Annular laser beam based direct metal deposition
Govekar, Edvard (Author), Jeromen, Andrej (Author), Kuznetsov, Alexander (Author), Kotar, Matjaž (Author), Kondo, Masaki (Author)

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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
Work type:Article (dk_c)
Tipology:1.06 - Published Scientific Conference Contribution (invited lecture)
Organization:FS - Faculty of Mechanical Engineering
Number of pages:f. 222-227
Numbering:Vol. 74
ISSN on article:2212-8271
DOI:10.1016/j.procir.2018.08.099 This link opens in a new window
COBISS.SI-ID:16216859 This link opens in a new window
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Record is a part of a proceedings

Title:10th CIRP Conference on Photonic Technologies (LANE 2018), September 03 - 06, 2018 Fürth, Germany
COBISS.SI-ID:16261147 This link opens in a new window

Record is a part of a journal

Title:Procedia CIRP
COBISS.SI-ID:12981019 This link opens in a new window

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project no.:P2-0241
Name:Sinergetika kompleksnih sistemov in procesov

Secondary language

Keywords:obročni laserski žarek, direktno nanašanje kovin, stabilnost procesa

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