![]() No keyholes: Pin is retracted automatically at end of weld.Safe operation: Does not create hazards such as welding fumes, radiation, high voltage, liquid metals, or arcing.Retained material properties: Minimizes material distortion.Versatile welds: Welds in all positions and creates straight or complex-shape welds.Durable joints: Provides twice the fatigue resistance of fusion welds.Diverse materials: Welds a wide range of alloys, including previously un-weldable (and possibly composite materials).Some of the FSW Machines ESAB SuperStir TM machine FW28 ESAB Machine Microstructure analysis Optical micrographs of regions (a), (b) and (c) of the stir nugget.Ĭommon Tools Fixed Pin Tool Self Reacting Pin Tool Adjustable Pin Tool Retractable Pin Tool Weld nugget (Part of thermo-mechanically affected zone) Thermo-mechanically affected zone (TMAZ) D. Heat from mechanical energy conversion Linear friction welding Rotary friction weldingįriction Stir Welding Rotating probe provides friction heat and pressure which joins the material Sufficient downward force to maintain pressure and to create friction heat Sufficient downward force to maintain pressure and to create friction heat Shoulder which creates friction heatand welding pressure Probe which Stir the material.Welds created by, a) Frictional heating b) Mechanical deformation. ![]() ![]() Welding using friction as the major resource.
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