Phosphating treatment is currently the most widely used pre-coating treatment process, but because the phosphating solution contains heavy metal ions such as zinc, nickel, and manganese, as well as phosphate and sodium nitrite, and other restricted emissions, and the treatment temperature is high, Due to the complexity of the harmless transformation process of wastewater and waste residue, its application is facing increasing environmental pressure.

Silane treatment technology overcomes the above shortcomings and brings a revolutionary change to the field of pre-coating treatment. The treatment effect of silane pre-treatment technology is already comparable to that of zinc-based phosphating.

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Advantages of Silane Technology

1) The film formed by silane technology can replace the traditional phosphating film. The quality of the phosphating film is usually 2 ~ 3 g/m2, and the quality of the Oxsilan coating film is 0.1 g/m2, the difference is about 20 times, and the unit consumption is greatly reduced.

2) Si-O-Me covalent bond has a strong intermolecular bonding force, so the product is very stable, which can improve the anti-corrosion ability of the product. The corrosion resistance after silane treatment is better than that of zinc phosphating. Compared with zirconium products, its performance is obviously superior.

3) Easy to use and easy to control, the bath liquid is made up of two-component liquid, only need to control pH, activation point and conductivity, no need to control free acid, total acid, accelerator, zinc, nickel like phosphating liquid, manganese content and temperature and many other parameters.

4) Save energy, can operate at room temperature or low temperature, and reduce energy costs.

5) Save electricity, 40% of electricity can be saved due to the reduction of the pump and the reduction of power.

6) The treatment time is short, only half of the phosphating treatment time, so the yield can be increased.

7) Excellent environmental protection performance, no harmful heavy metals, no slag, less waste water discharge, easy treatment, if filters and ion exchangers are installed, it can be used in a closed cycle.

8) Multi-metal treatment process: cold-rolled sheet, hot-dip galvanized sheet, electro-galvanized sheet, coated sheet, aluminum and other sheets can be mixed and processed.

9) The process is simple and the process is short. It can reduce the amount of maintenance, do not maintain the surface adjustment, passivation equipment, and does not need to regularly clean the phosphating tank, pipes and nozzles.

10) Compatible with the original coating process and coating equipment, no need to carry out equipment modification, only need to replace the phosphating liquid, it can be put into production.

11) System length reduction: no surface adjustment and passivation procedures are required, which can shorten the processing time, and the new production line can reduce investment and floor space. The use of silanes and the use of phosphating in European automotive lines saves 2.2 million euros in equipment investment.

12) After silane treatment, electrophoresis can be carried out directly without drying. The penetrating power of silane is comparable to that of zinc-based phosphating.