friction stir welding (FSW)

CALIP Group is the only manufacturer in France and in Europe to master and integrate friction stir welding (FSW) into its production processes of mechanical parts.

Friction stir welding is an innovative welding process, which is carried out by solid means, without introducing any additional materials. It gives the welds remarkable properties: exceptional mechanical strength, perfect sealing and reproducibility at a low cost.

Applicable to all aluminum alloys, even those deemed unsolderable by liquid means, FSW technology enables the production of parts that were previously impossible. This sophisticated industrial process is a technological breakthrough which can be used for many applications: welding of cases, cold plates, reconstitution of large-width profiles, welding of aluminum alloys of the aero or foundry type, bimetallic welds.


We weld using our CNC machining centers which are equipped with a Stirweld welding head specifically designed for this purpose.


The welding head drives the rotation of a tool on which it exerts an axial force thus allowing the penetration of the end pin into the two materials to be welded, at the level of the weld joint. When the shoulder located above the pin comes into contact with the parts to be welded, the tool then advances by force in the weld joint, allowing the mixture of the two materials softened by the heat created by this force.

CALIP Group is a member of the Welding Institute.