Friction stir weld repair

B - Operations – Transporting – 23 – K

Patent

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Details

B23K 20/12 (2006.01)

Patent

CA 2571513

A method of repairing a discrepancy in a casting, weldment or other workpiece (10, 12) comprised of a material characterized by thermoplastic properties includes excising the discrepancy by cutting, milling, or otherwise removing workpiece material surrounding the discrepancy so as to remove the discrepancy and form a cylindrical hole (52) in the workpiece. The method further includes placing a cylindrical plug (54) in the cylindrical hole and moving a friction stir welding tool (46) around the circumference of the plug to weld the plug to the workpiece.

L'invention concerne un procédé destiné à réparer une anomalie dans un produit moulé, un assemblage soudé ou une autre pièce de fabrication (10, 12) constituée d'une matière caractérisée par des propriétés thermoplastiques. Ce procédé consiste à ablater l'anomalie par coupage ou par fraisage, ou, sinon, à enlever la matière de la pièce entourant l'anomalie de façon à enlever l'anomalie et à former un trou cylindrique (52) dans cette pièce. Ledit procédé consiste en outre à placer un bouchon cylindrique (54) dans le trou cylindrique et à déplacer un outil de soudage par friction-malaxage (46) autour de la circonférence du bouchon en vue du soudage de ce bouchon dans la pièce de fabrication.

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