Technical specifications
FIPROPHOS 546 is a liquid formulation based on alkaline phosphates used to simultaneously degrease and phosphate iron and steel surfaces prior to painting. The coating obtained consists of iron oxides and phosphates, and its weight is generally between 0.2 and 0,4 g/m².
FIPROPHOS 546 can also be used to degrease aluminum, zinc and their alloy parts.
Use and Applications
FIPROPHOS 546 must be used in aqueous solution, by spray, with the following operating parameters:
Treatment time: 1 ÷ 3 minutes
Operating temperature: 40 ÷ 60°C
Concentration: 10 ÷40 g/l
Bath points: 7.2 ÷ 28.8 total acidity points (at make-up without adjustment of pH )
pH of the bath at 20 °C: 4.5 ÷ 5.3
Parametro | Valore |
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PREPARATION OF SOLUTIONS
For every 1000 liters of solution, use from 10 to 40 kg of FIPROPHOS 546.
Fill the tank with water and bring it to the operating temperature; then, add the pre-set quantity of FIPROPHOS 546 with the pumps running and circulate the solution for at least 10 minutes before introducing the first material to be treated.
The Fiprokim Technical Service will provide the optimal conditions of use during the plant start-up phase.
Applicazione | Concentrazione |
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Bath control
Take 20 ml of sample, add 4-5 drops of phenolphthalein indicator and titrate with a 0.1 N sodium hydroxide solution until a persistent pink color.
The number of ml of 0.1 N sodium hydroxide used represents the bath points which, for a preparation at 10 g/l, must be approximately 7.2.
Power supply
For each point consumed, add 1.4 kg of FIPROPHOS 546 per 1000 l of bath.
Warnings
All parts in contact with FIPROPHOS 546 can be made of AISI 316 L steel; avoid yellow alloys in pumps and valves.
Store the product in its original packaging, in a cool and dry place, protect from frost.
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