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Development of blue diode laser for additive manufacturing

積層造形のためのブルーレーザの開発

東野 律子*; 佐藤 雄二*; 升野 振一郎*; 菖蒲 敬久  ; 舟田 義則*; 阿部 信行*; 塚本 雅裕*

Higashino, Ritsuko*; Sato, Yuji*; Masuno, Shinichiro*; Shobu, Takahisa; Funada, Yoshinori*; Abe, Nobuyuki*; Tsukamoto, Masahiro*

We developed several blue diode lasers and applied laser metal deposition one of the additive manufacturing technologies. In order to investigate the amount of powder supplied and formation process of the copper layer, the process of forming a pure copper layer on SUS304 was observed using synchrotron X-ray. At 80 mg/s, it can be seen that a thicker pure copper layer is formed. It was confirmed that the pure copper thickness depended on the powder feed rate. It can be seen that the thickest layer is formed at a powder feed rate of 80 mg/s at a layer thickness at 40 ms. Based on the results obtained from copper layer, pure copper was stacked upward (direction Z) to form a pure copper wire. And since a thin molten pool was formed only in a limited area, it was observed that the molten pool was piled up with thin molten layer. It was melted to form a rod with 50 mm length for 25 second. It was confirmed that there were no pore in pure copper rod.

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