Friction stir welding tool and friction stir welding method
AssigneeOsaka University
InventorsHidetoshi Fujii, Yoshiaki Morisada, Yasuhiro Aoki, Akihiko Ikuta
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Abstract
Provided are a long-life and inexpensive friction stir welding tool that is not dependent on the mode of friction stir welding or the type of material to be welded, and a friction stir welding method using the friction stir welding tool. The friction stir welding tool comprises a body portion having a shoulder portion, and a probe portion disposed on a bottom surface of the body portion, and is characterized in that the probe portion is spherical-crown shaped. Preferably, the shoulder portion is flat or convex, and preferably the hardness of the shoulder portion is greater than the hardness of the probe portion.
Claims10
A friction stir welding tool comprising:
- a body portion having a shoulder portion, and
- a probe portion disposed on a bottom surface of the body portion,
- where the probe portion is spherical dome shaped, and
- wherein a hardness of the shoulder portion is greater than a hardness of the probe portion.
Dependencies are inferred from the claim text.