AiVibeTextile & Automotive Manufacturing
Automotive Paint Defects
Automotive paint defects are flaws in a vehicle's coating, such as dirt inclusions, craters, runs and sags, orange peel, pinholes and colour mismatch, detected by inspection before the body leaves the paint shop.
Dirt and fibre inclusions occur when particles land in wet paint. Craters form where contamination such as oil or silicone prevents the paint from wetting the surface. Runs and sags result from excessive film build or low viscosity, orange peel describes a textured surface resembling the skin of an orange, and solvent popping and pinholes come from trapped solvent or air escaping during curing. Mottling, colour mismatch, poor adhesion and sanding marks are further common defects.
Paint appearance strongly influences perceived vehicle quality, so every body is inspected. Traditionally, inspectors examine bodies in highlight tunnels with patterned lighting that makes surface disturbances visible. Automated systems based on deflectometry and cameras now detect, classify and map defects, guiding repair by sanding and polishing or by repainting.
Root causes lie in booth cleanliness and airflow, substrate preparation, contamination control, application settings and oven profiles, so defect data are used to direct corrective action. Surface appearance such as orange peel and gloss is measured with dedicated instruments. Automated inspection must be validated against agreed defect catalogues and acceptance criteria set by the vehicle manufacturer.
Key points
- Common defects: dirt, craters, runs and sags, orange peel, pinholes
- Craters are often caused by contamination such as oil or silicone
- Inspected in highlight tunnels or by automated vision systems
- Defect data guide corrective action in booths, preparation and ovens
Where AiVibe comes in
AiAmbA use cases include visual inspection on automotive lines, with existing lines retrofitted with edge devices.
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