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Publisher DOI: 10.1016/j.phpro.2014.08.167
Title: Correlations of melt pool geometry and process parameters during laser metal deposition by coaxial process monitoring
Language: English
Authors: Ocylok, Sörn 
Alexeev, Eugen 
Mann, Stefan 
Weisheit, Andreas 
Wissenbach, Konrad 
Kelbassa, Ingomar 
Keywords: Laser metal deposition;Process monitoring
Issue Date: 9-Sep-2014
Publisher: Elsevier
Source: Physics Procedia 56: 228-238 (2014)
Journal: Physics procedia 
Abstract (english): 
One major demand of today's laser metal deposition (LMD) processes is to achieve a fail-save build-up regarding changing conditions like heat accumulations. Especially for the repair of thin parts like turbine blades is the knowledge about the correlations between melt pool behavior and process parameters like laser power, feed rate and powder mass stream indispensable. The paper will show the process layout with the camera based coaxial monitoring system and the quantitative influence of the process parameters on the melt pool geometry. Therefore the diameter, length and area of the melt pool are measured by a video analytic system at various parameters and compared with the track wide in cross-sections and the laser spot diameter. The influence of changing process conditions on the melt pool is also investigated. On the base of these results an enhanced process of the build-up of a multilayer one track fillet geometry will be presented.
Conference: 8th International Conference on Photonic Technologies LANE 2014 
DOI: 10.15480/882.4313
ISSN: 1875-3892
Document Type: Chapter/Article (Proceedings)
License: CC BY-NC-ND 3.0 (Attribution-NonCommercial-NoDerivatives) CC BY-NC-ND 3.0 (Attribution-NonCommercial-NoDerivatives)
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