1.What are the requirements for the core process and surface treatment of galvanized coils used as roof panels and wall panels?
Core process: installing panels; on-site spraying/laminating (key steps)
Surface treatment: Highly challenging and demanding:
• Spraying: Requires specialized equipment and is significantly affected by the environment (temperature, humidity, dust), with the risk of uneven coating, sagging, and contamination.
• Lamination: Relatively simple, but the film has a limited lifespan and may flake and discolor.
2.What are the requirements for the core process and surface treatment of color-coated steel coils used as roof panels and wall panels?
Core process: Installing panels (completed)
No on-site processing is required: the color and coating are completed in the factory, and the quality is stable and uniform.
3.What are the raw materials and processing performance of galvanized coil parts?
The base material is usually low carbon steel designed for deep drawing and has excellent ductility. The zinc layer itself also has a certain lubricating effect.
4.As the raw material for processed parts, what is the processing performance of color steel coils?
Good: Colored coatings (usually polyester paint or plastic) change the coefficient of friction of the material surface.
5.What are the advantages and disadvantages of galvanized steel coils and color-coated steel coils?
Advantages of galvanized coil: It offers excellent formability and is suitable for manufacturing complex parts. As a base material, it allows for subsequent painting (customizable in any color).
Disadvantages of galvanized coil: As finished sheet material, installation is cumbersome and requires on-site surface treatment. The welding process is complex and poses health risks. Cut surfaces are prone to rust.
Advantages of Color Coil: As a finished sheet, installation is extremely simple and quick, and can be completed in one step. The appearance is immediately apparent, and the color is uniform and beautiful. It eliminates the pollution and trouble of on-site spray painting.
Disadvantages of color-coated steel coils: The coating may be damaged during processing, affecting aesthetics and corrosion resistance. Weldability is poor.
Forming limitations are greater than those of galvanized coils.