What causes the velocity effect of the aluminum foil?
3, the material is softened deformation of the rolling process. High-speed aluminum foil rolling mill speed, with increasing rolling speed, rolling temperature deformation zone opened higher, according to calculate the temperature of the metal deformation zone can rise to 200 ℃, it is equivalent to a middle of the recovery annealing, thereby causing processing the rolled material softening.
2, the change in the mill itself. Using cylindrical bearing of the mill, with the increase of rolling speed, roll neck bearings will float, so that the direction contained in the roll will be affected by the interaction of two mutually butting move.
1, the state of friction between the work rolls and the rolled material changes, with the increase of the rolling speed, into the amount of lubricating oil increases, so that the lubrication between the rolls and the rolled material changes. Reduced coefficient of friction, film thickening, followed by thinning the thickness of aluminum foil.
During the aluminum foil rolling process, with the rise of the thickness of the foil rolling system and thinning phenomenon is known as speed effect. For speed effect mechanism has yet to be explained in-depth research, the cause is generally believed that the speed of effect the following three aspects:
