Manufacturing Space Homogeneity in Additive Manufacturing – Electron Beam Melting Case

IF 1.2 4区工程技术 Q3 ENGINEERING, MECHANICAL

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2017-10-10 DOI:10.5545/SV-JME.2017.4365

A. Piaget, M. Museau, H. Paris

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引用次数: 3

Abstract

This paper focuses on the manufacturing space homogeneity of the electron beam melting (EBM) technology. An Arcam AB A1 machine is used as tool for experimentations, with titanium (Ti-6Al-4V) as material. The objective of this study is to show the correlation between workpieces geometrical deformations and their position in the manufacturing space. Results show that the position on Z-axis does not affect quality, but there is a strong link in the Z-plane: significant defects appear near the manufacturing space boundaries. First manufactured layers are deformed in the vicinities of the manufacturing space edges. Up to 3 mm of material loss and 8mm of dimensional deformation are measured. Further analyses point that this phenomenon is particularly related to a sintering variation in the powder: there are up to 3 % density difference from the center to borders. To avoid the problem, reduction of the manufacturing space and a supporting strategy are proposed. Defects can also be removed by implementing thermal insulation on the machine or by modifying the beam operation.

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增材制造中的制造空间均匀性——电子束熔化案例

本文主要研究了电子束熔化(EBM)技术的制造空间均匀性问题。实验工具为Arcam AB A1型机床，材料为钛(Ti-6Al-4V)。本研究的目的是显示工件几何变形与其在制造空间中的位置之间的相关性。结果表明，在z轴上的位置不影响质量，但在z平面上存在很强的联系:在制造空间边界附近出现明显的缺陷。首先制造的层在制造空间边缘附近变形。测量了高达3mm的材料损失和8mm的尺寸变形。进一步的分析指出，这种现象特别与粉末的烧结变化有关:从中心到边界的密度差高达3%。为了避免这一问题，提出了缩小制造空间和配套策略。缺陷也可以通过在机器上实施隔热或通过修改光束操作来消除。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Strojniski Vestnik-Journal of Mechanical Engineering 工程技术-工程：机械

CiteScore

3.00

自引率

17.60%

发文量

审稿时长

4.1 months

期刊介绍： The international journal publishes original and (mini)review articles covering the concepts of materials science, mechanics, kinematics, thermodynamics, energy and environment, mechatronics and robotics, fluid mechanics, tribology, cybernetics, industrial engineering and structural analysis. The journal follows new trends and progress proven practice in the mechanical engineering and also in the closely related sciences as are electrical, civil and process engineering, medicine, microbiology, ecology, agriculture, transport systems, aviation, and others, thus creating a unique forum for interdisciplinary or multidisciplinary dialogue.