Metal fusion bonding – Including means to provide heat by friction between...
Patent
1998-03-09
1999-10-26
Ryan, Patrick
Metal fusion bonding
Including means to provide heat by friction between...
2281121, 228 565, 156580, B23K 2012, B23K 522, B23K 3700
Patent
active
059712473
ABSTRACT:
Stir friction welding is accomplished by applying force to plunge a nonconsumable, rotating welding post into the region to be welded. The rotation creates friction which at least partially melts the material to be welded, as the welding post penetrates. The force is continued, causing the post to continue to penetrate. A set of rollers associated with the welding head eventually reaches the surface of the workpiece when the welding post reaches the proper depth, and prevents further penetration of the welding post. In one embodiment of the invention, the rollers have crowned surfaces, and the force is applied by a hydraulic cylinder.
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Fierke T. G.
Gamino Carlos J.
Lockheed Martin Corporation
Meise W. H.
Ryan Patrick
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