
Proceedings Paper
Features of the estimation of temperature distribution on the bead formed by the laser aided metal powder depositionFormat | Member Price | Non-Member Price |
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Paper Abstract
The estimation of temperature variations in five regions of layer track is fulfilled in two different cases of layer track
formation: laser aided metal powder deposition and selective laser melting with a pre-deposited layer of metal powder.
The peculiarities of the multichannel pyrometer have been described, and the advantages of the application of spectralratio
pyrometer in diagnostics in the additive laser technologies have been demonstrated. A set of measurements of the
temperature distribution in the region of exposure to laser radiation during a bead formation in technology of laser aided
metal powder deposition with powder injection has been performed at the specific energy input of J=90 MJ/kg. The
dependences of the temperature on scanning velocity, laser power and powder thickness have been derived in the
technology of selective laser melting. It has been shown that the maximum temperature of the track surface is little
changed in the wide range of variation of the calculated parameter of specific energy input J=4…20 MJ/kg, the bead
width is here increased as J grows. The increase of J above a certain value J0 leads to a rise in the temperature at the bead
axis. For the experimental conditions with the track width around 1 mm, the character value is estimated as J0 =
24 MJ/kg. It has been shown that J0 depends inversely on the track width.
Paper Details
Date Published: 26 June 2017
PDF: 8 pages
Proc. SPIE 10329, Optical Measurement Systems for Industrial Inspection X, 1032942 (26 June 2017); doi: 10.1117/12.2270239
Published in SPIE Proceedings Vol. 10329:
Optical Measurement Systems for Industrial Inspection X
Peter Lehmann; Wolfgang Osten; Armando Albertazzi Gonçalves Jr., Editor(s)
PDF: 8 pages
Proc. SPIE 10329, Optical Measurement Systems for Industrial Inspection X, 1032942 (26 June 2017); doi: 10.1117/12.2270239
Show Author Affiliations
Yuri N. Zavalov, Institute on Laser and Information Technologies (Russian Federation)
Alexander V. Dubrov, Institute on Laser and Information Technologies (Russian Federation)
Alexander V. Dubrov, Institute on Laser and Information Technologies (Russian Federation)
Fikret Kh. Mirzade, Institute on Laser and Information Technologies (Russian Federation)
Vladimir D. Dubrov, Institute on Laser and Information Technologies (Russian Federation)
Vladimir D. Dubrov, Institute on Laser and Information Technologies (Russian Federation)
Published in SPIE Proceedings Vol. 10329:
Optical Measurement Systems for Industrial Inspection X
Peter Lehmann; Wolfgang Osten; Armando Albertazzi Gonçalves Jr., Editor(s)
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