Edvard Govekar (Author), Andrej Jeromen (Author), Alexander Kuznetsov (Author), Gideon N. Levy (Author), Makoto Fujishima (Author)

Abstract

An annular laser beam based powder cladding head, which enables an axial powder feeding and variation of the laser beam intensity distribution (LBID) on the workpiece surface is presented. The influence of typical LBIDs, including Ring, Tophat(-), Tophat(+), and Gaussian-like, on a cladding process has been characterized based on the process and melt pool visualization, powder catchment efficiency, clad layer geometry, and porosity. The results showed that the most stable process without plasma formation but with low dilution and porosity of the clad layer can be achieved within the range from a Ring to a Tophat(-) LBID. Additionally, axial powder feeding results in a high powder catchment efficiency above 80%.

Keywords

additive manufacturing;lasers;powder;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 621.791(045)
COBISS: 16026395 Link will open in a new window
ISSN: 0007-8506
Views: 1351
Downloads: 471
Average score: 0 (0 votes)
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Other data

Secondary language: Slovenian
Secondary keywords: dodajne tehnologije;laser;prah;
Type (COBISS): Article
Embargo end date (OpenAIRE): 2020-05-01
Pages: str. 241-244
Volume: ǂVol. ǂ67
Issue: ǂiss. ǂ1
Chronology: 2018
DOI: 10.1016/j.cirp.2018.04.082
ID: 10936761