In the production of double foils, the rolling of aluminum foil is divided into three processes: rough rolling, intermediate rolling and finishing rolling. From a technological point of view, it can be roughly divided according to the thickness of the rolling exit. The general classification method is that the exit thickness is greater than Or equal to 0.05mm is rough rolling, the exit thickness between 0.013 and 0.05 is medium rolling, and the single finished product and double rolled finished product with exit thickness less than 0.013mm are finish rolling. The rolling characteristics of rough rolling and aluminum plate and strip are similar. The thickness control mainly depends on the rolling force and post-tension. The thickness of rough rolling is very small. Its rolling characteristics are completely different from the rolling of aluminum plate and strip. It has the characteristics of aluminum foil rolling. The particularity of it mainly includes the following aspects:
Aluminum plate and strip rolling. To make the aluminum strip thinner mainly depends on the rolling force, so the automatic control method of plate thickness is based on the constant roll gap as the main control method of AGC. Even if the rolling force changes, the thickness can be obtained by adjusting the roll gap at any time to keep the roll gap at a certain value. Consistent sheet and strip material. When aluminum foil is rolled to medium-finish rolling, because the thickness of the aluminum foil is extremely thin, the rolling force is increased during rolling, making it easier for the roller to produce elastic deformation than for the rolled material to produce plastic deformation. The elastic flattening of the roller cannot Neglected, the elastic rolling and flattening of the roller determines that in aluminum foil rolling, the rolling force no longer plays the same role as rolling plates. Aluminum foil rolling is generally roll gap-free rolling under constant pressure conditions, and the thickness of the aluminum foil is adjusted. Mainly depends on the adjusted tension and rolling speed.
