The total processing rate is a crucial factor that determines the extent of deformation that the foil undergoes during recrystallization annealing and the subsequent rolling process. While the total processing rate of 1 series aluminum products can exceed 99%, and some 8 series products can also achieve this value, the total processing rate of aluminum alloy foil is typically less than 90%. This suggests that the manufacturing process of aluminum foil requires a significant amount of attention and precision to ensure that the final product meets the desired specifications.
The pass processing rate plays a crucial role in the rolling process, and it is essential to determine it accurately. For pure aluminum series products, the pass processing rate can go up to 65%. When it comes to the first pass, it is advisable not to choose excessive size after the billet has been annealed, and a processing rate of around 50% should suffice. In summary, determining the appropriate pass processing rate is crucial for achieving optimal results in the rolling process.