-
ABOUT
-
-
-
-
CONTACT
Main Factors Causing Non-Uniform Oxide Film Color in Door and Window Profiles
During the dyeing of window and door profiles, excessive swinging within the dyeing tank can lead to uneven contact between the solution and the profile surfaces—particularly at the edges versus the center—due to the large surface area of the profiles. This, in turn, results in inconsistent coloration of the oxide film on the profile surfaces.
During the processing of aluminum-clad door and window profiles, the localized aluminum cladding layer may be damaged. The outer cladding layer is made of high-quality aluminum, while the inner layer being clad is mixed-grade aluminum. Due to the significant difference in material properties between the two, oxidation of the aluminum is accelerated, resulting in surface blemishes on the profiles. Customers typically find this phenomenon difficult to understand and unacceptable; therefore, it is essential to clearly explain the underlying causes to them beforehand.
In the operation of the oxidation process, various issues may arise, such as incomplete alkaline etching of workpieces, an alkaline surface on window and door profiles, and failure to perform polishing after alkaline etching. To address these problems, we must identify their root causes and implement appropriate countermeasures. For instance, by controlling the amplitude of oscillation of window and door profiles within the etching tank, we can prevent uneven coloration of the surface oxide film.
Previous page:
Next page:
Henan Mingmei Magnesium Technology Co., Ltd.
Phone:+86-392-3658888 / 3659999
Email:hnmingmei@163.com
Address: Hebi National Economic and Technological Development Zone, Henan Province
Mobile
Copyright © Henan Mingmei Magnesium Technology Co., Ltd.