Solutions to minor problems in the production of pre-painted aluminum coils
Any product will have some problems more or less in the production process. For some minor problems in the production of color coated aluminum coils, you can refer to the following methods to control:
1.The coating process is a key operation link for aluminum coils, and it is also a decisive process that determines the quality of color-coated sheets. For coatings, the proportion of paint should be strictly adjusted according to the given proportion, and it is strictly forbidden to use different production batches to mix color paints. Before painting, it is necessary to make the paint used evenly spread on the coating roller as much as possible, and to ensure the flatness of the plate, only when the pressure of the coating roller is uniform, the thickness of the terminal coating film can be uniform and consistent.
2. Strictly control the use of defective rollers on the machine, pay attention to changes in paint consumption, if there is a large change in paint consumption, it may be that the pressure between the coating roller and the fixing roller has changed, and the pressure between the rollers needs to be re-adjusted immediately. Moreover, the paint is continuously stirred during the use of the paint, and the viscosity of the paint is detected in time. The flatness of the roller is inspected before painting, and the use of unqualified rollers on the machine is prohibited.
3.When selecting the base material, it is necessary to strictly select the color-coated aluminum coil. As far as possible, the flatness and intact shape of the sheet should be selected as the raw material of the color-coated sheet. Violent loading and unloading. In view of the scratches that may occur during the processing, preventive measures must be taken to ensure that the aluminum-magnesium-manganese plate production process is free from scratches in terms of raw materials and process procedures.
4. The defoamer should be added according to the regulations during the mixing process of the paint, so as to reduce the foam generated by the machine during the mixing process, but the more defoamer is not added, the better the efficiency, and the amount of defoamer should be reasonable. Moderate, the mixed paint should be allowed to stand for a period of time before being used on the roller, and the amount of bubbles in the paint should be controlled as little as possible.
5. The quality of the color-coated aluminum coil coating is also inseparable from the blending of the paint. Only when the paint is properly blended and mixed evenly, can the color of the printed pattern be smooth and beautiful. Therefore, when the pigment is uniformed and mixed, it is necessary to ensure that the coating has no agglomeration and moderate viscosity to ensure that the pigment is uniform and easy to coat.
