Friction stir welding total penetration technique

Details Friction stir welding total penetration technique Friction stir welding total penetration technique

1996-02-20

1997-03-18

Heinrich, Samuel M.

Metal fusion bonding

Process

Using dynamic frictional energy

228 21, B23K 2012

Patent

active

056114796

ABSTRACT:
A method for ensuring complete penetration of a friction stir weld using a rotating pin friction stir welding tool comprising chamfering the bottom of the plates to be welded along the faying edges. Placing the plates on a back up plate. Inserting the pin friction stir welding tool into the plates to the depth of the chamfer and translating it along the faying surface to plasticize the material in the plates. The plasticized material will flow into the volume defined by of the chamfer at the bottom of the plates and the back up plate. A visual inspection will show if the weld penetrated fully through the plates if the chamfered volume is filled with material which flowed in while plasticized.

REFERENCES:
patent: 4144110 (1979-03-01), Luc
patent: 4260094 (1981-04-01), Stroo
patent: 5460317 (1995-10-01), Thomas et al.

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