Friction stir welding

Friction stir welding joins metals without melting by using a rotating tool to soften and mix the material, forming a defect-free, high-strength bond. This precise method minimises distortion and produces welds that meet or exceed the performance of the base material.

FSW enables the joining of advanced alloys once considered unweldable, including high-silicon aluminium, magnesium, and dissimilar metals. This flexibility supports lightweight designs and multi-material assemblies for breakthrough applications. The process combines materials much like “stirring dough,” ensuring a seamless metallurgical bond. 

FSW delivers unmatched consistency in high-volume production. With rigid clamping, precise tooling, and seamless CNC integration, Dynacast achieves welds that are repeatable, reliable, and defect-free every time. 

Unlike traditional fusion welding, FSW eliminates porosity and hot cracking, ensuring 100% leak-proof joints. This makes it ideal for battery trays, cooling plates, and enclosures where fluid-tightness is critical. The process offers long-term durability with superior mechanical and sealing performance.

FSW eliminates the need for filler materials, shielding glass, and harmful emissions, reducing environmental impact. By lowering energy use and material waste, the process aligns with global sustainability goals. It’s a cleaner, greener solution without compromising strength and reliability.