For this process, manufacturers of aluminum circles are obliged to roll and calender the 6 millimeters thick billet to the required thickness of aluminum circle.
What matters most is to be able to conduct a meticulous control to the rolling and calendering amount of each pass.
However, after executing quantitative surveys, we have found out each rolling and calendering amount shall not exceed 60%. To put it more precisely, the maximum calendering of 1.0 millimeter should be o.6mm or else it will affect the quality of aluminum circle.
Furthermore, the same plate shall be uniformly calendered and rolled.
More importantly, under the circumstance of successfully controlling its thickness and width, aluminum circle’s thickness tolerance should be controlled within plus or minus 0.01mm.