What are the production methods for aluminum coil?

Aluminum coil is produced through several methods, primarily involving the process of rolling. The main methods include: 1) Hot rolling, where aluminum slabs are heated and rolled into coils at high temperatures. 2) Cold rolling, which involves rolling aluminum at room temperature to achieve thinner gauges with higher precision. 3) Continuous casting and rolling, a process where aluminum is cast and rolled in one continuous operation, optimizing production efficiency. 4) Twin-roll casting, a method where molten aluminum is cast directly between two counter-rotating rolls, forming a thin strip that can be coiled immediately. Each method has its advantages and is chosen based on the desired coil properties, thickness, and application.