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henan lichen aluminum co.,ltd.
henan lichen aluminum co.,ltd.

Factors Affecting Quality of Aluminum Sheet Coating

Coating is an important process in the manufacture of aluminum plates. The quality of coating directly affects the decorative effect of aluminum plates. There are four main factors that cause the pros and cons of aluminum coating. Let's take a look at the content of this aspect. Friends who are interested in this aspect must not miss it.


1. The environment of custom aluminum sheet


The interior of the painting room is required to be clean, dustproof, insect-proof, and ventilated to ensure that the surface quality of the custom aluminum sheet is not polluted. At the same time, the process conditions are changed in time due to temperature changes.


2. Raw materials for custom aluminum sheet


Various raw materials can be applied to produce different aluminum sheets including 1050 aluminum sheet, 1060 aluminum sheet, and so on. Paint and aluminum plate are the factors that can affect the quality of the painting the most during the painting process. Due to the color difference between the batches of the paint, the paint fineness is not enough and the coating rate is not high, the paint and the solvent are not well matched, the layering, etc., which directly affects the coating effect and produces defects. The unevenness of the aluminum coil substrate, uneven film thickness, and poor edge deflection also directly affect the product quality and overall use. Therefore, choosing custom aluminum sheet raw materials should be strictly controlled.


3. Equipment for custom aluminum sheet


The coating line requires the coating equipment to be intact, and the coating equipment must run smoothly, without horizontal and vertical jitter, and the coating roller must be finely ground. The lateral runout of all rollers of the coating machine must be controlled within the allowable range, otherwise it will seriously affect the surface quality of the coating.


4. The process of custom aluminum sheet


The aluminum sheet coating process has a close relationship with the quality of the coating, and requires the relative linear velocity ratio of the coating roller, paint roller, metering roller and substrate to be controlled within a certain range. It is necessary to set a certain viscosity range for the coating according to different systems and the film thickness of the coated product to ensure the smooth progress of the coating and promote the improvement of product quality. The curing process of the coating and the oven must be controlled as required, and should not be changed arbitrarily, otherwise it will seriously affect the color difference and performance of the coated product.