Aluminum foil and fold thickness difference is caused by what?
Chatter marks mean shear foil surface periodically. Generating oscillation marks two reasons: one is due to the formation of roll grinding cycle in about 10 ~ 20mm; the other is due to the oil film is not formed continuously rolling vibration often generated in a speed range, a period of 5 ~ 10mm. The root cause is the lack of chatter marks film strength, generally can be used to improve lubrication to eliminate.
A roll of aluminum foil rolling up to tens of meters, rolling up to about 10h, with time, the difference between thick, very easy to form, and the means for adjusting the thickness of only tension speed. These factors have caused difficulties controlling the thickness of aluminum foil rolling, so the real difference in thickness control less than 3%, a number of conditions need to ensure, rather difficult.
Difficult to control the thickness difference is a feature of aluminum foil rolling, 3% of the difference between the thick plate production when maybe difficult, but they are enormously difficult in aluminum foil production. The reason is that thin, other trace conditions can be affected, such as temperature, oil, and gas concentration.
