Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Effect of Process Parameters on Forming Characteristics of Selective Laser Sintered Fe-Ni-Cr Powder

Fe-Ni-Cr 분말의 선택적 레이저 소결 적층시 공정변수에 따른 조형특성

  • 주병돈 (부산대학교 정밀기계공학과) ;
  • 장정환 (부산대학교 정밀기계공학과) ;
  • 임홍섭 (부산대학교 정밀기계공학과) ;
  • 손영명 (부산대학교 정밀기계공학과) ;
  • 문영훈 (부산대학교 정밀기계공학과 / 정밀정형 및 금형가공 연구소)
  • Published : 2009.06.01
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Abstract

Selective laser sintering is a kind of rapid prototyping process whereby a three-dimensional part is built layer wise by laser scanning the powder. This process is highly influenced by powder and laser parameters such as laser power, scan rate, fill spacing and layer thickness. Therefore a study on fabricating Fe-Ni-Cr powder by selective laser sintering has been performed. In this study, fabrication was performed by experimental facilities consisting of a 200W fiber laser which can be focused to 0.08mm and atmospheric chamber which can control atmospheric pressure with argon. With power increase or energy density decrease, line width was decreased and line surface quality was improved with energy density increase. Surface quality of quadrangle structure was improved with fill spacing optimization.

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References

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