Intermediary Cleaning

Physical-Chemical Mechanism of Action

Intermediate cleaning is a process where excess penetrant is removed from the surface. This is done through chemical reactions or mechanical actions to ensure that no penetrant residue remains on the surface.

Metallurgical Relevance & Risks in Welding

If intermediate cleaning is not done properly, penetrant residue can cause incomplete dye penetration. This can lead to inspection errors and potential quality management issues.

Workshop Practice & Action Guidelines

For intermediate cleaning, use a clean, dry solvent or a mild detergent. Make sure all surfaces are completely cleaned and no penetrant residue remains. Wait at least 5 minutes after cleaning before applying the developer.