What is the quality of aluminum plate coating related to?
Feb 05, 2022
What is the quality of aluminum plate coating related to?
Coating is an important process in the manufacture of aluminum sheets. The quality of coating directly affects the decorative effect of aluminum sheets. There are four main factors that cause the advantages and disadvantages of aluminum plate coating. Let us aluminum plate manufacturers take you to understand the content of this aspect. Friends who are interested in this area must not miss it.
1. Environment
The interior of the coating room is required to be clean, dust-proof, insect-proof and ventilated to ensure that the coating surface quality of the aluminum plate is not polluted. At the same time, the process conditions are changed in time due to temperature changes.
2. Raw materials
Coatings and aluminum plates are the factors that most affect the coating quality in the coating process. Due to the color difference between batches of coatings, the fineness of the coatings is not enough and the coating rate is not high, and the coatings and solvents are poorly matched, delamination, etc. It directly affects the coating effect and produces defects. The unevenness of the aluminum coil substrate, the uneven film thickness, and the poor edge deflection also directly affect the product quality and overall use. Therefore, when selecting raw materials, it should be strictly controlled.
3. Equipment
The coating line requires the coating equipment to be in good condition, the coating equipment needs to run smoothly, there can be no horizontal and vertical jitter, and the coating roller needs to be finely ground. The lateral runout of all rollers of the coating machine must be controlled within the allowable range, otherwise the surface quality of the coating will be seriously affected.
4. Process
The coating process is closely related to the quality of the coating, and it is required to control the relative line speed ratio of the coating roller, the paint roller, the metering roller and the substrate within a certain range. According to different systems and the film thickness of the coating products, a certain viscosity range should be set for the coating to ensure the smooth progress of the coating and promote the improvement of product quality. The curing process of the coating, the oven control must be controlled according to the requirements, and must not be changed arbitrarily, otherwise it will seriously affect the color difference and performance of the coating product.
