The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2018
Filed:
May. 13, 2015
Acergy France Sas, Suresnes, FR;
Cesar Atin, Nanterre, FR;
Jacques Lacome, Sucy en Brie, FR;
Gregory Alexandre Toguyeni, La Garenne-Colombes, FR;
Acergy France SAS, Suresnes, FR;
Abstract
A method of fabricating a metal pipeline by friction stir welding (FSW) along a circumferential interface includes spinning first and second FSW tools about respective axes of rotation in contact with a pipe wall to heat, plasticize, and stir respective zones of plasticized metal at the interface. The zone of plasticized metal produced by the second FSW tool extends deeper into the pipe wall than the zone of plasticized metal produced by the first FSW tool. Relative circumferential movement of the FSW tools along the interface is controlled such that the second FSW tool following the first FSW tool enters the zone of plasticized metal produced by the first FSW tool while the metal in that zone remains plastic.