MX-ZN-D-51C zinc nickel alloy trivalent chromium iridescent
passivation
Features:
1. Environment-friendly zinc
nickel alloy passivation, up to RoHS request, no hexavalent involved;
2. Easy to operate, brightly and
evenly 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 bright layer of zinc
nickel alloy passivation.
Process and operation
condition:
|
Operate scope
|
Value
|
|
MX-ZN610-C
|
70-100ml/L
|
|
PH
|
1.8-2.2
|
|
Temperature
|
45℃-55℃
|
|
Time
|
30-60s
|
Maintenance:
Mix MX-ZN610-C with 68% nitric acid in the proportion of 6-8:1（standard 7:1）, then use it to adjust pH
value, suitable for automatic adding apparatus to replenish;
MX-ZN610-C replenishment is in proportion to the treatment
area;
Add 1L
MX-ZN610-C every time deal with 3000dm2plating pieces, there is a discrepancy according to product
requirement and input;
As for barrel plating, input is large, increase the amount of
MX-ZN610-C replenishment properly to keep passivation concentrate;
