Precautions for car paint care
Car paint is mostly baked paint. Mainly painted on the welding of the car factory, frame, and body, as well as after the repair of the body by craftsmanship. Generally, our primary requirement is primer. Then immerse the white car body into the paint groove, remove it, and dry the primer; Next, it will be sent to a dust-free workshop and sprayed with electrostatic spray paint. Finally, it will be dried at around 200 degrees Celsius. Some will also receive an additional layer of varnish. So, what are the tips and precautions for car paint in terms of care? Next, let's take a look with the editor!
1. The color matching technique for car repair paint is mainly based on the manufacturing specification card of "spectral color", and then we can find the color we need to match from the color card. Of course, we can also match colors based on the standard coating samples provided by the user. The detailed steps for color matching are as follows:
(1) Accurately distinguishing colors requires coloring according to the colors on the color board, and then distinguishing the "hue", "brightness", and "purity" of the edges under standard conditions. In addition, it is necessary to confirm the main color, background color, and other necessary qualities and adjust the primary color according to this standard.
(2) The correct selection of pigments requires the preparation of color coatings according to the requirements, including the type, variety, diluent, and auxiliary materials. The principle is to select high-performance and economical primary color pigments.
(3) The first step is to adjust some styles before making a lot of adjustments, especially in cases where there is no color matching equipment. It is more necessary to first adjust some styles, and after the color matching ratio is accurate, lay a foundation for many adjustments to reduce waste.
(4) The timing of the modulation steps and methods should strictly follow the principle of prioritizing first, then second, and from shallow to deep. The allocation time should also be fully stirred and evenly dissolved.
(5) When adding auxiliary materials, it is necessary to participate in the varieties that are used to each other in proportion, especially during allocation, and to participate in a timely and appropriate amount with even mutual adjustment. It should be noted that the color on the paint is wet while the sample color is solid. Therefore, after the paint color is well toned, it needs to be slightly lighter than the sample, not too close or too deep. The requirement is slightly lighter than the original color, so that after the paint dries, the board color will be the same, otherwise it will be too dark.
2. The reasons and treatment techniques for putty marks on the paint surface require the use of atomic ash for supplementation. After the two-component paint surface is sprayed, putty marks are sometimes present. The main reasons are as follows:
(1) The use of atomic ash has low quality.
(2) Use inferior two component intermediate primer.
(3) The ratio of atomic ash to curing agent is incorrect.
(4) Add atomic ash when the two component paint is not completely dry.
3. To prevent putty marks caused by the above reasons, it is necessary to pay attention to the following points before nursing:
(1) It is necessary to use high-quality atomic ash to prevent defects such as putty marks and loss of gloss.
(2) Apply high-quality two component intermediate primer and spray appropriate layers of intermediate primer.
(3) According to the formula provided by the manufacturer, it is necessary to pay attention to the ratio of atomic ash and curing agent for accurate preparation.
(4) When adding new two-component paint films, it is necessary to heat and dry them before adding atomic ash. If the paint surface shows putty marks, the following measures can be taken:
A It can be polished with P1500 sandpaper and then compensated with waxing process.
B When the situation is serious, polish and spray paint from the beginning.
Article source: Automotive repair paint kunchong.net.cn
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