Technical specifications
FIPROPHOS 540 is a liquid alkaline phosphate formulation used to degrease and simultaneously phosphatise iron and steel surfaces before painting them. The coating obtained consists of iron oxides and phosphates and its weight is generally between 0.2 and 0.4 g/m².
FIPROPHOS 540 can also be used to degrease aluminium, zinc and their alloys.
Usage and Applications
FIPROPHOS 540 should be used in aqueous solution, by spraying, with the following operating parameters:
Treatment time: 1 ÷ 3 minutes
Temperature of use: 40 ÷ 60°C
Concentration: 10 ÷ 20 g/l
Bath score: 7.2 ÷ 14.4 points total acidity
pH of the bath at 20 °C: 4.5 ÷ 5.5
Parametro | Valore |
|---|
PREPARATION OF SOLUTIONS
For each 1000 litres of solution use 10 to 20 kg of FIPROPHOS 540.
Fill the tank with water and bring it up to working temperature; then add the predetermined quantity of FIPROPHOS 540 with the pumps running and circulate the solution for at least 10 minutes before the first material to be treated enters.
Applicazione | Concentrazione |
|---|
Bathroom control
Take 20 ml of sample, add 4-5 drops of phenolphthalein indicator and titrate with a 0.1 N sodium hydrate solution until constant pink colour.
The number of ml of 0.1 N sodium hydrate employed represents the bath score, which, for a 10 g/l preparation, should be about 7.2.
Power supply
For each point consumed add 1.4 kg of FIPROPHOS 540 per 1000 l of bath.
Storage
Storage in original packaging, in a cool, dry place, protect from frost.
Warnings
All parts in contact with FIPROPHOS 540 can be made of AISI 316 L steel, avoid yellow alloys in pumps and valves.
