Why is the surface treatment so important?
Painting aircraft components is not just for looks, but also provides essential protection against corrosion, environmental influences and mechanical wear. Even the smallest components are elaborately treated in several steps and coated using specific processes. Every rivet and every angle is processed with the utmost precision, documented and subjected to the strict norms and standards of aviation. As these processes are often treated confidentially, they usually remain hidden from outsiders.
Das Beschichten mit Alodine härtet und schützt die Komponenten zusätzlich.
In focus: an inconspicuous aluminum bracket
We are able to show an example of this demanding process thanks to the kind permission of Pilatus Aircraft Ltd: The Swiss manufacturer grants BWB a rare insight into the painting of its components. The focus is on an inconspicuous aluminum bracket, hundreds of units of which are pre-treated, chromated and primed against corrosion at BWB-Altenrhein AG. The so-called primer ensures optimum adhesion of the subsequent top coats and thus contributes to the longevity of the components.
The most important work steps from raw material to optimum coating:
- CLEANING AND DEGREASING: The removal of machine oil residues and transportation marks ensures a flawless surface.
- CHROMATING: Coating with Alodine effectively protects the components against corrosion.
- APPLICATION OF PRIMER: As an adhesion promoter, this ultra-thin coating ensures a durable and stable bond between the substrate and the top coat.
- CURING IN THE DRYING ROOM: The controlled heat treatment ensures complete curing of the primer and gives it its final hardness, adhesion and durability.
- QUALITY CONTROL AND FURTHER TRANSPORT: After a successful final inspection, the components are ready for the next production steps in the Pilatus Aircraft Ltd factory halls.
Das Beschichten mit Alodine härtet und schützt die Komponenten zusätzlich
Challenges and the future of aviation coatings
Aviation primers require precise application in order to minimize weight increases and not impair aerodynamic properties. In addition, aviation primers are formulated to withstand extreme temperatures from -60°C in the stratosphere to +50°C on the ground as well as strong UV radiation.
In view of increasing environmental regulations and new materials, the technology of aviation coatings is constantly evolving. The focus is on environmentally friendly, chrome-free alternatives and even more efficient coatings in order to continue to meet the highest quality standards in the future. Perfect paintwork therefore remains an indispensable building block for the safety and durability of modern aircraft.
Certificates in aviation
BWB meets all industry quality standards - including EN 9100 and NADCAP certifications in the areas of CP, SE and NDT. These certifications prove the process safety and reliability of our services for safety-critical applications.
