The coating process of aluminum sheet, also known as coil coating, is a multi-step, continuous process that is highly automated to ensure a uniform and durable finish. The primary goal is to apply a protective and/or decorative layer to the aluminum, enhancing its corrosion resistance, durability, and aesthetic appeal.
Coated Aluminum Sheet Coating Process
While the specific steps and technologies may vary between manufacturers and coating types (e.g., powder coating, PVDF, etc.), the general process typically includes the following stages:
1. Surface Preparation (Pre-treatment):
This is a crucial step that ensures the coating will adhere properly to the aluminum surface. It involves:
Cleaning: The aluminum coil is thoroughly cleaned to remove any contaminants like oil, grease, or dirt. This is often done using alkaline cleaners and rinses.
Chemical Treatment: A chemical conversion coating is applied to the aluminum surface. This creates a thin, protective film that improves the adhesion of the paint and provides an additional layer of corrosion resistance. This is often a chrome-free or zirconium-based treatment.
…
For more detailed information about the coating process of coated aluminum sheet, please click here:https://www.dw-al.com/a/news/coated-aluminum-sheet-coating-process.html
