Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Recent Studies of Laser Metal 3D Deposition with Wire Feeding

와이어 송급 레이저 금속 3차원 적층 연구동향

  • Kam, Dong-Hyuck (Joining R&D Group, Korea Institute of Industrial Technology) ;
  • Kim, Young-Min (Joining R&D Group, Korea Institute of Industrial Technology) ;
  • Kim, Cheolhee (Joining R&D Group, Korea Institute of Industrial Technology)
  • 감동혁 (한국생산기술연구원 용접접합그룹) ;
  • 김영민 (한국생산기술연구원 용접접합그룹) ;
  • 김철희 (한국생산기술연구원 용접접합그룹)
  • Received : 2015.08.25
  • Accepted : 2015.10.19
  • Published : 2016.02.29
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Abstract

Recent developments of Laser metal 3D deposition with wire feeding are reviewed which provide an alternative to powder feeding method. The wire feeding direction, angle and position as well as laser power, wire feeding rate, and deposition speed are found to be key parameters to make quality deposition with high throughput. When compared with the powder feed, the wire feed shows higher material efficiency, higher deposition rate, and smoother surface. Large elongated columnar grains which have epitaxial growth across deposit layers are observed in deposit cross sections. The growth direction is parallel to the thermal gradient during the deposit process. Tensile properties are found to be dependent on the direction due to the anisotropic deposit property. A real-time feedback control is demonstrated to be effective to improve the deposition stability.

Keywords

References

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