Automated Local Anodizing
Local anodizing forms porous oxide layers on aluminum only where needed – for corrosion protection or as a pre-treatment for adhesive bonding. Unlike traditional immersion-based anodizing, it works without masking and submerging the part. At Fraunhofer IFAM in Stade, the technology has been implemented in a fully automated cell with a robotic end effector that applies the electrolyte precisely, controls force and contact, removes residues inline and rinses the treated area directly – even on components with complex 3D geometries. The process ensures a reproducible, contaminationfree surface. It is suitable for both, manufacturing as well as repair applications, from weld seams to structural joints up to large components.
Key advantages
-Oxide layers only on functional areas
- Fully enclosed and automated process
- No masking required – saves time and resources
- Inline rinsing, neutralization and suction
- Closed-loop control via force feedback and trajectory planning
- Ideal for numerous industries, e.g., aviation, aerospace, automotive, rail vehicle construction, and repair technologies
The experts for Automation and Production Technology at Fraunhofer IFAM in Stade develop this process for industrial integration – with a focus on digital control, process monitoring and high surface quality under demanding conditions.
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