Anodising

Anodizing is undoubtedly the best known and most widely used anodizing process. Anodizing produces a transparent oxide layer with a thickness of 5 to 25 micrometres, while hard anodizing typically produces a layer thickness of between 25 and 150 micrometres. These layers reliably protect aluminum from corrosion, increase surface hardness and reduce friction values when in contact with other materials.
Anodizing and anodizing are often used somewhat imprecisely as synonyms. While the term anodizing generally refers to electrolytic processes for producing oxide layers on metals, anodizing refers specifically to the electrolytic oxidation of aluminium (anodizing for short).
BWB offers a wide range of electrolytic surface coatings, from classic anodizing to hard anodizing for special applications.

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 coatings

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 impregnated with PTFE.

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

The Bilatal process is a special anodising process for various aluminium alloys (pressed and rolled alloys). The BILATAL coating is characterized in particular by its low residual reflection in the UV, DUV and VUV spectral range, as well as its 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

Aluminum in construction

By anodizing facade elements, they are protected from the weather and visually enhanced. Learn more about the advantages of aluminum on the website alu-am-bau.ch - the information portal on the material of the modern age and the Sustainblog.

Aluminum in construction - information portal on the building material of the modern age

Sustainblog - Building for our future

Facade finishing

Architecture brochure

Inoxal

Natural tone EV1

Sanodal

Colinal

Permabronze

Permalux

Permagrey

Permacolor

Sandalor

Frequently asked questions (FAQ) about wet painting

Here you will find answers to the most frequently asked questions about wet painting. Discover the advantages, the materials used and much more. Our aim is to provide you with clear and precise information so that you are well informed about the wet coating process. If you have any further questions, please do not hesitate to contact us.

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