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(1) Pinhole. Pinholes are the main defect of aluminum foil. In the raw material, on the roll, in the rolling oil, and even the dust in the air reaches about 6μm and enters the roll gap, it will cause

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 ca