Causes of color difference in spraying production line

Color difference refers to the difference in color between two or more colors. In the process of spraying the top coat, the temperature and humidity of the spraying production line environment are different, which has a great influence on the color difference of the top coat. What are the reasons? Next, the richfruits spraying equipment manufacturer will take you to understand the causes and solutions of the color difference in the spraying production line.

Reasons for color difference in spraying production line:

1. Uneven coating film thickness;

2. The temperature distribution of the curing furnace is uneven;

3. Workpieces of different materials, thicknesses, shapes and sizes are produced in the same operation at the same time;

4. When changing paint color varieties, if the powder supply device, spray gun, powder spraying room and powder paint recovery and cleaning are not clean;

5. Color difference caused by uneven distribution of powder pigments.

Solution:

1. Ensure uniform coating thickness;

2. The temperature distribution of the curing furnace is uniform;

3. It should be classified according to the material, thickness, shape and size of the workpiece, and then set different baking times for baking and curing, which may reduce the color difference of the coating film;

4. When changing paint, clean all parts, try to stagger the production of materials with large differences in color;

5. Improve the quality of the powder to ensure that the L, a, and b of the powder are not much different and the positive and negative are uniform.

The key to the pre-treatment of the spraying production line workshop and the electrophoresis mechanical automatic transportation equipment are general suspension chains, swing bar chains, program-controlled Hulus, swing bar chains, etc. Although their structures are very different, their functions are all the same-transport product workpieces, Carry out the production process.

All kinds of transportation equipment have their own advantages and disadvantages. When selecting processing technology layout and equipment model, comprehensive consideration should be given to the industrial plant, project cost, vehicle system, and processing technology regulations, and equipment selection should be made. In terms of processing technology, the choice of stepping or rotary is also very harmful to equipment project investment.