Technical specifications
METALFIP 312 is an acidic flux designed for the removal of surface oxides and the conversion of aluminium and its alloys in pre-chromatation and pre-phosphochromatation.
Physical-Chemical Data
Parametro | Valore |
|---|---|
Appearance | Colourless liquid |
Smell | Pungent |
Density | ~1.11 |
PH | ~1 |
PH | ~1 |
Usage and Applications
For an excellent deoxidation result, it is recommended to operate in multi-stage treatment plants to ensure optimum cleaning of the artefacts.
Applicazione | Concentrazione |
|---|
Controlling solutions
The control is performed by determining the Total Acidity of the bath as follows:
10cc of bath is taken.
. a few drops of methyl orange indicator are added
. we titrate with NaOH N/10 solution until red to yellow colour
The number of cc used in the titration can be traced back to the concentration of the bath using the following table:
Power supply
Bath reconcentrations are to be carried out at the rate of 2 g/litre of product for each point less than the set titration value.
Precautions
Everything that comes into contact with the solution must be made of 316/L stainless steel or anti-acid material.
Highlights
Fluoride-free
Extremely long bath life
Pickling and phosphating action
Low foaming
Applications
Prepainting lines
Degreasing oils and protectants
Cleaning and degreasing aluminium and alloys
Preconversion treatments (e.g. prechromating)
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