Coating is an important process in the production of aluminium sheet. The quality of coating directly affects the decorative effect of aluminium sheet. There are four main factors contributing to the quality of aluminium sheet coating. Let's look at the following aluminium sheet manufacturers. Friends who are interested in this aspect must not miss it.
The interior of the coating should be clean, dust-proof, insect-proof and ventilated to ensure that the surface quality of the aluminium plate coating is not polluted. At the same time, due to the change of temperature and process conditions in time.
2. Raw materials
Coating and aluminium are the most important factors affecting the quality of coating process. Because of the difference of batch color, the paint and coating rate are not high enough. Solvents and layers used in poor fineness coatings will directly affect the non-uniformity of coating and defective aluminium coil substrate, film thickness, non-uniform deflection edge, and also directly affect the quality and overall use of products. Therefore, the selection of raw materials should be strictly controlled.
The painting line requires the painting equipment to be in good condition, the painting equipment to run smoothly, without horizontal and vertical jitter, and the coating rollers to grind fine. Horizontal runout of each roll of coating machine must be controlled within the allowable range, otherwise it will seriously affect the surface quality of coating.
Coating process is closely related to the quality of coating, so it is necessary to control the relative linear velocity ratio of coating roll, coating roll, measuring roll and matrix within a certain range. According to the film thickness of different systems and coating products, the coating is set to a certain range of viscosity to ensure smooth coating and promote the improvement of product quality. In the curing process of coatings, oven control must be controlled according to the requirements, and can not be changed at will, otherwise it will seriously affect the color difference and performance of coatings products.
The above content is an introduction to the advantages and disadvantages of aluminium coating introduced by aluminium plate manufacturers for you. I believe that both the understanding of this aspect and the understanding of the whole aluminium plate will be helpful.