7. Characteristics of phosphating plants
This section looks at immersion phosphating of ferrous metals.
7.1 General
For spray and peel installations, please refer to the article Surface treatment of metals prior to application of organic coatings. Process .
In the case of immersion, the following factors must be taken into account for the proper operation of a bath with a given formulation:
concentration (AcT ) ;
ratio of total acidity (AcT ) to free acidity (AcL ) ;
gas pedal or Fe 2+ content;
immersion time ;
temperature to ± 2 to...
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Characteristics of phosphating plants
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