Paint System Buildup
Paint build-up consists of several layers: primer, intermediate coat, and top coat. Each layer protects and stabilizes the previous one to shield the component.
Physical-chemical mechanism of action
The paint build-up forms a closed protective layer on the metal. The primer bonds with the surface and creates a stable base. The intermediate coat improves adhesion and prevents corrosion, while the top coat shields the entire system and gives an attractive appearance.
Metallurgical relevance & risks during welding
Improper handling can destroy the paint or impair adhesion between layers. This leads to corrosion, cracks, or poor surface quality. When welding, the paint must be removed to ensure a safe joint.
Workshop practice & instructions
Before welding the metal, the paint must be completely removed. This can be done with chemical solvents or mechanical removal. Make sure no residue remains, as it can cause corrosion. After welding, the metal should be thoroughly cleaned and repainted to restore quality.