At Henan Worthwill Industry Co., Ltd., we specialize in providing top-quality aluminum products. One of our core processes is the coating of aluminum coils, ensuring they meet the highest standards for various applications. Below is a detailed description of our coating processing line, designed to ensure optimal performance and durability of our products.
The process begins by placing the plain aluminum coils into the decoiling machine. From here, the coils pass through the material storage tower, which ensures that the entire processing line remains operational when new coils are introduced. This step is crucial to maintaining efficiency and preventing downtime.
In the pre-processing stage, the aluminum coils undergo a thorough cleaning process:
After cleaning, the coils are dried at a temperature range of 210-230°C. This ensures that all moisture is removed, preparing the coils for subsequent processing steps.
To enhance the adhesive strength and corrosion resistance, the coils undergo a passivation process. A chromium-based solution is applied, creating a protective layer on the coil surface.
The bottom of the coils is then coated with either a clear varnish or a white and gray paint, depending on the specific requirements.
The coated coils are dried again to ensure that the coating is properly set and adhered to the aluminum surface.
After drying, the coils are cooled using an air cooling system or water cooling system to bring them down to a manageable temperature.
For coils cooled with a water cooling system, an additional drying step is necessary to remove any residual moisture.
Based on customer specifications, a second coating can be applied to the coils, adding an extra layer of protection and enhancing the appearance.
The coils undergo a final drying process to ensure the second coating is completely dry and adhered.
The coils are then cooled once more to stabilize the coatings and prepare them for the final steps.
To protect the finished coils, a plastic film is applied to their surfaces. This prevents damage during handling and transportation.
The coils are then packaged using inner paper tubes with a thickness of about 15-20mm. This provides additional protection and stability.
Finally, the coated and packaged coils are sent to storage, ready for shipment to our customers.Our coating processing line ensures that every coil meets rigorous quality standards, providing our customers with durable and reliable aluminum products.
