DIGITIZED DYNAMIC FOCUS CONTROL IN ELECTRON BEAM MELTING

摘要：

Electron Beam Melting (EBM) shows excellent performance in making customized, net shaped metal parts, while to fully explore the potential of making large parts (one direction larger than 200mm along the manufacturing platform), the current EBM machines face an obstacle, that the electron beam defocuses near the perimeter as it scans over a broad flat area. Experiments show that metallurgical bonding in defocused zone is poor and the precision is lower, limiting the potential of EBM technology. In this paper, a strategy of digitized dynamic focus control in EBM is proposed, and the focus length is so adjusted according to beam path in real time that beam focuses as designed over the broad, flat area (200mm X 200mm).

关键词： Electron Beam Melting (EBM) electron beam defocus digitized dynamic focus control

作者: Jing ZHANG Feng LIN Chao GU0 Bo YA0

作者单位: Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China

会议类型: 国际会议

会议名称: The International Conference on Advanced Technology of Design and Manufacture 2010(2010先进设计与制造技术国际研讨会)

会议地点: 北京

会议语种:英文

页码: 289-292

在线出版日期: 2010-11-23（万方平台首次上网日期，不代表论文的发表时间）