In the production of double-foil, aluminum foil rolling roughing, rolling, finishing three processes, from the process point of view, can be roughly divided from the thickness of the rolling outlet, the general method is the export thickness of more than Or equal to 0.05mm for the rough rolling, export thickness between 0.013-0.05 for the rolling, the exit of the sheet is less than 0.013mm sheet and finished products for the two-rolled finish rolling. Rough rolling and aluminum strip rolling characteristics similar to the thickness of the control depends mainly on the rolling force and post-tension, rough rolling processing rate of the thickness is very small, the rolling characteristics are completely different from the aluminum plate rolling, with aluminum foil rolling The particularity, its characteristic mainly has the following several aspects:

(1) aluminum strip rolling. Even if the rolling force changes, at any time to adjust the roll gap so that the roll gap to maintain a certain value can also get the thickness of the roll gap is the main control method of the AGC main body, Consistent strip material. The aluminum foil rolling to the middle of finishing, because the thickness of aluminum foil is very thin, rolling, increasing the rolling force, the roll elastic deformation than the rolling material to produce plastic deformation easier, roll elastic flattening is not Ignore, the roll of the spring rolling crush determines the aluminum foil rolling, the rolling force has been less than the role of rolling sheet, aluminum foil rolling is generally under constant pressure conditions without roll seam rolling, adjust the thickness of aluminum foil Mainly depends on the adjusted tension and rolling speed.

(2) Rolling. For very thin aluminum foil having a thickness of less than 0.012 mm (depending on the diameter of the work roll), the method of sheet rolling is extremely difficult due to the elastic flattening of the rolls. Therefore, a double-roll method Two aluminum foil with lubricating oil, and then together for the rolling method (also called stacked rolling). Rolling can not only roll out sheet rolling can not produce a very thin aluminum foil, can also reduce the number of broken bands, improve labor productivity, the use of this technology can mass production of 0.006mm ~ 0.03mm single-sided aluminum foil.

(3) the speed effect. Aluminum foil rolling process, the thickness of the foil with the rolling degree of thinning phenomenon known as the speed effect. The explanation of the mechanism of velocity effect is still in need of further study. The reason for the velocity effect is generally believed to be the following three aspects:

1), the friction between the work roll and the rolled material changes, with the rolling speed increases, the amount of lubricant into the increase, so that the rolling and rolling material lubrication between the state changes. The friction coefficient decreases, the oil film becomes thicker, the thickness of the aluminum foil decreases accordingly.

2), the mill itself changes. With a rolling mill with a cylindrical bearing, as the rolling speed increases, the roll neck will float in the bearing, so that the two interacting load of the roll will move toward each other close to the direction.

3), the material is rolling deformation processing softening. The rolling speed of the high-speed aluminum foil rolling mill is high, and the temperature of the rolling deformation zone is high as the rolling speed is increased. The metal temperature of the deformation zone can be increased to 200C, which is equivalent to performing an intermediate recovery annealing, Softening of the rolling material processing phenomenon.