Tool Selection in Drilling of Magnesium UNSM11917 Pieces under Dry and MQL Conditions based on Surface Roughness

Berzosa Lara, Fernando, Agustina, Beatriz de y Rubio, Eva María . (2017) Tool Selection in Drilling of Magnesium UNSM11917 Pieces under Dry and MQL Conditions based on Surface Roughness. Systems Engineering Procedia (2017) 184, p. 117-127

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Título Tool Selection in Drilling of Magnesium UNSM11917 Pieces under Dry and MQL Conditions based on Surface Roughness
Autor(es) Berzosa Lara, Fernando
Agustina, Beatriz de
Rubio, Eva María
Materia(s) Informática Industrial
Abstract Nowadays, the use of lighter materials for transportation purposes is still a challenge; especially in the aeronautical and aerospace sectors. The use of certain materials, such as magnesium alloys which have exceptional mechanical properties relative to density as structural materials, allows a remarkable reduction of weight. These alloys have significant challenges in machining. On the one hand, their use with water-based lubricants can produce flammable hydrogen atmospheres and, on the other hand, the operational parameters can produce tiny chips which, at high temperature, could burn. Regarding the tools, drills are the most used ones in drilling operations; manufacturers do not always take in consideration magnesium alloys. This is why, sometimes, the data from other types of similar alloys need to be extrapolated. This work shows an experimental study about the drilling of magnesium pieces based on surface roughness. The main goal is to determine the tools that best suit the requirement of surface roughness for this type of operations, which, for the aeronautical sector, is from 0.8 to 1.6 μm. The tests have been conducted under different cutting conditions, using several types of tools and two sustainable lubrication systems. In particular, dry machining and minimum quantity of lubrication (MQL) system have been used. A design of experiments (DOE) has been used to optimize the resources. The average roughness, Ra, has been selected as a response variable. The roughness values obtained are lower than 0.9 μm (namely, from 0.13 μm to 0.87 μm); so, it is possible to increase some of the parameter values, in order to improve the productivity, without they go outside the established limits. The results have been analyzed using the analysis of variance (ANOVA) method. A model for estimating the expected surface roughness in terms of the Rae, has been developed.
Palabras clave magnesium alloys
dry drilling
Minimum Quantity Lubrication
surface roughness
tool selection
Editor(es) Elsevier
Fecha 2017
Formato application/pdf
Identificador bibliuned:DptoICyF-ETSI-Articulos-Fberzosa-0004
http://e-spacio.uned.es/fez/view/bibliuned:DptoICyF-ETSI-Articulos-Fberzosa-0003
DOI - identifier https://doi.org/10.1016/j.proeng.2017.04.076
ISSN - identifier 2211-3819; eISSN: 2211-3827
Nombre de la revista Systems Engineering Procedia
Número de Volumen 184
Página inicial 117
Página final 127
Publicado en la Revista Systems Engineering Procedia (2017) 184, p. 117-127
Idioma eng
Versión de la publicación publishedVersion
Tipo de recurso Article
Derechos de acceso y licencia http://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/openAccess
Tipo de acceso Acceso abierto
Notas adicionales La versión registrada de este artículo, publicado por primera vez en Systems Engineering Procedia (2017) 184, p. 117-127, está disponible en línea en el sitio web del editor: Elsevier https://doi.org/10.1016/j.proeng.2017.04.076
Notas adicionales The registered version of this article, first published in Systems Engineering Procedia (2017) 184, p. 117-127, is available online at the publisher's website: Elsevier https://doi.org/10.1016/j.proeng.2017.04.076

 
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Creado: Wed, 10 Apr 2024, 16:10:09 CET