Friction Welding - Another solid state welding process that requires
one of the parts to rotate or move to create the friction energy required.
Suited for tubular components and is used to small extent by high volume
manufacturers. (Manufacturers - Thompson, KUKA, MTI and more)
Friction Stir Welding - Able to weld aluminum using a FSW tool that spins
and joins parts and not resticted to tubular components
Links: American Friction , mtiwelding.com, NCT , spinweld.com , ifweld.com ,
Thompson Friction , kuka.de , Friction Stir Link,
Nova Tech , MTS , Lockheed Martin , ardindustries.com