Showa Denko K.k.

Shigetoshi Jhogan

Takenori Hashimoto

Yoshitaka Nagano

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

Growing community of inventors

Oyama, Japan

Shigetoshi Jhogan