What are the shapes of aluminum bars?

Under the same deformation temperature and deformation speed, the greater the deformation level of aluminum bar is, the more deformation energy is stored in the metal. Blank annealing refers to the annealing before the first cold deformation in the process of pressure processing, which is intended to make the blank get a balanced structure and have the maximum plastic deformation.

For example, the final rolling temperature of aluminum alloy hot rolled slab is 280~330 ℃. After rapid cooling at room temperature, this supersaturated solid solution has a tendency of spontaneous synthesis. When it is placed at a certain temperature and held for a certain time, the supersaturated solid solution will be synthesized, which will cause a significant increase in the strength and hardness of the alloy. This heat treatment process is called aging. Regarding the selection of annealing process principles for aluminum alloy plates, It is mainly confirmed according to the requirements of the pressure processing process and the requirements of the data application department for the product functions.

The annealing principles commonly used for aluminum alloy materials in industrial consumption are billet annealing, central annealing and product annealing. This is the most common case of recrystallization texture and secondary recrystallization texture. Natural aging can be preliminary immediately after quenching or after a certain incubation period. The speed of natural aging varies greatly among different alloys. Work hardening phenomenon cannot be completely eliminated, especially for aluminum alloys strengthened by heat treatment after rapid cooling, The recrystallization process can not be completed, and the supersaturated solid solution can not be fully synthesized in time to preserve a local work hardening and quenching effect. It is difficult to continue to stop cold rolling without annealing, so it is necessary to stop slab annealing.

Aluminum bar picture 8