Transient physical effects in electron beam sintering

M. Sigl, S. Lutzmann, M. F. Zaeh

Research output: Contribution to conferencePaperpeer-review

39 Scopus citations


The extensive use of the electron beam in manufacturing processes like welding or perforating revealed the high potentials for also using it for solid freeform fabrication. First approaches like feeding wire into a melt pool have successfully shown the technical feasibility. Among other features, the electron beam exhibits high scanning speed, high power output, and beam density. While in laser-based machines the fabrication is working in a stable way, transient physical effects in the electron beam process can be observed, which still restrict process stability. For instance, a high power input of the electron beam can result in sudden scattering of the metal powder. The authors have developed an electron beam freeform fabrication system and examined the above mentioned effects. Thus, the paper provides methods in order to identify, isolate and avoid these effects, and to finally realize a reproducible process.

Original languageEnglish
Number of pages14
StatePublished - 2006
Event17th Solid Freeform Fabrication Symposium, SFF 2006 - Austin, TX, United States
Duration: 14 Aug 200616 Aug 2006


Conference17th Solid Freeform Fabrication Symposium, SFF 2006
Country/TerritoryUnited States
CityAustin, TX


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