We all know that the color of color coated galvanized sheet is diverse. The color problem and how to control the color difference of color coated galvanized sheet are the problems that our manufacturers need to overcome, and also the key to ensure the
quality of products.
The different size of the substrate zinc flower will form a lot of small pits in the grain boundary, which has an impact on the formation of color ifference, especially for light color. It is better to select the substrate without zinc flower or small
How to control the color difference of color coated galvanized sheet? Our production equipment uses natural gas to supply the oven temperature, so the oven temperature is balanced, there will be no time difference, and the paint must
be adjusted evenly before production.
The stability of film thickness has a great influence on the color difference of color coated sheet. The adjustment of film thickness mainly includes: coating viscosity, adjusting the gap between the sticking
roll and the coating roll, changing the roll speed of the coating roll and the sticking roll, and adjusting the pressure between the coating roll and the strip backup roll.
As for the control of color coated galvanized sheet, the missing coating
is caused by the substrate, deformation, oxidation and other factors. Of course, controlling the color difference is the key factor to ensure the product quality, so we must attract the attention of every operator, so as to more effectively ensure the
usability of the product.
Due to the uneven mixing of the coating or the high viscosity of the coating in different barrels, the coating in the tray extends from the side of the feed port to the direction of the return port, showing a color difference
band. In addition, when changing the color of the coating, the color contrast is large. Due to the unclean cleaning, the pollution forms the color difference.