Friction plug welding methods and systems

Details Friction plug welding methods and systems Friction plug welding methods and systems

2011-07-12

2011-07-12

Stoner, Kiley (Department: 1735)

Metal fusion bonding

Including means to provide heat by friction between...

C228S002300, C428S544000

Reexamination Certificate

active

07975896

ABSTRACT:
Friction plug welding methods and systems plug a hole extending through a component part from front and back faces thereof. A sacrificial plate having an opening therethrough may be positioned against the back face of the component part with assistance from a restraint part (which is also preferably provided with a space of sufficient dept to receive a terminal end of the male plug) so that the opening is coaxially aligned with the hole to be plugged. Upon advancing a male plug of a plug rod into the hole under friction plug welding conditions, a friction weld region will therefore be formed between the male plug and defining surfaces of both the hole extending through the component part and the opening extending through the sacrificial plate. The plug rod may include an annular shoulder flange which defines a plane parallel to the front face of the component part so that flash flow from the friction welding will be displaced laterally of the hole. The male plug may be frustroconically shaped. An annular arcuate surface may also be provided which joins the male plug to the shoulder flange.

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