![]() Introductionįriction stir welding (FSW) has captured the attention of the fabrication industry as a solid-phase joining technique capable of good quality single sided and double sided butt, 'T', and lap joints. The tool is moved (relatively) along the joint line, forcing the plasticised material to coalesce behind the tool to form a solid-phase joint.Ī novel FSW tool is described for welding plate aluminium alloy is described. ![]() The contact of the shouldered region of the tool with the workpieces also generates significant frictional heat, as well as preventing plasticised material from being expelled. The relative motion between the tool and the substrate generates frictional heat that creates a plasticised 'third-body' region around the immersed portion of the tool. ![]() This paper describes recent developments in FSW, with brief reference to certain process characteristics common to many of the variants within friction technology.įriction stir welding is a continuous process that involves plunging a portion of a specially shaped rotating tool between the abutting faces of the joint. Presented at INALCO '98, 7 th International Conference on Joints in AluminiumĪbington, Cambridge, UK 15-17 April 1998 Abstractįriction Stir Welding (FSW) is a new solid-phase technique invented and patented at TWI for the butt and lap welding of ferrous and non-ferrous metals and plastics. National Structural Integrity Research Centre.Structural Integrity Research Foundation.
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