zinc-calcium phosphate coating without surface conditioner
1. Product description
Znic -Calcium mid-temperature phosphate coating agent, Don’t need the surface conditioner, and do not need to add the neutralizer and the accelerator, so long as use it by diluting with water in proportion under the specified temperature scope, then it will form one even, compact perse phosphating film.
zinc-calcium phosphating film has good anticorrosion performance, may provide the rust prevention for a long time, simultaneously the film has excellent adhesion to each kind of coatings, each overcoatability surpasses the national standards. The solution sediment are few, do not need the frequent clearing.
2 Usage method
2.1 Working solution prepared( calculated by one ton)
a) Add about 500KG water to tank ,then add Zn-Ca phosphate coating agent 167KG, stir evenly and supply remaining water.(Phosphate coating agent : water=1:5)
b) Heat to specified processing temperature.
2.2 Working solution management:
Total acidity: 35-65
Free acidity: 3.5-6.5
Temperature: dipping 60-70 ℃
Time: dipping 4-15min
3. Package and transportation
30 KG/plastic barrel.
storage life is one year under poor light and drying preservation.