Cold Mill

Manufacturing Proces Movie

• Cold Rolling
• Coil Degreasing Line
• Annealing

Cold Rolling

Coils are cooled down and then undergo cold rolling below the recrystallization temperature to be made thinner.

Purposes of cold rolling

Increased strength and hardness by strain hardening

Finer grain structure

Precise thickness control

Improved flatness

Better surface quality

Coil Degreasing Line

Process for removing the rolling oil from the surface of the cold rolled coil to prevent defects

Annealing

During cold rolling, aluminum is hardened and becomes less rollable. So, cold rolled aluminum needs to be heated to recover its ductility at appropriate temperatures. This process is called annealing.
Annealing of expandable non-heat treatable alloys is classified as either process annealing (which is done in the course of cold rolling in order to adjust the strength of the final products), final annealing (which is done after cold rolling in order to obtain O-temper or H2X-temper alloys), or stabilizing annealing (which is done to produce H3X-temper alloys).

Manufacturing Proces Movie