Edvard Govekar (Author), Andrej Jeromen (Author), Alexander Kuznetsov (Author), Matjaž Kotar (Author), Masaki Kondo (Author)

Abstract

The paper provides a description of a direct annular laser beam based metal deposition head, which makes use of axial material feeding and variation of the laser beam intensity distribution (LBID) on the surface of the workpiece. The application and advantages of the developed head are presented by processes of direct metal droplet, metal wire and powder deposition. Due to the achieved process symmetry, the stability and robustness of the processes are increased. This is the most clearly seen in the case of metal droplet deposition, which is an inherently unstable process. In the case of wire deposition, a precise pre-set of the proportion of energy input into the workpiece surface is enabled, which has been shown to be an important parameter affecting the stability and process outcome. In the case of laser powder deposition, the benefits of the developed head are reflected in achieved powder catchment efficiency greater than 80 % and in the head's ability to influence the deposited layer properties by adjusting the LBID.

Keywords

annular laser beam;direct metal deposition;process stability;

Data

Language: English
Year of publishing:
Typology: 1.06 - Published Scientific Conference Contribution (invited lecture)
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 621.9.04(045)
COBISS: 16216859 Link will open in a new window
ISSN: 2212-8271
Views: 1427
Downloads: 560
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Other data

Secondary language: Slovenian
Secondary keywords: obročni laserski žarek;direktno nanašanje kovin;stabilnost procesa;
Type (COBISS): Article
Pages: f. 222-227
Issue: ǂVol. ǂ74
Chronology: 2018
DOI: 10.1016/j.procir.2018.08.099
ID: 10993247