Ion Optics’ Thermally-Induced Gap and Aperture Misalignment Reduction by Selective Laser Melting

2019 ◽  
Vol 35 (2) ◽  
pp. 268-276
Author(s):  
Miguel Sangregorio ◽  
Kan Xie ◽  
Ningfei Wang ◽  
Zun Zhang
Keyword(s):  
Selective Laser Melting ◽  
Laser Melting ◽  
Thermally Induced ◽  
Ion Optics

Rapid fabrication of ion optics by selective laser melting

2019 ◽  
Vol 25 (2) ◽  
pp. 299-307 ◽  
Author(s):  
Miguel Sangregorio ◽  
Ningfei Wang ◽  
Kan Xie ◽  
Zun Zhang ◽  
Xiaojun Wang
Keyword(s):  
Energy Density ◽  
Selective Laser Melting ◽  
Dimensional Accuracy ◽  
Lower Surface ◽  
Empirical Method ◽  
Hole Array ◽  
Laser Melting ◽  
Content Type ◽  
Ion Optics ◽  
Wire Cutting

Purpose Traditional ion optics manufacturing processes are complex and costly. The purpose of this paper is to study the feasibility of using selective laser melting (SLM) to produce additively manufactured ion optics. Design/methodology/approach An SLM machine was used to generate Ti6Al4V screen grids. The output was separated through wire cutting from the build platform and studied through a scanning electron microscope. To increase the geometrical accuracy of the original grid, samples consisting of nine-aperture arrays were fabricated with different parameter combinations, increasing the energy density. An empirical method to correlate the energy density applied in the fabrication process with the dimensional accuracy of the hole array positioning was developed through the analysis of multiple samples. Findings The SLM machine generated grids with optimal microstructure, the apertures fell within the specified tolerances and tolerances of slightly less than 10 µm can be guaranteed for the hole array positioning. The grids’ upper surfaces presented good-quality surface finish, and the lower surface quality was acceptable when the wire cutting process that separated the grid from the build platform performed slowly. Regardless of the build strategy, the stresses generated in the separation process caused the warping of the ion optic, so a flattening operation was necessary in all cases. Originality/value This research proved that SLM is a viable solution for ion optics fabrication, faster (less than 24 h) and less expensive (order of US$300) than traditional fabrication methods (with fabrication times from 24 to more than 400 h and costs from US$500 to US$5,000, depending on the material, size and shape).

MANUFACTURING NOVEL HEAT TRANSFER DEVICES BY SELECTIVE LASER MELTING

Equipment ◽  
2006 ◽  
Author(s):  
S. Tsopanos ◽  
M. Wong ◽  
I. Owen ◽  
C. J. Sutcliffe
Keyword(s):  
Heat Transfer ◽  
Selective Laser Melting ◽  
Laser Melting

Properties of Ti-6Al-4V titanium alloys obtained by selective laser melting

2019 ◽  
pp. 46-57
Author(s):  
M.A. Kaplan ◽  
◽  
М.A. Smirnov ◽  
A.A. Kirsankin ◽  
M.A. Sevostyanov ◽  
...  
Keyword(s):  
Titanium Alloys ◽  
Selective Laser Melting ◽  
Laser Melting
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