Phosphating Agent

Winsir Zinc-Based Phosphating Agent WSB-1 is a room-temperature phosphating solution for cold-rolled steel. It forms a film quickly. The film is uniform and dense. It has excellent corrosion resistance. This zinc-based phosphating agent works on various workpieces and sheet materials. It does not yellow or rust easily. The bath produces low sludge and is easy to clean. It is suitable for both spray and immersion pre-treatment before painting. It works well with electrophoretic, powder, baking, and spray painting processes. Adhesion is excellent with outstanding deformation resistance. Bath preparation and addition use the same product. Operation is simple and bath performance is stable.

Winsir Zinc-Based Phosphating Agent WSB-1 comes as a system. The phosphating agent is a light green liquid. The accelerator is a yellow liquid. The ratio is 5% to 8% for the phosphating agent and 0.3% to 0.5% for the accelerator. Treatment temperature is room temperature. Treatment time is 6 to 12 minutes for immersion and 3 to 5 minutes for spray. Salt spray resistance is excellent in 3% NaCl solution. Total acidity for immersion is 20 to 40. Total acidity for spray is 18 to 30. Free acidity for immersion is 0.5 to 1.5. Free acidity for spray is 0.3 to 1.2. Accelerator points range from 1.5 to 2.5.

Winsir Zinc-Based Phosphating Agent WSB-1 follows a standard process. The flow is degrease → water rinse → rust removal → neutralization → water rinse → surface conditioning → phosphating → water rinse → drying. Before phosphating, remove all oil, rust, scale, and dirt from the metal surface. Use overflow rinsing for best results. Good surface conditioning refines crystals and accelerates film formation. For bath preparation, fill 2/3 with water. Add 50 to 80 L of this zinc-based phosphating agent per 1000 L and mix well. Reduce free acid to the working range. Add 3 to 5 L of accelerator. Fill to working level and mix well.