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3D metal printing에 의한 이종금속 대형 조형물 제작 연구
박송이(Song-Yi Park),이채영(Chae-Young Lee),장단비(Dan-Bi Jang),김안나(An-Na Kim),김수현,문유빈(Yu-Bin Mun),정유진(Yu-Jin Joung),조상명(Sang-Myung Cho) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11
3D metal printing(AM) technology is the production technology to create metal products in way that the melted metal deposit from 3D CAD model data directly. Recently, research of AM techniques is active. AM techniques are divided into powder-based AM and wire-based AM. Wire-based AM is good for AM products of large-scale with a high speed deposition, inexpensive material. When TIG welding which is one of wire-based AM is applied, TIG welding AM is possible to control respectively the speed of the filler wire and arc intensity. Also, TIG welding AM has the advantages of wire-based AM and of clean environment. This study was carried out to establish the bead shape and dominant parameter that are suitable for build-up. STS316L and Albronze(CuAl-A2) were built up using conventional TIG and the Super_TIG welding in order to apply to the AM. The heat input as build-up should be increased for getting a uniform bead shape, because Albronze has high thermal conductivity. The heat input for STS316L as build-up should be reduced in order to get a uniform bead shape, because it has thermal barrier effect due to low thermal conductivity. Applying the Super_TIG welding, the productivity was about 3times of conventional TIG welding. The uniform wall thickness and good appearance could be obtained even if STS316L and Albronze were built alternately.
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