Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Characterization for selective laser sintered Fe-Cr powder

SLS 공정을 이용한 Fe-Cr 분말의 적층에 관한 연구

  • 손영명 (부산대학교 기계공학부/정밀정형 및 금형가공 연구소) ;
  • 장정환 (부산대학교 기계공학부/정밀정형 및 금형가공 연구소) ;
  • 주병돈 (부산대학교 기계공학부/정밀정형 및 금형가공 연구소) ;
  • 성민영 (부산대학교 기계공학부/정밀정형 및 금형가공 연구소) ;
  • 문영훈 (부산대학교)
  • Published : 2009.05.07
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Abstract

Selective laser sintering (SLS) is a fast growing process of rapid production fur metallic based parts. To restore damaged mold surface using SLS, single layer experiments of $20{\mu}m$ Fe-Cr powder was performed under various heat input. Process window of $20{\mu}m$ Fe-Cr powder provided feasible process parameters for the smooth regular surface. To estimate coherence between melted powder and basematal, tendency of hardness distribution has been observed. Hardness of melted zone and remelted zone was diversified from 5GPa to 6.5GPa. It is over 2 times compared of hardness of basemetal. Average surface roughness of each direction on surface of melted powder was measured. Experimental results show that the mold restoring process using SLS can be successfully applied in the mold repair industry.

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