Acid Pickling Stains

Pickling residue contamination forms during acid treatment of metals. Residue builds up as inorganic coatings on surfaces. Before cleaning, layer adheres tightly and shows uneven patterns. Patterns appear crystalline and patchy, so removal demands careful laser application. Laser cleaning targets residue effectively because energy breaks bonds without damaging base material. On steel, contamination resists ablation due to dense structure. Aluminum surfaces exhibit looser buildup, so process achieves faster results. Challenges arise from residue's heat absorption, which causes scattering during exposure. After treatment, surface regains uniformity and avoids recontamination. In observations, material-specific behaviors influence cleaning efficiency. Process removes layers successfully in most cases.