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Ultraschallunterstuetztes Ruehrreibschweissen

Method for welding together of two workpieces using an ultrasound-assisted friction stir welding process, comprises applying an ultrasound to one of the workpieces during the welding process
 
: Dobmann, G.; Jene, T.; Eifler, D.; Wagner, G.

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Frontpage ()

DE 102008014320 A: 20080314
DE 102008014320 A: 20080314
B23K0020
German
Patent, Electronic Publication
Fraunhofer IZFP ()

Abstract
(A1) Die vorliegende Erfindung betrifft ein Verfahren zum Verschweissen von Werkstuecken, wobei zumindest zwei Werkstuecke mittels Ruehrreibschweissen miteinander verschweisst werden, wobei zumindest eines der Werkstuecke waehrend des Verschweissens mit Ultraschall beaufschlagt wird.

 

WO 2009112278 A1 UPAB: 20091001 NOVELTY - The method comprises applying an ultrasound to one of the workpieces (1, 2) during ultrasound-assisted friction stir welding process. The two workpieces are welded in an area in which the ultrasound is applied. The ultrasound is applied with a frequency of greater than or equal to 80 kHz and amplitude of greater than or equal to 40 mu m, by a sonotrode (6). The ultrasound is applied parallel or vertical to a longitudinal direction of a welding seam (3) of the friction stir welding and/or applied so that it spreads itself parallel to a longitudinal direction of the welding seam. DETAILED DESCRIPTION - The method comprises applying an ultrasound to one of the workpieces (1, 2) during ultrasound-assisted friction stir welding process. The two workpieces are welded in an area in which the ultrasound is applied. The ultrasound is applied with a frequency of greater than or equal to 80 kHz and an amplitude of greater than or equal to 40 mu m, by a sonotrode (6). The ultrasound is applied parallel or vertical to a longitudinal direction of a welding seam (3) of the friction stir welding and/or applied so that it spreads itself parallel to a longitudinal direction of the welding seam and/or in a plain of the surface of one of the workpiece or welding seam and/or itself in the volume of one of the workpiece or vertical to the plain of the welding seam. The ultrasound is applied as longitudinal wave and/or as transverse wave over a tool (4) causing the friction stir welding. An INDEPENDENT CLAIM is included for a device for welding together of two workpieces. USE - Method for welding together of two workpieces using an ultrasound-assisted friction stir welding process. ADVANTAGE - The method ensures welding of two workpieces with high stability and high welding quality.

: http://publica.fraunhofer.de/documents/N-106388.html