In an era where the adoption of aluminum parts is advancing, the concept of substrate management to prevent paint peeling.
In the lightweight automotive parts, the adhesion of aluminum coatings and the management of pre-treatment become important.
■Cause of Occurrence: The importance of aluminum parts is increasing due to trends in weight reduction and cost management. Aluminum is lightweight and has excellent workability, but if painted with the same approach as iron, issues such as poor adhesion, paint peeling, pinholes, and blisters can occur. The three points to check are the residue of processing oil, the condition of the oxide film, and the drying after pretreatment. ■Truth: Peeling is not just a matter of paint selection. With weight reduction, shapes have become more complex, increasing ribs, holes, corners, and thin sections, making it easier for cleaning agents and moisture to remain. Even if the surface is clean at the time of shipment, peeling can become apparent during assembly or storage. ■Improvement Measures: Treat aluminum as a material where quality differences arise during pretreatment, managing degreasing, surface adjustment, and drying with numerical records. In the event of peeling, revert to check the pretreatment, film thickness, and curing conditions of the same lot. Please utilize documents that allow you to verify pretreatment, drying, and film thickness conditions.
- Company：永和工芸
- Price：Other
