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What are the characteristics of silane treatment agent compared to traditional phosphating?

Release time:

2022-08-09 09:56

The silane treatment agent is a pretreatment chemical conversion film technology based on fluorozirconic acid (salt), and a nano-ceramic conversion film is formed on the metal surface after silane treatment. Is a new alternative to the traditional phosphating liquid environmental protection products. Deposited on the surface of the metal substrate to form a nano-ceramic conversion film with a dense structure, which has strong corrosion resistance, and the subsequent organic coating has strong adhesion, which can greatly improve the corrosion resistance of the metal coating and extend the corrosion resistance time.

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Silane treatment agent is mainly used in the film-forming treatment of iron and steel workpieces, forming a golden to blue film on the surface of the workpiece, improving the adhesion between the workpiece and the coating, and having anti-corrosion function. So, compared with the traditional phosphating, what are the characteristics?

1. Easy to use, easy to control, the bath liquid is a single component liquid, just adjust the PH value and conductivity. There is no need to control many parameters such as free acid, total acid, accelerator and temperature like phosphating solution.

2. Silane treatment agent is an environmentally friendly product, no harmful heavy metals, phosphating, less slag, waste water discharge, easy to handle, the installation of filters can achieve a closed cycle.

3. Do not need nitrite promoter, to avoid its decomposition products on the human body damage.

4. Multi-metal treatment process: cold-rolled sheet, hot-dip galvanized sheet, electrolytic galvanized sheet, aluminum and other sheet mixed treatment;

5. Silane treatment agent has no surface conditioning, passivation and other processes, less production processes, short treatment time, help to improve the production capacity of the factory. The new production line can be shortened, saving equipment investment and occupied area.

6. Use at room temperature, energy saving. The silane bath does not require heating, and conventional phosphating typically requires 35 to 55°C. First of all, compared with the previous treatment with phosphating, the use of silane treatment agent is more energy-saving, whether it is kinetic energy or heat energy, can save a lot of resources.

7. It does not conflict with the existing equipment process, and can be directly replaced by silane treatment process without equipment modification. It is compatible with the existing coating treatment process and can be matched with various paints and powder coatings currently used.

8. Since environmental protection is a product of new technologies, in wastewater treatment and residue treatment, silane treatment agents basically do not require slag removal equipment, and relatively speaking, wastewater treatment can save resources.

 

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