Friction agitation joining tool

Details Friction agitation joining tool Friction agitation joining tool

2005-07-12

2005-07-12

Edmondson, Lynne R. (Department: 1725)

Metal fusion bonding

Including means to provide heat by friction between...

C228S112100

Reexamination Certificate

active

06915939

ABSTRACT:
A friction agitation joining tool (10A,10B) includes a rotor (11) having an end portion to be pressed onto at least one of surfaces of joining members (11a, 1b) and a probe (13) to be inserted into a joining portion (3) of the joining-members (1a, 1b), wherein the probe (13) has a diameter smaller than a diameter of the rotor (11). An end face (12) of the end portion of the rotor (11) is formed into a concave surface dented from a periphery of the end face (12) toward a rotational center of the end face (12). The probe (13) is protruded from the rotational center of the end face (12). The end face (12) is provided with a spiral groove (15) or an annular groove (16) surrounding the probe (13). By performing the joining operation with the joining tool (10A,10B), a joined member with a good joint can be obtained.

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CJ Dawes et al.: “Development of Improved tool designs for friction stir welding of aluminum” 1stInternational Symposium on Friction Stir Welding Jun. 14, 1999.
Kevin Colligan: “Dynamic material deformation during friction stir welding of aluminum” 1stInternational Symposium on Friction Stir Welding Jun. 14, 1999.

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