Gkss-forschungszentrum Geesthacht Gmbh

Jorge Dos Santos

Christoph Schilling

Alexander Von Strombeck

In a device for butt joining workpieces by friction stir welding along a connecting area, including a shaft having a driven end and, at the opposite end, a pin-like projection to be disposed in the connecting area of the workpieces, whereby, upon rotation of the shaft, the workpiece material in contact with the pin-like projection is plasticized, first and second stops with first and second shoulders are provided on the device and disposed at opposite sides of the workpieces and at least one of the stops is movable relative to the other and biased toward the other with a controllable force for engaging the workpieces between the shoulders of the stops during the friction stir welding procedure.

Device for joining workpieces by friction stir welding

In a method and apparatus for joining at least two adjoining workpieces by friction welding, a rotatable shaft is provided at its front end with a friction welding tool which is biased toward the workpieces to plasticize an area of the workpiece into which the tool enters while the plasticized material is displaced and stored in, or around, the tool. Upon passing through the top workpiece and entering the lowermost work piece, the tool is removed and the stored plasticized material is returned to the void provided by the tool upon removal thereof from the workpieces for joining the workpieces.

Method and device for joining at least two adjoining work pieces by friction welding

In a device for joining, by friction stir welding, at least two workpieces, a support structure is provided with a head portion which includes drive means and a shaft which is rotatable by the drive means and has a pin-like projection projecting toward a support member of the support structure for supporting workpieces to be joined by friction stir welding and wherein guide means are provided for moving the rotating pin-like projection into contact with, and into, the workpieces while plasticizing the workpieces in the contact area to form thereby a spot weld by friction stir welding.

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Lüneburg, Germany

Jorge Dos Santos