Matjaž Kotar (Author), Makoto Fujishima (Author), Gideon N. Levy (Author), Edvard Govekar (Author)

Abstract

In this paper the stability of the annular laser beam (ALB) direct wire-deposition process, which enables process symmetry and a well-defined ALB workpiece irradiation proportion (WIP) and related energy input onto the workpiece and the wire surface is considered. Various initial process phase strategies with respect to different initial wire-end positions and WIPs were analysed based on the process visualization and outcome, and the melt pool temperature. It was shown that in addition to a precise synchronization of the mutually time-dependent ALB power, wire and workpiece feeding velocity, the fastest and the most robust transition into a stable stationary process could be achieved with the initial position of the wire-end on the workpiece surface. Additionally, the WIP was shown to have a strong and nonlinear influence on the process stability.

Keywords

additive manufacturing;lasers;wire;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 621.791(045)
COBISS: 16601883 Link will open in a new window
ISSN: 0007-8506
Views: 898
Downloads: 342
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Other data

Secondary language: Slovenian
Secondary keywords: dodajne tehnologije;laserji;žice;
Type (COBISS): Article
Embargo end date (OpenAIRE): 2021-04-30
Pages: str. 233-236
Volume: ǂVol. ǂ68
Issue: ǂiss. ǂ1
Chronology: 2019
DOI: 10.1016/j.cirp.2019.04.118
ID: 11186372