Effect of laser power and powder flow rate on dilution rate and surface finish produced during laser metal deposition of Titanium alloy

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

13 Citations (Scopus)

Abstract

The influence of processing parameters on the resulting properties of laser metal deposition process cannot be overemphasized. In this research, the influence of laser power and powder flow rate on the dilution and surface roughness value produced are critically studied The laser power was set between 1.8 kW and 3.0 kW, while the powder flow rate was set between 2.88 and 5.76 g/min. The scanning speed and the gas flow rate were maintained at constant values of 0.05m/s and 4l/min respectively. The study revealed that, as the laser power was increased, the degree of dilution increases but the average surface roughness value decreases. Also, as the powder flow rate was increased, the dilution decreases and the average surface roughness increases. The study shows that it is important to keep the powder flow rare low so as to achieve a better surface finished and also not to use too high laser power as this will result in higher dilution, which is not desirable in the laser additive manufacturing process because it will affect the dimensional accuracy of the part under processing.

Original languageEnglish
Title of host publicationProceedings of 2017 8th International Conference on Mechanical and Intelligent Manufacturing Technologies, ICMIMT 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages6-10
Number of pages5
ISBN (Electronic)9781538603772
DOIs
Publication statusPublished - 2 May 2017
Externally publishedYes
Event8th International Conference on Mechanical and Intelligent Manufacturing Technologies, ICMIMT 2017 - Cape Town, South Africa
Duration: 3 Feb 20176 Feb 2017

Publication series

NameProceedings of 2017 8th International Conference on Mechanical and Intelligent Manufacturing Technologies, ICMIMT 2017

Conference

Conference8th International Conference on Mechanical and Intelligent Manufacturing Technologies, ICMIMT 2017
Country/TerritorySouth Africa
CityCape Town
Period3/02/176/02/17

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