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TR-391 Zinc - Nickel Alloy Blue Trivalent Chromium Passivation

TR-391 Zinc - Nickel Alloy Blue Trivalent Chromium Passivation

  • Highlight

    Nickel Alloy Trivalent Chromium Passivation

    ,

    TR-391 Trivalent Chromium Passivation

    ,

    Blue Trivalent Chromium Passivation

  • Type
    Blue Trivalent Chromium Passivation
  • Temperature
    25-40℃
  • PH
    4.0-4.8
  • Time
    25-55s
  • Place of Origin
    CHINA
  • Brand Name
    FENGFAN
  • Model Number
    TR-391
  • Minimum Order Quantity
    25kg
  • Packaging Details
    Plastic barrel
  • Payment Terms
    T/T, L/C

TR-391 Zinc - Nickel Alloy Blue Trivalent Chromium Passivation

TR-391 Zinc - Nickel Alloy Blue Trivalent Chromium Passivation

1. FEATURES

Environmentally friendly blue passivation without hexavalent chromium, suitable for rack and barrel plating.

A dense blue passivation layer can be formed on the zinc nickel alloy coating, which has strong anti-corrosion ability.

The passivation solution has a long service life and is easy to operate and maintain.

2. PROCESS FLOW
Zinc nickel alloy plating → Rinsing → Antioxidant film removal → Rinsing → Immersion in TR-391 → Rinse →Sealing → Dry

3. OPERATION CONDITIONS

Operation Conditions Optimal Operating Range
TR-391A 25ml/l 20-30ml/l
TR-391B 50ml/l 40-60ml/l
pH Value 4.5 4.0-4.8
Passivation Time

Rack plating 45s

Barrel plating 30s

Rack plating 35-55s
Barrel plating 25-35s
Passivation Temperature 25℃ 25-40℃


Note: Before passivation, diluted hydrochloric acid with a pH value of 2-3 is required for antioxidant film removal treatment.