< unk > Formula Guide Color application for automotive coatings coatings

People's requirements for the decorative appearance of automobiles are constantly increasing, and the color of automobile coatings has changed from a single black, white, and blue to become more prominent and personalized, and more colorful. Metal flash paints and pearlescent paints of various colors are not only widely used on cars, but also started to be used on some trucks. People began to study the "pop color" of the car. Due to the improvement of the color change system technology of the automotive paint coating line, the color change of the automotive coating is faster and more convenient, and mutual bleeding and solvent loss are avoided. On the same painting line, many different colors can appear at the same time. STEYR Automobile Company changes the color of automobile coating at any time according to the requirements of users.

The company uses approximately 250 to 300 different colors each year. In order to meet this need and make it more convenient for users to choose colors and computer production management, most European and American automobile factories and paint manufacturers have adopted a unified color standard Color Chart - RAL color card . "RAL" currently has thousands of colors, and each color has a unified number, and "RAL ××××" is uniformly marked on the supply documents and packaging barrels of the paint factory, as well as on the design drawings of the automobile factory, so that It is convenient for computer management, and it also provides convenience for the computer color matching system of automobile maintenance.

In the RAL Color Chart, each color has a corresponding spectral absorption value, as well as X, Y, Z values according to DIN 5033, and de, dl, da, db, dc values according to DIN 6174, and with these values , which is convenient for the production control of paint factories and automobile factories, but the Color Chart only provides the values of the two color coordinate systems of the DIN standard. If the data of the ISO 7724 and ASTM E 308 standards can be added, it will be more complete and representative. At present, the development of my country's automobile industry is unbalanced. The products of Volkswagen, Ford, and Isuzu's joint venture companies are parallel to those of a large number of small and medium-sized automobile factories. The color of automobile coatings is also impure, irregular and random, and the color names are even more varied. , Such as: "Isuzu Blue", "Wantong Sang Red", "Toyota White" and so on. my country's automobile industry is in the development stage, and it is not realistic to completely unify the color standards, but the recommended standards should be implemented. The current GB 3181-82 paint color standards have few varieties, poor practical operability, and lack of standard data. We should learn from foreign mature color standards as soon as possible to adapt to the development of the automobile and paint industries.

For more details, please refer to the full text of "A Brief Discussion on the Current Situation and Development of Automotive Coating Performance in my country" (Zhou Guangya)