The Phosphating Process
Phosphating is a chemical conversion coating process that creates a crystalline or amorphous phosphate layer on the metal surface. This layer improves paint adhesion, corrosion resistance, and overall coating durability. A typical phosphating line follows these 5 steps:
Degrease
Remove oils and contaminants
Rinse
Clean water rinse
Phosphate
Apply phosphate coating
Rinse
Clean water rinse
Seal
Final seal rinse
Iron Phosphate
Iron phosphates produce an amorphous coating layer that provides good paint adhesion and moderate corrosion resistance. They are widely used in powder coating and liquid painting lines for appliances, automotive parts, furniture, and general metal fabrication. Iron phosphates are economical and easy to control.
Zinc Phosphate
Zinc phosphates produce a crystalline coating that offers superior corrosion resistance and paint adhesion compared to iron phosphates. They are the preferred choice for automotive, heavy equipment, and other demanding applications where maximum coating performance is required.
Product Reference
| Product | Type | Description |
|---|---|---|
| ECOPHOS-706 | Iron Phosphate | Liquid iron phosphate for spray applications. Low temperature. |
| ECOPHOS-710 | Iron Phosphate | Iron phosphate for immersion and spray. Medium temperature. |
| ECOPHOS-712 | Iron Phosphate | Heavy-duty iron phosphate for high-contamination environments. |
| ECOPHOS-713 | Iron Phosphate | Iron phosphate with integrated degreasing for combined stages. |
| ECOPHOS-715 | Zinc Phosphate | Zinc phosphate for automotive and heavy-duty applications. |
| ECOPHOS-716 | Zinc Phosphate | Micro-crystalline zinc phosphate for superior corrosion resistance. |
| ECOPHOS-717 | Zinc Phosphate | Tri-cation zinc phosphate for multi-metal substrates. |
| ECOSEAL-810 | Sealer | Non-chrome final seal rinse. Improves corrosion resistance of phosphate coatings. |
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