Bosing KT-X TypeZinc alloy blackening solution for room temperature rapid blackening is suitable for blackening treatment of zinc alloy and galvanized workpieces to enhance their corrosion resistance and decorative properties. This product achieves excellent processing effects on both color zinc and white zinc coatings. It forms a uniform, fine, corrosion-resistant, and strongly adherent black decorative film on the surface of galvanized workpieces, with a pure color. The product is also applicable for blackening treatment of zinc alloy workpieces. It features simple operation, rapid blackening, stable performance, energy saving, and environmental protection.
I. Process Flow:
Galvanized workpiece cleaning and degreasing (This step can be skipped if the surface is already clean and oil-free)àWater Washedà15%～30%Hydrochloric acid or 2-5%Nitric acid activation (approx.)5～15Instant）àWater WashedàDiscoloration (approx.)0.5～3Minute）àWater WashedàDry (apply oil and wax if necessary).
II. Main Technical Specifications
1Physical and Chemical Properties: This product is a blue transparent liquid, non-flammable and non-explosive, non-volatile, and free from heavy metals such as arsenic, chromium, mercury, thallium, and lead that pollute the environment.
Specific Gravity: 1.1±0.05; pH: 2.0-3.0; Blackening Amount: 4-6M2/liter.
2Corrosion Resistance: 3%Copper Sulfate Drop Test: >100 seconds; Salt Spray Test: >70 hours
3Abrasion resistance: rubbed 1,000 times with fine white cloth, even force applied back and forthNo base metal is visible above this level.
III. Product Packaging and Storage
Packaging: 25-Gallon Plastic Drumkg.
Store: Keep in a cool, dry place.Two years shelf life guaranteed.
