密度梯度零件选区激光熔化制造基础工艺研究.pdfVIP

上半月出版 ·快速成形技术· 密度梯度零件选区激光熔化制造基础工艺研究 罗子艺．杨永强。卢建斌。王迪 (华南理工大学机械与汽车工程学院，广东广州510640) 摘要：为了快速制造密度梯度零件，在快速成型设备DiMetai．280上进行了选区激光熔化(SU哪成型工艺研究， 将零件沿梯度方向抛光后在显微镜下观察。结果表明，零件在梯度方向随着密度的梯度变化，孔隙量也呈现相应的梯度 变化。本文采用的SLM技术在密度梯度零件制造中具有很大的潜力。 关键词：快速成型；选区激光熔化；密度梯度；致密度 中图分类号：TG665；TN249 文献标识码：A on of GradientParts PreliminaryStudy Density Using Preparation SelectiveLaser Melting LU0 Di Jianbin，WANG Ziyi，YANGYongqiang，LU China (SchoolofMechanicalAutomotiveEngineering,SouthUnivers蚵ofTechnology,Guangzhou510640,蕊删 the manufactureof ofselectivelaser Abstract：Forrapid densitygradient experiment melting(SLM) parts，the wascarriedoutonDimetal-280 betweenthe andthe Was process system,therelationship density processparameter withthe of6．73 7．78 andtherelative of83．09％～96．05％inthelevel analyzed．Theparts density g／emtog／era3 density to relative of93．21％～86．91％inthethickness directionandwiththe of7．04 7．55 andthe density g／cm3 g／era3 density directionwereformed 316Lstainlesssteel wereobserved after the by polished using powder．Theparts microscope along direction．Theresultsshowthat volumeofthe variation tothe gradient pore partspresentsgradient accordinggradient oftheir SLM hasa in variation