Fast, automated, environmentally sustainable and with low energy impact: this might be enough to define it innovative.
In actual truth, the Friction Stir Welding technology makes it possible to weld metals in the solid state and finally opens the door to welding components of a heterogeneous nature and different thickness without the need for filler material. Aluminium and copper, aluminium and magnesium, light alloys of various kinds give rise to joints with excellent metallurgical properties, and higher quality than those of the two base materials. In one step only.
Friction Stir Welding, as the name says, is a technology by which welding occurs by friction and stirring so that two metal parts are joined in a plastic state and, unlike conventional welding processes, without the need for any filler material: heat is generated by friction in a controlled manner, so as not to melt the materials, but making them sufficiently malleable to be mixed, and the resulting joint appears indistinguishable from the base materials.
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