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Manufacturability of Overhanging Holes Using Electron Beam Melting

1
Industrial Engineering Department, King Saud University, Riyadh 11421, Saudi Arabia
2
Princess Fatima Alnijiris’s Research Chair for Advanced Manufacturing Technology (FARCAMT Chair), Advanced Manufacturing Institute, King Saud University, Riyadh 11421, Saudi Arabia
*
Author to whom correspondence should be addressed.
Metals 2018, 8(6), 397; https://doi.org/10.3390/met8060397
Received: 15 April 2018 / Revised: 22 May 2018 / Accepted: 24 May 2018 / Published: 30 May 2018

Abstract

This study aims to investigate the manufacturability of overhang round holes with and without support. The experiments were conducted by electron beam melting (EBM) using a Ti6Al4V powder. A large number of overhanging holes with and without support were fabricated and evaluated. The geometrical accuracy, mechanical properties, and microstructures were utilized as a measure of the process performance. It was demonstrated that overhanging features can be built successfully without support up to a certain dimension (or threshold value). Beyond that value, a minimal support structure can be employed to achieve the most suitable trade-off between production time, cost, and accuracy. View Full-Text
Keywords: additive manufacturing; design for additive manufacturing; electron beam melting; overhang surfaces additive manufacturing; design for additive manufacturing; electron beam melting; overhang surfaces
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Ameen, W.; Al-Ahmari, A.; Mohammed, M.K.; Mian, S.H. Manufacturability of Overhanging Holes Using Electron Beam Melting. Metals 2018, 8, 397.

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