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Advantages of using silane treatment agents

Release time:

2022-08-09 09:56

The chemical conversion film technology of silane treatment agent has been applied.10For many years, with China's increasing attention to environmental protection, silane treatment agents have been widely used in the metal industry pretreatment line, replacing the traditional phosphating process, silane treatment of nano-film to meet the strict performance requirements of enterprises. Compared with the traditional phosphating, silane treatment agent pretreatment method has the following obvious advantages.

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First, the overall cost of decline

（1) Silane treatment agent has no waste of harmful heavy metals and harmful acid salts, reducing wastewater discharge and wastewater treatment costs. The phosphate content in the phosphating solution is about15000ppmThe content of zinc, nickel and manganese is about3000ppm. When the late washing reaches the dynamic balance of overflow, the phosphate in the wastewater is about.1500ppm, zinc, nickel, manganese approx.300ppmThe cost of wastewater treatment is about.8Yuan/tSilane does not contain phosphorus, zinc, nickel, manganese, silicon content of about40ppmZirconium content approx.200ppm. When the late washing reaches the dynamic balance of overflow, the wastewater contains silicon.4ppm, Zirconium20ppm, wastewater treatment costs less than per ton1Yuan. With an annual350Ten thousand square meters of regular household air conditioning treatment line, for example, each square meter produces about 5LWastewater, annual treatment of wastewater about 17500Tons. Phosphating wastewater treatment costs more than silane12.25In addition, the solid waste generated by the phosphating process is 3-5 times that of the silane treatment process.

Silane treatment agent can be carried out at room temperature without heating; basically no slag, no slag removal and corresponding chemicals, no heat exchanger and corresponding chemical cleaning, no slag removal chemical emissions. This greatly reduces the workload.

Second, maintenance costs are down

1.Phosphating solution needs every2~3Transport to the reserve once a month for sedimentation and slag removal;3~6Pour the tank once a month, and remove the phosphating slag in the pipeline with good tank wall by chemical method after pouring. The nozzle needs to be disassembled and cleaned with chemicals once a week. The heat exchanger needs to be cleaned every2~4Chemical cleaning once a week, otherwise it will affect the phosphating effect. The use of a silane treatment agent can make the above maintenance work to be canceled.

2.The control of the bath is simpler, reducing the workload of on-site feeding and testing.

3.Phosphating needs degreasing, surface adjustment, phosphating three steps. Surface adjustment requires weekly groove change,PHThe value and conductivity should be tested; the content of free acid, total acid, promoter, zinc, nickel and manganese ions should be detected in the phosphating tank. The silane treatment agent only consists of degreasing and silane treatment, and the silane tank only needs to be detected.pH, conductivity and activation point; salt spray resistance 500h and paint film adhesion level 0 after silane treatment and powder spraying.

 

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