Sulphuric Acid Anodising has specific areas of application where it is chosen as the anodising process.
Architectural Aluminium Extrusions
Most architectural Aluminium Extrusions are anodised, Window frames, door profiles, curtain walling etc. A typical anodised layer is between 15-25 microns and is able to resist weathering and salt laden air, whilst keeping the slim line of architectural extrusions to a minimum.
Consumer Electronics and Heat Sinks
Anodised components such as the outer casing of Laptops, Handsets and Audio Equipment, for example Heat Sinks, benefit from thin, hard, non conductive surfaces that can be readily machined and do not suffer from any reduction in thermal conductivity.
Coloured and Decorative Components
For Sulphuric acid anodising, see https://www.poeton.co.uk/surface-treatments/anodising/sulphuric-acid-anodising/. Here is some general information on how Sulphuric Acid Anodising produces the coloured items for architectural components.
Fluid System and Hydraulic Components
Valve bodies, manifolds and pump housings in hydraulic or pneumatic systems are typically anodised to give corrosion protection. As the anodic oxidation grows into the surface of the aluminium the dimensional change is predictable and is typically in the order of a few microns.
General Engineering Parts With Tight Tolerances
Where drawing tolerances are critical the controlled growth of the anodic layer is a critical factor. Parts are machined to specific tolerances to take into account the growth of the anodic layer.
Understanding how to select the correct application for a process will save time and also prevent specification mismatch.
