Key Functions of Wax Emulsion in Dacromet Coating

🔧 Key Functions of Wax Emulsion in Dacromet Coating

• Enhanced coating density‌: Fills micro-gaps between zinc/aluminum flakes, improving moisture barrier properties with salt spray resistance >1200 hours.
• Optimized surface properties‌: Reduces friction coefficient to 0.06–0.18, preventing thread adhesion during nut assembly, and improves coating uniformity and tactile feel.
• Environmental compatibility‌: Water-based system aligns with Dacromet's pollution-free profile, generating no wastewater or emissions.

⚙️ Process Flow for Dacromet-Treated Nuts with Wax Emulsion

Critical Control Points:‌

• Coating ratio‌: Wax emulsion concentration at 1–3% to avoid reduced adhesion due to excess.
• Curing temperature‌: Maintain 290–310°C to ensure proper wax film formation and bonding.

⚖️ Core Advantages vs. Traditional Hot-Dip Galvanizing

📌 Application Precautions

• Compatibility validation‌: Ensure wax emulsion compatibility with chromic acid passivators to prevent coating delamination (pre-testing recommended).
• Storage requirements‌: Store uncured coating solution in sealed, dark conditions to inhibit wax oxidation.
• Cost-benefit analysis‌: Higher upfront cost (~2× hot-dip galvanizing) offset by 40% lower lifecycle expenses.

💎 Summary