SLM. 1 SLM SLM SLM SLM . 316L SLM. TN249 TF124 doi /j. issn X SLM SLM SLM D SLM 100% 3-8. SLM.

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1 39 6 Journal of South China University of Technology Vol 39 No Natural Science Edition June X * SLM SLM SLM VTK SPGL SLM 3D SLM SLM 316L SLM TN249TF124 doi /j issn X SLM SLM SLM SLM D SLM 100% 3-8 3D SLM 2 3D 30 ~ 50 μm SLM 3D SLM 3 1 SLM 2SLM 3 SLM 3SLM SLM * 2010A jie liu scut@ gmail com

3969 /j issn 1000-565X 2011 06 003 SLM SLM 1-2 1 SLM SLM 5 1 1 3D SLM 100% 3-8 3D SLM 2 3D 30 ~ 50 μm

2 SLM SLM 5 SLM SLM SLM Fig 2 Hierarchy diagrams of the Scanning Path Generation Fig 1 Process of direct manufacturing of metal bas-relief from Library images based on SLM 2 SLM D 3D vtkimage- Reader2 vtkimageluminance vtkimagedatageometry- SLM Filter vtkwarpscalar vtksmoothpolydatafilter 5 3D vtkimagereader2 vtkimageluminance SLM vtkimagedatageometryfilter VTK SPGL vtkwarpscalar SLM VTK VTK 3 3D VTK 100 3D VTK ZSU VTK C ++ Python SLM VTK C D vtksmoothpolydatafilter 3D 3 3D C ++ 9 SLM Fig 3 An example of 3D bas-relief modeling vtktriangle- Filter vtkplane vtkcutter 3 vtktrianglefilter 3D SLM 4 3 vtkplane SLM 3 vtk-

SLM vtkimagedatageometryfilter VTK SPGL vtkwarpscalar SLM 2 1 2 1 1 VTK VTK 3 3D 201 193-0 06 VTK 100 3D 200 192 9 12 VTK ZSU23-4 2 5 VTK C ++ Python SLM VTK C ++ 2 1 2 3D

3 6 SLM 15 Cutter 3D 3 CLICommon Layer Interface Polyline 6 Polyline Polyline Polyline Fig 4 4 Triangulated surfaces of the bas-relief model Z Z 1E = l i Z Z 1z b Z z t Z z c z z b z l 2 l 1 4z = z + z c l 2 E T l 2 5z z t l 1 3 E4 2 6 T Polyline P 5 4 T Fig 5 5 An example of slicing of the bas-relief model HPGL Fig 6 6 Polyline Contour defined by Polyline i #N * N * 0 T P Polyline 2E l 1 T 3 E 4 E l 2 6 7E 2 Polyline P Polyline 9 8 SLM ISO6983 G /M HPGLHewlett-Packard Graphics Language Dimetal-

T 1 52 2 2 3 Fig 5 5 An example of slicing of the bas-relief model 280 3-4 HPGL Fig 6 6 Polyline Contour defined by Polyline i #N * N

4 D ScanStrategy_Offset 10 Fig 7 7 Several scanning strategies in the Scanning Path Generation Library Fig 10 Direct manufacturing process of hollow 10 bas-relief 4 SLM Fig 8 8 Polyline Contour of sliced layer represented by Polyline SLM SLM Dimetal L Q mm 100 mm 10 mm 11a dmm1 dmm = 0 1 mm mm 90 11b Fig 9 9 An example of scanning path 3 Fig 11 Image for bas-relief fabrication and metal bas-relief fabricated by SLM 5 1 SLM SLM 11 SLM

Polyline SLM SLM Dimetal-280 2-500 316L Q235 100 mm 100 mm 10 mm 11a 478 500-0 08 500 dmm1 dmm = 0 1 mm 0 025 mm 90 11b

5 6 SLM D SLM SLM SLM VTK 4 SLM J SLM Yang Yong-qiang He Xing-rongWu Wei-hui et al Direct manufacturing of customized orthopedics surgery orie- nting model by selective laser melting J Chinese Jour- of Laser SLM nal 5 SLM J hard tools from metallic powders by selective laser melting J Xu Xiao-yan Liu Sheng-lan Li Bo et al Curvature-based bas-relief compression from 3D model J Computer and Modernization Krutha J P Froyenb L van vaerenbergha J et al Selective laser melting of iron-based powder J Journal of Materi- 2 J als Processing Technology /2 / He Hui-zhen Yang Xun-nian Relief generation on surfaces J Journal of Computer-Aided Design & Computer Graphics L J Wang Di Yang Yong-qiang Wu Wei-hui Process optimization for 316L stainless steel by fiber laser selective melting J Chinese Journal of Laser Wu Wei-hui Yang Yong-qiang Key techniques of selective laser melting rapid prototyping system J Chinese Journal of Mechanical Engineering Abe F Osakada K Shiomi M et al The manufacturing of J Journal of Materials Processing Technology /2 / Abe F Santos E C Kitamura Y et al Influence of forming selective laser melting process J Mechanical Engineering Science Liu Jie Yang Yongqiang Lu Jianbin et al An object-oriented class library for scanning path generation in SLS /SLM process J Applied Mechanics and Materials / 45 /46 / SLM-Based Direct Manufacturing of Metal Bas-Relief from Images Liu Jie Yang Yong-qiang Song Chang-hui School of Mechanical and Automotive EngineeringSouth China University of TechnologyGuangzhou GuangdongChina AbstractIn order to avoid the waste of materials in the traditional manufacturing of metal bas-reliefs via carving and to implement rapid manufacturinga method of directly manufacturing metal bas-reliefs from images is proposed based on the selective laser melting SLM As the current bas-relief design software is insufficient for SLMsoftware is programmed by using the Visualization Toolkit VTKand the Scanning Path Generation Library SPGL which has such main functions as 3D bas-relief modelingbas-relief model slicingscanning path generating and processing code generatingand can generate the processing codes of a SLM device from images directly Moreovera direct manufacturing process of hollow bas-relief is investigated to reduce the material consumption and take advantage of the layered manufacturing of SLM Experimental results on a SLM device using 316L stainless steel powder show that the proposed method is feasible Key wordsselective laser meltingmetal bas-reliefimagehollow bas-reliefvisualization ToolkitScanning Path Generation Library

Curvature-based bas-relief compression from 3D model J Computer and Modernization 20105 1-5 7Krutha J P Froyenb L van vaerenbergha J et al Selective laser melting of iron-based powder J Journal of

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