Basic knowledge of automobile color matching

Basic knowledge of automobile color matching

A good automobile painting technician is not only good at painting, but also good at making the spray gun swing freely, making the spray gun mix paint like a brush. I can't tell the true from the false, that's touch-up paint, that's original paint. The following is my knowledge about car paint mixing, I hope you like it!

Basic knowledge of automobile paint mixing

1, it should be a neutral background, and the background brightness is most suitable for the surrounding environment.

2, silver powder series, the first choice should be to choose the appropriate thickness of silver powder!

3, first adjust the color brightness, namely the color depth, with white (silver pink) or black or other colors to adjust the color brightness, and pay attention to the hue saturation will change accordingly.

4. Adjust the hue with the auxiliary color when it is close to the brightness of the color sample, and pay attention to the saturation not lower than the color sample.

5. Adjust the saturation with white and black.

6, the three elements of color, when adjusting one of them, the other two usually change.

7, color formula in addition to achromatic color (white, silver, black, etc. ), should not exceed four colors.

8. The control color sample shall be subject to the spraying color, and the paint film shall be thoroughly dried.

9. Color samples should be waxed and cleaned before comparison.

10, the area of spray test plate shall be not less than 7 cm- 15 cm, and it shall be consistent with the area of standard plate if necessary.

1 1. When comparing colors, the test plate and the standard plate should be in the same plane.

12, the colorimetric light source should be mainly natural light, and others can only be used as reference.

Color matching of pigment and color paste (masterbatch)

Pigment color matching is that pigment powder has been prepared at the feeding stage, and the color is formed once after the whole production process, and there is basically no need for color matching in the future. Its advantage is that it is suitable for mass production of single color coatings, and its disadvantage is obvious, so it is not suitable for small batch production of many varieties and colors. Its advantage is precisely the disadvantage of color paste color matching, and its disadvantage is the advantage of color paste color matching. We must color the touch-up paint with color paste.

Similarities and differences between ink color matching and paint color matching: ink color matching generally has only four colors (red, yellow, blue and black), and basically all colors can be called out and calculated by color space coordinates; Paint, especially modern automobile paint, has many special effects, and the traditional color theory can no longer meet the needs of automobile paint color matching. It is often necessary to measure colors in four or more directions to fully express a color, so that it is impossible to achieve real computer color matching at present, and only ordinary plain paint can be prepared.

The basic theory of chromatics: color circle diagram and color space coordinates.

1. Complementary color theory of color: the result of complementary color collocation, the afterimage of complementary color, and the influence of complementary color in adjacent areas.

2, hue law, red and yellow are harmonious, and its color matching hue must be in the middle of red and yellow.

3, the lightness is moderate, 4 equal lightness and 9 equal lightness colors are matched, and the color matching lightness can only be between 4 and 9.

4. The chromaticity is changed later and the hue is smaller, so the chromaticity of complex color matching can't be higher than both mother colors, but it may be higher than one of them, at least lower than one of them.

5. The three elements of color are hue, lightness (also called brightness) and saturation (chroma or vividness).

6. The three elements are interrelated and isolated from each other, so when any one of them is adjusted, the other elements will change accordingly, that is, at least two elements will change.

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