Zinc-nickel alloy trivalent chromium blue passivation(MX-ZN51L)

MX-ZN51L is the environment-friendly zinc nickel alloy passivation, up to RoHS request, no hexavalent involved. Easy to operate, brightly and evenly blue-colored on zinc nickel alloy plating. After passivation, 8μm zinc nickel alloy plating could reach more than 720 hours in NSS(neutral salt spray ) test. After passivation, and adding environment-friendly water-soluble blocking agent, achieve matt finish of zinc nickel alloy passivation.



MX-ZN610-L zinc nickel alloy trivalent chromium blue passivation


Features:

1. Environment-friendly zinc nickel alloy passivation, up to RoHS request, no hexavalent involved;

2. Easy to operate, brightly and evenly blue-colored on zinc nickel alloy plating;

3. After passivation, 8μm zinc nickel alloy plating could reach more than 720 hours in NSS(neutral salt spray ) test;

4. After passivation, and adding environment-friendly water-soluble blocking agent, achieve matt finish of zinc nickel alloy passivation.

Process and operation condition:

Operate scope

  Value

MX-ZN610-LA

50ml/L

MX-ZN610-LB

75ml/L

PH

4.5

Temperature

25℃

Time

60-120s

 

Maintenance:

MX-ZN610-L replenishment is in proportion to the treatment area;

Add 1L MX-ZN610-L (MX-ZN610-LA & MX-ZN610-LB) every time deal with 2000dm2plating pieces, there is a discrepancy according to product requirement and input;

As for barrel plating, input is large, increase the amount of MX-ZN610-L replenishment properly to keep passivation’s concentration and great corrosion;


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