BATCH AND SPOT REPAIRS FORCOLOR-ANODIZED PANELS

摘要

This paper discusses repair methods for the damaged electrolytic-colored anodized panels. Forrnsurface damages (scratches and chipped oxide) without any dents, there are two approaches tornrepair them. The first is a full panel repair, stripping off the oxide coating, then re-growing andrnre-coloring the anodic oxide using a regular color-anodization process to match thickness andrncolor. This method has been successfully demonstrated in our laboratory and is a good means ofrnrepairing damaged panels within a large anodizing facility. The second approach is a spot repairrnmethod, which can repair damaged panels without disassembly. After numerous attempts, somernvery challenging technical issues were identified: (1) noticeable borderline between the originalrnand repaired anodized surfaces, and (2) lack of an electrolytic method available in the market forrnspot coloring the repaired area.