Application Study of Computer Color Measuring Technology Used in the Process of Aluminum Coloring

摘要

Application of the computer color measuring system used in the process of aluminum coloring was emphatically researched. To objectively evaluate the quality of the products, the values about K/S and color difference were calculated. Through analyzing each factor such as dyeing temperature, the thickness of the oxidized-layer, pH value as well as dyeing time, the optimum condition is defined for the processing technology. Satisfactory products were obtained in solution with pH of 5, dyed at 60℃ for 30 min and the film thickness was controlled within 16±0.5 μm. The results showed that the best K/S value of the aluminum after dyeing treatment had reached 4.24 and fading color fastness was 4-5 level to dry rubbing, 3-4 level to wet rubbing while staining color fastness was 4 level to dry rubbing, 3 level to wet rubbing.