Selection of rolling speed of aluminum foil

The rolling speed directly affects the production efficiency of aluminum foil. The higher the rolling speed, the higher the production efficiency. However, the rolling speed of aluminum foil is affected by the following conditions.

1. Quality of roll

Because the acceleration and deceleration process of aluminum foil rolling will make the thickness of plate and strip head and tail out of tolerance, high-speed rolling has corresponding large-diameter coils.

If you want to increase the rolling speed, shorten the acceleration and deceleration time or improve the automatic thickness adjustment function during acceleration and deceleration, otherwise the out of tolerance waste will increase.

2. Aluminum foil plate type

In the process of aluminum foil rolling, the temperature in the rolling deformation zone changes rapidly due to the action of deformation heat and friction heat, so that the roll shape changes, and the aluminum foil plate shape will also change with the change of roll shape.

3. Surface brightness

When other process conditions are the same, the rolling speed is low, the oil film between rolls is thin, the surface of aluminum foil is closer to the roll surface, and the brightness of rolled aluminum foil is good. The higher the rolling speed, the thicker the oil film between rolls, and the worse the surface brightness of the rolled foil.

Therefore, in order to improve productivity, high-speed rolling should be used in non-finished passes, but low-speed rolling should be used in the production of finished foil to appropriately increase the post tension.

4. Finished product thickness

When the current post tension and rolling force remain unchanged, the thickness of aluminum foil decreases with the increase of rolling speed.

5. Roll roughness

Under the same other conditions, the rolling speed increases with the increase of work roll roughness and decreases with the decrease of roughness.

6. Rolling oil

Under the same other conditions, the rolling speed decreases with the increase of additive content and oil viscosity, and increases with the increase of rolling oil temperature.