How to prevent foil wrinkling?
Wrinkles: fine foil surface display, vertical or diagonal locally raised, one or several rounded grooves tip, said wrinkles. The main causes of wrinkles: excessive pressure, resulting in uneven deformation during rolling or coiling tension is not enough; inappropriate or rolling roll control pressure is too low; the uneven thickness of the blank, the plate-shaped transverse or bad; lack of precision winding shaft, the sleeve is not round; platen roller pressure properly controlled.
Since the rolling Aluminum often bear greater than after the order processing tension, some rolling showed only bad plate-shaped cut in the use of aluminum foil or annealed Shique showed wrinkling. The main reason is due to wrinkling produce bad shape control, including roll grinding incorrect, unreasonable control roll, rolling and cutting process parameters is unreasonable, incoming bad flatness and flatness adjustment is not correct, set or lack of precision cylindrical die.
Wrinkle: aluminum foil surface can not be flattened vertical or horizontal creases become wrinkled. Since the flatness of serious adverse in aluminum foil or expanded winding forming wrinkles, by its very nature is not enough to make me surface tension leveled. For tension means 20MPa, the surface of the plate-shaped box no larger than 301, when more than 301, the inevitable wrinkling.
