Patent ID: 7766215
Filing Date: 2010-08-03
Classification: B23K

Abstract:
1. Process for the friction-stir production of a welded joint of two plates ( 20 , 21 ), respectively upper plate ( 21 ) and lower plate ( 20 ), whereby said welded joint is produced between a first beginning end and a second separate final end of the first end, using a welding device ( 25 ) having a retractable pin ( 29 ), said process comprising the following steps: positioning and keeping the two plates ( bringing the welding device into contact with one or more plates in a zone close to a front edge of the cover zone for forming the beginning of the welded joint, longitudinally welding the two plates by moving the welding device to a rear edge of the cover zone for forming the final end of the welded joint, whereby the welded joint extends from a rear edge up to a front edge of the cover zone, continuing the movement of the welding device ( retracting the retractable pin (