Technical specifications
FIPROPHOS 514 is a single-component liquid phospho-degreaser, specifically designed for the treatment of ferrous materials, galvanized steel, and aluminum. FIPROPHOS 514 creates an amorphous phosphate layer of high compactness and a thickness of 10 mg/dm² on the treated surfaces, which provides an excellent bonding base for liquid, powder, or electrophoretic paints. Correct use of the product requires a subsequent rinse with continuous partial renewal and, if possible, a final rinse with demineralized water. Appropriate final passivation further improves corrosion resistance results.
Use and Applications
FIPROPHOS 514 is used as a pre-painting treatment, with superior performance compared to medium-weight phosphate-degreasers, for accessory parts in the automotive, household appliance, metal furniture, and sheet metal products in general.
Parametro | Valore |
|---|---|
BATH PREPARATION
Fill the tank with clean mains water up to approximately three-quarters of its volume
Start the recirculation pumps and bring to the working temperature
Add 15-60 kg (13-50 liters) of FIPROPHOS 514 for every 1000 l of bath
Bring the bath to the exact volume and working temperature, leaving it to recirculate for 15-20'
Carry out the working parameter checks; it may be necessary to bring the pH value within the operating range, through small additions of ALCAFIP 250
Applicazione | Concentrazione |
|---|---|
Bath control
Points (total acidity)
Take 10 ml of bath using a calibrated pipette, place it in a 250 ml conical flask, add approximately 100 ml of distilled water and 4 - 5 drops of Phenolphthalein indicator.
Titrate with 0.1 N Sodium Hydroxide (NaOH) until the color changes from colorless to a stable pink for at least 20 seconds.
The number of ml of 0.1 N Sodium Hydroxide used to achieve the color change of the sample represents the bath points. A bath of FIPROPHOS 514 prepared at a concentration of 20 g/l and brought to the working pH, has a points value of approximately 3.9.
Determination of pH
Take a bath sample (approximately 100 ml) and allow it to cool to approximately 20 °C. Determine the pH value, preferably with a pH-meter previously calibrated to pH values of 4 and 7 (the use of a fluoride-ion resistant electrode is recommended).
Any corrections are made:
To lower the pH, with FIPROPHOS 514 or with FIPROPLUS 709 or FIPROPLUS 710 (this product must be dosed in very small quantities)
With ALCAFIP 250 in small quantities to raise the pH
Power supply
The bath is replenished with FIPROPHOS 514 in as a function of the points (total acidity).
To obtain the concentration in g/l, multiply the value obtained by the fixed number 5.1.
Then bring the concentration to the required value, adding 5.1 Kg of product per 1000 L of bath for each missing point.
During the aging of the bath, a physiological increase in pH and/or the points may occur. In this case, the replenishment of the bath will be managed to maintain the value of the pH within the operating range, until the tank is renewed.
Warnings
If an accumulation of oil is noticed on the surface of the bath, partial skimming is recommended to prevent contamination of the treated material.
For the tanks and other parts of the system, the use of stainless steel is recommended (preferably AISI 316 or 316 L).
The pumps to be installed in the individual zones must have characteristics that ensure a spray pressure of at least 1.5 atm in all active stages, with the exception of the final passivation, which allows a lower pressure (0.8 - 1 atm). Higher pressures can facilitate degreasing.
Prolonged exposure of FIPROPHOS 514 to light and heat can cause color variations.
Slight differences in the appearance of the product do not compromise its efficiency and operational performance.
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