Recommended Anti-corrosion Process Selection (Based on Scenario)

Recommended Anti-corrosion Process Selection (Based on Scenario)
Indoor Drying + Low Cost + Small Batch: Pretreatment → Painting (Alkyd Paint);
Indoor and Outdoor Moderate Corrosion Resistance + Mass Production: Pretreatment → Phosphating → Plastic Spraying (Polyester Powder);
High-Precision Special-Shaped Parts + High Adhesion: Pretreatment → Electrophoretic Coating;
High Corrosion Resistance + Decorative Requirements: Pretreatment → Electroplating (Galvanizing/Chromium Plating/Nickel Plating);
Short-Term Storage/Transportation: Apply Anti-Rust Oil;
Subsequent Secondary Processing Required (e.g., Welding, Painting): Pretreatment → Phosphating (Base Only, Not for Corrosion Protection). Key Considerations
Pre-treatment is essential: Oil stains and scale can cause the coating/plating to "float," leading to flaking and corrosion in a short period of time, even with the best workmanship.
Coating thickness requirements must be met: ≥40μm for spray painting, ≥60μm for spray coating, and ≥5μm for electroplating (galvanizing). Insufficient thickness is the primary cause of corrosion protection failure.
Environmental Suitability: For outdoor applications, avoid spray painting (which has poor weather resistance) and prioritize spray coating or electroplating. For applications involving food contact, choose non-toxic coatings (such as tin plating) or food-grade paint.
Post-Maintenance: If the coating is scratched, repaint/repair it promptly (especially since DC01 lacks corrosion resistance and will quickly rust).