Причини нерегулярної оксидної плівки котушки з алюмінієвого сплаву

We should all know that there is an oxide film on the surface of the котушка з алюмінієвого сплаву, який може захистити котушку з алюмінієвого сплаву, але іноді ми виявимо, що оксидна плівка матиме нерівномірний колір. Так що ж відбувається? Далі, Shandong Jincheng Aluminium Co., ТОВ, виробник рулонів з алюмінієвого сплаву, will introduce the causes and prevention of irregular oxide film of alloy aluminum coil.

котушка з алюмінієвого сплаву

Q: The swing working area in the slot is too big, and then the color of the oxide film is inconsistent.

А: Preventive measures: the oxidation workpiece has small rotation fluctuation and can be handled quietly, but when the solution temperature is too low, it is prone to map spots, which is unnatural

Q: When the damaged part of the alloy aluminum roll processing coating is cut off, the outside is wearing high-quality aluminum alloy, and the inner layer is miscellaneous aluminum. Due to the great difference, there will be "vitiligo" spots after oxidation.

А: Preventive measures: strictly regulate the materials and reduce or remove miscellaneous aluminum.

Q: The alkaline etching treatment of the workpiece during the process operation is incomplete, and some of the original oxide film and dirt cannot be removed; dispose immediately after alkaline etching light, and the surface is still alkaline; the workpiece in the transfer process is in contact with foreign matters.

А: Preventive measures: strictly ensure the integrity of alloy aluminum coil process in the production process, so as to produce better products.