What is the reason for the uneven color of the aluminum coil oxide film? Specifically, aluminum coil manufacturers mainly have the following three problems:
(1) The area of the aluminum coil workpiece is too large, the swing in the groove is too large during operation, and the contact, renewal and exchange between the edge and the center part and the solution are too different, resulting in inconsistent color of the oxide film. Prevention method: When the aluminum plate is oxidized, the swing of the workpiece should be small, and static treatment is also possible, but when the temperature of the solution is too low, map-shaped spots are prone to appear, which is unnatural.
(2) When the aluminum-clad sheet is processed, part of the aluminum-clad layer is damaged and cut off. The outer layer of aluminum is high-quality aluminum, and the inner layer of the clad is miscellaneous aluminum. "Like spots. This phenomenon is often not understood by customers, and manufacturers should do more explanation work to explain the reason, so as not to cause misunderstandings.
(3) Problems in the operation of aluminum coil oxidation process
① The alkaline etching treatment of the workpiece is not thorough, and the original oxide film and dirt in the local area cannot be completely removed;
②The surface of the workpiece is still alkaline if the light-emitting treatment is not performed immediately after the alkali etching;
③ The workpiece has come into contact with foreign objects during the transfer process.
Sanmen United Building Materials Co., Ltd. (aluminum coil manufacturer) is a modern enterprise specializing in deep processing of aluminum surfaces. The products cover a variety of surface effects and are favored by the majority of users. The company has now formed a production and sales of color-coated aluminum, mirror aluminum, brushed aluminum, wood-grained aluminum, stone-grained aluminum, embossed aluminum, etc., with quality control, product development, and after-sales service.
The company will adhere to continuous innovation, integrity-based, quality first, and won the recognition and trust of customers. The company's products are exported to dozens of countries and regions such as India, Vietnam, Russia, South Korea, the Middle East, and Southeast Asia. We look forward to working with our trading partners. Establish a solid, mutually beneficial and win-win strategic partnership. Contact: 0086-576-83381188