What are the care techniques for car repair paint
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. Usually, our primary requirement is primer. Then immerse the white car body into the paint groove, remove it, and dry the primer; Next, send it to a dust-free workshop, spray it with electrostatic spray paint, and finally dry it 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 Xiaobian!
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 side of the color card. Of course, we can also match colors based on the coating samples provided by the user. The specific process of color matching is 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 determine the main color, background color, and other necessary quality and color materials for adjusting the primary color according to this standard.
(2) The correct selection of pigments requires the production of color coatings according to the required types, types, and matching application criteria for diluents and auxiliary materials, and the selection of primary color pigments with good performance and economy.
(3) The first step is to adjust some styles before making a large amount 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 reducing waste by making a large amount of adjustments.
(4) The timing of the modulation process and methods should strictly follow the order principle of first, then, and from shallow to deep. The timing of mixing should also be sufficient, stirring, and mutual dissolution should be uniform.
(5) When adding auxiliary materials, it is necessary to participate in the types of mutual adaptation based on the proportion, especially during the mixing process. It is necessary to participate in an appropriate amount and adjust each other evenly. It should be noted that the color on the paint is wet while the sample color is solid, so after the color tone is good, 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, it will have the same board color, otherwise it will be too dark.
2. The reasons and treatment techniques for the appearance of putty marks on the paint surface require the use of atomic ash for supplementation. After the two-component paint surface is sprayed with topcoat, sometimes putty marks may appear. The main reasons are as follows:
(1) The use of atomic ash has poor quality.
(2) Apply incomplete two component 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 avoid 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 avoid defects such as putty marks and loss of light.
(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 precise manufacturing.
(4) When adding new two-component paint film, it is necessary to heat and dry it before adding atomic ash. If putty marks appear on the paint surface, the following methods can be adopted:
A It can be polished with P1500 sandpaper and then compensated with waxing process.
B When the situation is severe, polish and repaint.
Article source: Automotive repair paint http://www.jinliangxincai.com
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