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Aluminum spraying is a commonly used surface treatment technology that forms a coating on the surface of aluminum to achieve the purpose of protection, beautification or other specific functions. The national standard for spraying film thickness stipulates the requirements for the thickness of aluminum coatings in different application scenarios.
So, what is the national standard for aluminum spraying film thickness? According to the relevant national standard “Test Method for Film Thickness of Organic Coatings for Architectural Aluminum Profiles” (GB/T 5237.4-2017), the film thickness of aluminum spraying should be determined according to different functional requirements and use environments. In general, the common aluminum spraying film thickness is between 10-25μm.
However, it should be noted that the specific film thickness requirements may vary depending on different industries, different products and different regions. For example, for aluminum building profiles used outdoors, the spraying film thickness is often required to be greater than 15μm to ensure its UV resistance, oxidation resistance and weather resistance. For aluminum door and window profiles used indoors, the thickness of the spray coating can be appropriately reduced, usually between 10-15μm to meet basic needs.
In addition, the detection method of aluminum spray coating thickness is also a very important part. Currently, the commonly used detection methods include the grid method, the line method, the thickness gauge, etc. These methods have their own advantages and disadvantages, and the specific selection should be made according to the actual situation and needs.
In practical applications, it is necessary not only to meet the requirements of the national standard for aluminum spray coating thickness, but also to consider the influence of other factors, such as the quality of the coating, the operating specifications of the spray coating process, etc. Only by comprehensively considering these factors can the stability of the spray coating effect and the reliability of the quality be ensured.
In summary, the national standard for aluminum spray coating thickness is not a fixed value, but varies according to actual needs and application environments. When choosing the thickness of aluminum spray coating, it is necessary to comprehensively consider the functional requirements of the product, the use environment, and the provisions of relevant standards. At the same time, reasonably select and use the detection method to ensure the accuracy and qualification of the spray coating thickness.