error patterns

Screen- and fried egg effect on electrolytically coloured aluminium

In classical, electrolytic colouring of aluminium surfaces with tin salts, uniform colourings from bronze ...

Small cause – big effect : Mistakes when cleaning in anodising operations

Small cause - big effect : Mistakes when cleaning in anodising operations Small cause ...

Too much colour due to tin on the surface the problem of over-dyeing

On anodised, electrolytically black-coloured and hot-sealed aluminum we see deposits - what could that ...

The problem with zinc in acidic aluminium etching

Particularly in the field of job coating, a certain proportion of hot-dip galvanised surfaces ...

background knowledge, error patterns, Hintergrundwissen

Mistakes while desmutting are possible!

As in all chemical pretreatment steps in the anodisation of aluminium, mistakes can also ...

background knowledge, error patterns

Pre-corrosion and its effects on anodising processes

When aluminium reacts with its environment, this often causes pre-corrosion. Different, mostly barely visible ...