error patterns

Microorganisms in the pre-treatment

Environmental protection and the search for more compatible processes have also had a strong ...

Tin impurities in the alkaline E6 pickling bath

The pre-treatment of aluminium surfaces in alkaline E6 long-term pickling processes produces fine-matt, very ...

What is floating on the cleaning bath – oil or surfactants?

Sometimes, at the start of production, you observe the following phenomenon on the cleaning ...

Electrolytic colouring: how important the right bath level is

The solution to a problem in chemical pre-treatment during anodising can also be simple ...

Poorly rinsed surfaces before powder coating

The best pretreatment is ineffective if the rinsing technique is inadequate. Often the process ...

background knowledge, error patterns

Destabilisation of alkaline E6 – long-term pickling processes

For the decorative matting of aluminium surfaces in the anodizing process, alkaline pickling processes ...