METALFIP 303 is a specific phospho-pickling agent for painting lines, to be used where an energetic deoxidizing action combined with a phosphating action is required.
METALFIP 303 is formulated with low foaming, therefore it is suitable for use in spray machines even at temperatures of 40 ° C. Effectively removes processing, protective and molding oils from metal surfaces while simultaneously developing a phosphate coating ideal for anchoring paints.
Density at 20 °C
1.090 ± 0.01 g/ml
Solubility in Water
Usage and Applications
METALFIP 305 must be used in immersion tanks, diluted in water at variable percentages depending on the operating temperature.
Immerse the pieces in the solution thus prepared at temperatures between room temperature and 40 ° C. During the cold season, the solution can be conveniently heated, with rubber coils and steam passage, or Teflon-coated resistances, so as not to excessively lengthen the pickling times.
The immersion time can vary from a few minutes to over 1 or 2 hours, depending on the type of iron, its thickness, the type of oxide and the temperature.
The pieces, in order to avoid alterations in the bath, the duration of which would be compromised, must be previously degreased.
Unlike stainless steel pickling baths, iron pickling baths are difficult to refill and it is recommended to replace the bath once it has run out.
In any case, the duration of the pickling baths for iron hardly exceeds a few months.
Use iron tanks lined with PVC, or if small in polyethylene, polypropylene.
Removal of thermal oxides (calamines) from raw materials or semi-finished products
Removal of processing oxides and oily residues or emulsions
Etching, pre-painting, pre-conversion treatments
Burnishing and satin finishing
Final cleaning of the finished product, with preservation of tolerances
Excellent longevity of the baths
Short contact times
Iron and carbon steel pickling
Removal of processing dust