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 essential, 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.
Numerous Alfideox products with different properties are available for this application.
Benefits
Coordinated acid/fluoride ratios ensure optimum etching behavior even in older baths
Effective etching effect even at low application concentration
Easy in automatic metering due to liquid products
Degreasing and etching in only one process step through combination with Alfisid products
Multi-stage Alfideox - application possible for flexible etching rates
Special Alfideox products for evaporator-compatible rinsing water treatment
Alfideox - products without GHS06 labelling are also available in case of stock restrictions
Attributes of Alfideox products
- Main product
- Degreasing and etching with Alfisid
- Suitable for evaporators
- Degreasing and etching with Alfisid
- GHS06-label-free
- Degreasing and etching with Alfisid
Below an example of a flexible, multi-stage application with an etching rate of 2.2 g/m² by spraying. As the products are compatible with each other, no rinsing is necessary 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.
