• Aero

Friction Stir Welding

A solid-state joining process (the metal is not melted) that uses a third body tool to join two facing surfaces. Heat is generated between the tool and material, which leads to a very soft region near the FSW tool. It then mechanically intermixes the two pieces of metal at the place of the joint, then the softened metal (due to the elevated temperature) can be joined using mechanical pressure (it is applied by the tool), much like joining clay or dough. It is primarily used on structures that need superior weld strength without a post weld heat treatment.

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