摘要: An internal channel in a metal body for use applications where fluid flow within is desired, as heat exchanger. The formed the by frictionally stirring with pin plunged into body, and traversing pin.
Christopher Brian Smith, Robert James Heideman, Jason Winton Thomas Scott, Donald Frederic Bishofberger, Thomas Michael Thessin, Brahmanpalli Narasimhamurthy Ranganathan, Friction stir welding tool ,(1999)