METHOD AND DEVICE FOR IMPROVING THE QUALITY OF THE WELD SEAM IN FRICTION STIR WELDING

A method and a device for improving the quality of the weld seam in friction stir welding is provided. The process of friction stir welding is effected by means of a friction welding tip, in which a spiral conveyor screw is provided in the spindle bearing. The longitudinal axis of the spindle bearin...

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Bibliographische Detailangaben
Hauptverfasser:	REITENAUER, Andreas, FOERG, Johann, DEMHARTER, Martin
Format:	Patent
Sprache:	eng ; hun
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A method and a device for improving the quality of the weld seam in friction stir welding is provided. The process of friction stir welding is effected by means of a friction welding tip, in which a spiral conveyor screw is provided in the spindle bearing. The longitudinal axis of the spindle bearing is inclined at an angle to the vertical. The sliding surface of the rotating spindle consists of a flat sliding surface and, for the welding of curved seams, in each case of a sliding surface inclined at an acute angle to the sliding surface, the friction welding tip is designed in the shape of a truncated cone. The lateral surface of the truncated cone is formed by six trapezoidal planar parts, of which three planar parts each uniformly distributed at the circumference lie at an angle of 120 degrees with respect to one another and account for a proportion greater than ⅙ at the circumference.