Application of Electron Beam Melting (EBM) in Additive Manufacturing of an Impeller

An industrial impeller has been successfully fabricated by using Ti-6Al-4V ELI powder via a newly installed Arcam A2XX electron beam melting (EBM) machine. EBM was found to be preferable to build the circular or complex-shaped parts with thin walls. Several problems that frequently take place during...

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Bibliographic Details
Main Authors: Tan, Xipeng, Kok, Yihong, Tor, Shu Beng, Chua, Chee Kai
Other Authors: Proceedings of the 1st International Conference on Progress in Additive Manufacturing (Pro-AM 2014)
Format: Conference or Workshop Item
Language:English
Published: 2016
Subjects:
Online Access:https://hdl.handle.net/10356/84228
http://hdl.handle.net/10220/41691
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Institution: Nanyang Technological University
Language: English
Description
Summary:An industrial impeller has been successfully fabricated by using Ti-6Al-4V ELI powder via a newly installed Arcam A2XX electron beam melting (EBM) machine. EBM was found to be preferable to build the circular or complex-shaped parts with thin walls. Several problems that frequently take place during the EBM fabrication are proposed based on the practical experience. It is found that metallization peeling-off, warpage, “swelling” and arc trips are the main reasons resulting in the failures of building jobs. It is suggested to pay close attention to the following aspects: a thorough cleanliness of the entire EBM system before start, a reasonable placement of builds on the start plate, an optimized design on geometries, etc., for a successfully built part.