Jx Metals Corporation

Kenta Aoyagi

Kenji Sato

Yoshitaka Shibuya

Hiroyoshi Yamamoto

Satoru Morioka

Hirofumi Watanabe

Akihiko Chiba

A production method of an additive manufactured object is provided. The method is an EB-based additive manufacturing method of spreading a pure copper powder, preheating the pure copper powder and thereafter partially melting the pure copper powder by scanning the pure copper powder with an electron beam, solidifying the pure copper powder to form a first layer, newly spreading a pure copper powder on the first layer, preheating the pure copper powder and thereafter partially melting the pure copper powder by scanning the pure copper powder with an electron beam, solidifying the pure copper powder to form a second layer, and repeating the foregoing process to add layers. The pure copper powder is a pure copper powder with a Si coating formed thereon, and the preheating temperature is set to be 400° C. or higher and less than 800° C.

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Miyagi, Japan

Kenta Aoyagi