Detailed explanation of the manufacturing process of aluminum rolling shutter doors

1. Raw material selection
Aluminum alloy material: Aluminum alloy AA6063 is usually selected as the main raw material. This material has good strength, toughness and corrosion resistance.
Additives: In order to improve performance, zirconium phosphate, palygorskite, composite rare earth and other materials are added. For example, zirconium phosphate can improve the wear resistance of the material, palygorskite can enhance the toughness of the material, and composite rare earth helps to improve the mechanical properties of the material.

2. Preparation of aluminum rods
Heat drying treatment: The aluminum alloy AA6063 is heat dried at 300-350℃ for 30 minutes.
Melting and adding: After heating to the molten state, additives such as composite rare earth and palygorskite are added in turn, and refined and degassed.
Casting and extrusion: Aluminum rods are cast under vacuum conditions and then extruded.
Solution aging heat treatment: The extruded aluminum rods are subjected to solution aging heat treatment to further improve their mechanical properties.
3. Manufacturing of multi-layer composite structure
Structural design: Aluminum rolling shutter doors usually adopt a multi-layer composite structure, including an upper aluminum sheet layer, an upper thermoplastic bonding layer, a middle aluminum sheet layer, a lower thermoplastic bonding layer and a lower aluminum sheet layer.
Thickness ratio: The ratio of the total thickness of the upper, middle and lower aluminum sheet layers to the total thickness of the upper and lower thermoplastic bonding layers is generally 1:0.2-0.4.
Binder preparation: A homemade adhesive is used, and its ingredients include composite resin particles, aluminum silicate ceramic powder, sodium hexapolyphosphate, attapulgite and polyvinyl alcohol solution. The preparation process includes wet grinding, drying, stirring and ultrasonic treatment.
Hot pressing: Under vacuum conditions, the aluminum sheet layer and the thermoplastic bonding layer are hot pressed at a pressure of 12-15MPa, a temperature of 480-500℃, and a time of 20-60 minutes.
IV. Surface treatment
Coating process: Electrostatic spraying or fluorocarbon spraying is used to ensure a smooth, wear-resistant and corrosion-resistant surface.
Oxidation treatment: Anodizing treatment is used to improve the weather resistance and aesthetics of aluminum rolling shutter doors.
5. Quality inspection
Performance test: The finished product is tested for tensile strength, corrosion resistance, wear resistance and other performances to ensure that the product meets international standards.
Appearance inspection: Check whether there are scratches, bubbles and other defects on the surface to ensure the appearance quality.
6. Environmental protection and sustainability
Material environmental protection: All materials used are environmentally friendly and meet international environmental standards.
Production process: During the production process, we focus on energy conservation and emission reduction, and use advanced environmental protection equipment to reduce the impact on the environment.
Conclusion
Aluminum rolling shutter doors have become an indispensable security product in modern buildings due to their excellent performance and wide range of applications. Through the continuous optimization of the above manufacturing processes, the quality and performance of aluminum rolling shutter doors have been significantly improved, which can better meet the diversified needs of the international market. For international wholesale buyers, understanding these manufacturing processes will not only help choose high-quality suppliers, but also provide customers with more competitive product solutions.