Anodising

In surface technology, anodising refers to electrolytic processes for producing oxide layers on metals in order to protect them from corrosion and abrasion. The best-known anodisation process is Eloxal, the electrolytic oxidation of aluminium.

The advantages of anodising

Anodising is not only visually appealing, but also provides effective protection against abrasion and corrosion. The anodised layer also provides improved sliding properties and offers high heat resistance and good electrical insulation. These properties make anodised aluminium ideal for a wide range of applications in various industries.

Technical anodising

Hard anodising

Particularly hard and durable surfaces can be achieved by hard anodising (also called hard anodising). In contrast to normal anodising, hard anodising involves working with very high currents and temperatures around freezing point. As a result, Vickers hardness values of up to 550 HV can be achieved. To further improve the sliding properties, hard anodised parts can be PTFE impregnated.

Ematal anodising

Ematal anodised aluminium parts have a wear-resistant, slippery and almost non-porous surface. Ematal is used when friction is to be minimized by mechanical contact (e.g. in plain bearings), by a flowing medium (e.g. valve bodies and nozzles for gases or liquids) or a combination of these (in pneumatics and hydraulics).

Bilatal anodising

Bilatal is a special anodising process for various alumiunium alloys (press and rolled alloys). The Bilatal coating is characterised in particular by its low residual reflection in UV, DUV and VUV spectral range, as well as low outgassing behavior and good wear resistance.

Colour anodising

Aluminium parts can be coloured by firmly binding colour pigments into the anodised layer. Due to different requirements of the target markets, BWB offers two colour systems: Colour for Industrial application with high chemical and mechanical resistance and colours for architectural applications with high weather resistance and light fastness.

Colour chart in industrial design

Colour chart in architecture

Pre- and after-treatments

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Product data sheets

Anodising

Hard anodising

Heloxal hard anodising

Ematal anodising

Bilatal anodising

Pralox

Colour chart in industrial design

Markets

By proving market-specific certificates for aviation (Nadcap, EN 9100), architecture (Qualanod) and medical technology (ISO 13485) as well as the implementation of the necessary quality management systems (ISO 9001), BWB proves to be a reliable partner in the industry.

Aviation

Architecture

Mechanical engineering

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