The particularity of aluminium foil jumbo roll

The particularity of aluminium foil jumbo roll

In the production of double foil, the rolling of aluminum foil is divided into three processes: rough rolling, intermediate rolling, and finishing rolling. From the point of view of the process, it can be roughly divided from the thickness of the rolling outlet. The general method is that the thickness of the outlet is greater than Or equal to 0.05mm is rough rolling, the outlet thickness is between 0.013 and 0.05 is medium rolling, and the single finished product and the double rolled product with the outlet thickness less than 0.013mm are finishing rolling. The rolling characteristics of rough rolling are similar to those of aluminum sheet and strip. The thickness control mainly depends on the rolling force and post tension. The rough rolling rate is very small, and its rolling characteristics are completely different from the rolling of aluminum sheet and strip. It has the advantages of aluminium foil jumbo roll. The particularity, its characteristics are mainly in the following aspects:

(1) Rolling of aluminum sheets and strips. The thinning of the aluminum strip mainly depends on the rolling force, so the automatic control method of plate thickness is the control method with constant roll gap as the main body of AGC. Even if the rolling force changes, the roll gap can be adjusted at any time to keep the roll gap at a certain value. Thickness can be obtained Consistent sheet and strip. While the aluminum foil is rolled to the middle finish rolling, due to the extremely thin thickness of the aluminum foil, the rolling force is increased during rolling, so that the elastic deformation of the roll is easier than the plastic deformation of the rolled material, and the elastic flattening of the roll cannot be It is neglected that the spring rolling and flattening of the roll determines that the rolling force can no longer play the same role as rolling the sheet. Mainly rely on the adjusted tension and rolling speed.

(2) Rolling. For ultra-thin aluminum foil with a thickness of less than 0.012mm (the thickness is related to the diameter of the work roll), due to the elastic flattening of the roll, it is very difficult to use a single rolling method, so the double-joint rolling method is used. The method of adding lubricating oil between two aluminum foils and rolling them together (also called stacking). Stacked rolling can not only roll out extremely thin aluminum foils that cannot be produced by single rolling, but also reduce the number of broken strips and improve labor productivity. This process can produce single-sided smooth aluminum foils of 0.006mm to 0.03mm in batches.