产品详情

Transfer production technology of Nickel - free fluorine - free medium temperature sealer for surface treatment of aluminium alloys

Ⅰ.Product features

Nickel free fluorine free medium temperature sealer is a colorless or light amber transparent liquid product, for aluminum anodic oxidation film has a good sealing effect. The product does not contain heavy metals, which can not only solve the problem of heavy metals in wastewater treatment, but also avoid the surface green phenomenon caused by the absorption of nickel salt by the oxide film when the hole is sealed with nickel salt. The product is suitable for transparent film, polishing, electrolytic colored oxide film closure. Nickel-free sealing has the advantages of simple operation, environmental protection, saving water consumption, without the treatment of fluorine and nickel in wastewater, so as to achieve the purpose of reducing costs. Characteristics of nickel - free fluorine - free medium temperature sealer:

1. Environmental protection: nickel free, fluorine free and heavy metal free;

2. Sex ratio: high corrosion resistance, strong light resistance;

3. Tasteless: no pungent smell;

4. Convenient adjustment of tank liquid, reliable and stable hole sealing quality;

5. It has strong ability to inhibit powder and frost and excellent anti-impurity ion performance;

6. Stability: The environmental aging test proved that the product after several years of exposure, the appearance is very stable, almost no change.

Nickel - free fluorine - free medium temperature sealants are available in one - component solid and one - component liquid two products.

Ⅱ.Comparison of ni - free fluorine - free medium temperature sealant and ni - containing sealant:

Item	Nickel free fluorine free medium temperature sealer	nickel sealer
Environmental protection	fluorine free, nickel free, no heavy metal in line with the EU RoHS directive	Containing fluorine and nickel
Environmental treatment costs	less than 5 yuan/ton of waste water	50-60 yuan/ton of waste water
The operation	simple and requires only one kind of medicine	usually requires two or more
Adjust the maintenance	Only need to supplement the sealer, with automatic PH adjustment function	The PH value needs to be adjusted frequently, which is easy to lead to muddy tank liquid. aging

Ⅲ.Product operation process parameters

Distribution groove composition:

Fluorine-free and nickel-free sealant（liquid）: 50 g/L

Or Fluorine-free and nickel-free sealant（solid）: 5~10 g/L

Deionized water：The remaining amount

Process parameters:

Fluorine-free nickel free sealant： 50-80 g/L

PH： 6.7 0.2 mm

Time： 1-1.5 min/mu

Temperature：70-75 ℃

Ⅳ.Tank maintenance:

1. Analyze the content of pore sealing agent and PH value of tank liquid every day to make them within the normal process range;

2. There will be a little precipitation more or less when the sealing liquid is used for heating for a long time. Therefore, it is necessary to clean the tank regularly according to the production situation.

Ⅴ.Packaging, storage and transportation

Packing: plastic drum (25kg/ drum)

Storage: store in cool, dry and well ventilated area, away from fire and heat source.

Detailed project feasibility analysis report is available on request.

Product technology for large-scale production of mature technology, technology transfer fee call to discuss.

Fluorine-free nickel-free medium temperature sealer (solid type)