Why are surface conditioners important? The pre-treatment process that affects the adhesion of aluminum coatings.
Surface treatment agents are essential pre-treatments to prevent poor adhesion and peeling of aluminum coatings.
■Cause of Occurrence: Poor adhesion of aluminum is often attributed to paint or curing conditions, but the surface condition before painting has a significant impact. The aluminum surface retains oil, oxide film, processing dirt, and moisture. In this state, the paint film cannot adhere properly. The three processes to check are degreasing, surface preparation, and drying. Weakness in any of these can lead to peeling or blistering. ■Truth: Surface preparation agents not only clean the surface but also play a crucial role in creating a state conducive to paint film adhesion. Even if visible dirt is removed, if the surface is not suitable for painting, quality will not be stable. Variability hides behind defects. ■Improvement Measures: Manage chemical concentration, treatment time, liquid temperature, and drying conditions numerically, and separate conditions by material type such as aluminum, iron, and zinc plating. Please utilize materials that allow you to verify the degreasing, surface preparation, and drying processes.
- Company:永和工芸
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