Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Preliminary Study on Pre-Heating Process of Stellite21 Powder Using Electron Beam

전자빔을 이용한 Stellite21 분말 예열공정에 관한 기초 연구

  • Lee, Ho-Jin (Department of Mechanical Engineering, Chosun University) ;
  • Song, Jae-Guk (Department of Mechanical Engineering, Chosun University) ;
  • Kim, Jin-Suk (IT Convergence Process Group, Korea Institute of Industrial Techonology) ;
  • Ahn, Dong-Gyu (Department of Mechanical Engineering, Chosun University)
  • 이호진 (조선대학교 기계공학과) ;
  • 송재국 (조선대학교 기계공학과) ;
  • 김진석 (한국생산기술연구원 IT융합공정연구그룹) ;
  • 안동규 (조선대학교 기계공학과)
  • Received : 2016.03.30
  • Accepted : 2016.04.18
  • Published : 2016.05.01
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Abstract

A powder spreading phenomenon is one of disadvantageous characteristics of the powder bed fusion process using electron beams. The powder spreading phenomenon can be controlled using a pre-heating process of metallic powders. The aim of this paper was to investigate the preheating process of Stellite21 powder using electron beams. Powder spreading experiments were performed to examine the influence of process parameters on the spreading behaviors of Stellite21 powder. Powder heating experiments were carried to investigate the effects of the focusing current of the electron beam on the quality of the heated region. Using the results of the powder spreading and heating experiments, an appropriate combination of process parameters was obtained. The pre-heating experiment of Stellite21 was performed using the estimated combination of process parameters. The results of preheating experiments showed that the preheated Stelllite21 layer with desired characteristics can be created when the estimated combination of process parameters is applied.

Keywords

References

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