JW-812B Trivalent Chromium Blue-White Passivation Agent
This product is formulated by blending multiple high-efficiency ionic surfactants, etchants, and other additives.
Category:
Detailed description:
01
This product is formulated by blending multiple high-efficiency ionic surfactants, etchants, and other additives.
02
This product is non-toxic, non-flammable, and easily washable with water, ensuring safe use.
03
It offers rapid degreasing, suppresses acid mist, and accelerates the removal of oil and rust, effectively preventing over‑corrosion of the substrate.
Process and Operating Procedures
Galvanizing → Three-stage water rinsing → Activation → Water rinsing → Trivalent blue-white passivation → Water rinsing → Hot-air drying
Activation
| 67.5% nitric acid | 5–10 ml/L | |||
| Temperature | Room temperature | |||
| Time | 5–20 seconds | |||
Trivalent blue passivation
| Automatic line | Manual line | |||||||
| JW—812B | 30–50 ml/L | 40–60 ml/L | ||||||
| pH value | 1.8–3.0 | 1.8–3.0 | ||||||
| Temperature | Room temperature | Room temperature | ||||||
| Time | 15–60 seconds | 10–20 seconds | ||||||
| Stir | Air stirring | Air stirring | ||||||
Keywords:
JW-812B Trivalent Chromium Blue-White Passivation Agent
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