Qingdao ICON Medium temperature black film phosphating solution

 mid-temperature black phosphating solution 

1 Overall

mid-temperature phosphating liquid don’t need the surface modifier procedure, 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. This 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

2.1 Working solution prepared( calculated by one ton)

  a) Add about 500KG water to tank ,then add Midium phosphating liquid 167KG, stir evenly and supply remaining water.(Phosphating liquid : water=1:5)

  b)  Heat to specified processing temperature.

2.2 Working solution management:

   Total acidity: 40-60

   Free acidity: 4-7

    Temperature: dipping 60-70 °C 

Time: dipping  10-15min

2.3 Supplement and adjustment of working solution(calculated by 1 ton):

    The concentration of working solution changes continuously in the continuous processing process, so make a measure and add original liquid to assure the best status.

    Generally add 4KG original liquid in one ton working solution, which can improve one points of total acidity each time.

3 Package and transportation

3.1  30 KG/plastic barrel, 200Kg/plastic barrel.

3.2  storage life is one year under poor light and drying preservation.