Friction stir welding method

Details Friction stir welding method Friction stir welding method

2005-03-15

2005-03-15

Stoner, Kiley S. (Department: 1725)

Metal fusion bonding

Process

Using dynamic frictional energy

C228S002100, C219S050000

Reexamination Certificate

active

06866181

ABSTRACT:
There is provided a method capable of decreasing a friction force in friction stir welding, in which a welding tool is used. In a method of friction stir welding workpieces together by rotating and pressingly plugging a welding tool, formed from a harder material than the workpieces, into a weld zone of the workpieces and moving the welding tool relatively in a welding direction, a power supply device allows a current to flow between the welding tool1and the workpieces to cause resistance heating of the welding tool. Combined use of resistance heating makes it possible to decrease a friction force. Preferably, a conductive ceramic is coated on surfaces of the welding tool to cause resistance heating.

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