Perfect in surface activation
In addition to a good cleaning of the surface, a good etching of the material is particularly important when powder coating aluminium. In addition to removing oxide residues and other surface residues that are not removed during cleaning, acid etching with Alfideox enables the surface to be roughened. This in turn gives the subsequent powder coating the necessary "grip". But it is not only the roughening of the surface that is important, but in particular the active and trouble-free surface that this creates. This promotes the formation of a good protective layer in the subsequent corrosion protection process.
Various Alfideox products with different properties are available for this application.
Advantages:
Optimised acid/fluoride ratios ensure perfect etching behavior even in older baths
Separate fluoride additions become superfluous
Effective etching effect even at low application concentration
Alfideox 82/3: ammonium-free and suitable for evaporation systems for rinse water treatment
Automatic dosable liquid products
Degreasing and etching in only one process step through combination with Alfisid products
Multi-stage Alfideox - application possible for flexible etching rates
Alfideox - products without GHS06 labelling are also available in case of stock restrictions
Properties of Alfideox products
Example of a flexible, multi-stage process with an etching rate of 2.2 g/m² applied by spraying. As the products are compatible with each other, no rinsing is required between the etching zones. In the first process step, the focus is on degreasing the surface with a simultaneous low etching rate; in the second, the etching rate can be flexibly adjusted to meet specific specifications (e.g. Qualicoat Seaside Class).
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