Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Study on the Development and Sintering Process Characteristics of Powder Bed Fusion System

Powder Bed Fusion 시스템의 개발 및 소결 공정 특성에 관한 연구

  • An, Young Jin (Jeonnam Science & Technology Promotion Center, Jeonnam Technopark) ;
  • Bae, Sungwoo (Industrial-University Cooperation Foundation, Hanbat National University) ;
  • Kim, Dong Soo (Department of Creative Convergence Engineering, Hanbat National University) ;
  • Kim, Jae Yeol (Department of Mechatronics Engineering, Chosun University)
  • 안영진 (전남테크노파크 전남과학기술진흥센터) ;
  • 배성우 (한밭대학교 산학협력단) ;
  • 김동수 (한밭대학교 창의융합학과) ;
  • 김재열 (조선대학교 메카트로닉스공학과)
  • Received : 2015.08.06
  • Accepted : 2015.08.19
  • Published : 2015.09.01
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Abstract

The laser Powder Bed Fusion (PBF) system is currently recognized as a leading process. Due to the various materials employed such as thermoplastic, metal and ceramic composite powder, the application's use extends to machinery, automobiles, and medical devices. The PBF system's surface quality of prototypes and processing time are significantly affected by several parameters such as laser power, laser beam size, heat temperature and laminate thickness. In order to develop a more elaborate and rapid system, this study developed a new PBF system and sintering process. It contains a 3-axis dynamic focusing scanner system that maintains a uniform laser beam size throughout the system unlike the $f{\theta}$ lens. In this study, experiments were performed to evaluate the effects of various laser scanning parameters and fabricating parameters on the fusion process, in addition to fabricating various 3D objects using a PA-12 starting material.

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References

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