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A verified model of the behaviour of the axial powder stream concentration from a coaxial laser cladding nozzle

Pinkerton, A. J. and Li, L. (2002) A verified model of the behaviour of the axial powder stream concentration from a coaxial laser cladding nozzle. In: Proceedings of the 21st International Congress on Applications of Lasers and Electro-optics (ICALEO). Laser Institute of America.

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Abstract

Direct laser deposition is a solid freeform fabrication process that is capable of producing fully dense components with full structural integrity. The process is greatly enhanced by the use of an omnidirectional coaxial powder nozzle, but in order to optimise the technique, accurate control of the operational parameters of material feed rate and incident laser power intensity is necessary. Both are affected by the axial powder stream concentration between the nozzle and the deposition point. In this investigation optical and image, analysis techniques are used to examine variations in the concentration over the full length of the axis. Based on this, a mathematical model relating directly to nozzle dimensions and material flow rates is developed and the results from it compared with the experimental findings. The two show good agreement.

Item Type: Contribution in Book/Report/Proceedings
Additional Information: Export Date: 26 October 2012 Source: Scopus
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 59679
Deposited By: ep_importer_pure
Deposited On: 21 Nov 2012 09:20
Refereed?: No
Published?: Published
Last Modified: 10 Apr 2014 01:44
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/59679

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