There are two different common aluminum coil manufacturing processes in hot rolling and cold rolling. The main difference is that cold rolling is rolling at the recrystallization temperature, and hot rolling is rolling above the recrystallization temperature. So what's different in other ways?
1. Production process: Cold rolling mainly deals with non-heat-strengthable plates. Generally, the surface requirements are relatively high, and ultra-thin materials such as single zero Aluminum foil and double zero Aluminum foil can only be rolled by cold rolling. Cold rolling is processed by a casting and binding machine into a cast coil (8mm thickness) and processed by a cold rolling machine, while hot rolling is by heating aluminum coil ingots (400-500mm thickness) and rolling at a high temperature by a hot rolling mill. Made
2. Raw material supply: The difference between the two is that the billet supply is different. The hot-rolled billet is cast aluminum ingot-heating-rolled into coils for cold rolling, and the cold-rolled billet is cast-rolled coil-cold-rolled rolling;
3. Performance: Many materials require high corrosion resistance, fatigue resistance, strong plasticity, etc. This requires hot rolling. Hot-rolled aluminum coils have good surface quality, strong mechanical properties and ductility, and good oxidation effects. At the same time, aluminum coils are generally processed from aluminum coils, and they are naturally affected by the properties of aluminum coils.