The uneven thickness of the anodized film of aluminum alloy, occurring frequently in production,seriously affects the subsequent electrolytic coloring and sealing effect of an aluminium anodizing sheet plate. The causes for this includes inappropriate solution temperature, effective area, contact state and sulfuric acid concentration etc. The temperature of the anodic oxidation liquid has an important influence on the uniformity of …

Aluminium anodizing sheet plate 5257 belongs to an alloy that is rarely used. More frequently applied 5000 alloys are 5005, 5052, 5083 and 5754. Their main element is magnesium, and the magnesium content is between 3-5%. Because of this, they are also called aluminum-magnesium alloy. The main features are low density, high tensile strength, high elongation, and good fatigue strength, …