Chromating & SurTec 650

In contrast to anodising, chromating applies a soft, corrosion-resistant and conductive layer to your aluminium product. This special property makes chromating a favoured option in many applications, especially in environments where corrosion protection is crucial. In addition, the conductive layer acts as an excellent primer for subsequent wet and powder coatings. This enables efficient coating and gives your product not only additional protection but also an aesthetically pleasing finish. 

Chromate and colourless conversion coatings

Chromating offers the option of applying either a colourless or yellow conversion coating. Our colourless variant achieves almost the same high resistance as the classic yellow chromate, but at the same time meets the requirements of ROHS, making it an environmentally friendly and future-oriented choice. This special process, which we use under the name SurTec 650, makes it possible to provide the surfaces of your aluminium products with a high-quality, protective coating that will stand the test of time. With the option between colourless and yellow chromate, you can not only adapt the performance properties of the coating to your specific requirements, but also take aesthetic preferences into account to find the optimal solution for your applications.

 

High-tech made in Germany

We have been audited and certified in quality management and environmental management since 2008. The highest standards are a matter of course for us and are reflected in great acceptance and customer satisfaction.

We keep emissions low through modern filter systems and save resources through energy recovery.

A photovoltaic system generates electricity for our own use and is designed for expansion. Other measures such as waste avoidance and proper disposal are a matter of course for us.

Chromating in the nanometre range

Summary

Chromating in the nanometre range is an extremely precise surface treatment method. The layer thickness of this chromating is in the range of a few nanometres, which makes it almost invisible. Due to its extremely low thickness, the original surface structure and texture of the material remains largely unchanged, which is of crucial importance in many applications.

However, it is important to note that these wafer-thin chromating layers can react more sensitively to temperature fluctuations. Above temperatures of around 80°C, they can become micro-cracked, which can lead to a deterioration in corrosion protection. Therefore, when using chromating in the nanometre range, it is important to carefully consider the operating conditions and ambient temperatures to ensure the effectiveness of the corrosion protection.

Low resistance with SurTec 650

Advantages

One of the outstanding properties is the extremely low electrical contact resistance of chromate coatings. In fact, this is generally more favourable than the electrical resistance of untreated parts. This makes chromate coatings particularly suitable for applications where aluminium housing parts need to be conductively connected to each other.

In addition to corrosion protection and electrical properties, chromating also offers the option of preparing the surface for subsequent coatings, which expands the design options and enables aesthetically pleasing surface finishes. 

Chromating aluminium

Aluminium chromating is a surface treatment process in which a chromating layer is applied to the surface of aluminium. This layer serves to protect the aluminium from corrosion and at the same time improves adhesion for subsequent coatings such as lacquers or paints. The process can be carried out either colourless or in yellow tones and meets high environmental standards. Aluminium chromating is used in various industries, including the automotive, aerospace and electronics manufacturing industries, to produce high-quality and durable aluminium products.

Chromating in the nanometre range

Summary

Aluminium chromating can be carried out both colourless and in various shades of yellow to meet specific requirements and aesthetic preferences.

Modern processes meet high environmental standards and minimise the use of environmentally harmful chemicals, making the method environmentally friendly.

Low resistance with SurTec 650

Advantages

The chromating layer forms a barrier that protects the aluminium from harmful environmental influences such as moisture, chemicals and atmospheric corrosion. This significantly extends the service life of aluminium products, which is of crucial importance in many applications.

Another advantage is the improved adhesion strength for subsequent coatings. The chromating layer serves as an excellent primer for varnishes, paints and other coating materials. This enables a better surface finish and ensures lasting adhesion of the coatings.