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J. Manuf. Mater. Process. 2018, 2(3), 55; https://doi.org/10.3390/jmmp2030055

Analysis of the Process Parameter Influence in Laser Cladding of 316L Stainless Steel

1
Ikergune A.I.E., San Antolin, 3, 20870 Elgoibar, Spain
2
Talens Systems, Etxe-Tar Group, Polígono Albitxuri, 20, 20870 Elgoibar, Spain
3
Department of Mechanical Engineering, University of the Basque Country, Plaza Torres Quevedo 1, 48013 Bilbao, Spain
*
Author to whom correspondence should be addressed.
Received: 15 June 2018 / Revised: 26 July 2018 / Accepted: 13 August 2018 / Published: 15 August 2018
(This article belongs to the Special Issue New Findings and Approaches in Machining Processes)
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Abstract

Laser Cladding is one of the leading processes within Additive Manufacturing technologies, which has concentrated a considerable amount of effort on its development. In regard to the latter, the current study aims to summarize the influence of the most relevant process parameters in the laser cladding processing of single and compound volumes (solid forms) made from AISI 316L stainless steel powders and using a coaxial nozzle for their deposition. Process speed, applied laser power and powder flow are considered to be the main variables affecting the laser cladding in single clads, whereas overlap percentage and overlapping strategy also become relevant when dealing with multiple clads. By setting appropriate values for each process parameter, the main goal of this paper is to develop a processing window in which a good metallurgical bond between the delivered powder and the substrate is obtained, trying simultaneously to maintain processing times at their lowest value possible. Conventional metallography techniques were performed on the cross sections of the laser tracks to measure the effective dimensions of clads, height and width, as well as the resulting dilution value. Besides the influence of the overlap between contiguous clads and layers, physical defects such as porosity and cracks were also evaluated. Optimum process parameters to maximize productivity were defined as 13 mm/s, 2500 W, 30% of overlap and a 25 g/min powder feed rate. View Full-Text
Keywords: laser cladding; powder flow; 316L stainless steel laser cladding; powder flow; 316L stainless steel
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Alvarez, P.; Montealegre, M.Á.; Pulido-Jiménez, J.F.; Arrizubieta, J.I. Analysis of the Process Parameter Influence in Laser Cladding of 316L Stainless Steel. J. Manuf. Mater. Process. 2018, 2, 55.

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