Primetals Technologies Japan, Ltd.

Tatsuki Mitsuzumi

Yujiro Watanabe

Ryosuke Mitsuoka

Hirotoshi Tagata

Ryusuke Kimoto

Takafumi Nakaya

A welding apparatus including: a welding unit () that includes a pair of electrode wheels (A,B) arranged to face each other with a welding object therebetween; a pressing unit () that includes a pair of press rolls (A,B) that are arranged to face each other with the welding object therebetween and press a welded portion of the welding object welded by the electrode wheels (A,B); a cooling unit () that supplies a cooling medium toward the welded portion pressed by the press rolls; a heating unit () that heats the welded portion cooled by the cooling unit (); and a moving body () that supports the welding unit (), the pressing unit (), the cooling unit (), and the heating unit (), and reciprocates in a welding direction of the welding object.

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Hiroshima, Japan

Tatsuki Mitsuzumi