|제목(국문)||선택적 레이저 용융 공정시 용융 거동에 대한 공정 분석|
|제목(영문)||Process Analysis of Melting Behaviors in Selective Laser Melting Process|
(M. Y. Sung,
주병돈 (Byeong-Don Joo ,부산대학교 기계공학부/정밀정형 및 금형 가공 연구소 ) ▷공저자네트워크등록하기
김수희 (S. H. Kim ,부산대학교 정밀기계공학과 ) ▷공저자네트워크등록하기
문영훈 (Young-Hoon Moon ,부샌대학교 ) ▷공저자네트워크등록하기
Selective laser melting (SLM) is emerged as a new manufacturing technique to directly fabricate precise parts using metallic materials. The final characteristics of a component fabricated through the SLM process are strongly dependent upon various parameters such as laser power, scan rate and pulse duration, etc. This paper, therefore, focuses on the dimensional characteristics of melted 20.um Fe-Cr-Ni powder by fiber laser for the selective laser melting process. With energy density decrease, the height and depth were decreased. Although the conditions are of the same energy density, the shape is different by laser power and scan rate. The shapes at various laser parameters were divided into 3 groups based on depth over height. The smooth regular shape is obtained under the conditions of 50,um of powder height and 15~20PS ofpulse duration. And the laser power influenced the variation of shape more significantly than the scan rate.
|keyword||Selective Laser Melting(SLM), Fiber Laser, 20.um Fe-Cr-Ni Powder, Processing Parameters, Melted Shape|