Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Preliminary Study on Improvement of Surface Characteristics of Stellite21 Deposited Layer by Powder Feeding Type of Direct Energy Deposition Process Using Plasma Electron Beam

플라즈마 전자빔을 이용한 분말공급형 직접식 에너지 적층 공정으로 제작된 Stellite21 적층층의 표면 특성 개선에 관한 기초 연구

  • Kim, Dong-In (Department of Mechanical Engineering, Chosun University) ;
  • Lee, Ho-Jin (Department of Mechanical Engineering, Chosun University) ;
  • Ahn, Dong-Gyu (Department of Mechanical Engineering, Chosun University) ;
  • Kim, Jin-Seok (IT Convergence Process R&D Group, Korea Institute of Industrial Technology) ;
  • Kang, Eun Goo (IT Convergence Process R&D Group, Korea Institute of Industrial Technology)
  • 김동인 (조선대학교 기계공학과) ;
  • 이호진 (조선대학교 기계공학과) ;
  • 안동규 (조선대학교 기계공학과) ;
  • 김진석 (한국생산기술연구원 IT융합공정 그룹) ;
  • 강은구 (한국생산기술연구원 IT융합공정 그룹)
  • Received : 2016.07.20
  • Accepted : 2016.09.07
  • Published : 2016.11.01
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Abstract

The aim of this paper is to investigate the improvement of surface characteristics of Stellite21 deposited layer by powder feeding type of direct energy deposition (DED) process using a plasma electron beam. Re-melting experiments of the deposited specimen is performed using a three-dimensional finishing system with a plasma electron beam. The acceleration voltage and the travel speed of the electron beam are chosen as process parameters. The effects of the process parameters on the surface roughness and the hardness of the re-melted region are examined. The formation of the re-melted region is observed using an optical microscope. Results of these experiments revealed that the re-melting process using a plasma electron beam can greatly improve the surface qualities of the Stellite21 deposited layer by the DED process.

Keywords

References

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