Study on SLM fabrication of Precision Metal Parts with Overhanging Structures

摘要：

　　Precision metal parts for directly fabricating are often with overhanging structures.The two forming defects,warping and sinking will damage the overhanging structure,so how to ensure its fabrication is one of the key issues of Selective Laser Melting.In this study,by using self-developed SLM equipment and 500 mesh spherical 316L stainless steel powder,from the perspective of laser energy input,the overhanging structure fabricating characteristics of selective laser melting were experimented and summarized.Based on the fabricating limitation and controlling process,for several different types of parts,the pre-optimization methods of directly rapid fabricating technology for precision metal parts with overhanging structure were summarized: improving the overhanging structure or modifying the part’s placement orientation according to the actual fabricating conditions,so that to avoid overhanging structures cannot be built; designing supports under the fabricating process limitation to ensure the overhanging structure’s fabrication.Based on the process limits,this study discussed the overhanging structure optimization methods from the perspective of the SLM model preprocessing and obtained a good application effect.

关键词： additive manufacturin selective laser Melting precision part overhanging structure

作者: Di Wang Yongqiang Yang Manhui Zhang Jianbin Lu Ruicheng Liu Dongming Xiao

作者单位: School of Mechanical and Automotive Engineering South China University of Technology Guangzhou, China

会议类型: 国际会议

会议名称: 2013 International Symposium on Assembly and Manufacturing(2013装配与制造国际专题会议)

会议地点: 西安

会议语种:英文

页码: 222-225

在线出版日期: 2013-07-01（万方平台首次上网日期，不代表论文的发表时间）