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Production Description

PN-6 High Corrosion Resistance Water-soluble Sealant

1). Properties
1. A kind of environmentally friendly sealant without hexavalent chromium.
2. Suit for sealing after various zinc plating passivation, the plating usually
appears silver after sealing.
3. Suit for immersion and spray pattern.
4. Can improve the protective effect of a variety of passivation film in neutral
salt spray test of 0.2-0.5 times.
2). Process Flow
Zinc plating → Recycle → Wash → Neutralize (with nitric acid 2~3%)→
Passivate → Wash → Sealing with PN-6 → Dry (60~80℃)
3). Preparation
PN-6 Sealant: 15-50% (Concentration depends on demands of appearance of
the plating, the higher the concentration, the thicker the layer)
Temperature: Room temperature (10-50 ℃)
Drying temperature: 70 ℃ (< 120 ℃)
pH: 8-9 (adjust with diluted ammonia or ethanol ammonia)
Usage method: Immerse the workpiece in the bath and then immediately
remove the workpiece or spray bath solution on the workpiece.
Tank material: stainless steel, plastic or steel tank with a plastic liner.
4).Tips
a. PN-6 and its solution will produce flocculation in the acidic
conditions, so the pH of water must be higher than 7 for a new bath.
b. Remove insoluble flocculation from the bath, put it into wastewater
treatment.
c. PN-6 can not be directly used for barrel plating automatic
production line, as it is easy to make holes on the drum being sealed.
d. Unqualified sealing layer can be stripped by immersing in hot 896
degreasing agent(>75℃) which contains sodium hydroxide no less than 80g/L,floating sheet should be filtered to remove.

The Related Products

There are many kinds of chemicals forpretreament, copper plating, nickel plating zinc plating, chrome plating, alloy plating,Silver plating, gold plating, travalent passivators, sealer and so on.

Advantages of our goods:

 1. We get our own factory to keep the price competitive.

 2. Advanced equipments and labs.

3. Professional QC team to make the qulity nice and steady.


Our company information
 

Wuhan Fengfan Electroplating International Trading Co.,Ltd was founded in 1984, and

is the market leader of Chinese surface finishing industry. With more than 30 years

experience in finishing industry,Fengfan Electroplating has developed several

world leading product lines. Its exclusive products have high efficiency, easy to use and

friendly to environment.