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DED 금속 3차원 프린팅의 레이저 파워 피드백 제어에 따른 적층 물성 연구
김지언(ChiYen Kim),김지성(JiSung Kim),이호(Ho Lee),박민규(MinKyu Park),김성욱(SungWook Kim),신성선(SeongSeon Shin),황준호(JunHo Hwang),김현덕(HyunDeok Kim) 대한용접·접합학회 2020 대한용접·접합학회지 Vol.38 No.2
This study conducted a comparative analysis of laser power feedback control by measuring the melting pool size and temperature in the Directed Energy Deposition (DED) of SUS316L, to identify the effect of a conventional melting pool monitoring system on 3D metal printing performance. In the study, a CLAMIR was used on a developing 3D metal printer to control the laser beam power by measuring the size and temperature of the melting pool using an IR camera. Test parts were built from same CAD model but under different conditions, specifically, with CLAMIR on and off. The parts were investigated three ways: by 3D scanning to measure geometric errors, CT scanning to look into pore creation and distribution, and tensile tests to analyze mechanical performance.