Railway bridges

Project summary.

Metallisation of railway bridges using aluminium (Thermal Metal Spray Aluminium).


MÁV Zrt.


Budapest, Óbuda




Railway bridge

Within the frame of this project we carried out the anti-corrosive protection and coating of the main frames of two composite (steel and concrete) railway bridges.

In the hungarian history of bridge building this was the first time that the technological process of the Thermal Spray Aluminium metallisation was successfully applied for anti-corrosive purposes. In the same time the technology is a widely acknowledged process and application in the international bridge building community. Within the frame of the project we have treated more than 350 metric tons of structural steel subjected to high corrosive stress (C5 corrosion category).

It was in the 1930's when they first applied the Thermal Spray technology to provide exceptional quality, long lifespan anti-corrosive surface treatment for steel bridge constructions during which zinc was used as the coating material. It was not long before it was realized that in chloric, slat water environments aluminium is the appropriate choice and performs much better in those circumstances. From the 1950's on millions of square meters were treated with aluminium utilizing the metallisation process.

During the works we have used a Flame Spray type equipment on the exceptionally well cleaned ( Sa2,5-Sa3) and prepared surface.

We used a multi-layer industrial paint system from Tikkurila in order to provide long lasting anti-corrosive lifespan and to comply with the strict requirements of the Hungarian State Railways (MÁV).

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