Technical specifications
METALFIP 303 is a specific phospho-pickling agent for painting lines, to be used where a strong deoxidizing action combined with a phosphating action is required.
METALFIP 303 is formulated to be low-foaming, making it suitable for use in spray machines even at temperatures of 40 °C. It effectively removes machining, protective, and stamping oils from metal surfaces, while simultaneously developing a phosphate coating ideal for paint adhesion.
Physico-Chemical Data
Parametro | Valore |
|---|---|
Appearance | Yellow liquid |
Density at 20 °C | 1.090 ± 0.01 g/ml |
Odor | Pungent |
pH | <1 |
Solubility in Water | Complete |
Use and Applications
METALFIP 305 should be used in immersion tanks, diluted in water at variable percentages depending on the operating temperature.
Immerse the parts in the prepared solution at temperatures between room temperature and 40 °C. During the cold season, the solution can be conveniently heated using rubber coils with steam passage, or Teflon-coated heating elements, so as not to excessively prolong 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.
To avoid alterations in the bath, which would compromise its lifespan, the parts must be degreased beforehand.
Unlike pickling baths for stainless steel, iron pickling baths are difficult to top up, and it is recommended to replace the bath once it is exhausted.
In any case, the lifespan of iron pickling baths rarely exceeds a few months.
Applicazione | Concentrazione |
|---|---|
Precautions
Use iron tanks lined with PVC, or, if small in size, polyethylene or polypropylene.
Power supply
To obtain the concentration in g/l, multiply the value obtained by the fixed number 1.43
Then bring the concentration to the required value.
Key Points
Nitric-free
Excellent bath life
Pickling action
Short contact times
Applications
Pickling of iron and carbon steel
Removal of processing dust
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