FSW FRICTION WELDING
Modern friction stir welding (FSW) –
superior quality and strength for aluminium joints
FSW friction stir welding: A new era for aluminium structures
Alumech Ltd offers FSW (Friction Stir Welding) as its special expertise. It is a state-of-the-art method that differs completely from traditional fusion welding. In the FSW process, aluminium parts are joined together using mechanical friction and pressure without melting the material.
During the process, the rotating tool is pressed into the joint. The heat generated by friction softens the aluminium to a plastic state, allowing the tool to mix the materials together in a solid state. The result is a seamless, extremely strong and visually smooth joint.
Alumech Ltd has extensive experience in FSW welding and the ability to optimise cost-effective jigs even for smaller series. We design the necessary jigs according to the shape and production volume of the customer’s workpiece.
Why choose FSW over traditional welding?
Superior strength
As the material does not enter a liquid state, the microstructure of the joint remains excellent. The strength of the seam is significantly higher than that of traditional MIG welding – often close to the strength of the base material itself.
Minimal deformations
The temperature of the FSW process is significantly lower than that of fusion welding. This means that structures remain straight and dimensionally accurate without the need for costly and time-consuming straightening work.
Perfect tightness
The method automatically creates gas- and liquid-tight seams without porosity. This makes it the perfect solution for battery boxes, tanks and heat exchangers, for example.
Consistent and visual
The automated process ensures that every centimetre of seam is identical in quality. The seam is even and requires little or no post-processing.