Annular laser beam based direct metal deposition

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

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.

• Language: English
• Keywords: annular laser beam, direct metal deposition, process stability
• Work type: Article
• Typology: 1.06 - Published Scientific Conference Contribution (invited lecture)
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2018
• Number of pages: f. 222-227
• Numbering: Vol. 74
• PID: 20.500.12556/RUL-105770
• UDC: 621.9.04(045)
• ISSN on article: 2212-8271
• DOI: 10.1016/j.procir.2018.08.099
• COBISS.SI-ID: 16216859
• Publication date in RUL: 13.12.2018

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

Record is a part of a journal

• Title: Procedia CIRP
• Publisher: Elsevier
• ISSN: 2212-8271
• COBISS.SI-ID: 12981019

Secondary language

• Language: Slovenian
• Keywords: obročni laserski žarek, direktno nanašanje kovin, stabilnost procesa

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0241
• Name: Sinergetika kompleksnih sistemov in procesov