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Cold Pressure Welding
Cold Pressure Welding (KPS)
An innovative and economical joining process for extruded profiles
The KPS process was developed by Honsel and is a patented process for joining aluminum extruded profiles without heat input or welding consumables. This process was taken over by FKM Metallkomponenten GmbH in 2003 and has been carried out and further developed by FKM Elemente GmbH Innovations and Standards since 2014.
It belongs to the group of non-detachable connections and corresponds to cold pressure welds according to DIN 1910.
The shape of the tongue and groove results in both a clamping connection and partial cold welds. The pointed elevations of the tongue tear open the oxide layer of the groove during indentation and deform plastically. This allows atomic forces to take effect in the metal lattice structure.
A connection is achieved that corresponds to a longitudinal seam weld, but does not have the disadvantages of distortion and loss of strength in the heat-affected zone (HAZ).
The KPS process was specially developed for joining aluminum extruded profiles.
Low manufacturing costs on the KPS composite enable the production of large profiles and plate-shaped components, as well as spatial shapes that cannot be produced by extrusion. Another advantage lies in the economical mechanical processing of the individual profiles before the KPS composite.
A connection is achieved that corresponds to a conventional welded connection, but does not have the disadvantages of distortion and loss of strength in the heat-affected zone.
The KPS process is an excellent extension of the design possibilities with aluminum extruded profiles and has proven itself in series production for components from the areas of
- Vehicle construction (buses and trains)
- Mechanical engineering
- Electrical engineering and much more
