of the scratches is also greatly reduced when the color paint is sprayed.

[0032] Furthermore, through specially designed transition material processing, combined with varnish and color paint backspraying, and electrostatic magnetic field, the combination of the three further improves the scratch repair effect, especially the repair gap degree and the color difference at the gap have been greatly improved, so that the overall scratch repair effect has reached a satisfactory level, thereby achieving excellent local repair, no color difference, bright and new, and no visible traces of repair, solving the technical problem of only local paint repair on the scratches, with obvious traces at the junction of the new and old.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for partial paint repair of an automobile, characterized in that: The following steps are involved: S1. Painting: First spray the car scratches with clear varnish and then spray the color paint; S2. Magnetic field interference: After spraying the paint, use electrostatic or magnetic field interference to observe that the substances in the paint are consistent with the original car paint, and then remove the static or magnetic field; S3. Interface gap treatment: Use transition material to treat the interface between the newly sprayed car paint and the original car paint to make there is no gap between the newly sprayed car paint and the original car paint; S4, let it dry; In step S2, the electron microscope specifically observes the metal powder in the paint, and observes the arrangement direction of the metal powder in the sprayed paint and the original paint.

2. A method for partial paint repair of an automobile according to claim 1, characterized in that: In step S1, the scratched part of the car is first sprayed with clear varnish, and before it dries, the color paint is sprayed.